May 2025 Still Bitcoin Season With Altcoin Index Failing to Flip

• Altcoin Season Index score of 24 confirms May 2025 remains a Bitcoin-dominated market cycle
• Bitcoin dominance strengthens as altcoin market cap dips below $1.1T amid capital rotation
• Traders track BTC to altcoin ratio chart for signs of a 2025 altcoin rally breakout trigger

Bitcoin’s tight grip on the crypto market continues, with a key measure confirming an ongoing ‘Bitcoin Season’. The Altcoin Season Index registered just 24 out of 100 as of 00:38 UTC on May 6, according to CoinMarketCap data. 

The reading falls below the level required to signal the beginning of an altcoin season, where a broad range of alternative cryptocurrencies outperform Bitcoin.

Index Score Confirms Bitcoin Season

The Altcoin Season Index offers market insight by tracking the 90-day performance of the top 100 cryptocurrencies (excluding stablecoins and wrapped tokens) compared to Bitcoin. 

A score hitting 75 or higher indicates an ‘Altcoin Season,’ where altcoins broadly outperform Bitcoin. A score of 25 or lower confirms a ‘Bitcoin Season.’ The current reading of 24 clearly places the market in Bitcoin Season territory.

Altcoins Still Lag Despite …

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