IPO (Initial Public Offering)

An IPO is a private company’s first sale of shares to the public, listing it on an exchange.

A quick example

Picture this

A hot tech company prices its IPO at $40, and the stock opens at $85 — a first-day pop of more than 100%. A retail investor buys at $80, convinced the momentum will continue. Three months later the stock trades at $32, below even the IPO price, as the hype fades and early investors take profits. The first-day gain went to those who received allocations; the chase buyer handed money to them. This pattern repeats across most IPOs, which is why the first-day pop is a signal to be cautious, not excited.

What it means for you

It is how startups become household-name stocks and early owners cash out.

How to apply it

If an IPO interests you, wait for the hype to settle rather than chasing day one. Check the financials, the lock-up expiry (when insiders can sell), and how the price behaves after the first month.

Common mix-ups

IPOs are often hyped and volatile; many underperform after the initial pop.

Key takeaway

An IPO is priced by insiders and banks to favour the people who get allocations, and the first-day pop often belongs to them, not to retail buyers who chase it. Studies show IPO stocks on average underperform in the months after the debut as hype fades and lock-ups expire. If an IPO interests you, wait for the noise to settle, check the financials, and watch what happens after the first month. The day-one excitement is the most expensive part of the story.

Definitions reviewed by the Investing Glossary editorial team.