You can bust a trade using the Order Cancellation Request form. After you submit this form to inform us of problem or erroneous trades, we will report these trades to the appropriate exchange on a best efforts basis. Please note that this is a time-sensitive process. Most exchanges have very short time periods (as little as 8 minutes), during which they will accept a request for cancellation.
We recommend that traders find and report problematic trades using this tool and thereafter follow up immediately, contacting us by telephone. In addition to uncertainties in response speed, trade cancellation requests initiated by telephone are prone to delays identifying the correct account and transactions.
To request a trade cancellation
The Order Cancellation Form opens.
Note: You can also access the Order Cancellation Request by clicking the Compose button in the Message Center.
For more information