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Why Jan. 28 Was a Historic Day for Microsoft for All the Wrong Reasons

The company lost hundreds of billions in market cap.

By Stefon Walters Jan 30, 2026 at 9:59AM EST

Key Points

  • Its stock plunged by around 12% in the hour after the market opened on Jan. 29.
  • The diversified technology giant beat revenue and EPS expectations.
  • Investors aren't happy with Microsoft's increased spending with little to show for it.

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