Microsoft shares rose 16% on Thursday, July 30, 2026, their largest single-day gain since October 2008, adding roughly $450 billion to the company's market capitalization. According to data compiled by Bloomberg, that is the biggest one-day increase in value by any stock, surpassing Nvidia's $440 billion gain that followed President Donald Trump's announcement of a 90-day tariff pause the previous year. The move came a day after Microsoft reported quarterly cloud revenue that beat estimates and disclosed more than $130 billion in new data center leases.
- bloomberg.com2026-07-30