Microsoft faces shareholder fraud lawsuit over alleged concealment of Azure cloud slowdown while ramping up AI spending, but stock gained 2.3% despite the legal challenge.

What happened: A Michigan pension fund filed a class-action lawsuit in Seattle federal court on June 12, 2026, accusing Microsoft and executives including CEO Satya Nadella and CFO Amy Hood of hiding a deceleration in Azure cloud growth while promoting heavy AI investments. The lawsuit follows Microsoft's January 2026 earnings report, which revealed Azure growth slowed to 39% from 40% the prior quarter, with further cooling to 37% or 38% projected. Microsoft also disclosed quarterly capital expenditure had swelled to $37.5 billion（約6兆円）—a 66% spike year-over-year that outpaced Wall Street's projection of $34.3 billion（約5.5兆円）.

Why it matters: Investors appear concerned that Microsoft diverted computing resources (CPUs and GPUs) away from its core cloud business to feed AI research, creating a mismatch between the company's public AI optimism and underlying infrastructure strain. The January stock drop wiped out roughly $357 billion（約57兆円） in market value in Microsoft's largest single-day decline in nearly six years, triggering the legal action. However, 53 out of 56 analysts still rate the stock 'buy' with an average 12-month price target of $561.4 per share.

What to watch: Despite the lawsuit filing, MSFT stock gained about 2.3% in Monday afternoon trading and has lost about 17.5% year-to-date. The company also faces a $2.8-billion mass-action lawsuit from nearly 60,000 British enterprises over alleged anti-competitive behavior with Windows Server pricing.