Western Digital stock dropped about 7.5% in pre-open trading as a swift selloff among South Korean memory-chip companies rippled into U.S. premarket trading and pulled the wider memory and storage sector down from recent record levels.
South Korea's benchmark KOSPI sank roughly 10% on Tuesday, reversing gains from recent highs as losses in major technology names depressed sentiment. Technology leaders bore the brunt of the decline, with SK Hynix and Samsung Electronics each falling more than 11%.
The selloff in Korean technology shares began after a South Korean policymaker suggested citizens should receive a "national dividend" financed by AI chip profits - a comment that the presidential office later clarified reflected the official's personal view. The official subsequently said the proposal referred to excess tax revenues rather than a new windfall tax.
In U.S. premarket trade, Seagate and Western Digital both slipped by more than 7% as the Asia-led derating swept across the sector. In addition to the regional market turmoil, Western Digital faced a company-specific headwind after Fox Advisors downgraded the stock from 'Outperform' to 'Equalweight' in the previous session.
Analyst coverage of Western Digital currently shows 21 buy ratings, 3 hold ratings and 1 sell rating. The company’s shares had climbed aggressively in the month before the selloff, rallying more than 54% over that period.
The broader move reflects a rapid unwinding of heavily concentrated AI and semiconductor trades that helped drive much of Asia's equity performance this year. South Korean stocks had been among the largest beneficiaries of the AI-driven appetite for advanced semiconductors used in AI servers and data centers, attracting substantial foreign investment into memory-chip makers.
U.S. memory stocks have increasingly moved in tandem with their South Korean counterparts through vehicles such as the Roundhill Memory ETF, heightening the chance that the recent near-parabolic advance in these names could reverse quickly - a risk that materialized in Tuesday's trading.
Regional markets opened weak after an overnight pullback on Wall Street, where technology shares also fell amid heavy profit-taking tied to investor concerns about the prospect of higher U.S. interest rates. Major tech names recorded sizable losses overnight, and market attention this week centers on an upcoming personal consumption expenditures (PCE) inflation reading for further clues on the U.S. economy.
In short, the convergence of an Asia-led sector derating, a fresh analyst downgrade, and pressure on the Nasdaq created a particularly unfavorable environment for Western Digital during premarket hours. The episode highlights how sensitive U.S. memory and storage companies have become to swings in Asian semiconductor markets and to concentrated positioning in AI-related trades.
Market context
The corrective move removed much of the froth built up during the sector's rally, delivering an abrupt pullback to names that had seen outsized gains in a compressed timeframe. Investors should note that the trigger in Korea - public remarks about redistributive measures tied to AI-chip profits - was publicly clarified and reframed as relating to excess tax receipts rather than a proposal for a new tax.
What to watch next
Traders and analysts will be monitoring whether the selloff in Korean technology shares stabilizes and how U.S. memory stocks respond once regular trading begins. Key drivers to watch include updates on analyst positioning, any follow-up commentary from Korean officials, and the upcoming U.S. inflation data that could influence broader risk appetite.