The complaint, filed Friday in a Seattle federal court, argues that Microsoft artificially inflated its stock price by portraying Azure as a reliable growth engine while concealing the financial strain caused by massive AI investments. The plaintiffs, led by the City of St. Clair Shores Police and Fire Retirement System, contend that executives knew or recklessly disregarded the inaccuracy of their public statements during earnings reports and shareholder meetings between May 2025 and January 2026.

Investor optimism shifted on January 28, 2026, when the company revealed fiscal second-quarter results showing Azure revenue growth had cooled to 39%. This deceleration, coupled with a sharp increase in capital spending, triggered a decline in the company’s stock price. The lawsuit alleges that these financial realities were obscured by management throughout the preceding months. Microsoft has yet to provide a formal response to these allegations.