After I have bought back the securities, do I have to return the securities?

A buy-back of securities does not automatically translate into a return of the borrowed securities. To return the borrowed securities, you must either return them via POEMS 2.0 (Acct Mgmt > SBL > Script Returning) or inform your TR of your request to return. Interest charges will be computed as follows:

If securities are returned on purchase due date or earlier, interest will cease to accrue on the purchase due date
If securities are returned after due date of purchase, interest will cease to accrue one day after the return is done