Before the Supreme Court's ruling on September 27, 2018, we, as trading members, were required to collect Aadhar from clients by PMLA Rules and Exchange standards.
We would like to assure you that, in light of this recent judgment, we have removed all AADHAR numbers from our system for all of our clients who have provided us with AADHAR numbers. We do not keep any Aadhar numbers on file, and the only time we may have used your Aadhar information, such as your address, date of birth, and gender as if you provided your Aadhar as evidence of identification/address while registering an account.

So, even if you had previously linked your Aadhar to your trading/Demat account, there is no notion or mechanism for unlinking your Aadhar