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Altcoin Season Index Rises to 42, Up 8 Points From Previous Day

Published September 19, 2026 1:37 AM · 0 views $BTC
Altcoin Season Index Rises to 42, Up 8 Points From Previous Day

The Altcoin Season Index, as tracked by cryptocurrency data platform CoinMarketCap, has risen by 8 points to 42 from the previous day. The index measures the price movement comparison between the top 100 cryptocurrencies (excluding stablecoins and wrapped coins) and Bitcoin over a 90-day period. An 'Altcoin Season' is defined when 75% of the top 100 coins have outperformed Bitcoin in terms of price growth during that timeframe, while the opposite scenario indicates a 'Bitcoin Season.' The index approaches 100 as the market shifts toward altcoin dominance.

Korean Source

This article is an English localization of a Korean-language crypto news report. Original headline: 알트코인 시즌 지수 42...전일比 8포인트1↑