Trading without a stop loss is breaking one of the most fundamental trading rules there is. You need to manage your risk by using a stop loss on every trade. Not having a stop loss will keep you in a trade until you close it out for a major loss. You may even get a big winning trade on occasion but eventually the one big move against you will do you in in my humble opinion. Trading is not about winning that 1 big trade it is about repeatedly making small profits over time and increasing your account while protecting your trading capital.