Five years after backing Paytm, Chinese billionaire Jack Ma, led by Alibaba and Ant Financials, has sold his entire stake in Paytm Mall, his e-commerce platform. Alibaba sold its 28.34% stake and its subsidiary Ant Financials dumped its 14.98% share. Together, the two Chinese companies have shed their 43.32% stake. Paytm E-commerce, the parent company of Paytm Mall, has bought back the shares for Rs 42 crore. The deal valued the business at just Rs 100 crore. It was a huge drop for Paytm Mall since its last fundraising round in 2020, when it was valued at $3 billion (Rs…