3 ms·Only if you don't have infinite money on the side, in which case it's guaranteed to be profitableby anjc 6y agoOnly if you don't have infinite money on the side, in which case it's guaranteed to be profitablersecora 6y agoMartingala with transaction costs are not profitable.WJW 6y agoYou also need the other side of your trades to have infinite money. But in any case, why are you trading at all if you already have infinite money?