2026‑05‑07 – A Wall‑Street‑Like Surge in A‑Shares, Yet HSSM Remains an Outlier
The Chinese market erupted on May 6th into a frenzy that resembled a technology‑driven bubble more than a disciplined valuation play. The 科创50 index spiked over nine percent mid‑day, the Shanghai Composite and Shenzhen Component each climbed more than two percent, and a staggering over 3,800 stocks logged gains, with more than a hundred touching the daily limit. The rally was driven almost entirely by CPU‑related chips and ancillary segments—companies such as 中国长城 (China Great Wall), 禾盛新材 (HSSM), 海光信息 (HaiGuang Information), and 寒武纪 (Cambrian) all benefited from a surge in speculative buying.
1. Why the CPU‑concepts Soared
AMD’s bullish outlook. In a May 5th earnings call, AMD projected that the server CPU market would double by 2030, citing an evolving 1:1 CPU‑GPU ratio and an expected 35 % annual growth. The news triggered a 4 % intraday rise in AMD shares and a 16 % jump after hours—an echo that rippled back into the A‑share market.
Sector‑wide momentum. The 算力芯片概念 (computing‑chip concept) saw dozens of constituents hit the upper price band. 中国长城 and 禾盛新材 posted 1‑day limit‑up gains, while 海光信息 closed at a record high. Investors’ appetite for any chip‑related name turned the sector into a “buy‑the‑moment” play.
Market‑wide contagion. The rally was not isolated to the technology sector; the 科创50 index, which is heavily weighted toward high‑tech and innovative firms, surged nearly 9 % mid‑day, pushing the broader market to record highs.
2. HSSM – A Case in Point of “Trend‑Only” Gains
HSSM (Suzhou Hesheng Special Material Co., Ltd.) is a materials‑sector company that manufactures polymer composites, polyethylene terephthalate composites, vinyl chloride monomer composites, and special‑coated metals. Its business does not overlap with semiconductor manufacturing, design, or processing. Even though it sits on the Shanghai Stock Exchange and shares a ticker with the CPU rally, its fundamentals tell a different story:
| Metric | Value |
|---|---|
| Market Cap | 20 170 million CNY |
| 52‑week high | 89.20 CNY |
| 52‑week low | 28.39 CNY |
| Close (Apr 29) | 81.28 CNY |
| P/E ratio | 130.79 |
An absurdly high price‑to‑earnings ratio of 130.79 signals that investors are willing to pay a premium for speculative gains rather than for sustainable earnings growth. HSSM’s stock price is hovering near its 52‑week high, suggesting that the current price is a bubble‑driven peak rather than a valuation justified by cash flow or earnings prospects.
3. Critical Analysis – Is the Rally Justified?
Sector misalignment. HSSM’s core products—polymer and composite materials—are essential for construction, transportation, and consumer goods, not for the high‑growth semiconductor ecosystem that is currently propelling the market. Its inclusion in the CPU rally is a coincidence driven by index composition or analyst coverage, not by fundamental synergy.
Unsustainable P/E. A P/E of 130 is more reminiscent of biotech or early‑stage tech firms that are yet to generate meaningful earnings, rather than a mature materials company with a proven track record. This suggests that the market is overvaluing HSSM based on momentum rather than fundamentals.
Limited upside potential. Even if the CPU sector continues to boom, HSSM’s business does not directly benefit from the rising demand for CPUs. Its revenue streams are largely insulated from the chip‑driven supply chain, rendering the recent price surge an unconnected reaction to the broader trend.
Risk of correction. When a market rally is fueled primarily by speculative buying—especially when it is sector‑agnostic—the probability of a sharp correction increases. Should investor sentiment shift from “buy the momentum” to “value the fundamentals,” HSSM could see a rapid price adjustment.
4. Bottom Line
While the A‑share market’s CPU‑driven rally on May 6th showcases the sheer power of speculative enthusiasm, it also highlights the dangers of “trend‑only” investing. HSSM, with its materials‑focused business and astronomically high valuation, is an outlier that risks being dragged down by a broader market correction. Investors should treat its recent gains with caution, recognizing that the price surge is more a product of market psychology than a reflection of intrinsic value.
