the market has been bullish for quite some time with many coins having more than 10X. I remember the marketcap as at last year was about 20 billion with BTC enjoying more than 60%. And then comes the ride with ETH going from at around $6 last year to $390 ATH. And stratis for example going from 0.005 to $10. We cannot logically expect the market to continue such bullish trend. The market will retrace. secondly, there is alot of uncertainty especially with BTC, Segwitx and potential hardfork, some investors would naturally want to peg their money with tether or cash out. So at this moment, i suggest the best thing to do is to divide your risk. Cash out at 50% of your investment and keep the remaining. The crypto market can be highly volatile and no one knows how far this trend reversal will take.