Altcoins rally on thin trading as bitcoin holds below $83,500

Crypto Insight Summary: The CoinDesk 80 has risen around 3% in 24 hours, more than double the CoinDesk 5, while spot bitcoin ETFs lost $681 million last week. Crypto Insight Analysis: Direction: Bullish Altcoins Impact: Minor Impact Horizon: Short-term (1-3 days) Reasoning: Altcoins outperform BTC on low volume, but ETF outflows signal broader market uncertainty.