CoinGlass Altcoin Season Index Rises to 58 After June 4 Spike to 64

CoinGlass’s Altcoin Season Index rose to 58 after a June 4 spike to 64, signaling potential capital rotation from Bitcoin into altcoins. According to BeInCrypto, the index measures how many top market-cap cryptocurrencies beat Bitcoin over a trailing 90-day window, with readings above 75 indicating a confirmed altcoin season. Bitcoin dominance remains elevated at 57%, per CoinGecko, while CryptoRank data show BTC dominance fell from 58.12% to roughly 54% in early July and is now 56.3%. Over the same period, altcoins excluding Bitcoin, Ethereum and stablecoins grew from 19.39% to 24.68% market share.