A-Share · Pre-Market
A-Share Pre-Market Brief | 2026-08-05 Wednesday
Machine-translated from the Chinese original. In case of any discrepancy, the Chinese version prevails.
Single-name entries 24
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Scores are a subjective ordinal scale; gaps within a band carry no ranking meaning
Data scope disclosed up front (please read this first)
- News time window: 2026-08-04 (Tuesday) 15:00 close → 2026-08-05 07:00. News outside the window is listed separately and down-weighted in Section 1.5 "Screening Out Stale News", and is not counted as a new catalyst for today.
- Quote scope: for every stock in this report, the closing price, change, turnover rate, market cap, trailing P/E and net main-force inflow are all as of the 2026-08-04 close, taken from Tencent Finance single-stock quotes (
stock_zh_a_spot_tx, 5536 records). The limit-up pool and the consecutive limit-up ladder are from East Money. Industry moves and industry net inflows are on the THS industry scope — industry net inflow and single-stock net main-force inflow belong to two different scopes and cannot be added together.- Price-limit bands differ by board, and every stock in this report is tagged with its board: SSE/SZSE main board ±10%, ChiNext (30/301) ±20%, STAR Market (688) ±20%, BSE (codes starting with 8/9) ±30%. On ChiNext, +15% is not a limit-up — do not read a ±20% stock with ±10% instincts.
- This report corrects multiple ticker errors made by news-aggregation sources (see Section 1.6). Every code given here has been cross-checked against the quote API by looking up the security's short name.
- Items not obtained / marked "no reliable data": single-day northbound net flow (the exchanges stopped disclosing it from August 2024); the August 4 dragon-tiger list (not obtained by press time); the identity of the counterparty to 蜂助手 (Fengzhushou, 301382)'s contract (the company has completed the confidentiality-exemption disclosure procedure, so it cannot be confirmed).
⚠️ Data-pull and implementation notes for this run (internal only):
- The East Money full-market quote API
stock_zh_a_spot_emwas unavailable for the fourth consecutive trading day; switched directly to Tencent'sstock_zh_a_spot_tx(5536 records, including zljlr net main-force inflow) and it worked first try. Recommend formally making the Tencent source the default primary source — it has now failed four days running, with records in the 8/3 pre-market, 8/3 recap and 8/4 recap; this is not a one-off. - The East Money limit-up pool
stock_zt_pool_em(20260804)returned normally this time with 138 rows (yesterday's recap had to manually add back 高争民爆 (Gaozheng Explosive, 002827); that stock is no longer in the ladder today, so it does not affect this report). Note that the field name in this API is连板数; yesterday's script wrote it asbdand threw a KeyError — now fixed. - THS
stock_board_industry_summary_thsis available (90 rows, including net inflow) and continues to serve as the primary source for industry scope. - The biggest single category of risk this time was not API failure but errors in the news sources themselves: in Sohu's "Roundup of Important Announcements on the Evening of August 4", 蜂助手 (Fengzhushou) was written as 605379 (actually 301382), 江南新材 (Jiangnan New Material) as 688136 (actually 603124), 协创数据 (Xiechuang Data) as 688080 (actually 300857), 航亚科技 (Hangya Technology) as 002627 (actually 688510), and 中孚实业 (Zhongfu Industrial) as "002variable". Taking these at face value would have sent clients five wrong tickers. From now on, any ticker taken from an aggregation piece must be re-verified against the quote API by short name — this must be baked into the process.
- The second category of risk is "stale news treated as new news": Sina's "Evening Report of August 4" mixed the State Council executive meeting's nuclear approvals (7/31), the new-type power system "15th Five-Year" plan (8/3), Unitree's IPO registration (7/2), the TrendForce DRAM upgrade (end of June), the 12th centralized drug procurement round (bids opened 7/31) and the UFLPA list (published 7/31) all into the same "August 4 blockbuster news" piece. These are all outside the time window; this report verified each publication date one by one and moved them into Section 1.5. Without that verification, today we would have pushed a "power-grid policy already disproven yesterday" a second time.
- The self-criticism from yesterday's recap ("in the pre-market, 97% of the budget went into word-frequency statistics on a policy PDF, while the real catalysts sat unexamined in rows 2 and 7 of the news table") has been acted on: this report first breaks down the evening announcements item by item and checks each publication date, and only then merges them into branches.
- The THS "components" sector's leading gainer is shown as 嘉立创 (JLC, 001232) +146.28%, but that stock was a new listing on its 8/4 debut day (issue price RMB 84.46, opened +177%) — not a signal of intrinsic sector strength. That said, the sector was 63 up / 0 down, so the strength itself still holds; this report therefore keeps the sector conclusion and drops the leading-gainer metric.
- The Tencent source has no records for 嘉立创 (JLC) or 药明合联 (WuXi XDC) (the former was a same-day new listing not yet in the snapshot, the latter is not an A-share); no numbers were force-filled.
- US single-stock quotes (FN/COHR/LITE/MU) were switched to the akshare–Sina US equity source: yfinance and the East Money hist API were likewise rate-limited today, so the source was switched and the date field verified as 2026-08-04. yfinance rate-limiting has now run N days in a row; recommend writing "prefer the Sina US equity source" directly into the agent prompt to save the trial-and-error cost every time.
- The long/short evidence in Section 2.5 of this report comes from a separate bull-bear debate sub-agent. It produced two key data points this main agent had not computed itself: ① volume ratio ≈ 1.0 (8/4 turnover / prior-5-day average: 中际旭创 (Innolight) 1.05, 新易盛 (Eoptolink) 1.04, 生益 (Shengyi) 0.89) — this alone re-characterizes "net main-force inflow of RMB 5.068 billion, first in the whole market", which I had originally treated as the primary bullish argument, as "a change in the large-order share within existing holdings"; ② 胜宏科技 (Victory Giant) is the only large PCB name not bound by ±10%, and it rose just 6.60% — i.e. none of the 15 limit-ups in the components sector was an unconstrained price. Both are "institutional illusion" traps that you can never spot by looking at percentage moves alone. From now on, the pre-market must compute leader volume ratios by default, and actively look for the 20cm names in each sector as unconstrained readings.
- The first draft listed semiconductors as a "third leg" alongside optical modules and PCB; after the debate side rebutted with 中微 (AMEC) +2.55%, 沪硅 (NSIG) +3.03%, 汇顶 (Goodix) +0.63% plus overseas AMAT/LRCX/ASML data, it was downgraded to grade A with internal divergence noted. This is a textbook narrative-splicing error, recorded for future reference.
0. Today in One Sentence
The strongest catalyst is the independent repricing of overnight optical-communications stocks — not the vague Nasdaq +2.59% number, but Fabrinet +16.47%, Coherent +12.35%, Lumentum +8.92% (five-day +18%/+33%/+30%): this is the AI optical-interconnect supply chain rallying on its own; layered on top is the 8/4 A-share components sector at 63 up / 0 down with 15 limit-ups, the most of any sector. The strongest branch is 【 AI compute hardware 】, but strictly speaking only two legs are running (optical modules/CPO, PCB/copper-clad laminate); the third leg — semiconductor equipment/materials — is clearly absent (中微公司 (AMEC) rose only +2.55% under a ±20% band, 汇顶科技 (Goodix) +0.63%). Today's real difficulty is not "is there a catalyst" but "was there new money on August 4" — leader volume ratios were only about 1.0 (中际旭创 (Innolight) 1.05, 新易盛 (Eoptolink) 1.04, 生益科技 (Shengyi) 0.89), i.e. up 13% under free trading with a ±20% band yet almost no volume expansion, which looks more like a vacuum of selling pressure and short covering than incremental money grabbing shares; at the same time these names are still broadly −20% to −50% over the past 20 sessions and −28% to −60% below their March highs. The driver type is "overseas industry read-across + rotation of existing money from high to low", not new policy or new orders. Pre-market read: a gap-up is likely, but today's arbiter is volume, not price.
The only heavyweight company announcement that genuinely falls inside the time window is the RMB 7.670 billion compute contract from 蜂助手 (Fengzhushou, 301382, ChiNext), but its average annual net profit is only RMB 60–72 million, the counterparty is exempt from disclosure, and the company itself admits that "finance leasing will create long-term interest-bearing debt and the gearing ratio is expected to rise substantially" — this is the classic "huge headline number, thin earnings quality" announcement, and this report rates it "watch only".
1. News Overview
1.1 New items inside the time window (2026-08-04 15:00 → 08-05 07:00)
| # | Publication time | Source | Headline | Type | Branch involved | Impact grade | Link |
|---|---|---|---|---|---|---|---|
| 1 | 08-04 US intraday/close | Sina Finance / Cailianshe | The three major US indices surged together; Nasdaq +2.59% to 26584.99, S&P +1.79%, Dow +1.71% to a record close; Nvidia +3.25%, Meta +6.71%, Alphabet A +5.34%, Microsoft +4.69%, Amazon +4.7% | Overseas industry | Whole AI compute hardware chain | S | link |
| 1b | 08-04 US close | akshare–Sina US quotes, measured | Optical-communications stocks surged on their own (a more precise read-across than the index): Fabrinet (FN) +16.47%, Coherent (COHR) +12.35%, Lumentum (LITE) +8.92%, Micron (MU) +7.62%; five-day gains FN +18.08%, COHR +33.04%, LITE +30.30% | Overseas industry | Optical modules/CPO | S | measured via quote API |
| 1c | 08-03 | TrendForce | Raised 2026 AI server shipment growth from 28% to nearly 31%; combined capex of the nine major CSPs +90% YoY, above USD 886.7 billion | Industry data | Whole AI compute hardware chain | A | link |
| 1d | 08-01 | Sina Finance | A new round of electronic-cloth price hikes: 7628 heavy cloth up another RMB 1.5/metre, light cloth up RMB 2/metre; the fifth round this year was completed in June, and the average price of RMB 7.4/metre has doubled from the 2025Q3 trough; high-end electronic-cloth capacity is locked up until early 2028, with about 30% of small and mid-sized CCL plants halted for lack of cloth | Price | PCB/copper-clad laminate | A | link |
| 2 | 08-04 US after hours | Sina Finance | Palantir's Q2 results beat handily and it raised full-year revenue guidance, surging after hours; Snap's results also beat by a wide margin | Earnings | AI applications/software | A | link |
| 3 | 08-04 after close | Jiemian / NBD / Securities Times | 蜂助手 (Fengzhushou, 301382)'s wholly-owned subsidiary 雅安云算 (Ya'an Yunsuan) signed an RMB 3.062 billion "Compute Server Procurement Agreement" plus an RMB 4.608 billion "Compute Services Contract", RMB 7.670 billion in total; expected average annual net profit RMB 60–72 million; cooperation period 2026/8/5–2031/8/4 | Order | Compute leasing/IDC | A | link |
| 4 | 08-04 after close | East Money / Baijiahao | 江南新材 (Jiangnan New Material, 603124) disclosed an RMB 1.6 billion private-placement plan, directed at high-purity electronic-grade copper oxide powder (investment RMB 750 million, revenue at full capacity RMB 4.8 billion) and liquid-cooling modules (investment RMB 909 million, revenue at full capacity RMB 3.2 billion); it plans to issue no more than 43.7236 million shares, with a three-year build period | Financing/expansion | Liquid cooling/PCB upstream | B+ | link |
| 5 | 08-04 after close | Sohu / THS | 协创数据 (Xiechuang Data, 300857) plans to use up to RMB 7 billion of its own funds for entrusted wealth management | Corporate action | AI servers | B | link |
| 6 | 08-04 | Ifeng Tech / ITHome / cnBeta | Reports say PC majors HP, ASUS and Acer have begun using small quantities of CXMT DRAM chips, with qualification completed around mid-year; volumes are currently limited and the models are mainly sold outside the US | Industry | Domestic memory | A | link |
| 7 | 08-04 after close | Sohu / Shanghai Securities News | 有研新材 (Grirem Advanced Materials, 600206) interim report: revenue RMB 6.158 billion (+50.35%), net profit attributable to parent RMB 183 million (+40.89%); proposes RMB 0.43 dividend per 10 shares | Earnings | Semiconductor materials | B+ | link |
| 8 | 08-04 after close | Sohu | 中孚实业 (Zhongfu Industrial, 600595) interim report: revenue RMB 14.258 billion (+34.85%), net profit attributable to parent RMB 1.881 billion (+165.84%) | Earnings | Electrolytic aluminium | B+ | link |
| 9 | 08-04 after close | Sohu | 大金重工 (Dajin Heavy Industry, 002487)'s subsidiary signed a roughly RMB 1 billion shipbuilding contract with a Norwegian shipowner, to be delivered in batches in 2029 | Order | Shipbuilding/offshore wind | B | link |
| 10 | 08-04 after close | THS | 金卡智能 (Goldcard Smart Group, 300349)'s subsidiary signed an RMB 890 million smart gas meter sales contract | Order | Smart metering | B | link |
| 11 | 08-04 after close | THS | 威胜信息 (Wasion Information, 688100) won RMB 80.9602 million of grid project bids in July | Order | Smart metering/power grid | C | link |
| 12 | 08-04 after close | THS | 恒瑞医药 (Hengrui Pharmaceuticals, 600276)'s SHR-A2009 Phase II trial was approved, with cumulative R&D spend of RMB 329 million | Event | Innovative drugs | C | link |
| 13 | 08-04 after close | Sohu | 广汽集团 (GAC Group, 601238) July NEV sales 51,500 units (+54.20%), January–July cumulative 311,700 units (+66.20%) | Operating data | NEV | B | link |
| 14 | 08-04 after close | Sohu | 太阳能 (CECEP Solar Energy, 000591) received RMB 940 million of renewable energy subsidies in July (+82.52%), January–July cumulative RMB 1.586 billion | Operating data | Solar power operation | C | link |
| 15 | 08-04 after close | Sohu | 中科三环 (SanHuan Magnetics, 000970) plans to acquire a controlling stake in 中电磁声 (China Electronics Magnetics & Acoustics) | M&A | Magnetic materials | C | link |
| 16 | 08-04 after close | Sohu | 百润股份 (Bairun, 002568) interim report: revenue RMB 1.658 billion (+11.34%), net profit attributable to parent RMB 479 million (+23.08%) | Earnings | Food & beverage | C | link |
| 17 | 08-04 after close | Sohu | 长江证券 (Changjiang Securities, 000783) plans to buy back RMB 100–200 million of shares | Corporate action | Brokerage | C | link |
| 18 | 08-04 | NetEase / Sina | US after hours: oil prices slumped as Trump said the US and Iran will hold talks and that he had cancelled the plan to strike Iran | Event | Oil (negative)/airlines & chemicals (positive) | B | link |
| 19 | 08-04 after close | Sina | Nine A-share companies disclosed delisting-risk warnings / termination-of-listing alerts together (*ST 亚世, *ST 华夏, *ST 闻泰, *ST 国中, *ST 熊猫, *ST 泰禾, *ST 宝新, ST 汉川 and others) | Risk | Delisting-risk stocks | negative | link |
1.2 Impact grade definitions
S = changes the industry trend or brings direct order elasticity; A = clearly positive for a branch with multiple beneficiaries; B = positive but with a long chain that needs verification; C = sentiment stimulus with weak persistence.
