Stocks fall as OpenAI training halt stokes AI demand fears; bond selloff adds pressure

U.S. stocks ended lower Monday as OpenAI's training halt intensified concerns about the artificial intelligence trade, while a continued bond market selloff pressured equities. The decline was driven by fears that slowing AI development could reduce demand for related infrastructure, compounding investor anxiety over rising yields and growing expectations of Federal Reserve rate hikes. The market moves follow a week of volatility, with gold falling 4% below $4,200 and Asian chip stocks sliding, as firmer dollar and bond yields weighed on risk assets.