Japan’s SoftBank Group, private equity fund Warburg Pincus, Singapore sovereign wealth fund Temasek, New York-based hedge fund Tiger Global and Z47 (formerly Matrix Partners India), have seen the value of their holdings in Bhavish Aggarwal’s Ola businesses shrink sharply from their peaks as the electric vehicle maker and the company behind Ola Cabs face stronger competition and falling revenue.ANI Technologies, which operates Ola Cabs, reached a