There is no way to know who controls the market, I believe that the level we are today would have to be a joint action in order to have some influence on the flow of btc.
the price is always dominated by big players, so if there is a very fast price movement and is more likely to side with the big players then we can be sure there is a price game going on. Bitcoin has entered a free and global market so it is a big investor who will always get more profits from small players. if we want profit, we can follow price movements and follow the steps of large investors, because the potential profits we can get.
People or institution who can control the price is people or institution who hold large stake. They can control demand and supply. If demand and supply controlled, i am believe the price can controlled too