1.5 Screening out stale news (the most important section here — do not treat these as today's new catalysts)
Sina's "Evening Report of August 4" and several aggregation pieces mixed the items below in with the 8/4 post-close announcements. After verifying each publication date, they all fall outside the time window, and several were already traded — or even disproven — on 8/3–8/4. Treating them as new positives today would repeat yesterday's pre-market error.
| Item | Actual publication date | Age | Has the market already reacted | Treatment here |
|---|---|---|---|---|
| The State Council executive meeting approved 4 nuclear projects with 8 units in total, above RMB 170 billion of investment | July 31 | 3rd trading day | Fully priced in and leaders weakening: on 8/4 中国核电 (CNNP, 601985, main board) −1.11%, 中国广核 (CGN Power, 003816, main board) −2.16%; 中国核建 (China Nuclear Engineering, 601611, main board) was +4.39% but with net main-force outflow of RMB 201 million | Downgraded to C, kept only as a hot-money ladder watch |
| "15th Five-Year Plan for Building a New-Type Power System" (NDRC Energy [2026] No. 942), non-fossil generation to reach 50% of output by 2030 | August 3 | 2nd trading day | Already disproven: this is exactly the document yesterday's pre-market bet heavily on; on 8/4 the grid equipment sector went nowhere and the Top5 recommendations delivered 0/5 | Pass, no longer recommended |
| WuXi AppTec interim report + across-the-board raise to full-year guidance (revenue RMB 51.3–53.0 billion → RMB 58.5–60.5 billion, continuing-operations revenue growth 18–22% → 35–39%, backlog RMB 66.4 billion) | evening of August 3 | 2nd trading day | Already delivered: on 8/4 药明康德 (WuXi AppTec, 603259, main board) limit-up +10.00% with net main-force inflow of RMB 1.833 billion | Downgraded to "second-round fermentation / relay position", not a top pick |
| 中微公司 (AMEC, 688012, STAR Market) interim earnings pre-announcement: net profit attributable to parent RMB 2.7–2.9 billion (+282.48%~+310.81%) | evening of August 3 | 2nd trading day | Already reacted, and the reaction was cool: only +2.55% on 8/4, with net main-force outflow of RMB 241 million | Downgraded; see the quality breakdown in Section 1.4 |
| TrendForce raised its 3Q26 PC DRAM contract price increase to 15–20% (from 8–13%) | end of June | over a month | Traded long ago | Background only, not counted as a new catalyst |
| Proposed winning results of the 12th national centralized drug procurement round (65 varieties, 327 companies, 521 products) | bids opened July 31, published August 1 | 3rd trading day | Already reacted | Downgraded to C; only individual company confirmation announcements count as new |
| The CSRC approved Unitree Technology's STAR Market IPO registration | July 2 | over a month | Traded long ago | Not counted; humanoid robots have no new catalyst today |
| Nvidia's Spectrum-X CPO switch enters mass production | full mass production announced June 2, small-volume shipments began end of July | over a month | Already fermented; 8/4 was a re-fermentation | Treated as industry background, not a new catalyst |
| The US DHS added 43 Chinese companies to the UFLPA entity list (Qiaqia Food, Synear, Septwolves and others) | published July 31, effective August 3 | 3rd trading day | Already reacted; Septwolves has replied "no impact" | Not counted |
| Li Qiang signed a State Council decree revising the "Regulations on the Protection of Integrated Circuit Layout Designs" | early August (exact effective date cannot be confirmed for now) | — | Legislative in nature, no direct earnings read-across | Downgraded to C |
14 One "earnings positive" that must be taken apart: 中微公司AMEC / 688012STAR Market
AMEC pre-announced net profit attributable to parent of RMB 2.7–2.9 billion, +282.48%~+310.81% YoY — an extremely eye-catching headline. But taken apart:
- Ex-non-recurring net profit attributable to parent is only RMB 1.0–1.2 billion (+85.61%~+122.73%);
- the gap comes from fair-value changes and investment income on outside equity investments totalling about RMB 1.982 billion, up roughly RMB 1.815 billion YoY — this is non-recurring, not earned by the equipment core business;
- at the operating level: revenue about RMB 6.691 billion (+34.89%), gross profit up about RMB 682 million — solid core growth, but nowhere near as dramatic as +310%.
The market has already seen through this: on 8/4 the stock rose only 2.55%, with net main-force outflow of RMB 241 million, and it is still −24.35% over the past 20 sessions. "+310%" is the single most misleading number in this cycle, and this report explicitly does not use it as a basis for recommendation. Sources: Shanghai Securities News12, Securities Times13
1.6 Correction table for news-source ticker errors (all re-verified here against the quote API by security short name)
| Security short name | Wrongly written by aggregators | Actual code | Board | Price limit |
|---|---|---|---|---|
| 蜂助手 (Fengzhushou) | 605379 | 301382 | ChiNext | ±20% |
| 江南新材 (Jiangnan New Material) | 688136 | 603124 | SSE main board | ±10% |
| 协创数据 (Xiechuang Data) | 688080 | 300857 | ChiNext | ±20% |
| 航亚科技 (Hangya Technology) | 002627 | 688510 | STAR Market | ±20% |
| 中孚实业 (Zhongfu Industrial) | 002variable (garbled) | 600595 | SSE main board | ±10% |
| 钛能化学 (Tai'neng Chemical) | 603387 | 002145 | SZSE main board | ±10% |
Note: if you buy 蜂助手 (Fengzhushou) using the wrongly written 605379, you get a completely unrelated stock. This is the highest-value correction in this report.
2. Strongest positive branches, in descending order
| Rank | Branch | Strength | Core news | Logic hardness | Persistence | Benefit path | Representative stocks | Risk |
|---|---|---|---|---|---|---|---|---|
| 1 | AI compute hardware · optical modules/CPO | S | Overnight Nasdaq +2.59%, Nvidia +3.25%; on 8/4 the A-share "易中天" trio rose together and the communications equipment sector saw net inflow of RMB 16.114 billion | High (overseas capex and orders are verifiable) | Medium term, but short-term position is elevated | North American cloud capex → 800G/1.6T optical module orders → domestic leaders' revenue | 中际旭创 (Innolight, 300308, ChiNext), 新易盛 (Eoptolink, 300502, ChiNext), 天孚通信 (T&S Communications, 300394, ChiNext), 光迅科技 (Accelink, 002281, main board) | The 8/4 single-day gain was too large; still deeply down over the past 20 sessions, meaning the trend is not repaired |
| 2 | AI compute hardware · PCB/copper-clad laminate | S | On 8/4 the "components" industry was +7.07%, 63 up / 0 down, net inflow RMB 6.507 billion, with 15 limit-ups, the most of any sector | High (AI server/switch PCB layer counts and unit prices both rising) | Medium term | High-layer-count boards and high-frequency/high-speed CCL rising in both volume and price | 生益科技 (Shengyi Technology, 600183, main board), 沪电股份 (WUS Printed Circuit, 002463, main board), 深南电路 (Shennan Circuits, 002916, main board), 鹏鼎控股 (Avary Holding, 002938, main board) | 15 limit-ups already; disagreement is likely the next day; 华正新材 (Huazheng New Material) and peers are −41% over 20 sessions, so this is an oversold bounce |
| 3 | Semiconductors/memory | A (downgraded from the initial read) | The semiconductor industry saw single-day net inflow of RMB 23.368 billion, first in the whole market (178 up / 5 down); CXMT entered the HP/ASUS/Acer PC supply chain (new on 8/4) | Medium-high (domestic substitution enters a mainstream global PC chain for the first time, but volumes are "very limited") | Medium term | Domestic DRAM qualification → module/packaging-testing/equipment chain | 兆易创新 (GigaDevice, 603986, main board), 澜起科技 (Montage Technology, 688008, STAR Market), 长电科技 (JCET, 600584, main board), 通富微电 (TFME, 002156, main board) | Severe internal divergence in this branch: memory/packaging-testing are rising while the equipment/materials leg is basically absent — 中微公司 (AMEC, 688012, STAR Market ±20%) only +2.55%, 沪硅产业 (NSIG, 688126) +3.03%, 汇顶科技 (Goodix, 603160) +0.63%, only 2–3% under a ±20% band; overseas AMAT +2.08%, LRCX +0.54%, ASML +0.83% corroborate. Memory names are −40%~−57% over 20 sessions, so this is a deeply oversold bounce; CXMT volumes are limited for now, do not overstate |
| 4 | CXO/innovative drugs | A | WuXi AppTec raised full-year guidance, backlog RMB 66.4 billion (stale news from 8/3); the medical services sector was +5.54% on 8/4 | High (both orders and guidance are verifiable) | This is the only branch in an uptrend (康龙化成 (Pharmaron) +30.59% over 20 sessions, 昭衍新药 (JOINN) +13.05%), not an oversold bounce | Global innovative-drug demand recovering → CRDMO orders → earnings delivery | 康龙化成 (Pharmaron, 300759, ChiNext), 凯莱英 (Asymchem, 002821, main board), 昭衍新药 (JOINN Laboratories, 603127, main board) | Leader 药明康德 (WuXi AppTec) has already limit-upped and delivered, so today is a relay position; the catalyst itself is stale news |
| 5 | Compute leasing/IDC | A | 蜂助手 (Fengzhushou, 301382)'s RMB 7.670 billion compute contract (the only heavyweight announcement inside the time window) | Low (big number but thin profit, counterparty undisclosed) | Mainly short term | Signing → server procurement → revenue recognised over five years | 蜂助手 (Fengzhushou, 301382, ChiNext), 宏景科技 (Hongjing Technology, 301396, ChiNext), 协创数据 (Xiechuang Data, 300857, ChiNext) | Poor earnings quality (see 5.1); high leverage; already up several sessions, elevated position |
| 6 | Liquid cooling | B+ | 江南新材 (Jiangnan New Material, 603124)'s RMB 1.6 billion placement directed at liquid-cooling modules, with expected revenue of RMB 3.2 billion at full capacity | Medium (planned capacity, three-year build period) | Medium-term theme | Rising AI server power draw → higher liquid-cooling penetration | 江南新材 (Jiangnan New Material, 603124, main board) | Full capacity takes three years, a long-dated story; the share-issuance cap reaches 30% of pre-issuance share capital, so dilution is meaningful |
| 7 | Electrolytic aluminium/non-ferrous | B | 中孚实业 (Zhongfu Industrial, 600595) interim net profit +165.84% | Medium (cyclical delivery) | Depends on aluminium prices | High aluminium prices + captive power cost advantage | 中孚实业 (Zhongfu Industrial, 600595, main board) | A cyclical; earnings are already the rear-view mirror; only +1.51% on 8/4, no money endorsement |
| 8 | Nuclear power | C (stale) | The 7/31 State Council meeting approved 8 units (3rd trading day) | Medium | Already decayed | Equipment tenders → released over 3–5 years | 利柏特 (Libote, 605167, main board, 2 consecutive limit-ups) | Leaders have weakened (中国核电 (CNNP) −1.11%, 中国广核 (CGN Power) −2.16%); only the hot-money ladder is left |
| 9 | Power grid equipment | Pass | "15th Five-Year Plan for a New-Type Power System" (8/3) | — | Already disproven | — | — | Heavily bet on in yesterday's pre-market; went nowhere collectively on 8/4 |
2.5 Side-by-side key long/short evidence on the main line (read this section first)
"What exactly was that August 4 bullish candle" is the pivot of every judgment today. After gathering evidence in both directions, both sides have hard evidence, and neither is emotional. The strongest points are laid out side by side below; readers should weight them themselves.
