Illegally making a trade for a personal account or a preferred customerÂ’s account with the advance knowledge that a large order is in the market or will be coming to the market that likely will create a profit. Front running is possible in situations in which traders in the futures or stock markets trade both for their own accounts and their customersÂ’ accounts, a practice known as duel trading. However, just because a trader engages in dual trading doesnÂ’t mean that the trader is involved with front running.