Microsoft CEO Satya Nadella-backed Groww to file for $800 million IPO by ET Markets | September 12, 2025 8:05 pm | Indian Stocks, Market, News Groww’s parent, Billionbrains Garage Ventures, plans to file for a $650–800 million IPO in Mumbai, aiming at an $8 billion valuation, backed by Satya Nadella. If successful, Groww will surpass Angel One as India’s most valuable brokerage.