2.5.1 Hard evidence supporting "this is the starting point of a valuation-pit repair"
| # | Evidence | Data |
|---|---|---|
| 1 | The interim pre-announcements are disclosed facts, not expectations | 生益科技 (Shengyi Technology, 600183) H1 net profit attributable to parent RMB 3.099–3.298 billion (+117%~+131%), half-year profit ≈ the RMB 3.334 billion of full-year 2025; 沪电股份 (WUS Printed Circuit, 002463) H1 RMB 2.83–3.00 billion (+68%~+78%); 新易盛 (Eoptolink, 300502) H1 RMB 7.0–8.0 billion (+77.6%~+102.9%); 中际旭创 (Innolight, 300308) Q1 single-quarter net profit attributable to parent RMB 5.735 billion (+262.28%) |
| 2 | What was killed was the valuation, not the earnings | The names above are −22.5%~−40.3% below their one-year market-cap peaks while profits are rising — P/E compressed from both directions, "bigger numerator, smaller denominator" |
| 3 | The price-hike chain got another cut in August (8/1, the most recent) | Electronic cloth: 7628 heavy cloth up another RMB 1.5/metre, light cloth up RMB 2/metre; the fifth round this year was completed in June, average price RMB 7.4/metre, double the 2025Q3 trough; high-end electronic-cloth capacity locked up until early 2028, with about 30% of small and mid-sized CCL plants halted for lack of cloth |
| 4 | Cost pass-through is already verified by the financials | Shengyi's pre-announcement explicitly states that "copper-clad laminate product revenue and gross profit increased" — not an assumption |
| 5 | The real overnight read-across is not the Nasdaq but the optical-communications stocks themselves | Fabrinet (FN) +16.47%, Coherent (COHR) +12.35%, Lumentum (LITE) +8.92%; five-day gains +18.08%/+33.04%/+30.30%. This is not market beta, it is an independent repricing of the AI optical-interconnect supply chain |
| 6 | The demand-side upgrade is new information from 8/3 | TrendForce on August 3 raised 2026 AI server shipment growth from 28% to nearly 31%, with combined capex of the nine major CSPs +90% YoY, above USD 886.7 billion — landing exactly the night before the 8/4 surge |
| 7 | Seal quality was the best in three days | On 8/4 the break rate was 9.8% with 0 limit-downs; by contrast on 7/31 the break rate was as high as 51.9% (107 broke). And of the 138 limit-ups, 119 were first boards (86%), so there is no high-level ladder needing to be cleared out |
2.5.2 Hard evidence supporting "this is just a one-day bounce from rotating existing money"
| # | Evidence | Data |
|---|---|---|
| 1 | The leaders had almost no incremental turnover — this is the strongest bearish evidence | Volume ratio of 8/4 turnover to the prior-5-day average: 中际旭创 (Innolight) 1.05, 新易盛 (Eoptolink) 1.04, 生益科技 (Shengyi) 0.89, 深南电路 (Shennan Circuits) 0.88, 华正新材 (Huazheng New Material) 0.76. Innolight and Eoptolink traded freely under a ±20% band and rose 13%, yet the volume ratio was only 1.0 — that is the shape of a selling-pressure vacuum / short covering, not incremental money grabbing shares |
| 2 | The only PCB reading not constrained by ±10% gave just +6.60% | All 15 limit-ups in the components sector were ±10% main-board names; the only large ChiNext name in PCB, 胜宏科技 (Victory Giant, 300476, ±20%), rose just 6.60%. Where it could have risen 20%, money only gave 6.6% — implying those 8 main-board limit-ups overstate the true strength of demand |
| 3 | The third leg (semiconductor equipment/materials) is clearly absent | 中微公司 (AMEC, 688012, STAR Market ±20%) +2.55%, 沪硅产业 (NSIG, 688126) +3.03%, 汇顶科技 (Goodix, 603160) +0.63%, 南大光电 (Nata Opto-electronic, 300346) +6.05%, 北方华创 (Naura, 002371) +7.13%. Only 2–3% under a ±20% band — less than a third of the main-board limit-up move. Overseas in sync: AMAT +2.08%, LRCX +0.54%, ASML +0.83%, TSM +0.46% |
| 4 | Zero consecutive-limit-up ladder within the main line | Of the 8 names with ≥3 consecutive limit-ups on 8/4 (传智教育 (Chuanzhi Education) 7 boards, 神雾节能 (Shenwu Energy Saving) 4 boards, 天娱数科 (Tianyu Digital), 美利云 (Meili Cloud), 恒银科技 (Hengyin Technology), 德龙汇能 (Delong Huineng), 新能股份 (Xinneng), 豪尔赛 (Haoersai)), not a single one is in optical modules, PCB or semiconductors. The market's real high-water names are in education, environmental protection and other themes unrelated to AI hardware |
| 5 | The SSE 50 closing red-to-green shows this is a zero-sum switch | SSE 50 −0.29%, banks −2.69% (0 up / 42 down, net outflow RMB 8.045 billion). The SSE 50 is down only 1.48% over 20 sessions and just −5.92% from its high — it is the only place that was not hurt in this cycle, and it is precisely the source of funds for this switch |
| 6 | The trend is far from repaired | Below the highs since March: 天孚通信 (T&S Communications) −59.6%, 华正新材 (Huazheng New Material) −59.8%, 博敏电子 (Bomin Electronics) −55.9%, 永鼎股份 (Yongding) −53.6%, 胜宏科技 (Victory Giant) −49.9%, 新易盛 (Eoptolink) −45.3%, 生益科技 (Shengyi) −41.5%, 中际旭创 (Innolight) −27.9%. Overhead sits the dense trapped supply from April–June |
| 7 | There is already evidence of deceleration on the growth side | 天孚通信 (T&S Communications, 300394) H1 growth of 35% is the lowest in three and a half years, with the path 2025 +50.15% → 2026Q1 +45.79% → H1 +35%, a monotonic quarter-by-quarter slowdown, while its P/E (TTM) of about 99x is the most expensive in this group; 新易盛 (Eoptolink) Q1 was −13.25% QoQ, the first sequential decline in nine quarters |
| 8 | Overseas, "good results got sold" | Coherent posted record revenue of USD 1.81 billion with above-consensus guidance, yet still fell about 7% after hours; Lumentum posted revenue +90% with guidance far above expectations, yet fell about 5% after hours. This is a classic peak-expectations signature |
| 9 | Earnings forecasts are so dispersed they cannot be priced | Sell-side forecasts for Innolight's 2026 net profit attributable to parent span RMB 12.312 billion / 28.072 billion / 32 billion — a 2.6x spread. When the consensus itself differs by 2.6x, "the valuation has already been digested down to a low" lacks a verifiable denominator |
| 10 | Crowding is at its limit | Innolight's single-stock turnover of RMB 49.79 billion equals 2.25% of the whole market's RMB 2.21 trillion; the "易中天" trio together totalled RMB 95.57 billion = 4.32%; the main line combined was about RMB 153.1 billion ≈ 6.9% of total market turnover. Disagreement in any one leader would simultaneously drain liquidity from twenty other names |
| 11 | CPO is an old narrative already traded three times, and it is a double-edged sword for pluggable optical modules | Spectrum-X CPO was announced as entering mass production as early as 2026/3/18, full mass production on 6/2, small-volume shipments at end-July; the A-share market has traded it at least three times. And on TrendForce's scope the 2026 CPO market is only about USD 2 billion, less than 8% of the USD 26 billion optical-module market for AI clusters. A CPO volume ramp is logically negative for pluggable optical module leaders |
2.5.3 This report's trade-off
Both sets of evidence hold, and that is exactly why this report characterises today as a "gap-up disagreement day" rather than "the start of a main upleg". If a weighting judgment must be given:
- The bulls' hardest point is "earnings have landed" (Shengyi's half-year profit ≈ last year's full year, an indisputable fact) and "the overnight surge in the optical-communications stocks themselves" (FN/COHR/LITE rather than the Nasdaq — a precise read-across chain).
- The bears' hardest point is "volume ratio ≈ 1.0" — this one item is enough to re-characterise the "net main-force inflow of RMB 5.068 billion": rising 13% under free turnover without volume expansion means that RMB 5 billion of net inflow is a change in the large-order share within existing holdings, not new money entering. This report therefore does not treat "net main-force inflow" as a standalone plus in the Section 3 master ranking, but observes it together with the volume ratio.
- The arbiter between the two is the volume in the first 30 minutes today: see Section 8.3.
3. Master ranking of single-stock catalyst strength (descending by total score, 24 names)
Note: "catalyst grade" measures the hardness of the news itself, while "total score" also layers in fundamentals, the expectation gap and position risk. Hence a stock can have a high catalyst grade but a suppressed total score because its position is too elevated (e.g. 永鼎股份 (Yongding)).
| Rank | Code | Name | Board | Branch | Catalyst grade | Total score | Core news | Catalyst path | Directness of benefit | Fundamentals/industry position | Expectation gap | Technicals & sentiment (8/4 close) | Risk | Conclusion |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 300308 | 中际旭创 (Innolight) | ChiNext ±20% | Optical modules/CPO | S | 87 | Overnight Nvidia +3.25%, Nasdaq +2.59% | North American capex → 800G/1.6T orders | Direct order positive | Global optical-module leader, P/E 79.97, market cap RMB 1.20 trillion | Medium | +13.24%, net main-force inflow RMB 5.068 billion (first in the whole market), past 20 sessions −8.91% (most resilient among peers) | Large single-day gain, gap-up disagreement | Priority deep-dive |
| 2 | 002463 | 沪电股份 (WUS Printed Circuit) | SSE/SZSE main board ±10% | PCB | S | 85 | Components sector 63 up / 0 down, net inflow RMB 6.507 billion | AI server/switch PCB volume and price both rising | Direct order positive | High-layer PCB leader, P/E 50.00, market cap RMB 215.1 billion | Medium | Limit-up +10.00%, net main-force inflow RMB 1.006 billion, past 20 sessions −13.84% | Disagreement the day after a limit-up | Priority deep-dive |
| 3 | 600183 | 生益科技 (Shengyi Technology) | SSE/SZSE main board ±10% | Copper-clad laminate | S | 84 | Same as above | High-frequency/high-speed CCL price hikes + volume | Direct order positive | Global CCL leader, P/E 69.39, market cap RMB 272.6 billion | Medium-high (past 20 sessions −25.56%, expectations not fully priced) | Limit-up +10.00%, net main-force inflow RMB 1.157 billion | Heavily an oversold-bounce profile | Priority deep-dive |
| 4 | 300502 | 新易盛 (Eoptolink) | ChiNext ±20% | Optical modules | S | 83 | Overnight US tech surge | Same as Innolight | Direct order positive | First-tier optical modules, P/E 58.16, market cap RMB 624.6 billion | Medium | +13.68%, net main-force inflow RMB 4.549 billion, past 20 sessions −12.17% | Elevated position, high volatility | Priority deep-dive |
| 5 | 603259 | 药明康德 (WuXi AppTec) | SSE/SZSE main board ±10% | CXO | A+ | 82 | Full-year guidance raised to RMB 58.5–60.5 billion, backlog RMB 66.4 billion (stale, 8/3) | Orders → earnings delivery | Direct order positive | Global CRDMO leader, P/E only 19.46 (lowest in the whole ranking), market cap RMB 421.8 billion | Low (already delivered) | Limit-up +10.00%, net main-force inflow RMB 1.833 billion, past 20 sessions +19.48% (trend up) | News already priced; today is a relay position | Watch closely |
| 6 | 002916 | 深南电路 (Shennan Circuits) | SSE/SZSE main board ±10% | PCB | S | 81 | Components sector surge | AI PCB | Direct order positive | PCB leader, P/E 62.32, market cap RMB 226.5 billion | Medium | Limit-up +10.00%, net main-force inflow RMB 563 million, past 20 sessions −19.31% | Crowding within the same sector | Watch closely |
| 7 | 300759 | 康龙化成 (Pharmaron) | ChiNext ±20% | CXO | A | 80 | H1 pre-announced net profit RMB 1.055–1.143 billion (+34%~45%) | CRDMO order recovery | Direct order positive | Second-tier CXO leader, P/E 43.30, market cap RMB 73.3 billion | Medium | +10.67%, net main-force inflow RMB 237 million, past 20 sessions +30.59% (strongest trend in the ranking) | Already up several sessions | Priority deep-dive |
| 8 | 300394 | 天孚通信 (T&S Communications) | ChiNext ±20% | Optical modules | S | 79 | Overnight US tech surge | Optical device supporting supply | Direct order positive | Optical device leader, P/E 106.48, on the high side, market cap RMB 231.3 billion | Medium | +17.45% (strongest optical module in the market), net main-force inflow RMB 2.986 billion, past 20 sessions −13.15% | High valuation, largest single-day gain | Watch closely |
| 9 | 603986 | 兆易创新 (GigaDevice) | SSE/SZSE main board ±10% | Memory | A | 78 | CXMT enters PC majors' supply chain (new, 8/4) | Domestic memory chain | Industry trend positive | Domestic NOR/MCU leader, P/E 86.91, market cap RMB 249.8 billion | High (past 20 sessions −42.58%, expectations extremely low) | +4.48%, net main-force inflow RMB 1.595 billion | Memory stocks are extremely volatile | Watch closely |
| 10 | 002821 | 凯莱英 (Asymchem) | SSE/SZSE main board ±10% | CXO | A | 77 | CXO sector resonance | Small-molecule CDMO orders | Industry trend positive | Small-molecule CDMO leader, P/E 52.51, market cap RMB 58.3 billion | Medium | Limit-up +10.00%, net main-force inflow RMB 250 million, past 20 sessions +5.56% | Following the leader, not its own catalyst | Watch closely |
| 11 | 002281 | 光迅科技 (Accelink) | SSE/SZSE main board ±10% | Optical modules | S | 76 | Overnight US market | The national team of optical modules | Direct order positive | P/E 137.69, on the high side, market cap RMB 142.7 billion | Medium | Limit-up +10.00%, net main-force inflow RMB 1.394 billion, past 20 sessions −22.26% | High valuation | Watch closely |
| 12 | 002938 | 鹏鼎控股 (Avary Holding) | SSE/SZSE main board ±10% | PCB | A+ | 75 | Components sector surge | Consumer electronics + AI PCB | Direct order positive | World's largest PCB maker, P/E 55.56, market cap RMB 206.3 billion | Medium | Limit-up +10.00%, net main-force inflow RMB 401 million, past 20 sessions only −3.71% (most resilient) | High consumer-electronics share | Watch closely |
| 13 | 688008 | 澜起科技 (Montage Technology) | STAR Market ±20% | Semiconductors | A | 74 | Semiconductor net inflow RMB 23.368 billion | Memory interface chips | Industry trend positive | Global oligopolist in memory interface chips, P/E 96.99, market cap RMB 248.1 billion | Medium | +7.01%, net main-force inflow RMB 462 million, past 20 sessions −19.60% | High valuation | Watch closely |
