if you are trading correctly, you will have reviewed a 2 month look at the chart to make sure all panics had bounces.. so if your chart changes, and does not bounce properly, then you need to stop buying it.. something has changed.. the odds are no good no more.. so you stop buying it, and you start selling into every little bounce it gives you.. thats how i take a loss ( but if you read the chart correctly, it will almost never happen) it happened tho for me on AMP this month.. one trade that didnt work out .. showing a weak chart now.. so im not buying more.. and will be letting it go for a small loss on every move up