Sometimes we see When the BTC High then Alts move slightly. So, what's the correlation of Alts with BTC?
As you can see from the market history, Altcoin are always followed to Btc movement, there's a rare situation that one of the ALTS made his own moves, it is scarce, but all of the ALTS have their own movements, and those movements are always rely on Bitcoin. That's how it was work.
and no one can deny that fact, actually it is more to call as reality right?
though they are calling 2018 as Altcoin year yet everything is triggered when Bitcoin start up the climb in 2017 and that only followed that so called 2018 altcoins season.
If i were to decide ? i would rather invest in bitcoin first and then sell at high then Buy altcoins because for sure they will bring me another profit.