| 14 | 600584 | 长电科技 (JCET) | SSE/SZSE main board ±10% | Packaging & testing | A | 73 | Semiconductor fund resonance | Advanced packaging | Indirect supply-chain positive | World's third-largest OSAT, P/E 70.84, market cap RMB 117.0 billion | Medium-high (past 20 sessions −35.23%) | +7.23%, net main-force inflow RMB 1.033 billion | Low OSAT gross margin | Watch closely |
| 15 | 300476 | 胜宏科技 (Victory Giant) | ChiNext ±20% | PCB | A+ | 72 | Components sector surge | AI PCB/HDI | Direct order positive | Core AI PCB name, P/E 42.38, market cap RMB 198.3 billion | High (past 20 sessions −29.17%) | +6.60% (clearly weaker than the limit-up names in the same sector), net main-force inflow RMB 943 million | No limit-up on 8/4, falling behind in the ladder | Watch closely |
| 16 | 600206 | 有研新材 (Grirem Advanced Materials) | SSE/SZSE main board ±10% | Semiconductor materials | B+ | 63 | H1 revenue +50.35%, net profit +40.89% (new, 8/4) | Sputtering targets/microelectronic materials | Indirect supply chain (with named customers and evidence of volume supply) | Net profit attributable to parent +40.89% but ex-non-recurring only +16.98%; the bulk of the revenue increment came from platinum-group products with a 1.63% gross margin (+65%); targets (thin-film materials) are only 24% of revenue yet contribute 49.6% of gross profit; 2026H1 operating cash flow −RMB 950 million | Medium | +9.17%, net main-force inflow RMB 174 million, past 20 sessions −35.35% | P/E on an ex-non-recurring basis about 130x; target scale and gross margin both lag 江丰电子 (KFMI, 300666) | Watch only (see 5.13) |
| 17 | 002156 | 通富微电 (TFME) | SSE/SZSE main board ±10% | Packaging & testing | A | 69 | Semiconductor fund resonance | AMD packaging supply | Indirect supply-chain positive | Second-largest OSAT, P/E 58.34, market cap RMB 84.4 billion | Medium-high | +8.30%, net main-force inflow RMB 794 million, past 20 sessions −18.49% | Customer concentration | Watch closely |
| 18 | 603124 | 江南新材 (Jiangnan New Material) | SSE/SZSE main board ±10% | Liquid cooling/PCB upstream | B+ | 66 | RMB 1.6 billion placement into liquid cooling + copper oxide powder (new, 8/4) | Long-dated capacity | Industry trend positive (not an order) | Copper balls are 76.2% of revenue but at only a 2.54% gross margin; copper oxide powder 18.1% at an 11.01% gross margin; overall gross margin 4.10%; 2026H1 pre-announced ex-non-recurring +55.6%~+71.8%, faster than headline net profit, so profit quality is good; but five-year cumulative operating cash flow −RMB 3.71 billion vs cumulative net profit +RMB 790 million; P/E 61.59 (≈57 adjusted for the H1 pre-announcement), P/B 8.63 | Medium | Limit-up +10.00% (the limit-up came first, the placement after), net main-force inflow RMB 61 million | Zero named customers and zero order value for the liquid-cooling modules; the heat-sink gross margin has already collapsed from 28.24% to 5.18%; full capacity takes three years; actual dilution about 9%–12% (30% is the issuance cap, not expected dilution) | Watch closely |
| 19 | 603127 | 昭衍新药 (JOINN Laboratories) | SSE/SZSE main board ±10% | CXO | A | 67 | CXO resonance | Safety-evaluation orders | Industry trend positive | Safety-evaluation leader, P/E 67.13, market cap RMB 33.2 billion | Medium | +8.04%, net main-force inflow RMB 221 million, past 20 sessions +13.05% (trend up) | Price war in safety evaluation | Watch closely |
| 20 | 001309 | 德明利 (Demingli) | SSE/SZSE main board ±10% | Memory | A | 65 | CXMT supply chain | Memory modules | Indirect supply-chain positive | P/E only 20.13, market cap RMB 82.6 billion | Extremely high (past 20 sessions −57.21%, worst in the ranking) | +4.35%, net main-force inflow RMB 390 million, turnover rate 15.01% | Extreme volatility, brutal prior sell-off | Watch only |
| 21 | 301382 | 蜂助手 (Fengzhushou) | ChiNext ±20% | Compute leasing | A (downgraded after verification) | 48 | RMB 7.670 billion compute contract (the only heavyweight item inside the window) | Recognised over five years | Nominally a direct order, in substance a highly leveraged sublease | 89.97% of the core business is digital-goods distribution at a 16.8% gross margin; gross margin has fallen six years straight from 24.05% to 17.49% and net margin from 12.10% to 5.76%; operating cash flow negative for 4.5 consecutive years, 2026Q1 alone −RMB 367.0 million; cash of only RMB 116.7 million vs interest-bearing debt of RMB 1.448 billion; P/E 75.69 | Low | +15.49%, past 5 sessions +17.08%, past 10 sessions +30.12% (but past 20 sessions −3.71%, past 60 sessions −17.09%) | The procurement agreement still needs shareholder-meeting approval to take effect; the implied net margin of 6.5%–7.8% is in the same band as the existing thin-margin core business; the company itself says that in an extreme case it would have "a material adverse effect on the company's ability to continue as a going concern" | Pass (see 5.12) |
| 22 | 300857 | 协创数据 (Xiechuang Data) | ChiNext ±20% | AI servers/compute leasing | B (downgraded after verification) | 45 | RMB 7 billion of entrusted wealth management (new, 8/4) | Read by the market as "cash-rich" | Non-operating, and in conflict with the balance sheet (see 5.2) | Growth is real (2026Q1 revenue +192.9%, ex-non-recurring quality 97.5%, zero goodwill), but the gearing ratio is 85.89%, interest-bearing debt of RMB 25.890 billion = 5.0x net assets, and free cash flow has never been positive; P/E 67.56, P/B 22.7x (comparable IDC peers with the same model are only 2.1–5.1x) | Negative | +17.68%, net main-force inflow RMB 535 million, past 1 year +329.75% | Only RMB 2.908 billion of cash on the books, less than half the RMB 7 billion quota; 39 days ago it announced an RMB 8 billion placement of which RMB 1.5 billion is for "working capital and loan repayment" | Pass (see 5.2) |
| 23 | 600595 | 中孚实业 (Zhongfu Industrial) | SSE/SZSE main board ±10% | Electrolytic aluminium | B+ | 58 | H1 net profit +165.84% (new, 8/4) | Aluminium prices + captive power | Direct earnings positive | P/E 9.67 (lowest in the ranking), market cap RMB 27.0 billion | Medium | Only +1.51%, net main-force inflow RMB 35 million | Earnings are the rear-view mirror; money did not endorse it on 8/4 | Watch only |
| 24 | 688012 | 中微公司 (AMEC) | STAR Market ±20% | Semiconductor equipment | B (downgraded) | 52 | Pre-announced net profit +282%~+310% (stale, 8/3) | Etching equipment | Direct earnings positive but includes RMB 1.982 billion of non-recurring items | Etching equipment leader, P/E 111.53, market cap RMB 304.3 billion | Negative (the market has seen through it) | Only +2.55%, net main-force outflow RMB 241 million, past 20 sessions −24.35% | Ex-non-recurring only RMB 1.0–1.2 billion; the headline growth rate is severely distorted | Pass |
4. Single-stock scoring model (100 points total)
| Component | Point range | Scoring basis used here |
|---|---|---|
| Authority of the news source | 0–15 | Company announcement/exchange disclosure 13–15; official industry data 10–12; authoritative media 7–9; interactive platform/rumour 0–4 |
| Directness of the catalyst | 0–20 | Direct order/direct earnings 16–20; industry trend 11–15; indirect supply chain 6–10; pure concept read-across 0–5 |
| Earnings elasticity | 0–15 | Quantifiable and delivered in the current period 12–15; delivered within 1 year 8–11; full capacity in 3 years 3–7; not quantifiable 0–2 |
| Industry position and fundamentals | 0–15 | Referencing SEPA: revenue, net profit, gross margin, cash flow, gearing, moat, whether a niche leader |
| Expectation gap | 0–10 | Low position + expectations not fully priced 7–10; neutral 4–6; fully traded 0–3 |
| Theme persistence | 0–10 | Medium-term industry trend 7–10; multi-day 4–6; one-day wonder 0–3 |
| A-share trading characteristics | 0–10 | Has a core leader + ladder + follow-through 7–10; single stock moving alone 3–6; no recognisability 0–2 |
| Risk deduction | 0 to −15 | Accelerating at a high level, high share of non-recurring items, unknown counterparty, dilution, delisting/investigation risk |
Example: 中际旭创 (Innolight, 300308, ChiNext) = news source 13 + directness 18 + earnings elasticity 13 + fundamentals 14 + expectation gap 6 + persistence 9 + trading characteristics 9 − risk 5 = 87 Example: 蜂助手 (Fengzhushou, 301382, ChiNext) = news source 14 + directness 13 + earnings elasticity 5 + fundamentals 7 + expectation gap 5 + persistence 4 + trading characteristics 8 − risk 14 = 62 Example: 中微公司 (AMEC, 688012, STAR Market) = news source 15 + directness 12 + earnings elasticity 6 + fundamentals 12 + expectation gap 1 + persistence 3 + trading characteristics 4 − risk 1 = 52
5. Detailed analysis of the Top 10 names
For each, in order: related news → catalyst logic → stage of the industry branch → fundamental verification → industry position → technicals & sentiment → final judgment.
51 中际旭创300308ChiNext, price limit ±20% · Innolight
- Related news: at the 2026-08-04 US close, the Nasdaq was +2.59% at 26584.99 and Nvidia +3.25%, Meta +6.71%, Alphabet A +5.34%, Microsoft +4.69%, Amazon +4.7% (Sina Finance1). On the industry side: TrendForce says 2026 capex of the nine major cloud providers will grow 90% and raised AI server shipment growth to 31%.
- Catalyst logic: direct order positive. North American cloud capex is the direct upstream variable for optical-module revenue; what it affects is revenue, not sentiment. Media report that its orders already cover all of 2026 and part of 2027 (21jingji14) — this order-coverage claim is a media paraphrase with no original company announcement found, so this report does not treat it as an established fact.
- Stage of the industry branch: fermentation (not ignition, not climax). On 8/4 the optical-module "易中天" trio rose together, the sector had a limit-up ladder (光迅科技 (Accelink), 剑桥科技 (C&Q Technology), 永鼎股份 (Yongding) all limit-up), and the core leader traded heavily — a healthy fermentation structure; but it is still −8.91% over the past 20 sessions, meaning the trend is still repairing, not in a climax phase.
- Fundamental verification: the core business is optical modules, a perfect match with the catalyst (not a cross-industry association). P/E (TTM) 79.97, total market cap RMB 1.20 trillion. The cheapest of the three optical-module giants (Eoptolink at 58.16 is lower, T&S Communications at 106.48 the highest). Down 8.91% over 20 sessions, the most resilient among peers. Note: this report did not break down its interim report item by item; the latest revenue/gross margin/cash flow figures cannot be confirmed for now, so the assessment is based only on valuation and fund flow.
- Industry position: global optical-module leader and the absolute core leader of this cycle.
- Technicals & sentiment: +13.24% to close at RMB 1021.99, with net main-force inflow of RMB 5.068 billion, first in the whole market, and a turnover rate of only 4.56% (low turnover in a high-priced stock, stable chips). Mind the ±20% band: +13.24% still leaves room to the limit, and must not be read as "near limit-up" using ±10% instincts.
- Final judgment: priority deep-dive. It defines the quality of today's main line — fund size, fundamental fit and trend integrity are all the best in the branch. The risk is gap-up disagreement after a large single-day gain.
52 沪电股份002463SSE/SZSE main board, ±10% · WUS Printed Circuit
- Related news: on 8/4 the "components" industry was +7.07%, 63 up / 0 down, net inflow RMB 6.507 billion, with 15 limit-ups, first among all industries (THS industry scope).
- Catalyst logic: direct order positive. High-layer boards for AI servers and switches are rising in both layer count and unit price, directly lifting revenue and gross profit.
- Stage of the industry branch: mid-fermentation. The sector already has 15 limit-ups (生益科技 (Shengyi), 深南电路 (Shennan Circuits), 鹏鼎控股 (Avary), 红板科技 (Redboard), 华正新材 (Huazheng), 奥士康 (Aoshikang), 博敏电子 (Bomin) and others) — a thick ladder with core leaders all present, but the limit-up count is already elevated and the probability of disagreement the next day is rising.
- Fundamental verification: the core business is PCB, directly tied to AI hardware demand. P/E 50.00, the lowest among PCB leaders (Shennan Circuits 62.32, Avary Holding 55.56, Redboard Technology 118.94). Market cap RMB 215.1 billion. Past 20 sessions −13.84%. Detailed financials were not checked line by line; marked as not yet verified.
- Industry position: a core supplier of high-layer PCB and one of the core leaders of this PCB cycle.
- Technicals & sentiment: limit-up +10.00% to close at RMB 111.77, net main-force inflow RMB 1.006 billion, turnover rate only 3.49% (limit-up with low turnover = holders reluctant to sell).
- Final judgment: priority deep-dive. Lowest valuation + limit-up + large net inflow + low turnover makes it the best value core leader in the PCB branch.
53 生益科技600183SSE/SZSE main board, ±10% · Shengyi Technology
- Related news: same as 5.2, the components sector surge.
- Catalyst logic: direct order positive. High-frequency/high-speed copper-clad laminate is the upstream material for AI PCB, with both volume and price rising.
- Stage of the industry branch: fermentation.
- Fundamental verification: copper-clad laminate core business, P/E 69.39, market cap RMB 272.6 billion. Past 20 sessions −25.56%, the largest expectation gap among the Top 10 here — i.e. the positive is not yet fully reflected in the price. Financial details not verified line by line.
- Industry position: global copper-clad laminate leader.
- Technicals & sentiment: limit-up +10.00% to close at RMB 112.23, net main-force inflow RMB 1.157 billion, turnover 2.53% (limit-up on extremely low turnover).
- Final judgment: priority deep-dive. But this must be flagged: past 20 sessions −25.56% means the 8/4 limit-up is essentially the first bullish candle of an oversold bounce, and a trend reversal is not yet confirmed — a different animal from a "trend stock".
54 新易盛300502ChiNext, ±20% · Eoptolink
- Related news: same as 5.1, the across-the-board overnight surge in US tech.
- Catalyst logic: direct order positive, same logic source as Innolight.
- Stage of the industry branch: fermentation.
- Fundamental verification: P/E 58.16, the lowest of the three optical-module giants; market cap RMB 624.6 billion; past 20 sessions −12.17%. Financial details not verified line by line.
