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.
This is the reality of the market. Each and every price movement is connected with the altcoins. Whenever the bitcoin market turns bullish, the altcoin rally continue following bitcoin. At some point the bullish movement of bitcoin gets slowed down and the altcoins move good. This is termed to be the altcoin season. For now we haven't encountered any such in recent months. So, the next altcoin season will bring good bullish move with altcoins.