It is possible... One time I traded 4$ into 800$ in 30 days. It was such a small amount of money I did foolish trades, but it was a day where they pushed BTCD 1500% increase. Then ripple began to fly and I bought all ripple and put it in margin and went long. Crazy. But then Poloniex lag and steal back 1/4 of my money by ignoring the orders I place and glitchting/scamming me.