Coinmarketcap data shows that the Altcoin Season Index is currently at 33, up 2 points from yesterday (which was 31). This index indicates that in the past 90 days, about 33 of the top 100 cryptocurrencies by market cap have outperformed Bitcoin, and the market is still in a Bitcoin-dominated season. It's reported that CMC's Cryptocurrency Altcoin Season Index is a real-time indicator used to judge whether the current cryptocurrency market is in an altcoin-dominated season. The index is based on the performance of the top 100 altcoins relative to Bitcoin over the past 90 days.