Summary of Key Points
Hengshang Energy Saving (a construction and decoration company with a struggling main business) caused its stock price to soar by 200% over 12 days, with 11 consecutive daily limit-ups, by announcing a cross-sector merger and acquisition of a company with a "semiconductor concept" (which turned out to be a storage module processing enterprise). However, due to exposed doubts about the acquisition and regulatory inquiries, the stock price subsequently experienced consecutive daily limit-downs, trapping retail investors who bought in at high prices. The entire process revealed signs of opportunistic investment, insider trading, and profit transfer, essentially a capital game designed to manipulate the market and exploit retail investors.
I. The Stock Price Rollercoaster: From "11 Limit-Up Days" to Consecutive Daily Limit-Downs
Hengshang Energy Saving was originally an underperforming stock in the construction and decoration sector, with continuous losses: its revenue decreased by 33% in 2025, resulting in a loss of 35 million yuan, and another 42% decline in the first quarter of 2026. On June 15, its stock price soared to a limit-up, and that same night, the company announced a merger with a "semiconductor-related" company. After the market was closed for trading, it resumed on July 1 and entered a streak of 11 consecutive daily limit-ups, with the stock price rising from 11.2 yuan to 35.61 yuan, more than doubling in value.
However, the good times were short-lived. On July 16, the stock price began a series of consecutive daily limit-downs, falling to 28.85 yuan, with the volume of trades increasing (from 110,000 lots to 150,000 lots), making it extremely difficult for buyers at high prices to sell their shares. The turning point of this dramatic fluctuation came when the true nature of the acquired company was revealed, and regulatory authorities began to investigate.
II. The "Semiconductor" Illusion of the Acquired Company: A Hype-Driven Concept
The company Hengshang Energy Saving intended to acquire, Jingsheng Electronics, was promoted as a "semiconductor cross-sector" player, but in reality, it was a "pseudo-semiconductor" enterprise:
- Business Nature: It does not manufacture chips but purchases ready-made storage chips and performs downstream processing such as testing and packaging (functioning more like an assembly plant), with low R&D investment and no high entry barriers.
- Performance Issues: Although its net profit nearly doubled in 2025, the base figure was small (only 41.87 million yuan), and its revenue mainly came from consumer-grade storage products in a highly competitive market.
- Financial Risks: It had a high debt-to-asset ratio of 81% and was heavily in debt, indicating a precarious financial situation.
In essence, Jingsheng Electronics was merely used as a guise to tap into the semiconductor trend and drive up the stock price.
III. Doubts about Capital Operations: Opportunistic Capital Injections and Insider Trading
Several suspicious capital activities were involved in this speculation:
1. Opportunistic Capital Injection for Quick Profit: On May 27, 2026, institutions such as Qingdao Dingliang invested 121 million yuan in Jingsheng Electronics, valuing the company at 521 million yuan after the investment. The next day, Hengshang Energy Saving began negotiations for the acquisition, and by the 20th, they proposed an acquisition price of 600 million yuan—this meant the institutions would immediately realize a 54% profit on their investment without waiting for any performance improvements.
2. Insider Trading Suspicions: Before the market closure, Jingfu and a private equity fund became the eighth-largest shareholders, which was unusual since they were not listed in the first-quarter report. Their entry coincided with the restructuring announcement and the stock price surge, making it highly unlikely to be a coincidence.
3. Low-Price Share Issuance for Profit Transfer: The shares acquired through the merger were issued at 10.18 yuan per share, only one-third of the peak stock price. Institutions bought shares at a discount, while retail investors bought in at high prices, indicating a clear profit transfer.
IV. The Tragedy of Retail Investors
The consecutive daily limit-ups attracted many retail investors, who believed they would miss out on the opportunity and rushed to buy in. However, during these limit-up periods, institutional investors were quietly selling their shares. When the speculation faded and the stock price plummeted, retail investors found it impossible to sell their shares. This was akin to a "pass-the-parade" game, with the final blow falling on retail investors.
V. Regulatory Warnings
The Shanghai Stock Exchange had been monitoring the situation and issued an inquiry letter on July 6, raising three key questions: Is the acquired company truly a semiconductor firm? Does the cross-sector merger bring any synergies? Are there any signs of insider trading?
Hengshang Energy Saving's response acknowledged the risks, including the poor quality of the acquired company's earnings, the lack of performance compensation for retail investors (who would bear all losses if the company suffered losses), and even hinted at possible insider trading.
This case is not isolated. Many companies in the A-share market with weak main businesses use popular sectors (such as semiconductors or AI) to conduct mergers and acquisitions, leveraging capital operations to boost stock prices, with retail investors often bearing the consequences.
Advice for Ordinary Investors
When encountering a situation where an underperforming stock suddenly surges due to a trendy cross-sector theme, be cautious: first, verify whether the acquired company has real value; then, check for signs of opportunistic investment and insider trading. Don't let the consecutive daily limit-ups cloud your judgment, as you may end up becoming the one who suffers the losses.
In essence, this is a closed-loop capital speculation strategy centered around trendy themes: listed companies capitalize on hot topics, institutions make early investments, retail investors buy in at high prices, and then the stock price plummets, resulting in significant losses for ordinary investors. (Produced by "Zhengjing Society")