The growth momentum of altcoins weakens as the market shifts to Bitcoin season

The cryptocurrency market is entering a consolidation phase, with a series of indicators showing a shift back towards Bitcoin dominance, amid a clear weakening of altcoin performance.

Altcoin Season Index continues to retreat deeper into Bitcoin territory

According to data from CoinMarketCap, the Altcoin Season Index is currently at 29 out of 100, confirming that the market is strongly leaning towards “Bitcoin season.” Compared to 31 the previous day, this index has decreased and remains below the neutral threshold of 50 – which typically reflects a balance between Bitcoin and altcoin performance.

History shows that when this index falls below 25–30, fewer than a quarter of the top altcoins outperform Bitcoin over a 90-day period. This indicates that capital inflow into altcoins is stagnating, rather than expanding as in previous phases.

Source: CoinMarketCap Notably, the current level represents a significant correction from the peak of 78 in September 2025 – when altcoins surged collectively. Since then, the growth momentum has gradually faded, reflecting a prolonged “cooling off” cycle rather than just a short-term correction.

Market sentiment shifts to caution as fear returns

The Cryptocurrency Fear & Greed Index is currently at 34, placing the market firmly in “Fear” territory. This is a notable decline from the Neutral [50] level last week, reflecting increasing risk aversion among investors.

Source: CoinMarketCap Although overall sentiment has weakened, this level has not yet reached extreme fear – which is often associated with heavy sell-offs. Instead, the market is experiencing a controlled risk reduction phase, as leveraged and speculative investments, especially in altcoins, are gradually being scaled back.

Capital flows prioritize Bitcoin, altcoins lose appeal

The combination of negative sentiment and a low Altcoin Season Index indicates that capital is trending towards consolidation rather than exiting the market entirely. Bitcoin continues to attract funds as a safe haven, while altcoins struggle to regain upward momentum.

Periods when the Altcoin Season Index is below 30 are typically characterized by strong divergence – only select tokens can grow due to intrinsic factors, while broad altcoin breakout trends are usually limited.

Market structure indicates accumulation, not capitulation

Importantly, current data do not reflect large-scale capitulation. The market is entering an accumulation phase, with cautious sentiment and limited investor confidence.

Unless overall sentiment improves or Bitcoin establishes a clearer trend, current indicators suggest the market will continue to be led by Bitcoin, while altcoins face many short-term challenges.