I guess it is just fine if you would do trading using someone else's fund since they were the ones who have asked you a favor to do it for them. Just make a clarification to them about the consequences that may arise while doing the trade just to make thing clear for them not to put pressure on you to make profit for their own sake. We all know the risks that can be associated while doing trades on which we cannot assure that we can be able to always gain profit and it takes time for a very successful trade to come. Once you have already cleared those things into the one who asked you a favor of doing trades by using their funds.
I guess I could always open a second trading account which would keep the funds separate, however, this would be a bit of a pain having to sign in and out of multiple accounts.
Thanks.
Edit: Just so everyone knows, a close friend of mine has asked me to trade with some of their money. They have witnessed my trading and know that I am profitable. It is NOT a random person as others have suggested on this thread. Either way this does not matter and I would like to keep the discussion on topic.
This is the solution to supporting someone who is a trader and isn't making profit or someone who has the desire to invest with you. Open a separate account for the individuals if you are willing to trade for them.
The pain of signing in and out of accounts is fairer than the pain of endless and stressful calculation of percentage of profit or loss of a joint account.
This is sincerely agreeable and the best solution to resolve the problem when it comes to the partition or doing calculation about the percentage of doing the trade using other else's funds. Also, this is a really fair solution if you would do that because it is a clear implication that aside from having extra income, you are really up into helping your friends who are not a trader to trade their money to be capable of gaining profit on it. It would be a great move indeed although it would be a hassle to create or open up another trading account for the sake of helping the one's who have asked you a favor to trade using their money but it would be a great solution to easily calculate the percentage once trade was done so that their trades will not be mixed up on yours to avoid confusion.