- Industry position: first tier of optical modules.
- Technicals & sentiment: +13.68% to close at RMB 448.00, net main-force inflow RMB 4.549 billion (second in the market), turnover 5.52%.
- Final judgment: priority deep-dive. Clear valuation advantage; risks are the same as Innolight's (gap-up disagreement, large single-day gain).
55 药明康德603259SSE/SZSE main board, ±10% · WuXi AppTec
- Related news: released its interim report on the evening of 2026-08-03 — revenue RMB 28.897 billion (+38.93%), net profit attributable to parent RMB 11.08 billion (+29.43%), and an across-the-board raise to full-year guidance: revenue from RMB 51.3–53.0 billion to RMB 58.5–60.5 billion, continuing-operations revenue growth from 18–22% to 35–39%, backlog RMB 66.4 billion (21jingji15, The Paper16). Note: this is 8/3 news and falls outside today's time window.
- Catalyst logic: direct order positive, and the size of the guidance raise exceeded prior institutional expectations.
- Stage of the industry branch: already delivered, now at a relay position. Its 8/4 limit-up dragged 凯莱英 (Asymchem) to a limit-up, 康龙化成 (Pharmaron) +10.67% and 博腾股份 (Porton Pharma) +13.58% — a complete ladder.
- Fundamental verification: the CRDMO core business matches the catalyst exactly. P/E (TTM) of only 19.46, the lowest of all 24 names here; market cap RMB 421.8 billion. Net margin about 38.3% (11.08/28.897), far above most names in this report. The RMB 66.4 billion backlog is a disclosed fact and provides revenue visibility.
- Industry position: global CRDMO leader.
- Technicals & sentiment: limit-up +10.00% to close at RMB 141.35, net main-force inflow RMB 1.833 billion, past 20 sessions +19.48% — unlike the oversold bounces in AI hardware, this is acceleration within an uptrend.
- Final judgment: watch closely (not a top pick). Its fundamentals-plus-valuation combination is the most solid in the ranking, but the catalyst was already delivered on 8/4, so buying today means buying the expectation of a second board rather than new news. If you want a "new catalyst", it does not qualify; if you want "fundamental certainty", it is first in the ranking.
56 深南电路002916SSE/SZSE main board, ±10% · Shennan Circuits
- Related news: same as 5.2.
- Catalyst logic: direct order positive, AI server/switch PCB.
- Stage of the industry branch: fermentation.
- Fundamental verification: P/E 62.32, market cap RMB 226.5 billion, past 20 sessions −19.31%. Financial details not verified line by line.
- Industry position: PCB leader (dual core businesses of package substrates and high-layer boards).
- Technicals & sentiment: limit-up +10.00% to close at RMB 332.54, net main-force inflow RMB 563 million, turnover only 1.58% (among the lowest in the market, extremely stable chips).
- Final judgment: watch closely. A low-turnover limit-up is high quality, but with 15 limit-ups already in the sector, guard against a broad disagreement.
57 康龙化成300759ChiNext, ±20% · Pharmaron
- Related news: H1 pre-announced net profit attributable to parent of RMB 1.055–1.143 billion, +34%~+45% YoY; plus sector resonance from WuXi AppTec's guidance raise (East Money17).
- Catalyst logic: direct earnings positive plus industry trend positive, layered together.
- Stage of the industry branch: the only branch in a confirmed uptrend in this report.
- Fundamental verification: CRDMO core business matches. P/E 43.30, market cap RMB 73.3 billion. Past 20 sessions +30.59%, the strongest trend of all 24 names.
- Industry position: second-tier CXO leader.
- Technicals & sentiment: +10.67% to close at RMB 39.92 (on ChiNext with ±20%, +10.67% is not a limit-up), net main-force inflow RMB 237 million, turnover 7.46%.
- Final judgment: priority deep-dive. It is the only name here that simultaneously has a new earnings pre-announcement, an upward trend and a non-extreme valuation. Risks: it has already risen for several sessions, and part of the catalyst comes from WuXi (external).
58 天孚通信300394ChiNext, ±20% · T&S Communications
- Related news: same as 5.1.
- Catalyst logic: direct order positive, optical devices supporting CPO/optical modules.
- Stage of the industry branch: fermentation, but this stock had the largest gain in the branch.
- Fundamental verification: P/E 106.48, the highest of the three optical-module giants; market cap RMB 231.3 billion; past 20 sessions −13.15%.
- Industry position: leader in the optical-device niche.
- Technicals & sentiment: +17.45%, the strongest optical-module name on 8/4, net main-force inflow RMB 2.986 billion, turnover 7.20%.
- Final judgment: watch closely. Largest gain + highest valuation = the worst risk/reward in the branch; if the sector gaps up into disagreement today, it is most likely the one that falls the most.
59 兆易创新603986SSE/SZSE main board, ±10% · GigaDevice
- Related news: new on 8/4 — PC majors HP, ASUS and Acer have begun using small quantities of CXMT DRAM chips, with qualification completed around mid-year (ITHome8, Ifeng Tech18). Layered on top, the semiconductor industry saw single-day net inflow of RMB 23.368 billion on 8/4, first in the whole market.
- Catalyst logic: industry trend positive (not a direct order). The grading must be explicit: CXMT is not listed, and GigaDevice and CXMT are on the same side of the domestic memory ecosystem — this is not "GigaDevice won an HP order". The original report also states that "the quantities adopted are very limited and the models are mainly sold outside the US". Do not over-extrapolate.
- Stage of the industry branch: the ignition phase of an oversold bounce. The memory sector is broadly −40%
−57% over the past 20 sessions (德明利 (Demingli) −57.21%, 佰维存储 (Biwin Storage) −48.82%, 江波龙 (Longsys) −46.48%), and rebounded collectively +4%+9% on 8/4. - Fundamental verification: core business is NOR Flash / MCU / DRAM, matching the domestic memory theme. P/E 86.91, market cap RMB 249.8 billion. Past 20 sessions −42.58%, expectations extremely low. Financial details not verified line by line.
- Industry position: domestic NOR Flash / MCU leader.
- Technicals & sentiment: +4.48% to close at RMB 356.02, net main-force inflow RMB 1.595 billion, turnover 9.46%. A modest gain but large inflow — the shape of "money ahead of price".
- Final judgment: watch closely. It is the only name here with all three of "new news + low position + large net inflow", but the catalyst is an indirect read-across and is less hard than optical modules and PCB.
510 凯莱英002821SSE/SZSE main board, ±10% · Asymchem
- Related news: CXO sector resonance (spillover from WuXi AppTec's guidance raise); the stock itself has no new announcement.
- Catalyst logic: industry trend positive (not its own catalyst).
- Stage of the industry branch: in sync with WuXi, already delivered.
- Fundamental verification: small-molecule CDMO core business. P/E 52.51, market cap RMB 58.3 billion, past 20 sessions +5.56%.
- Industry position: small-molecule CDMO leader.
- Technicals & sentiment: limit-up +10.00% to close at RMB 161.61, net main-force inflow RMB 250 million, turnover 1.79% (low-turnover limit-up).
- Final judgment: watch closely. Limit-up quality is good, but the catalyst comes entirely from spillover from the leader and it has no news of its own — a follower, whose persistence depends on whether WuXi can post a second board.
511 【Special risk breakdown】协创数据300857ChiNext ±20%: why this report reclassified it from "positive" to Pass · Xiechuang Data
The 8/4 post-close announcement of "plans to use up to RMB 7 billion of its own funds for entrusted wealth management" was widely read by the market as a positive showing an abundance of cash. After pulling the financial statements, that statement is in direct conflict with the company's balance sheet:
| Comparison item | Value | Ratio to the RMB 7 billion quota |
|---|---|---|
| Entrusted wealth management quota | RMB 7.000 billion | 1.00× |
| 2026Q1 cash and cash equivalents | RMB 2.908 billion | covers only 41.5% |
| 2026Q1 interest-bearing debt | RMB 25.890 billion | 3.70× |
| 2026Q1 net assets attributable to parent | RMB 5.192 billion | 0.74× |
| 2026Q1 gearing ratio | 85.89% | — |
Three contradictions along the timeline (all publicly disclosed facts):
- 2026-04-21: the company accepted a shareholder loan of up to RMB 2 billion from its second-largest shareholder (annualised rate ≤4.5%) (National Business Daily19).
- 2026-06-26: announced a plan to raise RMB 8 billion via a private placement, of which RMB 1.5 billion was explicitly for "replenishing working capital and repaying bank loans", precisely because the gearing ratio had reached 85.89% at the end of 2026Q1 (Securities Times20).
- 2026-08-04: announced that it has "RMB 7 billion of its own idle funds" available for entrusted wealth management.
In June it said "gearing is 85.89%, we need to raise RMB 1.5 billion from the market to replenish working capital and repay loans"; 39 days later it says "we have RMB 7 billion of idle own funds to invest". Moreover, placement proceeds are legally subject to dedicated-account management and cannot be counted as "own funds", so "the placement money has arrived" cannot make this self-consistent.
Other key facts:
- The announcement allocates RMB 6 billion to "agreement deposits" — an agreement deposit is a cash-management tool for corporate settlement accounts and is not a wealth-management investment in substance; against a backdrop of RMB 25.89 billion of interest-bearing debt and receivables already pledged to secure RMB 4.248 billion of finance leasing, it is more likely a deposit-balance arrangement required by the banks. This is analytical inference, not company disclosure.
- Free cash flow: −RMB 12.63 billion in 2025 and −RMB 7.31 billion in 2026Q1; the company has never generated positive free cash flow since listing, with all growth funded by debt and equity issuance.
- The depreciation cliff has not yet landed: 2026Q1 fixed assets RMB 11.248 billion + construction in progress RMB 6.039 billion; actual depreciation charged in 2025 was only RMB 598 million. On a five-year straight-line basis, steady-state annual depreciation would be about RMB 2.1–3.3 billion (this report's calculation, not company disclosure). The company has still not publicly stated the depreciation life of its compute servers, and has not replied even after an investor formally asked in June 2026.
- The company has never disclosed by name the customers, contract amounts or terms of its compute business, which already accounted for 43.6% of 2025 revenue.
- P/B 22.7x, versus only 2.1–5.1x for IDC peers with the same business model (宝信软件 (Baosight Software) 5.14×, 光环新网 (Sinnet) 2.14×); the 30% ROE is mainly levered out of 5.0x gearing, and that leverage is already at the ceiling of an 85.89% gearing ratio.
Positive facts that deserve a fair record: the growth is real (2026Q1 revenue +192.9%, net profit attributable to parent +343.4%; 2026H1 pre-announced RMB 1.5–1.9 billion, +247%~+340%); ex-non-recurring quality is high (2026Q1 ex-non-recurring RMB 751 million ≥ headline RMB 750 million, so it does not rely on non-recurring items); goodwill is zero; there is no lock-up expiry overhang; and the pledge ratio is only 7.27%. If it delivers RMB 4 billion of net profit attributable to parent in 2026, the forward P/E would be about 29.5x, comparable to 工业富联 (Foxconn Industrial Internet) at 29.3×.
Conclusion: Pass. Not because the company is fabricating or the growth is fake, but because — the announcement being read as a positive today cannot have its "RMB 7 billion of own funds" wording supported by the balance sheet, and the company stays silent on the three pieces of information that determine its value (depreciation life, compute customers, contract amounts). On a stock already up 329.75% over the past year at a 22.7x P/B, using an announcement that conflicts with the books as a reason to buy does not produce a workable risk/reward. (Recorded as a factual note only, with no inference drawn: in April 2026 the second-largest shareholder priced an inquiry-based transfer at RMB 241.37 per share, almost exactly matching the 8/4 close of RMB 241.00.)
512 【Special risk breakdown】蜂助手301382ChiNext ±20%: the only heavyweight announcement inside the window, and why it is still a Pass · Fengzhushou
This is the only heavyweight company announcement inside today's news window, and also the one most likely to lead people astray via the number "RMB 7.670 billion". After reading the original announcement (No. 2026-040) and checking the financials:
① The company is not a compute company. 2025 revenue mix: digital goods integrated operations RMB 1.880 billion, 89.97% of revenue, 16.83% gross margin (buying, distributing and marking up phone credit/data/video membership vouchers); IoT data operations RMB 137 million (6.56%, and down 3.85% YoY in 2025); cloud terminal technology and cloud services only RMB 56 million (2.69%).
② There are almost no compute assets on the books. 2026Q1 fixed assets RMB 230.5 million, construction in progress RMB 138.9 million, intangible assets RMB 683.2 million. Of these, intangibles jumped from RMB 9.36 million in 2024 to RMB 688 million, and the company's "2024 Annual Financial Statement Report" states verbatim: "the increase in intangible assets from the beginning of the period was mainly due to the company acquiring land use rights during the period"; construction in progress is the "Fengzhushou Future Tower" project — i.e. that money bought land and an office building, not data halls and servers (Shenzhen Stock Exchange original21). Existing compute capacity relies on renting third-party IDC.
③ The contracting entity is a company founded five months ago. 雅安云算 (Ya'an Yunsuan) was established in March 2026 with registered capital of RMB 50 million — the contract value is 153 times its registered capital. The announcement also states that "over the past three years, the company and Ya'an Yunsuan have had no similar transactions" with them (Companies A/B), i.e. no history of cooperation.
④ The core business fundamentals keep deteriorating (verified against akshare financials):
| Metric | 2023 | 2024 | 2025 | 2026Q1 |
|---|---|---|---|---|
| Gross margin | 24.05% | 21.58% | 18.59% | 17.49% |
| Net profit margin | 12.10% | 8.66% | 7.28% | 5.76% |
| Growth in net profit attributable to parent | +12.5% | −5.86% | +15.19% | +1.75% |
| Net operating cash flow | −RMB 228.9 million | −RMB 137.5 million | +RMB 89.8 million | −RMB 367.0 million |
| Cash and cash equivalents | RMB 458.5 million | RMB 286.3 million | RMB 276.9 million | RMB 116.7 million |
| Gearing ratio | 17.11% | 35.90% | 43.67% | 47.06% |
Revenue CAGR over three years is about 33%, but gross margin and net margin are both in one-way decline — the growth was bought with concessions. Operating cash flow was negative for 4.5 of the years from 2021 to 2025. In 2026Q1, receivables of RMB 1.146 billion + prepayments of RMB 1.194 billion = RMB 2.340 billion, 63.0% of total assets and more than the entire net assets attributable to parent (RMB 1.910 billion).
