Bitcoin News Today: Altcoin Season Index Rises to 51 as Bitcoin Dominance Dips to 61%

Generated by AI AgentCoin World
Wednesday, Jul 23, 2025 5:34 am ET2min read
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Aime RobotAime Summary

- Binance founder CZ Zhao highlights rising Altcoin Season Index (51/100) as potential "FOMO season" indicator, noting altcoins increasingly outperform Bitcoin.

- Bitcoin's market dominance fell to 61% (lowest since March) amid 23% surge in total crypto cap to $3.8T, driven by Ethereum and meme coins.

- Historical patterns show altcoins often follow Bitcoin-led rallies, but analysts caution current metrics (61% dominance, 51 index) still below traditional bull market thresholds.

- Index methodology excludes stablecoins, tracking top 100 altcoins' price performance to signal market rotation from Bitcoin to broader crypto participation.

Changpeng “CZ” Zhao, founder of Binance, has signaled growing optimism in the cryptocurrency market, noting that CoinMarketCap’s Altcoin Season Index is rising. In a post on X, Zhao wrote, “Not sure how accurate it is, but it is ticking up. FOMO season soon…” [1], referencing the index that measures whether altcoins are outperforming

Bitcoin
over a 90-day period. The index currently stands at 51 out of 100, up from 38 last week and 16 a month ago, reflecting a shift in market dynamics [2]. A reading above 75 is considered an official “Altcoin Season,” where at least 75 of the top 100 altcoins outperform Bitcoin [3].

The index’s upward trajectory aligns with broader market trends. Bitcoin’s dominance has dropped to 61%, its lowest since March and the sharpest decline since June 2022, according to TradingView [4]. This decline coincides with a 23% surge in total crypto market capitalization over three weeks, reaching $3.8 trillion [5].

Ethereum
and meme coins like BONK and FLOKI have led altcoin gains, with Ethereum up 110% over 90 days and BONK surging 148.7% [6]. Lower-cap projects such as PENGU and M have also seen over 500% gains [7].

Historical patterns suggest a typical market cycle: Bitcoin initially drives liquidity and sentiment, followed by a shift to altcoins fueled by speculative narratives and protocol innovation [8]. For example, in 2021, altcoins posted 170% gains while Bitcoin rose just 2% during the same period [9]. However, some analysts remain cautious. X user Henry noted that while retail investors are declaring an altcoin rally, key metrics like Bitcoin dominance (61%) and the Altcoin Season Index (51) have yet to meet traditional bull market indicators [10].

The Altcoin Season Index’s methodology excludes stablecoins and wrapped tokens, focusing instead on price performance among the top 100 coins on CoinMarketCap [11]. This metric aims to help investors assess whether the market is transitioning from Bitcoin-led growth to broader altcoin participation. Zhao’s commentary adds to a growing narrative of market rotation, though traders are advised to monitor Bitcoin’s dominance and technical indicators for confirmation of a sustained altcoin-driven phase [12].

Sources:

[1] [Billionaire Binance Founder Says ‘FOMO Season Soon’ as Altcoin Index Starts Ticking Up](https://cryptonews.com/news/billionaire-binance-founder-says-fomo-season-soon-as-altcoin-index-starts-ticking-up/)

[2] [Billionaire Binance Founder Says ‘FOMO Season Soon’ as Altcoin Index Starts Ticking Up](https://cryptonews.com/news/billionaire-binance-founder-says-fomo-season-soon-as-altcoin-index-starts-ticking-up/)

[3] [Billionaire Binance Founder Says ‘FOMO Season Soon’ as Altcoin Index Starts Ticking Up](https://cryptonews.com/news/billionaire-binance-founder-says-fomo-season-soon-as-altcoin-index-starts-ticking-up/)

[4] [Billionaire Binance Founder Says ‘FOMO Season Soon’ as Altcoin Index Starts Ticking Up](https://cryptonews.com/news/billionaire-binance-founder-says-fomo-season-soon-as-altcoin-index-starts-ticking-up/)

[5] [Billionaire Binance Founder Says ‘FOMO Season Soon’ as Altcoin Index Starts Ticking Up](https://cryptonews.com/news/billionaire-binance-founder-says-fomo-season-soon-as-altcoin-index-starts-ticking-up/)

[6] [Billionaire Binance Founder Says ‘FOMO Season Soon’ as Altcoin Index Starts Ticking Up](https://cryptonews.com/news/billionaire-binance-founder-says-fomo-season-soon-as-altcoin-index-starts-ticking-up/)

[7] [Billionaire Binance Founder Says ‘FOMO Season Soon’ as Altcoin Index Starts Ticking Up](https://cryptonews.com/news/billionaire-binance-founder-says-fomo-season-soon-as-altcoin-index-starts-ticking-up/)

[8] [Billionaire Binance Founder Says ‘FOMO Season Soon’ as Altcoin Index Starts Ticking Up](https://cryptonews.com/news/billionaire-binance-founder-says-fomo-season-soon-as-altcoin-index-starts-ticking-up/)

[9] [Billionaire Binance Founder Says ‘FOMO Season Soon’ as Altcoin Index Starts Ticking Up](https://cryptonews.com/news/billionaire-binance-founder-says-fomo-season-soon-as-altcoin-index-starts-ticking-up/)

[10] [Billionaire Binance Founder Says ‘FOMO Season Soon’ as Altcoin Index Starts Ticking Up](https://cryptonews.com/news/billionaire-binance-founder-says-fomo-season-soon-as-altcoin-index-starts-ticking-up/)

[11] [Billionaire Binance Founder Says ‘FOMO Season Soon’ as Altcoin Index Starts Ticking Up](https://cryptonews.com/news/billionaire-binance-founder-says-fomo-season-soon-as-altcoin-index-starts-ticking-up/)

[12] [Billionaire Binance Founder Says ‘FOMO Season Soon’ as Altcoin Index Starts Ticking Up](https://cryptonews.com/news/billionaire-binance-founder-says-fomo-season-soon-as-altcoin-index-starts-ticking-up/)