If you mean that we need to send our bitcoin to that broker and let them work in anything that can profit, I will not do that because that is too risky to do. We do not control the bitcoin directly and we can not watch what they can do, and they can scam us anytime. I prefer to hold it for myself rather than send the bitcoin to them or use my bitcoin to trade by myself. At least, I know the risk of that, and I can manage the bitcoin that I will use for making a profit. That will not be recommended to do, even if you know a trusted broker who says it will help you make money from bitcoin.