On May 23, according to Coinmarketcap data, the Altcoin Season Index is currently at 27, having previously dropped to 22 on May 17. This index indicates that in the past 90 days, about 27 projects among the top 100 cryptocurrencies by market capitalization have outperformed Bitcoin. Note: The CMC Altcoin Season Index is a real-time indicator used to determine whether the current cryptocurrency market is in an altcoin-dominated season. This index is based on the performance of the top 100 altcoins relative to Bitcoin over the past 90 days.