A couple of weeks back, HDFC Mutual Fund’s Chief Investment Officer Prashant Jain quit his job after 19 years at the company. Jain has been one of India’s most celebrated fund managers over the decades, even though he had been going through a lean period in the last few years. Jain’s reputation as an exceptional fund manager arises from his track record of being able to build long-term returns by making good gains in good times and then