Nvidia stock tumbled when DeepSeek said it trained an impressive AI model at a fraction of what U.S. companies have paid, but many Wall Street analysts remain bullish. President Trump's plan to reduce the corporate tax rate to 15% would let Nvidia repurchase more stock,

Investors were feeling a little more relaxed on Tuesday, with stock futures rebounding after the rapid rise of Chinese artificial intelligence startup DeepSeek triggered a broad and deep selloff the previous session.