Source: https://mochatrade.com/learn/glossary/ipo

# IPO (US)
URL: https://mochatrade.com/learn/glossary/ipo
Last modified: 2026-10-17

A US IPO is a company's first sale of shares to the public, registered with the SEC in an S-1 filing. In June 2026 SpaceX raised $75 billion in one listing, [nearly four times India's best IPO year](https://mochatrade.com/learn/start-here/us-markets-for-indian-traders). The S-1 is [on EDGAR the moment it is filed](https://mochatrade.com/learn/start-here/how-to-read-us-market-news), and the first trade is [an opening auction](https://mochatrade.com/learn/us-market-structure/how-us-stock-prices-form).

## Related terms

- Opening auction: https://mochatrade.com/learn/glossary/opening-auction
- SEC: https://mochatrade.com/learn/glossary/sec
- SPY ETF: https://mochatrade.com/learn/glossary/spy-etf
- Direct listing / SPAC: https://mochatrade.com/learn/glossary/direct-listing-spac
- Market capitalization: https://mochatrade.com/learn/glossary/market-capitalization
- Volume: https://mochatrade.com/learn/glossary/volume