Chinese e-commerce giant Alibaba Group Holdings has bought out former IDFC Securities equity analyst Nikhil Vora’s stake in One97 Communications, the parent company of leading digital payments major Paytm. The transaction was part of a larger secondary share sale round in which institutional investors Saama Capital, Sapphire Ventures and Reliance Capital sold their holdings in One97 to Alibaba and its payment affiliate Alipay.