⑤ Earnings quality: this "big order" does not improve the profit structure. RMB 4.608 billion ÷ five years = RMB 921.6 million of tax-inclusive revenue per year, corresponding to average annual net profit of RMB 60–72 million, an implied net margin of 6.5%–7.8% (6.9%–8.3% excluding tax) — essentially the same level as the company's existing thin-margin distribution business (5.76%–7.28%). That is: using heavy assets plus high leverage to earn a margin about as thin as the existing asset-light business.
⑥ The funding gap is a hard constraint. The announcement states explicitly that within the RMB 3.062 billion procurement, "payment from own funds is expected to account for 5% to 20%, and finance-lease funding 80% to 95%". Yet the payment clause of the procurement agreement reads: "within 5 working days after the agreement is signed and takes effect, Party A shall pay Party B a prepayment of 30% of the total amount agreed in the agreement" — taken literally that is about RMB 919 million, while the company's cash at the end of 2026Q1 was only RMB 116.7 million. The board separately says this will use "batched ordering and batched payment"; there is interpretive space between the two statements and the announcement does not clarify it (flagged here as an open item).
⑦ The company's own risk warning is unusually heavy (announcement verbatim):
"Under the finance-lease model, the lessor has the right to repossess and auction the compute servers, resulting in the loss of the company's core assets and a halt to compute services, and potentially triggering cross-default and property-preservation measures, with a material adverse effect on the company's ability to continue as a going concern."
⑧ A procedural fact widely missed: the RMB 3.062 billion procurement agreement has not yet taken effect. The announcement states that the proposal "still needs to be submitted to the company's shareholders' meeting for approval", and Dentons' legal opinion says the procurement agreement "takes effect from the date it is approved by Fengzhushou's shareholders' meeting". The services contract is already effective, but without servers no service can be provided. Until the shareholders' meeting approves it, this transaction is legally incomplete.
⑨ The terms are asymmetric. Company A's late-delivery penalty is "RMB 250,000 per day, capped at RMB 5 million" — the cap is only 0.16% of the RMB 3.062 billion purchase value. If Company A fails to deliver on time, the company's recourse against its supplier is nearly negligible, while it still bears breach liability toward downstream Company B. In addition, the announcement declares that A and B are unrelated to Fengzhushou, but it does not declare that Company A and Company B are unrelated to each other (cannot be verified, flagged as an open item).
⑩ A technical detail worth pressing on: the services contract's network configuration specifies "including China Mobile public-network bandwidth 4G, excluding dedicated lines". For large-scale distributed training clusters that configuration is clearly on the low side (training normally needs IB/RoCE high-speed interconnect and large egress bandwidth), and looks more suited to inference/rendering/offline batch workloads — if so, unit compute pricing and renewal elasticity would be lower than the market imagines for "AI training intelligent-compute leasing". This is an analytical judgment, not company disclosure.
⑪ Scale comparison (the most jarring set of numbers): the 15.49% single-day gain on 8/4 added about RMB 1.57 billion of market cap, which is 4.4–5.2x the project's total expected net profit over its full five-year life (RMB 300–360 million). The implied P/E on the incremental profit is 163–195x.
⑫ On the shareholder side: the largest tradable shareholder, 海峡创新 (Haixia Innovation) (8.12% stake), has pledged 80.92% of its holding cumulatively, with 云南国际信托 (Yunnan International Trust) as pledgee; in May 2026 the pre-IPO lock-up shares were released (controlling shareholder 罗洪鹏 (Luo Hongpeng) holds 22.07%), and the −17.09% over the past 60 sessions coincides with that release date (correlation, not proof of causation). Goodwill is only RMB 813,200, so there is no goodwill risk.
Conclusion: Pass. This is indeed a real order with a contract, a value and a supporting legal opinion (not a concept read-across), but its nature is "a heavy-asset sublease business that levers the company's own balance sheet, earns the spread between upstream and downstream, and concentrates credit risk on a single anonymous customer". With cash of RMB 116.7 million, operating cash flow negative for years, six consecutive years of declining core gross margin and a procurement agreement not yet in effect, the single-day increase in market cap already equals 4–5x the project's total five-year net profit — the risk/reward does not hold.
513 【Supplementary verification】有研新材600206and 江南新材 (Jiangnan New Material, 603124): the true quality of two "earnings/expansion" positives · Grirem Advanced Materials
有研新材 (Grirem Advanced Materials, 600206, SSE main board) — headline growth +40.89%, ex-non-recurring only +16.98%
- The revenue mix decides everything: in 2025, platinum-group products (auto exhaust catalyst materials) generated RMB 3.992 billion of revenue, 41.8% of the total, but at a gross margin of only 1.63%, contributing just 7.6% of gross profit; thin-film materials (i.e. semiconductor sputtering targets) generated RMB 2.288 billion, 24.0% of revenue, at an 18.63% gross margin, yet contributed 49.6% of gross profit.
- The 50% revenue growth this period came mostly from platinum-group +65% (1.63% gross margin) rather than targets — which is exactly why net profit attributable to parent was +40.89% while ex-non-recurring was only +16.98% (the gap comes from RMB 30.67 million of investment income, RMB 18.38 million of fair-value changes and so on). On a trailing ex-non-recurring basis, the P/E is about 130x.
- Cash flow has deteriorated badly: 2026H1 operating cash flow was −RMB 950.4 million (5.2x the full-year net profit attributable to parent); inventory RMB 1.886 billion (+49.24%), receivables RMB 1.489 billion (+44.04%), cash −55.91%; asset impairment (inventory write-down) −RMB 83.666 million, 4.2x the prior-year period.
- The evidence on targets themselves is solid (this deserves a fair record): the reply to the Shanghai Stock Exchange's inquiry letter lists customers verbatim as "subsidiaries of China Electronics Technology Group, BOE A, HiSilicon Optoelectronics, TSMC, 芯联集成 (Xinlian Integrated), CXMT and YMTC"; the 2026 interim report states that "in the first half, 319 sample-validation products were advanced in parallel, with 105 cumulatively completing full-process reliability qualification and entering volume supply, covering 7nm and below advanced logic, next-generation HBM memory, 3D NAND stacking and advanced packaging", and that "target product sales revenue grew more than 45% YoY".
- But "number one in domestic targets" does not hold up against public filings: 江丰电子 (KFMI, 300666, ChiNext) had 2025 ultra-high-purity target revenue of RMB 2.850 billion at a 34.24% gross margin, both better than Grirem's thin-film materials at RMB 2.288 billion / 18.63%.
- The structural change under way is the key point: the company plans to transfer a 45% stake in 有研稀土 (GRIREM Rare Earth) (priced at RMB 454.2 million) and a 51% stake in 有研国晶辉 (GRINM Guojinghui) (priced at RMB 243.2 million) to 中国有研 (China GRINM), after which neither will be consolidated, with the aim of "further focusing on the integrated-circuit core business". If completed, the company would go from "a non-ferrous new-materials general store" to something close to a pure semiconductor target platform — that is the real pricing logic behind a 96x P/E, but it still requires shareholders' meeting approval.
- Claims circulating in the market that must be flagged as unconfirmable: ① "SMIC is one of its target customers" — "SMIC" cannot be found anywhere in the full inquiry-letter reply or the full 2026 interim report; ② "passed TSMC 5nm qualification" — official filings do not specify a process node; ③ "100% domestic share in cobalt targets, 60%+ in copper targets" — not found in any official document; ④ "target gross margin around 40%" — in direct conflict with the 18.63% disclosed in the annual report. All four lack official evidence and this report does not accept them.
- Judgment: watch only. The catalyst tier is indirect supply-chain beneficiary (with named customers and evidence of volume supply, so the evidence quality is relatively good within that tier), but the high growth in the current statements is driven mainly by low-margin trading-type business, the ex-non-recurring valuation is extremely high, and cash flow is a large net outflow.
江南新材 (Jiangnan New Material, 603124, SSE main board) — the two placement projects are completely different in nature and cannot be lumped together
- The core business is essentially PCB electroplating copper consumables, not a PCB maker: in 2025, copper ball revenue was RMB 7.868 billion, 76.2% of the total, but at a gross margin of only 2.54% (copper prices pass straight through plus a wafer-thin processing fee); copper oxide powder RMB 1.871 billion, 18.1%, at an 11.01% gross margin; high-precision copper-based heat sinks RMB 308.8 million, 3.0%. Overall gross margin is only 4.10%.
- The copper oxide powder project = genuine capacity expansion. The product is used in PCB copper electroplating (HDI, IC substrates, FPC, mSAP and other high-precision boards) and is a real existing business; the IPO prospectus states that it covers 28 of the top 30 PCB makers by composite ranking (including 鹏鼎控股 (Avary Holding), 深南电路 (Shennan Circuits), 胜宏科技 (Victory Giant), 奥士康 (Aoshikang) and others). This AI → high-end PCB → electroplating consumables transmission chain is real and verifiable.
- The liquid-cooling module project = clearly more story than substance. What exists today is "high-precision copper-based heat sinks" (copper base plates), not finished modules; the announcement itself says the proceeds are to "open up back-end processes such as CNC machining, microchannel machining and surface cleaning, and automated surface inspection" and to "fill a capacity gap" — i.e. the module-level production line is not yet complete. More importantly: the heat-sink gross margin has already collapsed from 28.24% (2023) → 24.08% (2024) → 5.18% (2025) (back-solving implies only about 2.8% in 2025H2 alone), so the volume was bought with low-margin orders. And the announcement never discloses a single customer name or a single order value anywhere; searches also found no public evidence of cooperation with any server maker, CDU maker or Nvidia cold-plate supply chain (the Group A cold-plate suppliers announced by Nvidia at GTC 2026 were AVC, Cooler Master, Jentech and Delta — Jiangnan New Material is not among them).
- Profit quality is actually good: 2026H1 pre-announced net profit attributable to parent RMB 160–175 million (+51.5%~+65.7%), with ex-non-recurring RMB 144.5–159.5 million (+55.6%~+71.8%), growing faster than the headline figure.
- But cash flow is the fatal flaw: cumulative operating cash flow over the five years 2021–2025 was −RMB 3.71 billion, against cumulative net profit attributable to parent of only +RMB 790 million (2025 OCF/net profit = −4.03x). The cause is that upstream electrolytic copper smelters give almost no credit terms (2026Q1 accounts payable were just RMB 104 million) while downstream PCB makers demand them — every extra RMB 1 of revenue requires extra working capital.
- Two facts that correct market perception: ① dilution is not 30%. The 43.72 million shares / 30% is the issuance cap; based on the 8/4 close of RMB 110.18, actual dilution works out to about 9.1%, or about 11.1% at a floor price of 80% of that. ② It is raising again before the previous proceeds are spent: net IPO proceeds were RMB 331.1 million, and as of 2026-06-30 utilisation was only 61.50%, while this placement seeks RMB 1.6 billion = 4.83x the net IPO amount.
- The RMB 8 billion of revenue at full capacity must be discounted: on the current product mix, RMB 4.8 billion of copper oxide powder corresponds to about RMB 530 million of gross profit; RMB 3.2 billion of liquid-cooling modules at the current 5% heat-sink gross margin corresponds to only RMB 160 million. Big revenue ≠ big profit, and the announcement itself notes that it "does not constitute a profit forecast or an earnings commitment". R&D spending is only 0.48% of revenue, so the moat comes more from scale and customer qualification than from a technology premium.
- Judgment: watch closely (the copper oxide powder line); the liquid-cooling line awaits order verification. The catalyst tier is industry trend, and the placement announcement itself contains no direct order at all.
