Isn't it going up via manipulation? It just depends which side of the fence you are on which manipulation bothers you.
It would be an interesting thought experiment to see what would happen if markets required a minimum hold period (eg. if you buy, you cannot sell for any reason for x days). Eliminates a lot of the pump and dump from both sides as you could be locked in and unable to get out as your scheme peaks. Sure people would find a way around it through using intermediaries, but that drives up their costs and I'm not sure the intermediaries are a viable business (sucker layer?).