Altcoin Season Index Crashes To Low 17 As Bitcoin Price Struggles, What This Means

The cryptocurrency market has experienced a significant shift in profitability after the Bitcoin price decline. Altcoins have suffered substantial losses, with many far below their all-time high valuations. Expectations for an altcoin season have diminished significantly, reflected in the performance of the Altcoin Season Index. This index, measuring altcoin performance against Bitcoin, has fallen to historically low levels in 2025. The index's value below 20 indicates that only a small portion of top altcoins are outperforming Bitcoin. Ethereum, a leading altcoin, is also underperforming, further contributing to the negative trend. An altcoin season is signaled when the index reaches a score of 75 or higher. This would indicate the majority of altcoins are outperforming Bitcoin over a 90-day period. Currently, altcoins are believed to be in a bear market according to the index’s low score. A score approaching 100 could indicate the altcoin market is nearing a peak.