You have to know how to take advantage of them and pay attention to them when they go up selling a little, but if it is profitable to have several, classify them as good and not as soon as possible. possible and if it gives you profit to sell up and buy back down that simple and also depends if the ace received free or purchased is already at your own discretion if you bought only stay as you can control and follow up to get benefit if not so many you would miss opportunities to make money.