U.S. stock indexes are feeling pressure from better-than-expected reports on the job market and business activity.

Jensen Huang is the CEO of Nvidia ( NVDA 3.70%), a company whose chips power the vast majority of artificial intelligence (AI) systems. At a technology conference last year, Huang made a bold declaration: "The next wave of AI is here. Robotics, powered by physical AI, will revolutionize industries."

Uber drove 3.9% higher after the ride-hailing app said it would accelerate $1.5 billion in purchases of its own stock, part of a previously announced $7 billion buyback program. Uber’s chief financial officer, Prashanth Mahendra-Rajah, said it’s making the move because its stock price looks cheap compared with the strength of its business.

Asian stocks are mixed after Wall Street snapped out of a spell of holiday season blues, with markets in Tokyo and China declining.

Asian Shares Mostly Rise After Wall Street Rally Led by Nvidia TOKYO (AP) — Asian shares mostly rose Tuesday, deriving optimism from rising technology stocks on Wall Street, led by Nvidia. Japan's benchmark Nikkei 225 jumped 2.

Good news for the U.S. economy is back to being bad for Wall Street as the S&P 500, Dow Jones industrial average and Nasdaq all post losses.