Bitcoin has significantly outperformed the top 100 altcoins over the past 90 days, according to the CoinMarketCap Altcoin Season Index. The index currently stands at 16, deep in Bitcoin season territory and far from the 75 threshold that would indicate an altcoin season. This metric confirms what many traders have observed: capital is concentrating in Bitcoin while altcoins struggle to keep pace.Bitcoin has significantly outperformed the top 100 altcoins over the past 90 days, according to the CoinMarketCap Altcoin Season Index. The index currently stands at 16, deep in Bitcoin season territory and far from the 75 threshold that would indicate an altcoin season. This metric confirms what many traders have observed: capital is concentrating in Bitcoin while altcoins struggle to keep pace.

Bitcoin Dominates Market as Altcoin Season Index Drops to 16

2025/12/19 10:56
News Brief
Bitcoin has significantly outperformed the top 100 altcoins over the past 90 days, according to the CoinMarketCap Altcoin Season Index. The index currently stands at 16, deep in Bitcoin season territory and far from the 75 threshold that would indicate an altcoin season. This metric confirms what many traders have observed: capital is concentrating in Bitcoin while altcoins struggle to keep pace.

BTC outperforms top 100 altcoins over 90 days, signaling strong Bitcoin season

Bitcoin Takes the Lead

Bitcoin has significantly outperformed the top 100 altcoins over the past 90 days, according to the CoinMarketCap Altcoin Season Index. The index currently stands at 16, deep in Bitcoin season territory and far from the 75 threshold that would indicate an altcoin season.

This metric confirms what many traders have observed: capital is concentrating in Bitcoin while altcoins struggle to keep pace.

Understanding the Altcoin Season Index

The CoinMarketCap Altcoin Season Index measures the performance of the top 100 altcoins relative to Bitcoin over a 90-day period. When 75% or more of these altcoins outperform Bitcoin, the index signals altcoin season. Conversely, readings below 25 indicate Bitcoin season.

At 16, the current reading represents one of the more extreme Bitcoin-dominant periods in recent market history. This suggests investors are favoring the relative safety and liquidity of Bitcoin over higher-risk altcoin bets.

Why Bitcoin Is Winning

Several factors contribute to Bitcoin's current dominance. Institutional investors accessing crypto through spot ETFs predominantly choose Bitcoin, channeling significant capital into BTC rather than altcoins. Macroeconomic uncertainty also tends to benefit Bitcoin as the most established digital asset.

Additionally, Bitcoin's clear regulatory status compared to many altcoins—some of which face securities classification concerns—makes it a more comfortable allocation for risk-averse capital.

Implications for Altcoin Investors

The data presents a challenging environment for altcoin holders. Historically, altcoin seasons have followed periods of Bitcoin consolidation, as profits rotate into smaller-cap assets seeking higher returns.

However, timing such rotations remains difficult. Some analysts suggest altcoin season typically emerges after Bitcoin establishes new highs and enters a consolidation phase, allowing speculative capital to flow down the risk curve.

For now, Bitcoin maintains its grip on market momentum, and the index suggests this trend may continue near-term.

Market Opportunity
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