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 ...
It's not bitcoin's fault mate, the market has just been this way in the recent years and it's hard to see change from this, because most altcoins are so low priced right now it'll take a miracle to breathe new life in them.
It's no longer altcoins following the price of Bitcoin like 2 year ago, they are way more independent and it's on the companies behind them to make sure they succeed.