The canonical Altcoin Season Index by Blockchain Center has been hovering in the 31–35 range since the end of last week. This is the lowest level since July and less than half of the 75-point threshold that signals an “altcoin season,” when most major tokens outperform Bitcoin. On September 11, the index reached 78, its highest level since December 2024.
According to the methodology, an altcoin season is confirmed when at least 75% of the top 50 cryptocurrencies (excluding stablecoins and derivative tokens) outperform BTC over the past 90 days. This condition is currently not met.
A similar index by CoinMarketCap has dropped even further, to 19 points. $ETH