Microsoft Shareholders File Class Action Lawsuit Over Stock Slump

The legal action follows a brutal market correction on January 29, when Microsoft shares plummeted 10 percent, wiping out $357 billion in market value. This marked the company's sharpest single-day decline in nearly six years. Investors claim Microsoft failed to provide timely transparency regarding the financial strain caused by diverting resources toward AI research and its Copilot chatbot, an initiative competing directly with Google’s Gemini and OpenAI’s ChatGPT.

For the fiscal quarter ending in December, Microsoft reported 39 percent revenue growth in its cloud division. While this met analyst expectations, it represented a deceleration from the 40 percent growth recorded in the previous quarter. The lawsuit, naming CEO Satya Nadella and CFO Amy Hood as defendants, argues that the company’s capital expenditures—which surged 66 percent to $37.5 billion—far exceeded the $34.3 billion analysts had anticipated. The City of St. Clair Shores Police and Fire Retirement System, representing the plaintiffs, contends these mounting costs were inadequately disclosed throughout the class period spanning May 1, 2025, to January 28, 2026.