A book building that completes in a very short period of time (e.g., a few hours). Book-building is a technique used to place securities on the market. It is the process that involves  collection of information about investors’ intentions as to the volumes they are willing to have and the prices they are willing to offer for a security. The bank marketing an offering gathers this information about investors’ intentions as to required quantities and corresponding offer prices. Book building is a method of pre-market price discovery for initial public offerings (IPOs) and secondary offerings.

Accelerated book building are used to sell a large block of securities or to raise capital in very short periods of time. The underwriting investment bank has to build the order book, set the final price, and allocate the securities within short periods, such as 48 hours or less. The process does not require any roadshows.