What % of traders fail?

[professor_frink]

Well, everyone is entitled to an opinion, but I am trying to focus on facts not opinions or biases.
All I am saying is that, after many years experience and simulations, I cannot find any way that short term trading is worthwhile, after taxes and brokerage.

Probably best that you stick with index investing then. The failure rate for trading IS pretty high(though not quite as high as you first mentioned). Good luck with the research if you do continue to look at short term trading, you never know what you might stumble onto