Its a given in the industry that the majority of traders lose. Whether its absolute "I blew $400,000 and I'm out" losing or just the "I can't make this work and I'm closing my account" we get told that 90-95% of new traders will lose and be out of the business in short order. Identifying why might help some of the newer ET members (no, not your new alias) to avoid a few of the pitfalls. So, experienced traders, and less experienced traders who are identifying some issues: why do most traders lose? My pick for first reason: trading: they never had a fully tested systematic way of trading in the first place.