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,

Key Takeaways Nvidia shares tumbled Wednesday, dashing hopes for a quick recovery from losses earlier in the week amid concerns about competitiveness of American AI firms and their spending on artificial intelligence.

Chip stocks in the U.S. and Europe rose on Wednesday for a second straight day, recovering from a punishing selloff triggered by China's low-cost DeepSeek artificial intelligence tool at the start of the week.