The minimum capital that is required to trade effectively and compound profit is 50$; anything below that means that you are literally wasting your own calls, signals; because without a good capital; the only way to make money is if you are making over 100% profit which is not sustainable. Your profit is someone else trade capital; so i implore us to twice your trading capital.
And once again, if you are to scared to loose money; then don't trade, it is not for you
actually trading with a minimum capital of say 50% but, if the trader has good skills, he will still make a profit. different from the capital of $ 100 but the unprofessional trader will only result in losses. from here we conclude that trading is not about capital, but about abilities and skills and good trading techniques.