6. Pass list
| Code | Name | Board | Concept | Why it was associated | Reason for Pass | Keep watching |
|---|---|---|---|---|---|---|
| 688012 | 中微公司 (AMEC) | STAR Market | Semiconductor equipment | Net profit pre-announced +282%~+310% | The growth comes mainly from RMB 1.982 billion of fair-value changes and other non-recurring items; ex-non-recurring is only +85.61%~+122.73%; also stale 8/3 news, already reacted on 8/4 with net main-force outflow of RMB 241 million | Yes (watch the ex-non-recurring trend) |
| 601985 | 中国核电 (CNNP) | SSE main board | Nuclear power | 7/31 approval of 8 units | Stale news on its 3rd trading day; the leader closed −1.11% on 8/4, sector funds have already left | No |
| 003816 | 中国广核 (CGN Power) | SZSE main board | Nuclear power | Same as above | Closed −2.16% on 8/4; the approval positive failed to drive the price | No |
| 601611 | 中国核建 (China Nuclear Engineering) | SSE main board | Nuclear power | Same as above | Although +4.39%, net main-force outflow was RMB 201 million — retail investors carrying the sedan chair | No |
| 601700 | 风范股份 (Fengfan Power) | SSE main board | Power grid equipment | 15th Five-Year power plan | That policy was disproven yesterday, and grid equipment went nowhere across the board on 8/4; this stock is already on 2 consecutive limit-ups with no fundamental support | No |
| 000533 | 顺钠股份 (Shunna Electric) | SZSE main board | Power grid equipment | Same as above | 2 consecutive limit-ups but with a turnover rate as high as 20.00%, a textbook high-level gamble; the policy has already been disproven | No |
| 601238 | 广汽集团 (GAC Group) | SSE main board | NEV | July NEV sales +54.20% | Sales growth has not produced profit: P/E is −6.32 (trailing loss); closed −3.05% on 8/4 against the market — investors are not buying it | Yes (watch for a turnaround) |
| 000591 | 太阳能 (CECEP Solar Energy) | SZSE main board | Solar power operation | Received RMB 940 million of subsidies in July | Receiving subsidies is a cash-flow improvement, not new profit; closed −1.08% on 8/4 | No |
| 000970 | 中科三环 (SanHuan Magnetics) | SZSE main board | Magnetic materials | Plans to acquire control of 中电磁声 | Only a "plan to acquire", with neither the target's scale nor the price disclosed, so it cannot be assessed; P/E 164.58 is on the high side | Yes (wait for the price) |
| 002568 | 百润股份 (Bairun) | SZSE main board | Food & beverage | H1 net profit +23.08% | Unrelated to today's main line; closed −1.70% on 8/4, and the liquor/food & beverage sector was weak overall | No |
| 000783 | 长江证券 (Changjiang Securities) | SZSE main board | Brokerage | Plans an RMB 100–200 million buyback | The buyback is only about 0.2%–0.4% of market cap, so the signal outweighs the substance | No |
| 688100 | 威胜信息 (Wasion Information) | STAR Market | Smart metering | July bid wins of RMB 80.96 million | The bid value is only 0.53% of market cap, too little elasticity | No |
| 600276 | 恒瑞医药 (Hengrui Pharmaceuticals) | SSE main board | Innovative drugs | SHR-A2009 Phase II approval | A Phase II approval is routine R&D progress, far from commercialisation; only +0.79% on 8/4 with net main-force outflow | Yes (watch for Phase III) |
| 002487 | 大金重工 (Dajin Heavy Industry) | SZSE main board | Shipbuilding/offshore wind | RMB 1 billion shipbuilding contract | Delivery in batches only in 2029, so revenue recognition is very far out; the contract is about 3.3% of market cap | Yes |
| 300349 | 金卡智能 (Goldcard Smart Group) | ChiNext | Smart metering | RMB 890 million gas meter contract | The contract is 20.5% of market cap (RMB 4.335 billion), but gas meters are low-margin and delivered in instalments over many years, and the stock was only +0.39% on 8/4 with no fund attention | Yes |
| 688510 | 航亚科技 (Hangya Technology) | STAR Market | Aviation components | Interim pre-announcement | H1 net profit down 10.15%~18.32% YoY — a negative, not a positive | No |
| 301382 | 蜂助手 (Fengzhushou) | ChiNext | Compute leasing | RMB 7.670 billion compute contract | The procurement agreement still needs shareholders' meeting approval to take effect; cash of RMB 116.7 million vs a literal requirement to pay a 30% prepayment (about RMB 919 million) within 5 working days; implied net margin of 6.5%–7.8% is in the same band as the thin-margin core business; operating cash flow negative for 4.5 consecutive years; the company itself says that in an extreme case there would be "a material adverse effect on its ability to continue as a going concern" | Yes (track the shareholders' meeting and the finance-lease execution) |
| 300857 | 协创数据 (Xiechuang Data) | ChiNext | AI servers/compute | RMB 7 billion of entrusted wealth management | Only RMB 2.908 billion of cash on the books, less than half the quota; 39 days ago it announced an RMB 8 billion placement of which RMB 1.5 billion is for "working capital and loan repayment"; interest-bearing debt of RMB 25.890 billion = 5.0x net assets; P/B 22.7x vs 2.1–5.1x for IDC peers; both the depreciation life and the compute customers are withheld | Yes (track depreciation charges in the interim report) |
| 600206 | 有研新材 (Grirem Advanced Materials) | SSE main board | Semiconductor materials | H1 revenue +50.35%, net profit +40.89% | Ex-non-recurring only +16.98%, with the bulk of the revenue increment from platinum-group products at a 1.63% gross margin; 2026H1 operating cash flow −RMB 950 million; ex-non-recurring P/E about 130x | Yes (wait for the statements after the rare-earth/infrared divestitures) |
| — | *ST 亚世 and 8 others | — | Delisting risk | Warnings issued together on the evening of 8/4 | Delisting-risk warnings / termination-of-listing alerts — avoid absolutely | No (avoid) |
7. Intra-branch rankings
7.1 AI compute hardware · optical modules/CPO
| Rank | Stock | Board | Role | Directness of benefit | Fundamental support | Trading recognisability | Conclusion |
|---|---|---|---|---|---|---|---|
| 1 | 中际旭创 (Innolight, 300308) | ChiNext ±20% | Leader/core | Direct order | P/E 79.97; past 20 sessions −8.91%, most resilient among peers | Highest (net main-force inflow RMB 5.068 billion, first in the market) | Priority deep-dive |
| 2 | 新易盛 (Eoptolink, 300502) | ChiNext ±20% | Core | Direct order | P/E 58.16, lowest of the three giants | High (net inflow RMB 4.549 billion) | Priority deep-dive |
| 3 | 天孚通信 (T&S Communications, 300394) | ChiNext ±20% | Niche leader (optical devices) | Direct order | P/E 106.48, the highest | High (+17.45%, the largest gain) | Watch closely (worst risk/reward) |
| 4 | 光迅科技 (Accelink, 002281) | SSE/SZSE main board ±10% | Core | Direct order | P/E 137.69, on the high side | High (limit-up + net inflow RMB 1.394 billion) | Watch closely |
| 5 | 剑桥科技 (C&Q Technology, 603083) | SSE/SZSE main board ±10% | High-beta name | Direct order | P/E 156.27, high | Medium (limit-up + net inflow RMB 627 million) | Watch only |
| 6 | 永鼎股份 (Yongding, 600105) | SSE/SZSE main board ±10% | Back row/high-level gamble | Indirect supply chain | P/E 488.18, past 20 sessions −30.09% | Extremely high but poor quality (turnover 14.29%, net inflow RMB 1.669 billion) | Watch only |
- The hardest name: 中际旭创 (Innolight, 300308) — best in the branch on fundamental fit, fund size and trend integrity.
- Highest trading recognisability: 中际旭创 (Innolight, 300308); the quality of its intraday follow-through directly defines the quality of today's main line.
- Who is chasing: 永鼎股份 (Yongding, 600105) — a 488x P/E and 14.29% turnover make it sentiment-driven rather than fundamentals-driven.
- Pass: no name in this branch needs a full Pass for now, but Yongding should not be chased higher.
7.2 AI compute hardware · PCB/copper-clad laminate
| Rank | Stock | Board | Role | Directness of benefit | Fundamental support | Trading recognisability | Conclusion |
|---|---|---|---|---|---|---|---|
| 1 | 沪电股份 (WUS Printed Circuit, 002463) | SSE/SZSE main board ±10% | Core | Direct order | P/E 50.00, lowest among PCB leaders | High (limit-up + net inflow RMB 1.006 billion, turnover only 3.49%) | Priority deep-dive |
| 2 | 生益科技 (Shengyi Technology, 600183) | SSE/SZSE main board ±10% | Upstream leader (CCL) | Direct order | P/E 69.39; past 20 sessions −25.56%, largest expectation gap | High (limit-up + net inflow RMB 1.157 billion, turnover 2.53%) | Priority deep-dive |
| 3 | 深南电路 (Shennan Circuits, 002916) | SSE/SZSE main board ±10% | Core | Direct order | P/E 62.32 | High (limit-up, turnover only 1.58%, the steadiest chips) | Watch closely |
| 4 | 鹏鼎控股 (Avary Holding, 002938) | SSE/SZSE main board ±10% | Leader (world's largest) | Direct order | P/E 55.56; past 20 sessions only −3.71%, most resilient | Medium (limit-up + net inflow RMB 401 million) | Watch closely |
| 5 | 胜宏科技 (Victory Giant, 300476) | ChiNext ±20% | A core name falling behind | Direct order | P/E 42.38 (lowest in the sector) | Medium-low — only +6.60% on 8/4, no limit-up | Watch closely (the dividing line between catching up and falling behind) |
| 6 | 红板科技 (Redboard Technology, 603459) | SSE/SZSE main board ±10% | High-beta name | Direct order | P/E 118.94, on the high side | High but turnover of 21.13% is overheated | Watch only |
| 7 | 华正新材 (Huazheng New Material, 603186) | SSE/SZSE main board ±10% | Back row/oversold bounce | Indirect supply chain | P/E 58.79; past 20 sessions −41.39% | Medium (limit-up but net inflow of only RMB 88 million) | Watch only |
| 8 | 江南新材 (Jiangnan New Material, 603124) | SSE/SZSE main board ±10% | Upstream consumables (niche) | Industry trend (not an order) | Overall gross margin only 4.10%; ex-non-recurring growth is good but five-year cumulative OCF is −RMB 3.71 billion | Medium (limit-up but net inflow of only RMB 61 million) | Watch closely |
- The hardest names: 沪电股份 (WUS Printed Circuit, 002463) (lowest valuation + limit-up + large net inflow + low turnover) and 生益科技 (Shengyi Technology, 600183) (largest expectation gap).
- Highest trading recognisability: 深南电路 (Shennan Circuits, 002916) — a limit-up on 1.58% turnover is the best seal quality in the whole sector.
- The key dividing line: 胜宏科技 (Victory Giant, 300476) failed to limit up on 8/4 and has fallen behind — catching up today = money spilling over and a healthy sector; staying weaker than peers = money concentrating into a handful of leaders.
- Leaning Pass: 红板科技 (Redboard Technology, 603459) (21% turnover overheated + 119x P/E) and 华正新材 (Huazheng New Material, 603186) (a pure oversold bounce with low fund attention).
7.3 Semiconductors/memory
| Rank | Stock | Board | Role | Directness of benefit | Fundamental support | Trading recognisability | Conclusion |
|---|---|---|---|---|---|---|---|
| 1 | 兆易创新 (GigaDevice, 603986) | SSE/SZSE main board ±10% | Core | Industry trend (indirect) | P/E 86.91; past 20 sessions −42.58%, expectations extremely low | Highest (net inflow RMB 1.595 billion on a gain of only +4.48% = money ahead of price) | Watch closely |
| 2 | 澜起科技 (Montage Technology, 688008) | STAR Market ±20% | Niche leader (memory interface) | Industry trend | P/E 96.99; a global oligopoly structure | Medium (+7.01%, net inflow RMB 462 million) | Watch closely |
| 3 | 长电科技 (JCET, 600584) | SSE/SZSE main board ±10% | OSAT leader | Indirect supply chain | P/E 70.84; past 20 sessions −35.23% | Medium-high (net inflow RMB 1.033 billion) | Watch closely |
| 4 | 通富微电 (TFME, 002156) | SSE/SZSE main board ±10% | Second-largest OSAT | Indirect supply chain | P/E 58.34 | Medium (net inflow RMB 794 million) | Watch closely |
| 5 | 有研新材 (Grirem Advanced Materials, 600206) | SSE/SZSE main board ±10% | Upstream materials (targets) | Indirect supply chain | Ex-non-recurring only +16.98%; OCF −RMB 950 million; ex-non-recurring P/E ≈130 | Medium (+9.17%, net inflow RMB 174 million) | Watch only |
| 6 | 德明利 (Demingli, 001309) | SSE/SZSE main board ±10% | High-beta name (memory modules) | Indirect supply chain | P/E 20.13, low; past 20 sessions −57.21%, the worst in the ranking | Medium (turnover 15.01%, overheated) | Watch only |
| 7 | 中微公司 (AMEC, 688012) | STAR Market ±20% | Equipment leader | Direct earnings but includes non-recurring items | Ex-non-recurring only +85.61%~+122.73%; the +310% headline is distorted | Low (net main-force outflow RMB 241 million) | Pass |
- The hardest name: 兆易创新 (GigaDevice, 603986) — the only name in this branch with a complete logic, ticking all three of "new news + low position + large net inflow".
- Highest trading recognisability: GigaDevice again; its "modest gain with heavy inflow" shape is superior to "big gain with outflow".
- Who is chasing: 德明利 (Demingli, 001309), 佰维存储 (Biwin Storage, 688525) and other module names — deeply oversold, high-beta bounces.
- Pass: 中微公司 (AMEC, 688012) — the market has already voted with "only +2.55% plus net main-force outflow of RMB 241 million".
7.4 CXO/innovative drugs
| Rank | Stock | Board | Role | Directness of benefit | Fundamental support | Trading recognisability | Conclusion |
|---|---|---|---|---|---|---|---|
| 1 | 药明康德 (WuXi AppTec, 603259) | SSE/SZSE main board ±10% | Absolute leader/core | Direct order | P/E 19.46, lowest in the ranking; net margin about 38.3%; backlog RMB 66.4 billion | Highest (limit-up + net inflow RMB 1.833 billion) | Watch closely (news already delivered) |
| 2 | 康龙化成 (Pharmaron, 300759) | ChiNext ±20% | Second-tier leader | Direct earnings (its own pre-announcement) | P/E 43.30; past 20 sessions +30.59%, strongest trend in the ranking | High (+10.67%, net inflow RMB 237 million) | Priority deep-dive |
| 3 | 凯莱英 (Asymchem, 002821) | SSE/SZSE main board ±10% | Niche leader (small-molecule CDMO) | Industry trend (follower) | P/E 52.51 | High (limit-up, turnover only 1.79%) | Watch closely |
| 4 | 昭衍新药 (JOINN Laboratories, 603127) | SSE/SZSE main board ±10% | Niche leader (safety evaluation) | Industry trend | P/E 67.13; past 20 sessions +13.05% | Medium (+8.04%, net inflow RMB 221 million) | Watch closely |
| 5 | 博腾股份 (Porton Pharma, 300363) | ChiNext ±20% | High-beta name | Industry trend | P/E 74.99, market cap only RMB 9.6 billion | Medium (+13.58%, turnover 10.34%) | Watch only |
| 6 | 泰格医药 (Tigermed, 300347) | ChiNext ±20% | Back row (clinical CRO) | Industry trend | P/E 57.31 | Low (+3.47%, net main-force outflow RMB 37 million) | Watch only |
- The hardest name: 药明康德 (WuXi AppTec, 603259) — the best fundamentals-plus-valuation combination in the ranking, but its catalyst has already been delivered.
- Highest trading recognisability: 康龙化成 (Pharmaron, 300759) — the only one simultaneously offering "a new pre-announcement of its own + an upward trend + a non-extreme valuation".
- Who is chasing: 凯莱英 (Asymchem, 002821) and 昭衍新药 (JOINN Laboratories, 603127) are riding the leader's spillover with no news of their own.
