Every time BTC pumps or dumps in a short time, many people would cry about whales manipulating the price.
If you come to think of it, they are just traders who happen to have HUGE bags that they can affect the price everytime they make a move like shorting and buying back. There are also many traders who are doing this practice, the difference is that they do not have the bags to move the market like "whales" do.
So is it really manipulation?