Although you can't specifically add a stop loss on the same deal ticket, you can manually set up the functionality so that when the market moves down, the order will execute to get out of your position.  You can also set up a 'limit' to take profit as well. Unfortunately we don't currently offer trailing stop losses on a share dealing account, but I will make sure this is submitted as feedback.   How to set stop losses on share dealing   Lets say you have an open position of 5000 BARC shares