Memory and storage stocks are getting hammered again in Tuesday premarket trading. As of 7:15 a.m. ET, Micron Technology (NASDAQ:MU | MU Price Prediction) is down 6.7%, Seagate Technology (NASDAQ:STX) is down 7.2%, Western Digital (NASDAQ:WDC) is down 7.6%, and SanDisk (NASDAQ:SNDK) is down 7.3%. Nasdaq futures are down more than 1% heading into the open.
Three Catalysts Are Driving the Selloff
Overnight action in Asia set the tone. Memory heavyweights got destroyed: Samsung fell 13% in Korea, SK Hynix fell 15%, and NAND specialist Kioxia fell 18% in Japan. SK Hynix’s US ADR (Nasdaq: SKHY) is down 5.6% in sympathy.
Traders are pointing to three overlapping catalysts. First, reports that China is developing DUV (deep ultraviolet) lithography machines that could ship to customers this year have revived fears that a domestic Chinese semiconductor-equipment industry could flood global markets with capacity in the coming year. That is a direct threat to the memory pricing cycle that has powered these stocks.
Second, reports that NVIDIA is preparing up to $750 billion in partnerships and financing tied to OpenAI and SK Hynix are stoking “circular financing” anxieties inside the AI complex. If the same handful of players are funding each other’s demand, the durability of the memory upcycle looks less clean than the bulls have argued.
Third, Korea’s market is broadly unwinding after becoming overly leveraged during a massive run-up earlier this year. Because the Korean market is dominated by memory names, that unwind is pressuring memory and memory-adjacent stocks worldwide.
The AI Memory Trade Is Getting Repriced
Every one of these names has been a monster. Micron is up 215.6% year to date and 710% over one year, riding blowout earnings that included $41.5 billion in fiscal Q3 revenue and $25.11 non-GAAP EPS (per Micron’s SEC filing). Seagate is up 197% year to date, Western Digital 189%, and SanDisk an eye-watering 438%.
The unwind is already underway. Over the past month, Micron is down 20%, Western Digital is down 15.1%, and SanDisk has cratered 39%. SanDisk alone dropped 11% in Monday’s regular session before Tuesday’s premarket damage. The QQQ, by contrast, is only off 2% over the past week, which shows how concentrated the pain is in memory and storage.
What to Watch
These are live premarket numbers as of 7:15 a.m. ET and can move quickly by the open. Fundamentals here have not deteriorated. Micron’s Q4 revenue guide of $50.0 billion ± $1.0 billion and Seagate’s $5.00 ± $0.20 Q4 EPS guide still point higher. Investment bank Nomura released a report this weekend forecasting DRAM sales of $2 trillion by 2030. That’s up from $747 billion in 2026.
The question is how much pain is still ahead as the KOSPI continues to ‘unwind.’ Korea’s market is extremely concentrated on memory stocks and investors used significant leverage during the run-up. That led to massive gains in April and May, but the opposite is now playing out with leverage leading to forced selling across Korea’s market.
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