Earnings are due later from Nvidia, the chip maker that is riding the AI wave . Meanwhile investors are watching the drama unfolding at OpenAI , where hundreds of staff are threatening to quit—and contemplating the implications for Microsoft and others. “AI exuberance has been a dominant theme this year,” said Laura Cooper, a macro strategist at BlackRock. Some of this enthusiasm waned as borrowing costs surged earlier in the fall, she said. International benchmarks were subdued, with indexes in Hong Kong, Shanghai and Tokyo closing flat to slightly lower.

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Persons: —, ”, Laura Cooper, Dow industrials, BlackRock’s Cooper, Brent Organizations: Nvidia, Microsoft, BlackRock, ”, Nasdaq, Dow Locations: OpenAI, Treasurys, Hong Kong, Shanghai, Tokyo