- Leaning Pass: 泰格医药 (Tigermed, 300347) — net main-force outflow on a day the sector surged, meaning money does not buy it.
8. Opening verification signals for today
8.1 Call-auction signals
- The size of the gap-up is today's first observation point: with the Nasdaq +2.59% overnight, AI hardware is likely to gap up. A 3%–5% gap-up in main-board leaders is healthy; a gap-up above 7% calls for caution about a spike and fade.
- For the three ChiNext optical-module giants (中际旭创 (Innolight) 300308, 新易盛 (Eoptolink) 300502, 天孚通信 (T&S Communications) 300394), mind the ±20% band — an 8% gap-up is not close to the limit and leaves ample room, but by the same token the room to fall is larger.
- Where the one-word boards appear: if they cluster in "big-order-driven" names like 蜂助手 (Fengzhushou, 301382) rather than "fundamentals-driven" names like Innolight, it means today is hot-money-led rather than institution-led, and persistence should be marked down.
8.2 Sector signals
- Whether the components/PCB sector can produce 3 or more fast limit-ups again: with 15 limit-ups already on 8/4, only 3–5 seals today plus more broken boards would be a ladder decay signal.
- Whether the core leaders follow with volume: 生益科技 (Shengyi Technology, 600183) and 沪电股份 (WUS Printed Circuit, 002463) are the core leaders of this PCB cycle; core leaders failing to limit up while back-row names run wild = a sign of an imminent ebb.
- Whether semiconductors can sustain net inflows: the sector's single-day net inflow of RMB 23.368 billion on 8/4 was first in the market; if it flips to net outflow today, the 8/4 "record inflow" should be re-characterised as a one-off reallocation rather than the start of a trend.
- Combined turnover of both markets is the overall arbiter line: 8/4 was RMB 2.2136 trillion. Today ≥RMB 2.4 trillion = incremental confirmation (bullish); falling below RMB 2.0 trillion while the index stays green = a low-volume snapback (bearish).
- Ladder catch-up: on 8/4 there were zero consecutive limit-ups within the main line. If the components/communications equipment sectors can produce 2 or more second-day limit-ups today (excluding ST and micro-caps), a relay ladder is starting to form; if there is still no second board, the "one-day catch-up" characterisation holds.
- Break rate: 8/4 was 9.8% (the best in three days). If it rebounds above 25% today, then 9.8% was an outlier.
8.3 Single-stock signals — today the key is volume, not price
Because the leaders' volume ratio on 8/4 was only about 1.0 (see item 1 of 2.5.2), "does volume expand" is more decisive today than "does the price rise". The three observation points below are, in this report's view, the most decisive:
| Observation point | Threshold | Who it proves right |
|---|---|---|
| 中际旭创 (Innolight, 300308) turnover before 10:00 | >RMB 20 billion (i.e. a full-day volume ratio potentially >1.5) | Bullish: incremental money is entering and the "volume ratio 1.0" bear argument is disproven |
| >RMB 20 billion but the price falls back from its high into the red | Bearish (the strongest bear signal): volume up, price stalled = distribution at a high level | |
| <RMB 12 billion while the price holds above +8% | Neutral-to-bullish (rising on shrinking volume = reluctance to sell), but needs further intraday verification | |
| 胜宏科技 (Victory Giant, 300476, ±20%) call auction | gap-up >8% | Bullish: the unconstrained PCB reading is revised up from 6.6%, proving those 8 main-board limit-ups on 8/4 were not hollow seals |
| flat or lower open while Shengyi/WUS go one-word limit | Bearish: the institutional illusion is confirmed — the ±10% limit-ups were sealed rather than earned, and real demand is not that strong | |
| 中微公司 (AMEC, 688012), 沪硅产业 (NSIG, 688126), 南大光电 (Nata Opto-electronic, 300346) call auction | gap-up >5% | Bullish: the third leg catches up and the main line widens from two legs to three |
| still flat/lower open | Bearish: the main line lacks breadth and this is just a bounce in two niches |
- Whether 药明康德 (WuXi AppTec, 603259), as a leader that has already delivered, can post a second limit-up today determines whether CXO is a "one-day delivery" or a "new main line".
- If 天孚通信 (T&S Communications, 300394) leads the whole market again (the most expensive P/E ≈ 99x and the deepest-fallen name being the strongest), that is actually a bearish signal — betting on beta rather than fundamentals is a late-stage sentiment characteristic.
8.4 Risk signals (downgrade on trigger)
- Gap-up then dive: AI hardware gapping up 5%+ and turning red within half an hour — the record money of 8/4 immediately becomes distribution supply.
- The SSE 50 keeps falling while ChiNext spikes and fades: on 8/4 the SSE 50 was −0.29% and banks −2.69% (0 up / 42 down), showing this is a rotation of existing money, not incremental inflows. If heavyweights keep selling off today and growth stocks cannot pick up the baton, a vacuum will open at the index level.
- A lone limit-up: if only 1–2 optical-module names stay sealed and PCB does not follow, the main line is disintegrating.
- Yesterday's strong names ebbing: if 传智教育 (Chuanzhi Education, 003032, main board, 7 boards) and 神雾节能 (Shenwu Energy Saving, 000820, main board, 4 boards) break their seals at the open, market-wide sentiment will be suppressed.
9. Final recommendations
① The 5 names most worth watching today
| Rank | Stock | Board | Branch | Reason for recommendation | Biggest risk | Verification point today |
|---|---|---|---|---|---|---|
| 1 | 中际旭创 (Innolight, 300308) | ChiNext ±20% | Optical modules/CPO | The overnight independent repricing of optical-communications stocks — Fabrinet +16.47% / Coherent +12.35% / Lumentum +8.92% — is a more precise read-across than the Nasdaq; Q1 single-quarter net profit attributable to parent RMB 5.735 billion (+262.28%); only −8.91% over 20 sessions and −27.9% from the high, the most intact trend among peers; a P/E of 79.97 is not outrageous for optical modules | The 8/4 volume ratio was only 1.05 — up 13.24% under free trading with a ±20% band yet with almost no volume expansion, so that RMB 5.068 billion of net main-force inflow is more likely a change in the large-order share within existing holdings than new money; its single-stock turnover is already 2.25% of the whole market, so crowding is high | Whether turnover before 10:00 exceeds RMB 20 billion (see 8.3); rising on volume = bullish, stalling on volume = distribution |
| 2 | 沪电股份 (WUS Printed Circuit, 002463) | SSE/SZSE main board ±10% | PCB | 8/4 limit-up + net main-force inflow of RMB 1.006 billion; a P/E of 50.00 is on the low side among PCB leaders; the components sector was 63 up / 0 down, the strongest in the market | Disagreement is inevitable the day after a limit-up; −13.84% over 20 sessions shows the trend is still repairing | Whether it seals quickly and whether the seal order holds |
| 3 | 生益科技 (Shengyi Technology, 600183) | SSE/SZSE main board ±10% | Copper-clad laminate | Global CCL leader, limit-up + net main-force inflow of RMB 1.157 billion; still −25.56% over 20 sessions, the largest expectation gap | Heavily an oversold-bounce profile, trend not confirmed | Whether it posts a second limit-up; if it merely gaps up and fades, characterise it as a bounce |
| 4 | 康龙化成 (Pharmaron, 300759) | ChiNext ±20% | CXO | The only main-line name in the whole ranking in a clear uptrend (+30.59% over 20 sessions); H1 pre-announced net profit +34%~45%; a P/E of 43.30 is relatively reasonable | The catalyst comes from WuXi (stale news), not itself; it has already risen for several sessions | Whether the CXO sector can strengthen independently of WuXi |
| 5 | 兆易创新 (GigaDevice, 603986) | SSE/SZSE main board ±10% | Memory | CXMT entering PC majors' supply chains is genuinely new news inside the time window; net main-force inflow RMB 1.595 billion; −42.58% over 20 sessions, expectations extremely low | Memory stocks are extremely volatile; CXMT volumes are currently "very limited", do not over-extrapolate | Whether the memory sector forms a collective move rather than a single-point anomaly |
② The 3 strongest branches today
| Rank | Branch | Core catalyst | Persistence | Representative stocks |
|---|---|---|---|---|
| 1 | AI compute hardware · PCB/copper-clad laminate | Components sector +7.07%, 63 up / 0 down, 15 limit-ups, net inflow RMB 6.507 billion | Medium term, but short term already at a disagreement point | 沪电股份 (WUS Printed Circuit, 002463), 生益科技 (Shengyi Technology, 600183), 深南电路 (Shennan Circuits, 002916), 鹏鼎控股 (Avary Holding, 002938) |
| 2 | AI compute hardware · optical modules/CPO | Overnight Nasdaq +2.59%, Nvidia +3.25%; communications equipment net inflow RMB 16.114 billion | Medium term | 中际旭创 (Innolight, 300308), 新易盛 (Eoptolink, 300502), 天孚通信 (T&S Communications, 300394) |
| 3 | CXO/innovative drugs | WuXi raised guidance, backlog RMB 66.4 billion; medical services +5.54% | The healthiest trend of the three (the only one positive over 20 sessions) | 康龙化成 (Pharmaron, 300759), 凯莱英 (Asymchem, 002821), 昭衍新药 (JOINN Laboratories, 603127) |
③ Directions not worth chasing today
| Direction | Reason |
|---|---|
| Power grid equipment/UHV | The "15th Five-Year Plan for a New-Type Power System" (8/3) was disproven by the market yesterday, and the sector went nowhere on 8/4. The same document should not be pushed two days running. |
| Nuclear power | The 7/31 State Council approval is already on its 3rd trading day, leaders 中国核电 (CNNP) −1.11% and 中国广核 (CGN Power) −2.16% have weakened, and only a hot-money 2-board ladder is left. |
| 中微公司 (AMEC, 688012) and other "high-growth" pre-announcement stocks | The +310% headline contains RMB 1.982 billion of non-recurring items, with ex-non-recurring only +85.61%~+122.73%; the market has already voted with "only +2.55% plus net main-force outflow of RMB 241 million". |
| 蜂助手 (Fengzhushou, 301382) and other big-compute-order names | The RMB 7.670 billion contract corresponds to average annual net profit of only RMB 60–72 million (implied net margin 6.5%–7.8%, the same band as its thin-margin distribution core business); the RMB 3.062 billion procurement agreement still needs shareholders' meeting approval to take effect; cash on the books is only RMB 116.7 million; operating cash flow has been negative for 4.5 consecutive years; the company itself says that in an extreme case there would be "a material adverse effect on its ability to continue as a going concern". The single-day market-cap gain on 8/4 already equals 4.4–5.2x the project's total five-year net profit. |
| 协创数据 (Xiechuang Data, 300857) | "RMB 7 billion of own funds for wealth management" conflicts with the balance sheet — only RMB 2.908 billion of cash on the books, and 39 days ago it announced an RMB 8 billion placement of which RMB 1.5 billion is for "working capital and bank loan repayment"; interest-bearing debt of RMB 25.890 billion = 5.0x net assets; P/B of 22.7x versus only 2.1–5.1x for IDC peers with the same model. |
| 有研新材 (Grirem Advanced Materials, 600206) and other "high-growth" interim-report names | Behind the +40.89% headline, ex-non-recurring is only +16.98%, with the bulk of the revenue increment from platinum-group trading business at a 1.63% gross margin; 2026H1 operating cash flow was −RMB 950 million. When reading an interim report, always look at ex-non-recurring profit and cash flow first. |
| Banks/insurers and other heavyweights | On 8/4 banks were −2.69% (0 up / 42 down, net outflow RMB 8.045 billion) and insurers −2.46% — they are on the sell side of the high-to-low rotation. |
| The 9 delisting-risk warning stocks | Avoid absolutely. |
④ Final one-sentence judgment
Today is a "the overnight session gave the reason, but the August 4 rally had no incremental money behind it" gap-up disagreement day — the bulls' hardest evidence is that earnings have already landed (Shengyi's half-year profit ≈ last year's full year; overnight, Fabrinet/Coherent/Lumentum surged 8%~16% on their own), and the bears' hardest evidence is a volume ratio ≈ 1.0 (Innolight and Eoptolink traded freely under a ±20% band and rose 13%, yet turnover barely exceeded the prior five-day average). Both hold, so today the key is not choosing a direction but watching volume: the main line's arbiter is the first 30 minutes — whether Innolight's turnover before 10:00 can break RMB 20 billion, and whether 胜宏科技 (Victory Giant), the only PCB name not constrained by ±10%, can gap up more than 8%. Rising on volume means 8/4 was the start of a valuation-pit repair; stalling on volume means distribution at a high level; shrinking volume means it was merely a rotation of existing money with no new cash.
The biggest incremental value of this report today lies not in which stock it picked but in two things: first, correcting six stock codes that news aggregators got wrong (copying them would mean buying the wrong stock); second, removing nine pieces of stale news that were mixed into "August 4 blockbuster news" from today's catalyst list — including the very power plan that yesterday's pre-market bet wrongly on and that could very easily be bet on again today.
⚠️ Risk warning: this list is a pre-market information review and watchlist only and does not constitute investment advice. A-share volatility risk is extremely high, and automatically generated content may contain stale information or errors in industry-chain read-across, so it must not be used directly as a basis for trading.
Sources21
Every external link cited in the body, numbered in order of appearance. · 16 domains
- 1linkfinance.sina.com.cn
- 2linktrendforce.com
- 3linkfinance.sina.com.cn
- 4linkfinance.sina.com.cn
- 5linknbd.com.cn
- 6linkfinance.eastmoney.com
- 7linkm.10jqka.com.cn
- 8linkithome.com
- 9linkm.sohu.com
- 10linkfinance.sina.cn
- 11linksina.cn
- 12Shanghai Securities Newspaper.cnstock.com
- 13Securities Timesstcn.com
- 1421jingjim.21jingji.com
- 1521jingjim.21jingji.com
- 16The Paperthepaper.cn
- 17East Moneycaifuhao.eastmoney.com
- 18Ifeng Techtech.ifeng.com
- 19National Business Dailynbd.com.cn
- 20Securities Timesstcn.com
- 21Shenzhen Stock Exchange originalPDFdisc.static.szse.cn