The stock market bounced back sharply on July 30, with the Nasdaq climbing 2.78% to 25,122.18 as investors to invest in technology stocks surged on Microsoft’s record-breaking performance. Microsoft shares jumped over 15%, marking the tech giant’s best day since 2008 and adding $450 billion in market value—the greatest-ever single-day increase for any company on Wall Street, according to Reuters.
The rally was fueled by Microsoft’s stellar fiscal fourth-quarter earnings report released late July 29. The company reported quarterly revenue of $90 billion, up 18% year-over-year and ahead of expectations, while Azure cloud revenue surpassed $100 billion for the full fiscal year 2026 for the first time, growing 41% annually, according to the Wall Street Journal and Quartz.
Azure’s quarterly growth accelerated to 43%, the fastest pace in four years, addressing a key concern that had rattled markets earlier in the week. Investors had grown worried about whether massive spending on artificial intelligence infrastructure by major tech firms would pay off. Alphabet and Tesla’s reports of negative free cash flow last week had sparked a wave of selling in AI-linked stocks, with semiconductor shares also under pressure.
Microsoft’s results eased those fears. The company forecast quarterly sales and cloud growth above expectations while reporting capital expenditures below estimates, signaling it could sustain profitability even amid heavy AI investment. “Microsoft delivered yesterday, and maybe Microsoft is going to be able to move itself from the ‘battleground’ camp to be a ‘trusted AI winner’ stock,” Jed Ellerbroek, portfolio manager at Argent Capital Management, told Reuters.
The semiconductor sector led the broader rally, with the PHLX chip index surging 8.2%. Micron Technology jumped 18%, SanDisk soared 26%, and Advanced Micro Devices rose 13%, all buoyed by the prospect of sustained cloud and AI spending. The S&P 500 gained 1.66% to 7,437.63, while the Dow Jones Industrial Average rose 1.19% to 52,208.06.
Recovery After Fed Uncertainty
The strong rally reversed steep losses from the prior day. On July 29, U.S. stocks closed sharply lower after the Federal Reserve left interest rates unchanged, with mixed messaging from new Fed Chair Kevin Warsh leaving traders uncertain about the path of borrowing costs. The 30-year Treasury yield had surged to its highest level in 19 years on those concerns.
The swift recovery underscores how dependent market sentiment remains on earnings clarity from major tech firms. With investors questioning whether the massive capital spending on AI infrastructure would generate adequate returns, Microsoft’s proof of accelerating cloud growth and continued profitability provided the reassurance the market needed to shift direction decisively.
Sources
- Reuters — Microsoft’s 15%+ surge, $450 billion market cap increase as record single-day gain, Nasdaq 2.78% rise, chip stocks 8.2% jump, Fed context, and analyst commentary from Argent Capital Management
- Wall Street Journal — Azure cloud revenue surpassed $100 billion in fiscal 2026, quarterly growth rate of 43%, Microsoft profit jump of 31%
- Quartz — Azure tops $100 billion in annual revenue for first time
- Yahoo Finance — Microsoft Q4 fiscal 2026 revenue of $90 billion, up 18%, ahead of $87.62 billion estimate
