- Microsoft's stock had its biggest one-day gain since 2008, adding $483 billion in market value on July 30, 2026.
- Shares of the Redmond, Washington-based company soared as much as 17%, adding $490 billion to its market capitalization as of 12:55 p.m. in New York.
- If that holds through the close it would eclipse Nvidia Corp.’s $440 billion addition, following President Donald Trump’s announcement of a 90-day tariff pause last year, as the biggest ever.
- Microsoft Corp. is on track to record the largest one-day increase in market value for any stock in history.
Microsoft Corp. is poised to achieve the largest one-day market value increase in history, with shares soaring 17% and adding $490 billion to its market capitalization. This surge follows the company's impressive fiscal fourth-quarter results, which revealed a quarterly revenue of $90 billion, exceeding analysts' expectations by $2.4 billion and reflecting a 17.7% increase from the previous year.46
The stock closed at $390.54 on Wednesday and briefly hit $456 during Thursday's trading, marking the biggest one-day gain since 2008, when Microsoft’s stock increased 19%. If this trend holds, it would surpass Nvidia Corp.'s previous record of $440 billion added in a single day.5
Earnings per share reached $4.74, significantly above the consensus estimate of $4.24, contributing to a total quarterly net income of $35.8 billion. CEO Satya Nadella highlighted that Azure revenue crossed $100 billion for the first time, with projections for the full fiscal year estimating $104 billion, up from $75 billion last year. Additionally, OpenAI contributed $24.1 billion to fiscal 2026 revenue, with $6 billion still owed to Microsoft.
Analysts noted that the quarter showcased significant AI-driven momentum across Microsoft’s application and infrastructure business lines, indicating a robust future for the tech giant.
“Shares of Microsoft surged as much as 17%, adding $490 billion to its market capitalization, marking the largest one-day increase for any stock in history. This eclipses Nvidia Corp.'s previous record of $440 billion, set after a significant tariff announcement last year.”
