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Microsoft went public

On this day · 13 March 1986
45 sec read

Microsoft's stock hit the market at $21 a share, raised $61 million in a day, and quietly minted a generation of millionaires.

Verified · Computer History Museum

On March 13, 1986, Microsoft began trading on the NASDAQ stock exchange, nearly eleven years after Bill Gates and Paul Allen founded it. Shares were offered at $21, climbed to roughly $28 by the close of the first day, and the offering raised about $61 million.

The company hadn’t been desperate for cash; Gates reportedly preferred to stay private. But an expansive employee stock-option program had pushed Microsoft toward 500 private shareholders, the threshold that forces a company to register with the Securities and Exchange Commission. Going public was, in effect, inevitable.

The day made Gates—who held about 45% of the stock—a paper billionaire-in-waiting before he turned 31.

The IPO was hailed as the offering of the year and helped cement Wall Street’s appetite for software companies. Far beyond Redmond, it turned early employees holding options into a new and unusually large class of tech millionaires.

$21
offer price
$61M
raised
1986
NASDAQ debut

Sources & references

2 references

Well-established. Corroborated by 2 independent sources.

1 Computer History Museum institution “The initial share price was set at $28 dollars a share, raising almost 61 million dollars in a single day.” computerhistory.org ↗
2 Microsoft Learn — The History of Microsoft, 1986 Corporate history archive “March 13, 1986: Microsoft stock goes public at $21 per share, rising to $28 per share by the end of the first trading day. The initial public offering raises $61 million.” learn.microsoft.com ↗
✓ Last reviewed Jun 7, 2026

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