Altcoin Season Indicator

The Altcoin Season Index is a metric that measures whether altcoins are outperforming Bitcoin in the crypto market. It helps determine whether the market is entering an “Altcoin Season.”

Altcoin Season refers to a period when most altcoins show greater price gains than Bitcoin, indicating that market capital is flowing from BTC into altcoins.

The index typically analyzes the performance of the top 50 or top 100 altcoins over the past 90 days, counting how many have outperformed Bitcoin. Formula: Number of altcoins outperforming BTC ÷ Total number = Altcoin Season Index (%).

The thresholds: - > 75%: Altcoin Season - 25%–75%: Neutral Market - < 25%: Bitcoin Season

The index helps track capital rotation: an increasing index means funds are moving from BTC to altcoins (higher risk appetite), while a declining index suggests money returning to BTC.