What is an IPO: Definition, Types and Its Process
If you are looking towards making a short-term gain, investing in an Initial Public Offering or IPO might be effective for you.
IPO is the process that private companies follow to go public and get traded across stock exchanges such as the National Security Exchange (NSE) or the Bombay Stock Exchange (BSE) or both.
In 2025, the IPO market witnessed several private companies going public, raising INR 51,365 crore. It also shows a steep increase from last year, and if you are seeking to grab such a potential opportunity, learn about IPO in detail.
A Brief About Initial Public Offering or IPO
When you hear that a certain company is launching an IPO, you must understand that the company, through this process, will be distributing its shares to the public who applies for them. Once the IPO process is complete, it makes the respective private company a publicly traded company and its shares start trading on the stock market.
Aside from the transition from private to public, when you invest in IPO and, along with investment from other retail, HNI, and institutional investors, the inflow of funds helps the company to fuel its growth, repay its existing debt, help with expansion and more.
From the perspective of an investor, you might be able to capitalise on the listing gains. It means if it opens at a higher price compared to its offered price during the IPO, you make a profit.
Different Types of IPOs
1. Book Building Method
It acts like an auction of shares. Here, companies typically set a price range or a price band. Investors take part in the IPO bidding process to state how many shares they intend to purchase. Upon reviewing the bids, companies determine a cut-off price. Investors who have placed bids at or beyond that price typically receive shares based on availability.
2. Fixed-Price IPO Offering
Unlike the book building approach, there is no bidding process in this. Here, IPO-issuing companies set a fixed price per share. Thus, this method does not allow investors to impact share prices that happen in an IPO bidding.
A Detailed Breakdown of an IPO Process
Now that you know the IPO meaning and its type, take a look at the detailed journey of how a private company goes public through an IPO:
1. Decision of Going Public and Documentation
Upon evaluation of growth prospects, needs, readiness and the prevailing market conditions and other factors, a company decides to go public. They hire underwriters to take care of the IPO process. The company also outlines its business model, finances, IPO terms and other factors in a Draft Red Herring Prospectus (DRHP) and submits it to the SEBI for approval.
2. Exchange Selection and Marketing
An IPO-issuing company then chooses between stock exchanges such as the BSE or NSE or both. They also promote their IPO through an IPO roadshow and attract potential investors.
3. Bidding or Fixed Price Offering
For book-building IPOs, as an investor, you must place bids in a price range and specify how many shares you want to subscribe for. For a fixed-price offer, you must apply for the number of shares you want to subscribe to at the pre-determined issue price. Note that for both settings, you subscribe in terms of IPO lot size.
4. Share Allotment
While allocating shares, companies consider whether the IPO is over- or undersubscribed. Underwriters purchase the unsold shares if an IPO is undersubscribed. For oversubscribed ones, you get shares allocated based on pro-rata allotment, lotteries, etc. Companies issue a refund if you do not get an allotment.
5. Listing on Exchanges
On the listing day, the company shares start getting traded on their chosen exchange. Here, if the listing price is higher than the offer price, you book a profit by selling shares and exiting the market. However, you might choose to stay invested if you have a long-term goal.
Conclusion
Companies issue IPOs to go public from private. They hire underwriters who take care of their IPO process. You apply for shares in terms of a lot, either by bidding or at a predetermined price.















