An initial public offering (IPO) is a significant milestone for any company, marking its transition from private to public ownership. To help investors and the general public better understand the process, here is a glossary of key terms associated with IPOs.
Key IPO Terms
Underwriting
Underwriting is the process by which investment banks assume the risk of buying the newly issued shares from the company and selling them to the public. The underwriter helps set the initial offering price and ensures the shares are distributed to investors.
Prospectus
A prospectus is a formal legal document that provides details about the company, its financials, risks, and the terms of the offering. It is filed with regulatory authorities and made available to potential investors.
Offering Price
The offering price is the price at which the company's shares are sold to the public during the IPO. This price is determined by the underwriter based on demand and the company's valuation.
Lock-Up Period
The lock-up period is a specified time after the IPO during which company insiders, such as founders and early investors, are prohibited from selling their shares. This helps stabilize the stock price after the offering.
Over-Allotment Option
Also known as the greenshoe option, this allows underwriters to sell additional shares beyond the original offering size, typically up to 15% more, to meet excess demand and stabilize the stock price.
Secondary Offering
A secondary offering occurs when existing shareholders, such as venture capitalists or employees, sell their shares to the public. Unlike an IPO, the company does not receive proceeds from a secondary offering.
Roadshow
A roadshow is a series of presentations made by the company's management to potential investors, such as institutional investors and analysts, to generate interest in the IPO.
Book Building
Book building is the process of collecting bids from investors to determine the demand for the IPO and help set the final offering price. It involves institutional investors indicating the number of shares they are willing to buy and at what price.
Pricing Date
The pricing date is the day on which the final offering price for the IPO is set, typically the evening before the stock begins trading on the exchange.
Listing Day
Listing day is the first day the company's shares trade on a public stock exchange, such as the New York Stock Exchange or Nasdaq. It marks the culmination of the IPO process.
Understanding these terms can help investors navigate the IPO landscape and make informed decisions. As more companies consider going public, having a grasp of the IPO process becomes increasingly valuable.



