I've come up with a strategy in metastock that seems too good to be true. It produces 89% winning trades, with a trade only being considered winning if it gains 3%. The average hold time is 2 days. I backtested over 4 years on the 100 highest volume stocks over $25 a share. I used a one day delay, so there is no questioning if I could really get the prices I did. It just buys at the open and sells at 3%. Am I missing something huge here? I have never heard of a system this succesful. I am trading on it today, starting very small to see if it works. Naturally I won't be sharing the system, so I guess you guys can't provide too much insight. Has anyone else come up with something this accurate, and if so, why didn't it work?