Microsoft stock dips after-hours as Bristol Myers AI lung-cancer deal lands and tariff jitters shake tech
New York, January 20, 2026, 16:33 (EST) — After-hours trading underway. Shares of Microsoft Corp dipped 1.1% to $454.52 in after-hours trading Tuesday, moving between $449.06 and $456.76 during the session. The software giant’s market cap stands near $3.85 trillion. The stock fell amid a tough session for risk assets, as trade news and rate concerns drove investors away from popular growth stocks. Microsoft, often seen as a gauge for enterprise tech spending, typically tracks these shifts closely. Timing complicates things. As earnings season nears, even routine company updates can spark a sharper market move—or be dismissed altogether—based on what