You have the option of freezing the securities in your account to make sure that they can’t be sold for a specific period of time or until you ask us to unfreeze the securities. You will need to fill up a freeze/unfreeze request form and send the physically signed form to our office.
Instructions to fill out the freeze/unfreeze request form.
NOTE:
Frozen for debit implies that the holdings cannot be sold and frozen for credit, so more units of the security cannot be bought. If you only want to place a restriction on selling the holdings, select debit.
It should take anywhere from 48 to 72 working hours to process the freeze/unfreeze request.
All securities in your demat account (like stocks, mutual funds, G-secs, etc.) can be frozen.
Read More: How to freeze stocks in my demat account?