I see the question asked around the Internet about how much a day trader makes or what is the realistic expectation if you make money as a day trader, but I never see what the criteria is to be considered a successful day trader. In poker the ability is measured by X amount of big bets (BB) per one hundred hands with 3 being considered a profitable player, 3BB/ 100 4 considered extremely good, and 5 unsustainable. It is stated that it takes 100,000 hands to truly know due to variance and probability. 2 people playing 100 hands could potentially have 100 winning hands and 100 losing hands. The 100 hand winner could play -EV (expected value) while the 100 hand loser plays +EV and loses every hand still, both due to variance. However, over the course of 100,000 hands the player playing with the higher probability will come out ahead while the -EV player busts. So what is the measurement in the world of daytrading? It's about profitability. I could play higher risk/ reward trades with more trades than the lower risk/ reward trader and if we are both good come out the same. So is it X% profitability or what not over the course of X amount of trades to be considered a profitable daytrader? What are the numbers if you were to assign a formula to it? 60% profitable over 10,000 trades? I'm just throwing out numbers as an example. What would you consider an industry standard for pronouncing a trader as being profitable and professional in daytrading? Thank you in advance.