U.S. stock index futures rose on Thursday, boosted by a strong quarterly update from TSMC that reinforced investor optimism around AI and extended a rally in chip stocks. TSMC, the world's biggest producer of advanced chips, raised its full-year revenue forecast on a bullish outlook for spending on artificial intelligence. U.S.-listed shares of the company, which also posted a better-than-expected record quarterly profit, rose 2% premarket.

Shares of some major U.S. chipmakers also advanced, building on gains from Wednesday when ASML's solid quarterly results and a $40 billion data center deal by BlackRock and a Nvidia-backed group fueled optimism around AI. Nvidia rose 1.3%, Micron Technology added 3.7% and Broadcom gained 1.7%.

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