Microsoft shares rose by approximately 37% between late June and late September 2026, climbing from $372 to $509. This performance marks the company's strongest quarterly growth since 1998.

The company reported fiscal fourth-quarter 2026 revenue of $90 billion, an 18% year-over-year increase. Net income reached $35.8 billion, representing a 31% rise under GAAP standards.

Azure revenue grew by 43% year-over-year, surpassing the $100 billion annual milestone. The broader cloud business, including Office 365 and Dynamics, generated $59.3 billion in revenue, up 27%.

On July 30, Microsoft stock gained 15% to 16%, adding $450 billion to its market capitalization in one day. This represents the largest single-day market cap increase in US history.

Microsoft 365 Copilot has exceeded 30 million paid seats. The company maintains an annual capital expenditure guidance of $175 billion for data centers and AI compute, forecasting 45% growth for Azure in the next quarter.