#ALTCOINUPDATE
The Altcoin Season Index has declined to 19 as of today, December 7, 2025, a significant drop from a peak of 78 in September 2025. This low reading indicates that the market is currently in a "Bitcoin Season," where the majority of altcoins are underperforming relative to Bitcoin.
Current Index and Performance Metrics
The Altcoin Season Index measures whether 75% of the top 100 cryptocurrencies (by market capitalization) have outperformed Bitcoin over the past 90 days. A reading below 25 generally indicates a Bitcoin season, while a figure above 75 suggests an altcoin season.
ā¢ Current Index Value: 19
ā¢ Previous Week's Average: 25
ā¢ Peak in September 2025: 78
This means that over the last 90 days, only about 19 of the top 100 altcoins have outperformed Bitcoin.
