Altcoin Season Index stands at 21

CoinMarketCap's Altcoin Season Index is currently at 21. The index compares the price performance of the top 100 cryptocurrencies, excluding stablecoins and wrapped tokens, against Bitcoin over the last 90 days. An "altcoin season" is indicated when 75% of these top 100 coins outperform Bitcoin over the 90-day period. Conversely, a "Bitcoin season" is declared when Bitcoin outperforms the majority of top altcoins. A score closer to 100 signifies a stronger altcoin season.