Shares of memory chipmakers are sliding again Thursday morning as fresh worries about Chinese competition ripple through the sector. Micron Technology (NASDAQ:MU | MU Price Prediction) stock is down 5% to $862, while SK Hynix‘s (NASDAQ:SKHY) U.S. ADR is off 7% to $164 in early trading.
SanDisk (NASDAQ:SNDK) shares are also down 7% to $1,505, and Western Digital (NASDAQ:WDC) shares have fallen 7% to $476. The move extends Wednesday’s rout, when the same group dropped 6% to 8%.
That two-day slide follows one of the most explosive runs in recent semiconductor memory. Heading into today, Micron stock was up 217% year to date (YTD), SanDisk shares were up 580% YTD, and Western Digital stock was up 199% YTD.
CXMT’s $8.6 Billion IPO Rattles the Memory Trade
The catalyst is a China story. Reportedly, ChangXin Memory Technologies (CXMT), China’s leading DRAM maker and the world’s fourth largest, is set to IPO on Shanghai’s STAR Market on July 27, aiming to raise at least $8.6 billion in Asia’s largest share sale so far this year.
A well-funded domestic DRAM champion expanding capacity is stoking fears of intensifying Chinese memory competition and potential oversupply. That threat lands most directly on the DRAM leaders, which is why Micron and SK Hynix are taking the hardest hits.
So far, this remains a competition and sentiment fear with no confirmed hit yet to any company’s actual results. Per Counterpoint Research, SK Hynix leads the industry with 29% DRAM share and 58% high-bandwidth memory (HBM) share, sitting just ahead of Micron. Industry sources still see the memory shortage lasting beyond 2030.
Peers Follow the Move, ETF Sinks
The sector proxy is confirming the damage. The Roundhill Memory ETF (NYSEARCA:DRAM) is down 7% to $53.66, with SK Hynix (weighting 24%) and Micron (24%) driving much of the pain in the fund.
The DRAM ETF is a narrow, volatile thematic fund with real concentration risk in its top holdings, and the ETF isn’t leveraged. Investors sizing their exposure through the fund are getting concentrated results in both directions.
SK Hynix’s ADR carries added ADR-premium risk after only recently beginning to trade on Nasdaq exchange. The listing has already swung from a large surge to sharp drops this week, so SK Hynix stock can move well outside normal single-name ranges intraday.
Secondary drivers today include broad Asian-market volatility, cooling-AI-momentum jitters, and clear profit-taking after parabolic runs. Whether this is a healthy correction or the start of an AI-driven memory bubble bursting is a genuine, polarized debate right now.
Bull vs. Bear on Micron
The bull case for Micron is intact on the fundamentals. Micron just reported Q3 FY2026 revenue of $41.5 billion, up 346% year over year (YoY), with GAAP gross margin of 85%, and guided Q4 FY2026 revenue to $50 billion at the midpoint.
CEO Sanjay Mehrotra stated that Micron’s results “reflect the strategic value of memory in the AI era.” On the other hand, the bear case leans on the CXMT threat, memory-industry cyclicality, and rich valuations after enormous gains.
Polymarket traders now put Micron stock in the $840 to $870 range by Friday’s close, with a 63% probability of another down day today. Western Digital is less directly exposed to the DRAM and NAND fight after the SanDisk spinoff, yet Western Digital shares are being pulled down with the group.
What to Watch Next
CXMT’s July 27 IPO pricing and any updated color on Chinese memory capacity plans are the next real catalysts. Investors can watch for whether Micron stock holds above $860 into the close.
The Roundhill Memory ETF at $53 and change is a useful tape to track for whether today’s damage stabilizes or spreads to the rest of AI infrastructure. A second red close for the fund this week would suggest that the reset isn’t finished.
Given how violently these names are swinging in both directions, investors should consider keeping their position sizes modest on their memory exposure here. AI-driven memory demand remains real, but the price action is telling traders that valuation and Chinese-competition risks are back in play.
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