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Initial Public Offering

corporate finance
Definition
The first sale of a company's stock to the public on a stock exchange.

Explanation

An IPO transforms a private company into a publicly traded one. The process involves: selecting underwriters (investment banks), SEC registration (S-1 filing), roadshow (marketing to institutional investors), pricing (setting the initial share price), and first-day trading. IPOs historically underperform the market over 3-5 year horizons — research by Jay Ritter shows average IPO underperformance of 2-3% annually versus matched firms. Exceptions exist, but the 'IPO pop' (first-day price jump) often represents the peak of enthusiasm.

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