Microsoft is scoring another month of solid gains so far, even after Wednesday's big sell-off spurred by the Federal Reserve's signal that it will likely make fewer reductions in interest rates in 2025. On Thursday, right after the Christmas holiday, Microsoft stock fell just 0.3% to 438.11, slightly more than the S&P 500's 0.1% dip. With three full trading days left in the year, Microsoft stock holds a 3.5% gain in December vs. a 0.2% rise by the S&P 500.