On October 13, 2025, Microsoft and the London Stock Exchange Group (LSEG) announced a significant expansion of their strategic partnership to integrate LSEG's financial data with Microsoft 365 Copilot and Copilot Studio, enabling advanced AI-driven workflows for financial professionals—a move that underscores Microsoft's leadership in enterprise AI[1]. Separately, Microsoft reaffirmed that support for Windows 10 will end on October 14, 2025, a widely covered transition affecting millions of users and prompting calls from repair advocates for extended support[2][5]. Despite these major developments, MSFT shares closed at $514.05 on October 13, up 0.60%, with no evidence of outsized volatility, suggesting the news was well-anticipated or broadly in line with market expectations.