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.