Stock Market Today, Sept. 25: Microsoft Stock Jumps 4% After Revamping Copilot With Code Generation and Agentic AI Tools

Microsoft stock rose 3.66% to $516.17 after announcing new Copilot capabilities including code generation and agentic AI tools. The company is spending over $115 billion on capex for data centers and AI infrastructure in 2026. While the market reacted positively, investors should monitor AI adoption rates and ROI on these massive investments in the coming quarters.