Altcoin Season Index Drops to Lowest Since July. What's Happening with Cryptocurrency
The Altcoin Season Index has dropped to its lowest level since July, reaching 33 points on December 15th, according to Blockchain Center. This metric compares the 90-day performance of the top 50 cryptocurrencies (excluding stablecoins and wrapped tokens) against Bitcoin. A reading above 75 indicates an altcoin season, while below 25 signifies a Bitcoin season.
The index briefly entered altcoin season territory for less than two weeks in September, hitting 80 points for the first time in 2025. Since then, it has fallen sharply to 33. Over the past 90 days, ZCash (ZEC) was the top performer with a 686% gain, while most major cryptocurrencies, including Bitcoin (-22%), Ethereum (-29.8%), Solana (-43.9%), and Ton (-50%), posted significant losses.
Bitcoin's market dominance has remained relatively stable, fluctuating between 57.6% and 60.6% over the past three months, and currently stands at 59.13%. Meanwhile, Bitcoin's price is trading around $90,000, down 28.8% from its October high of approximately $126,000. An alternative index from CoinMarketCap, which tracks the top 100 cryptocurrencies, fell to just 19 points.
RBK-crypto12/15 10:52