Do they really? I often encounter this statement. And i have no idea as to why. This past few days, bitcoin is on the rise and most certainly than not altcoin's price surely follows. I am not saying this is bad but altcoins have very little in common with bitcoin. And they are certainly not carbon copies of bitcoin either. Why the heck is their price so closely connected despite being so fundamentally different?
It is because atcoins are totally dependent in bitcoin even Ethereum. The price of altcoin are usually base on Bitcoin's price and not in fiat currency. That is why when Bitcoin rise and fall, altcoins will always be affected.