now are you investing big money in for getting it double?
Yeah halving could be one of the reason for price rise, but mostly its controlled by China.
Huobi and OKCoin, two Chinese exchanges, now collectively account for some 92% of global trading in bitcoin. The surge in bitcoin buying this weekend could be the latest sign of how Chinese investors are moving money between asset classes quickly in search of high returns.
Not sure if they are buying in anticipation of halving, since they hold 92% and know people would be buying considering halving. So currently they are buying and they make take profit and sell out before halving or just after halving and possible price fall may take place. Since they will book the profit. Its just one of the possibility.