Realistically. Not profit every day, but net profitability at the end of the year on average. $100k? $500k? $1M? What markets would you trade? This is a serious discussion, but I expect there will be a good number of people who want to talk about how martingaling is a losing proposition, or some other such BS that isn't the topic of the thread. If you set up your entries correctly, you won't blow your account martingaling on the long side, so let's not turn this into a "martingaling = always lose" argument. Martingaling is only catastrophic when you run out of money and price can still go against you. That's why this is a long term thing and not an intraday/tight range thing. For the sake of discussion, with a $10M account you could make a profit every month martingaling the ES. Let's assume that $10M isn't realistic for most people. So what's the minimum amount of money you would need to martingale profitably? And how would you do it? Would you: a) Structure a logical entry/exit/position sizing strategy? or b) Just randomly throw more money at the market every time you are down by "a good amount." Eventually it WILL reverse and you will become profitable (assuming a long bias). And what instrument would you trade? Futures? Stocks? SPY? I actually wouldn't try it with Forex.