Microsoft sets record with near $450 billion single-day gain in market value

Microsoft added nearly $450 billion in market value on Thursday, the largest one-day gain on record for a company, after it forecast stronger-than-expected cloud growth and signaled continued cash generation through its new fiscal year.

The software giant’s shares closed up more than 15%, lifting its market capitalization to $3.35 trillion, ‌surpassing chip ⁠giant Nvidia’s ⁠previous record one-day gain of $441 billion on April 9, 2025, according to LSEG data.