CoinMarketCap’s Altcoin Season Index fell to 38, down three points from the previous day. The index compares the 90-day price performance of Bitcoin with that of the top 100 coins by market capitalization, excluding stablecoins and wrapped coins. A reading qualifies as altcoin season when at least 75% of those coins outperform Bitcoin; the opposite outcome is considered Bitcoin season. Higher readings, approaching 100, indicate stronger altcoin-season conditions.