An initial public offering (IPO) involves a company issuing stock to the public for the first time. It provides a company with access to public capital and increases its credibility and publicity. There are two main types of IPOs: fixed price offerings where the stock price is set initially, and book building where the price is determined after investor bids. Qualified institutional buyers, retail investors, and non-institutional investors can participate in an IPO. Those interested should research the company, note the lock-up period, and have an investment strategy before participating. Some stocks that saw high listing gains in 2022 are also listed.