Thanks Quasi... It looks like it can do the trick. I checked a few stocks with that system, and it doesn't seem to be a good technique :-( By the way, is there a way to find out which are the best trading systems (the one with above 60-70% probability of success)? I'm a mid-term trader (a few weeks to a few months), I don't daytrade, and I would like to design such a system. Where should I start? (I've already read tons of books ;-) )