$BTC

Most altcoins rise and fall with Bitcoin because:

1. **Market Leader** – Bitcoin dominates crypto sentiment; when it moves, others follow.

2. **High Correlation** – Traders treat crypto as a risk asset class, so trends often align.

3. **Liquidity & Trading Pairs** – Many alts are traded against BTC, so Bitcoin’s swings directly impact their value.

4. **Shared Sentiment** – News/regulation affecting Bitcoin usually impacts the entire market.

*Exceptions happen when altcoins have unique news or developments.*