I think this might just be a pretty general trend of each year. People try to cash out there deposits for meeting up their expenses this year. FUD is always a great cause of bitcoin falling down continuously but as you see the stats of past years. One thing which is different this time is that the market dominance has fallen upto a great extent this time. Generally in all previous years even with the fall in price we never saw bitcoin's market dominance getting affected. This time it has come down to just 33% and today was yet another correction day for cryptos.