U.S. stock indexes slipped Wednesday after the Federal Reserve opted not to cut interest rates for the first time since it began trying to help the economy through easier rates in September. The S&P 500 fell 0.

U.S. stocks mostly sold off Monday, amid fears China’s AI company DeepSeek could disrupt profits for Big Tech stocks.

Chinese artificial intelligence company DeepSeek shocked Wall Street and Silicon Valley with its ChatGPT-like AI model called R1. Clare Duffy talks to D.A. Davidson’s Gil Luria about how DeepSeek compares to ChatGPT and why it represents a monumental shift for the AI industry.