Running Losses? Chris Purdy, Sales Trader at Spreadex comments. A lot of new traders will close a trade as soon as they see a loss. It is very tempting to only focus on the profits and losses and to close trades that are losing. But sometimes things will get worse before they get better - this is very true in financial markets and it can take strong nerves to endure losses and wait for a trade to become profitable. It is equally important to run your winners though.