cryptocurrency copytrade

Since 17 April I observe that some coin is begin down but today is so shocking, my balance cryptocurrency lose more than 18% what's happen ?

What are the best professional cryptocurrency copy trading platforms? - I got some good advices from BHW users on my another thread. So I'm gonna hold some money with invest in bitcoin. - And I also want to invest some money in cryptocurrency trading. I don;t know anything about cryptocurrency...