Well that really happens sometimes in the world of crypto trading but the main reason for such pumps are the groups that pump some coins and if someone take action at perfect moment then there are chances of even more profits.

I have studied the rhythms of such pumps in past and to my goodness the profit was good but nobody knows what happens next moment in the world of cryptos because inflation rates are unpredictable and suddenly I lost many of my earnings because of the Bitcoin's collapse. And, after that I decided to hold rather than redo such risky tasks.