Sometimes I sell the coin especially if I can see the price increase higher because I learn that after that moment, the price will get down and maybe it will get down too thick. So I don't want to miss the chance to sell the coin at the high price, and I don't sell all of my coins because I will wait for another day to see the price is in the top rate again. And after the price is down hard, I will make repurchase the coin so I can have another chance to make a profit.