When a company issue shares for the first time, that company has to bring IPO in the share market.
That company raises funds for the company through IPO, so that the company's business can grow in future.
Before brining IPO, the company has very few shareholders, but after the IPO, the company bring its shares for the people.
If you want to invest in any company in the share market, then you must do fundamental analysis of that company.
Similarly, before investing money in the IPO of any company, you should know the financial information of that company.
Fix price IPO is called issue price. In the stock market, a company sets a fixed price offering for the primary selling of its shares.
In book building offering, the company which launches the IPO give a 20% price band to the investor.