On March 23, data from Coinmarketcap showed that the Altcoin Season Index is currently at 21. This index indicates that in the past 90 days, about 21 out of the top 100 cryptocurrencies by market cap have outperformed Bitcoin, suggesting that 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 determine 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.