What Is IPO Book Building? What Does the Book-Building Date Mean?

IPO book building is the period when investors submit demand for shares before a company starts trading on the stock exchange. During this process, investors apply through a bank or brokerage firm by entering the number of lots or the amount they want to request. After the book-building period ends, the allocation process is completed and the final number of lots allocated to each investor becomes clear.

The book-building date is one of the most important details in an IPO. Applications can usually be submitted only during the announced date and time range. This content is for informational purposes only and does not constitute investment advice. Before participating in an IPO, investors should review the prospectus, price determination report, allocation method and official announcements.

What Does IPO Book Building Mean?

IPO book building is the process where investors submit applications for the shares offered by a company before those shares begin trading on the stock exchange. The company announces the IPO price, number of shares offered, allocation method and book-building dates. Investors then submit their requests during the announced period.

This process takes place before the company’s shares start trading. In other words, investors apply for the IPO before the stock becomes available for regular trading on the exchange. After book building is completed, allocation results are announced and the first trading date is followed separately.

What Does the Book-Building Date Mean?

The book-building date refers to the start and end dates during which investors can apply for an IPO. For example, if the book-building period is announced as 10-12 June, investors can usually submit their requests during that date range.

The duration of book building is not the same for every IPO. In some IPOs, the process may last a few days. In some cases, the final application time may also vary depending on the bank or brokerage firm. Therefore, investors should check both the IPO calendar and the final application time shown by their own institution.

To follow current IPO dates, visit the IPO calendar.

How Does the IPO Book-Building Process Work?

The book-building process generally follows these steps:

To learn the full IPO application process, read the how to buy an IPO guide.

Are Book Building and Allocation the Same Thing?

No. Book building and allocation are not the same thing. Book building is the period when investors submit their IPO requests. Allocation is the process that determines how many lots each investor will receive after all requests are collected.

For example, an investor may request 100 lots during the book-building period. However, if total demand is high, the investor may not receive all 100 lots. The allocation result depends on the IPO size, number of participants, total demand and allocation method.

How Many Lots Can You Receive After Book Building?

The final number of lots becomes clear after book building is completed and allocation is finalized. However, this number cannot be known with certainty in advance. The allocation method, such as equal allocation or proportional allocation, can directly affect the result.

In equal allocation, the number of participants may be more important. In proportional allocation, the amount or number of lots requested by the investor may play a stronger role.

To estimate possible lot distribution, you can use the IPO lot calculator.

Simple IPO Book-Building Example

The following example is hypothetical and does not represent any specific IPO.

In this example, the investor requests 100 lots but receives 25 lots after allocation. The timing of the release or refund of the unused amount may vary depending on the bank or brokerage firm.

What Should Be Checked Before the Book-Building Period?

Before participating in an IPO, investors should not check only the date. The main conditions of the IPO should also be reviewed.

• Book-building start and end dates: The application period should be checked carefully.
• IPO price: The price per share should be known before submitting a request.
• Allocation method: Investors should check whether the IPO uses equal allocation or proportional allocation.
• Participating institutions: The banks and brokerage firms collecting demand should be confirmed.
• Prospectus: The company’s operations, financials and risks should be reviewed.
• Price determination report: The assumptions behind the IPO price should be evaluated.
• First trading date: Investors should follow when the shares will start trading on the exchange.

What Should Investors Pay Attention To?

• Try not to leave the application to the last minute.
• Make sure your investment account is active.
• Check whether you have sufficient balance in your account.
• Confirm that your bank or brokerage firm participates in the IPO.
• Remember that you may not receive all the lots you request.
• Do not make an investment decision based only on expected lot allocation or social media comments.
• Review official documents and announcements.

Frequently Asked Questions

Can I participate in an IPO after the book-building date has passed?

Usually no. After the book-building period ends, new applications are generally not accepted. Therefore, start and end dates should be followed carefully.

Is money withdrawn during the book-building period?

The practice may vary depending on the bank or brokerage firm. In some institutions, the requested amount may be blocked, and the unused amount may be released or refunded after allocation.

Can I request as many lots as I want during book building?

The number of lots or amount that can be requested may depend on the IPO conditions and the institution’s rules. Also, receiving all requested lots is not guaranteed.

When are book-building results announced?

Results are usually announced after the book-building period ends and allocation is completed. The exact timing may vary depending on the IPO and the intermediary institutions.

Is the book-building date the same as the first trading date?

No. Book building is the period when applications are collected. The first trading date is the date when the shares start trading on the stock exchange.

Can I cancel my IPO request?

Cancellation or modification rules may vary depending on the book-building period and the rules of the institution you use. Investors should check their bank or brokerage firm’s explanations before submitting a request.

Conclusion

IPO book building is the period when investors submit applications for shares offered in an IPO. During this process, it is important to follow the dates correctly, understand the allocation method, review official documents and prepare the investment account in advance.

Submitting a request during book building does not mean that all requested lots will definitely be received. The allocation result depends on the IPO size, total demand, number of participants and allocation method. To follow current dates, visit the IPO calendar.

This content is for informational purposes only and does not constitute investment advice. Before participating in an IPO, investors should review the prospectus, price determination report, company financials and official announcements.