Ant Group Co.’s profit nearly grew 193% in the June quarter, reversing a year-long decline as the fintech company regained its footing from a government crackdown. Hangzhou-based Ant contributed nearly 2.48 billion yuan ($343 million) of profit to Alibaba Group Holding Ltd. Based on Alibaba’s one-third stake in Ant, that translates to an estimated 7.5 billion yuan in profit for the three months ended in June, according to Bloomberg calculations based on the listed company’s disclosures....