I think that it was really strange that in January when BTC went down all big cryptocurrency exchanges closed registration for new members and they opened it only when the price was low. Then at spring when the downtrend was broken(7000$) there were many news that cryptocurrency now will go up! But whales just made big shorts at 10 000 $and all the news said that cryptocurrency won't go up for along time and market went down to current position.
I believe that you can see that the crypto market with very low capitalization is only over $ 200 billion and is not controlled by any country, so the bitcoin and altcoin prices are being manipulated. is very easy to understand. So this is a very high risk market, you should only short-term investment and trading day, should not long-term investment.