Microsoft shares closed at $516.17 on September 25, 2026, surging 3.66% on elevated volume amid an expanded Copilot AI release and broader tech gains despite higher Treasury yields. The move built on fiscal 2026 results showing 18% revenue growth to $331.8 billion, with Azure up 43% in the final quarter and Microsoft Cloud revenue reaching $214 billion. Operating margins held near 45% even as calendar 2026 capex guidance eased to roughly $175 billion after an accounting shift on data-center lives. With no major earnings or policy events scheduled before the week of September 28, trader focus centers on sustained AI demand, commercial cloud momentum, and any shifts in risk appetite that could influence the share price around current levels near $516–518.