Stock Market Today: Tech Futures Plunge As Micron, Nvidia, Sandisk Dive

U.S. stock-index futures fell sharply Tuesday as a global sell-off in technology and memory-chip shares spread from Asia into U.S. premarket trading.

Nasdaq-100 futures were down about 2.6% to 3% in the latest morning coverage, while S&P 500 futures fell roughly 1.2% to 1.5% and Dow futures slipped about 0.4% to 0.5%. The move pointed to a weaker open for Wall Street, especially for the Nasdaq and semiconductor stocks.

Micron Technology, Nvidia and Sandisk were among the biggest names under pressure before the opening bell. Investors.com reported Micron down about 7.2% premarket, Sandisk down about 8.4% and Nvidia down about 2.8% to 3%.

The early U.S. weakness followed a sharp slide in Asian chip stocks. Coverage from Barron’s and MarketWatch said the sell-off hit South Korea’s KOSPI index and dragged major memory-chip makers lower, including SK Hynix and Samsung Electronics. Barron’s reported those companies fell more than 12%, while the KOSPI dropped about 10%.

AP also reported that chipmakers including Micron, Intel, Qualcomm, Sandisk and Seagate were among the stocks hit by the overnight tech weakness.

What is driving the move

The reported catalyst was a global rout in memory chips and other high-growth technology shares, first visible in Asia and then reflected in U.S. futures. Several reports pointed to broader concerns about stretched valuations and the durability of the AI trade, though no single official trigger was identified in the coverage reviewed.

That leaves traders focused on whether the weakness is a one-session reset or the start of a broader de-risking move in tech.

What traders are watching

The key test is the U.S. open. Traders will be watching whether the futures losses carry into cash trading, whether Micron, Nvidia and Sandisk stabilize, and whether the selling broadens beyond semiconductors into the wider market.

For now, the setup suggests another volatile session for the Nasdaq and the chip sector, with broader risk appetite also under pressure.