indian online insurance platform policybazaar is planning to file a draft prospectus as soon as next month for its mumbai initial public offering that could raise about 500 million according to people familiar with the matter the softbank group corpbacked startup is seeking a listing before the end of this year said the people asking not to be identified as the information is private an offering which could value policybazaar at more than 35 billion would involve new stocks and secondary shares from existing shareholders the people said