Book Building Process
The book building process is a price discovery mechanism used in IPOs where the final issue price is determined based on bids received from investors during the subscription period. Instead of fixing one price upfront, the company announces a price band and lets market demand set the final price.
What Is Book Building?
In a book-built IPO, the company and its investment banks announce a price band (e.g., Rs 200 to Rs 225). Investors then bid for shares at prices within this range. The “book” refers to the record of all bids received across price points and investor categories.
After the subscription period closes, the issuer and lead managers analyse the book and fix the final issue price within or at the upper end of the band, at the point where the required number of shares can be sold.
Participants in Book Building
– **QIBs (Qualified Institutional Buyers)**: institutional investors who bid for large quantities; their bids are crucial for price discovery
– **Non-Institutional Investors (NIIs/HNIs)**: high-net-worth individuals who bid above Rs 2 lakh
– **Retail Individual Investors (RIIs)**: individuals who bid up to Rs 2 lakh per application
– **Anchor investors**: institutional investors who bid one day before the IPO opens
Steps in Book Building
1. Company files Draft Red Herring Prospectus (DRHP) with SEBI
2. SEBI approves; company announces price band and subscription dates
3. Subscription opens; investors bid at prices within the band
4. Book is recorded and updated in real time during the subscription period
5. Subscription closes; issuer and bankers determine the cut-off price
6. Final issue price announced; allotment begins
Book Building vs Fixed Price Issue
| Feature | Book Building | Fixed Price |
|———|————–|————-|
| Price discovery | Through investor bids | Set by company before subscription |
| Retail option | Can bid at cut-off price | Apply at fixed price |
| Common in India | Most large IPOs | Smaller SME IPOs |
Practical Example
A manufacturing company announces a price band of Rs 420 to Rs 450. On day 3, it receives bids for 5x shares at Rs 450, 3x at Rs 440, and 1.5x at Rs 430. The book shows strong demand at Rs 450. The issuer sets the final price at Rs 450, the upper end of the band. Retail investors who selected cut-off price are allotted at Rs 450.
Key Takeaways
– Book building is a demand-driven price discovery mechanism for IPOs
– A price band is announced; investors bid within this range during the subscription period
– Final issue price is determined at the level where the required shares can be sold
– QIB demand at higher prices helps justify a higher final price
– Retail investors can use the cut-off price option to participate without specifying an exact bid price
