Microsoft Nears $4 Trillion: MSFT Stock Soars on AI Boom – Can $600 Be Next?
Microsoft’s stock has been on a tear in recent weeks, climbing to its highest levels in months on the back of strong optimism around artificial intelligence. As of October 28, 2025, MSFT is trading in the low-$530s per share – up from the ~$520 range a week ago and not far from its record peak. On Monday, the stock surged 1.5% to close at $531.52stockanalysis.com, bringing Microsoft’s market cap to roughly $3.8 trillionts2.tech. This market value firmly ranks Microsoft among the world’s most valuable companiests2.tech. Year-to-date, Microsoft shares have now gained about 25%ts2.tech, outperforming the S&P 500 and Nasdaq indexes. For comparison, the tech-heavy Nasdaq is up ~22% in 2025, and rival mega-cap Amazon’s stock is barely positivetradingkey.com – underscoring Microsoft’s standout performance in the “AI rally.”