it is noted last eight to nine months that bitcoin is not stable.bitcoins movement is very uncertain due to this altcoin are very badly affected.So it is necessary to predict movement of bitcoin to avoid unnecessary loss in altcoins.
It is note able that almost all altcoins are now 80%to 90% negative from their all time high due to this happen only bitcoin uncertainty.
Now this is not clear what happen to next on bitcoin near future because bitcions dominance is increasing and altcoin crasing.So becareful if you holding any atcons for long term investment ...
At the first place we all know that bitcoin is very volatile that's why you can see the changing price in the market. There is nothing worry to hold altcoins especially if you hold good altcoin just like ripple, ethereum and binance coin. Even bitcoin have strong dominance there still a future for other cryptocurrencies. Just do not panic if you hold altcoins but make you invested in top rank altcoins.