The market rose greatly towards the end of 2017 mostly as a result of massive awareness and the 'get rich quick syndrome' that plagued the market at that time. The massive dump was as a result of FUD and Government massive crackdown on Cryptos as it would have had bad impact on economies if it kept growing at that rate.
More traders compared to investors are now into crypto and this is preventing the market from going back up.
Overall I'm still optimistic BTC will go up before the end of 2018 but I don't think it will be as massive as that of last year.