If we look at data from Coinmarketcap.com at this time, it can be seen that the decline by decline is significant. At present the total market capitalization of all crypto currencies is $ 180 billion, and the psychological limit is $ 150 billion.
The current price of Bitcoin is $ 5,500, and maybe we will see a level of $ 4,500 this fall.
How about altcoins?, ofcourse they will go down too, since all altcoins reflect to BTC.