The Rs 151 crore initial public offering (IPO) of Mumbai-based non-banking financial company (NBFC) Manba Finance is set to open for public subscription on September 23 and will close on September 25. The Rs 151 crore initial public offering (IPO) of Mumbai-based non-banking financial company (NBFC) Manba Finance is set to open for public subscription on September 23 and will close on September 25. Economic Times