The IPO of Billionbrains Garage Ventures, parent company of stockbroking platform Groww, was fully subscribed (101%) on its second day of public bidding on Thursday. The issue received bids for nearly 37 crore shares against an offer size of 36.47 crore shares, NSE data showed at 11:15 am. Retail investors led the surge, subscribing their reserved portion 3.41 times (341%).