Microsoft’s stock has biggest one-day gain since 2008, adding $480 billion in market value as cloud business booms - finance.yahoo.com
Microsoft stock experienced its largest single-day gain since 2008, adding $480 billion in market value following strong fiscal year-end results. The surge was driven by investor confidence in the company's AI strategy and cloud business growth.
Why it matters
This rally signals a major shift in investor sentiment regarding the profitability of massive AI infrastructure investments.
Microsoft’s stock has biggest one-day gain since 2008, adding $480 billion in market value as cloud business booms Amanda Gerut Thu, July 30, 2026 at 3:45 PM EDT 5 min read MSFT +3.02% Trade MSFT on Coinbase Trading disclosure Trading disclosure The above button links to Coinbase. Yahoo Finance is not a broker-dealer or investment adviser and does not offer securities or cryptocurrencies for sale or facilitate trading. Coinbase pays us for certain activity generated through this link. Prices displayed are informational.
Microsoft stock prices surged as much as 17% on Thursday to above $455, the largest single-day gain in nearly 20 years.
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