Following a record-breaking trading volume and a staggering near-300% surge in its share price this year, the memory chip giant GigaDevice Semiconductor Inc. (SHA: 603986), with a market capitalization of 589.5 billion yuan, proactively issued a warning late at night to "cool down" market fervor, highlighting dual concerns over high-cycle volatility and overheated capital flows.
On the evening of Monday, June 29th, GigaDevice released a stock trading risk announcement, explicitly stating that the sharp upward price trend in the niche memory market it operates in is unsustainable. The announcement directly pointed out that current high prices have already begun to suppress downstream demand. With subsequent marginal increases in production capacity, product prices are expected to face a considerable decline.
This warning comes at a peak in market sentiment for the company's stock. On that day, GigaDevice's trading volume reached a staggering 43.15 billion yuan, ranking first on the A-share market. It was also included for the first time as a significant holding in the globally popular memory-focused ETF. Against the backdrop of accelerating passive fund inflows and industry capital hinting at a cyclical peak, market competition is intensifying.
For investors, this is not merely a routine compliance disclosure but a substantive signal of fundamental logic correcting the extreme sentiment-driven premium in the current semiconductor sector. Short-term trading risks can no longer be ignored.
Niche Memory Supply-Demand Reversal Sounds Alarm at Cycle Peak
In its announcement, GigaDevice provided a detailed breakdown of the structural contradictions in the current memory market. The company noted that the memory chip industry exhibits significant cyclical fluctuations, and current product prices are at historical highs, with supply and demand ultimately moving towards rebalancing. Unlike the mainstream memory market driven by strong AI demand, GigaDevice's primary niche memory products are mainly used in fragmented sectors such as consumer electronics, industrial applications, networking, and automotive, where total downstream demand is relatively stable.
The current price increase in niche memory is primarily due to international manufacturers shifting their production focus towards AI-related mainstream memory, indirectly benefiting the niche market from supply tightness. However, during this rapid price ascent, downstream demand has already been substantively suppressed. The company clearly warned that with marginal increases in niche memory production capacity, prices will experience a significant decline. Furthermore, as a fabless company, it also faces supply chain risks from potential further tightening of capacity supply from its upstream partner foundries amid overall supply shortages.
Global Passive Funds Enter, ETF Heavyweighting Amplifies Volatility
While fundamental concerns emerge, fervor on the capital side continues to push stock prices higher. On June 27th, the U.S.-based Roundhill Memory ETF (DRAM)—a scarce pure-play actively managed memory ETF in the market—released its latest holdings, including GigaDevice for the first time with a weight of 2.91%, making it the 8th largest holding. This marks the first time this ETF, launched in April, has included an A-share memory stock and is the only A-share memory chip company in its portfolio, signifying substantial recognition of China's memory industry chain by global passive funds.
Domestic mutual fund concentration is similarly high. Data shows that GigaDevice is the top-weighted stock in the SZSE Semiconductor Chip Index, with a weighting exceeding 10%. The four ETFs tracking this index have a total scale of 47.191 billion yuan. Concurrently, it is the second-largest weighted stock in the CSI Chip Industry Index, with a weighting over 8%, linked to ETFs with a scale nearing 10 billion yuan. Such high index weightings mean that once sector sentiment recedes or ETFs face net redemptions, the mechanical rebalancing by passive funds will significantly amplify downward volatility for individual stocks.
Sentiment Premium Needs Digestion, Short-Term Trading Risks Highlighted
Looking at trading data, GigaDevice's short-term gains have severely deviated from conventional valuation ranges. On June 29th, its A-shares closed up 9.09%, nearing the daily limit, at 840 yuan, with a cumulative year-to-date increase of 292.64%. Its Hong Kong-listed shares performed even more aggressively, surging 667.50% year-to-date. Recently, the company's trading volume has remained above 37 billion yuan for multiple consecutive trading days, with a single-day record of 43.15 billion yuan hitting an all-time high since its listing and ranking first in the A-share market.
Under the combined pressure of an expected reversal in industry supply-demand dynamics and extreme short-term capital crowding, the overall valuation of the semiconductor sector faces severe digestion pressure. The late-night warning from industry capital essentially serves as a rational cooling of the current overheated trading sentiment. Investors need to closely monitor subsequent adjustments in institutional fund positions and the actual price trends of niche memory, remaining vigilant against the risk of a rapid correction as the short-term sentiment premium recedes and returning to rational investment logic.
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