i can understand when price of one crypto increase or decrease , but why when it's bear or bull market all cryptos (or 90% of them ) goes up and down and follow a general trend ??
is poeple invest +- equally in different cryptos or just because market follow the top 3 cryto and mainly bitcoin ??
Actually it happens this year, if you watching this in some previous years, the conditions are different from now if Bitcoin decrease usually some altcoin will rise and happen inverse. Many people interest in buying Bitcoin rather that other coins such as Eth, BCH, etc. when bear coming those coins was converting into fiat.