if you are talking about the prices changing so very much, it's probably tied to the market volume still being relatively small (in comparison to other markets),
I think that explains why a small group of whales can themselves make the price crash by selling, then they can buy back more at a lower price.
Exactly price of all coins hoing down due to low volume on market and that's why whale taking advantage of it they selling their coin at low price and they want to buy at more lowest price.