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The book building process in an IPO is a price-discovery mechanism in which investors bid for shares within a price range rather than buying at a fixed price. The final issue price gets decided based on the demand that was received during the bidding period
SEBI says that book bidding helps to analyse a fair market process and improves equality in public issues.
The company asks investors, "At what price can you buy our shares?
We have mentioned some of the main book building process steps that are followed in India:
From the above steps, we can say that IPO pricing is fair, transparent, and completely driven by real investor demand.
We have mentioned a simple flowchart that will help you understand the book-building process in a clear and step-by-step manner.
Company Plans IPO
↓
Appointment of Book Running Lead Manager
↓
DRHP Filed with SEBI
↓
Price Band Announcement
↓
Investor Bidding Period
↓
Demand Analysis
↓
Final Price (Cut-Off Price)
↓
Allotment & Listing
From this book building process diagram, we can easily understand how pricing shifts from estimation to market-driven valuation.
SEBI (Issue of Capital and Disclosure Requirements) regulations mainly govern the book building process in company law
Some key legal points:
With the help of regulatory oversight, the book building process in company law protects both issuers and investors.
Let's understand this concept with a real-life example
Suppose XYZ Ltd. launches an IPO:
₹112 will become the cut-off price, and the shares will be allocated accordingly.
The chances of overpricing or underpricing will decrease because of the demand-based pricing.
We have mentioned some major advantages of the book building process in the following table:
From the table, we can understand that the book-building process makes IPOs more efficient, fair, and investor-friendly by ensuring accurate pricing and better participation.
The reverse book building process works opposite to IPO book building.
In the IPO building process, the investors used to bid for shares, but in the reverse book building process, shareholders bid prices at which they want to sell shares back to the company.
The reverse book building process is mainly used in
This ensures fair valuation and protects the minority shareholders.
In the following table, we have mentioned the key difference between a fixed-price IPO and a book-building IPO:
From the above difference, we can say that a book-building IPO is more reliable and transparent when compared to a fixed-price IPO because it reflects real market demand and reduces pricing risk.
The book-building process in IPO has changed how companies raise capital in modern markets. With the help of structured bidding, transparent pricing, and regulatory monitoring under the book-building process in company law, it makes
sure that there is fairness for both companies and investors.
Bonus Tip
Always bid at the cut-off price as a retail investor in IPOs. It will increase your chances of allotment without getting worried about selecting the exact price.
What is the difference between book building and reverse book building?
Book building is used during IPOs to sell shares, while reverse book building is used during delisting or buybacks to determine the exit price for shareholders.
How does the book building process work in an IPO?
The company first announces an IPO with a price band. Then the investors place bids at different prices within that range. Demand is analysed and a final cut-off price is decided based on highest demand. Shares are allotted and then listed on the stock exchange.
During an IPO, who decides exactly how many shares to divide the company into? Why do companies pick those specific targets?
The decision of how many shares the company will be divided into during an IPO is decided by the company’s promoters and management and with merchant bankers (IPO advisors).
They choose the number based on how much money the company wants to raise, company valuation, investor demand, and regulatory guidelines.
How to start building my own book?
First, you have to start with the research, do good research, define a price band, collect investors' bids, and then analyse the demand to fix a final price.
How are shares allotted in the IPO book building processes?
Shares are allotted based on demand at the cut-off price, with proportional distribution among investors.
About the author

LoansJagat Team
Contributor‘Simplify Finance for Everyone.’ This is the common goal of our team, as we try to explain any topic with relatable examples. From personal to business finance, managing EMIs to becoming debt-free, we do extensive research on each and every parameter, so you don’t have to. Scroll up and have a look at what 15+ years of experience in the BFSI sector looks like.
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