Most people believe that the price of altcoins' is determined by the price of bitcoin and that they tend to follow it's market movements.
I partially disagree with this. I have studied prices of coins and tokens on CMC and the fluctuations of each currency seems to be unique and independent of any other digital currency. Some show strong pumps when BTC goes down and some heavy dumps when BTC is rising.
Undoubtedly, there are market forces and factors which affects most currencies, this is not influenced by bitcoins price, it rather controls bitcoins' price as well as others.
So when trading or investing, make sure you treat each currency differently as they have different utilities.
In my own suggestion i think i will say this people are right when they say the price of cryptocurrency is been control by bitcoin, because i have really come to understand something about altcoin price that when ever ethereum is going down other coin join him too and what is the may reason the ethereum price is down mainly because bitcoin price is down so with this little view of mine i think i agree with the body that say bitcoin regulate crypt market.