Low volume currency , they can easily manipulate the price by giving fake trades and increase the price that way. Its not an honest trading views this just manipulated by owner or one of the supply holders so they can exit with high profit selling it to other traders.
No legitimate currency can give that profit in a day only shit coins do that.
So sad that even altcoins now can be manage just to put them high profit. Why not run the crowdfunds instead? If this could be the reason then there is nothing good with cryptocurrency. I admit that cryptocurrency has unique system especially when it comes market price movement.
Anyway, I.hope that this is not true. I may exagerrate this reply but yes this really look bad if coins will be manipulated. There is no way that crowd will going to invest anmymore because of these manipulation activities in their own coins.