Technology stocks tumbled Tuesday as a sell-off in chipmakers erased billions in market value, triggered by disappointment over Samsung Electronics' quarterly results. The tech-heavy Nasdaq Composite led the decline, falling more than 1% in morning trading, while the S&P 500 and Dow Jones Industrial Average also turned negative, with chip stocks broadly lower.
Samsung reported a surge in second-quarter profit, driven by robust demand for memory chips used in artificial intelligence. The company's stock, however, slid as much as 3% after the earnings failed to meet the lofty expectations set by its 145% rally over the past year. Investors punished the South Korean giant for not delivering enough upside, signaling that the bar for AI-related companies has become extraordinarily high.
The sell-off rippled across the sector. Micron Technology fell over 4%, while Sandisk dropped sharply. The iShares PHLX Semiconductor Sector Index ETF (SOXX) declined roughly 2%, and shares of other AI heavyweights like Nvidia and AMD also retreated. The Nasdaq 100 gave back a chunk of Monday's gains, as the market reassessed valuations in the frothy AI trade.
Some analysts argue the pullback is a healthy correction after an extended rally, pointing to Samsung's record profit as evidence that fundamentals remain strong. Others caution that the 'Magnificent Seven' tech giants have lost their grip on markets, with that group up only 1.7% year-to-date versus the S&P 500's 10% gain, raising questions about whether AI enthusiasm has peaked.