As per recent amendments to Prevention of Money Laundering Act (PMLA) Rules, 2017, Financial Institutions dealing with mutual funds are mandated to obtain Aadhaar number from their customers and link the same to the respective accounts.
For the sake of convenience mutual fund registrars namely CAMS, Karvy, Franklin Templeton and Sundaram BNP Paribas are facilitating the process of linking your Aadhaar information in Mutual Funds serviced by them where you have investments.