(Bloomberg) -- Several of the biggest investors in Paytm’s record-breaking initial public offering added to their stakes in the Indian fintech giant after shares plunged by as much as 41%, according to people familiar with the matter. BlackRock Inc. and Canada Pension Plan Investment Board were among so-called anchor investors in the IPO that bought more Paytm shares on Tuesday and Wednesday, the people said, asking not to be identified discussing private information. The stock climbed for a third day on Thursday, rallying as much as 7% before closing up 2.5% at 1,796.55 rupees in Mumbai.