U.S. stock index futures moved higher, with Nasdaq 100 futures up 0.81% ahead of the opening bell, led by semiconductor shares. Micron Technology rose in U.S. premarket trading, with an earlier MSX.COM reading showing a 4.33% gain to 934 dollars and a later Odaily and MSX.COM update saying the stock climbed as much as 9.9% to $984.95, lifting its reported market capitalization to $1.1 trillion. The newer market report also said Micron was extending momentum after a prior 19% gain. Taiwan Semiconductor Manufacturing Co. (chipmaker TSMC) rose more than 5% amid reports that prices for its 3-nanometer process technology may increase by 15% in the second half of the year and by 10% next year, highlighting investor focus on semiconductor pricing power and technology-sector momentum.