And, of course, like most things in thihs business the number just gets recycled and retold, until no one really knows where it came from to begin with - let alone how reliable it is.
Proper studies have put the number somewhere between 55% and 75% - with different estimates depending on markets, instruments and the definition of 'trader' (day traders vs swing traders, etc).
I was once considering it for a thesis subject, this isnt just stuff in my head for no reason - swear
When you have to shoot, shoot. Dont talk.