DeepSeek's claims that it cost mere millions to build fanned fears that the huge investments into AI by U.S. firms are unwarranted and a bubble waiting to pop.

Not all big technology stocks got hit in the rout, however. Apple Inc., which gained 3.3% today, has overtaken Nvidia as the top company by market value. Meta Platforms Inc. also ended the day higher,

Nvidia’s stock is off to a positive start after a wild Monday. Shares of the chipmaking giant were recently up about 2%, easily outpacing the slight rise in the S&P 500. The first hours of Tuesday’s session followed a start to the week that marked Nvidia’s (NVDA) worst day in years,