Securities and Exchange Commission(SEC) of Bangladesh has initiated to develop Book Building System in collaboration with Dhaka Stock Exchange(DSE), Chittagong Stock Exchange(CSE) and Central Depository of Bangladesh Limited(CDBL) for the efficient, fair and transparent price discovery and allocation of securities using Book Building System at the time of initial public offerings. In this context, SEC has already made required modifications in the rules and regulations and notified the stake holders through its circuler.