Altseason Index Holds At 37 As August Values Mirror Post-Halving Trends

Altcoin Season Index has dropped to 37, indicating a shift away from altcoin dominance.

August remains historically bullish during post-halving years like 2013, 2017, and 2021.

Ethereum continues to consolidate vs Bitcoin, with institutions gradually increasing ETH exposure.

The altcoin season index has dropped sharply to 37, raising concerns among investors about market conditions for digital assets beyond Bitcoin. Historically, levels below 25 have indicated Bitcoin season dominance, while a value above 75 has marked a definitive altcoin season. Although the index is now closer to Bitcoin territory, broader market data suggests no structural breakdown across key metrics

Current price action across altcoins remains within long-term uptrend formations, and the overall sentiment may shift again depending on how August develops. Market watchers have now turned to historical performance, altcoin market cap strength, and ETH/BTC activity for more clarity.

August’s Post-Halving Pattern Hints at Potential Late-Month Rally

August performance during past post-halving years shows consistent bullish outcomes. In 2013, 2017, and 2021, August recorded strong returns after slow starts. So far in 2025, August has shown minor red days, though no major breakdown has occurred. The current market setup differs little from previous cycles, where slow beginnings gave way to late-month strength.

Source: (X)

This pattern is notable, as it reflects recurring behavior in post-halving environments. Despite fears surrounding bearish momentum, historical context provides insight into the potential for later trend continuation. If the current structure holds, a delayed bullish move remains possible.

Altcoin Market Cap Holds Critical Structure

The altcoin market cap remains just under the $1 trillion mark. Even with recent declines, it has maintained a consistent series of higher highs and higher lows. A recent dip briefly tested range support but rebounded strongly, validating the uptrend. The broader bullish structure has not been invalidated.

Importantly, the rising trendline remains intact, and no indicators suggest a reversal below $800 billion. Until that threshold is breached, the structural outlook for altcoins remains unchanged. Investors continue monitoring this range as a critical marker for overall altcoin strength.

Ethereum Consolidates vs Bitcoin Amid Institutional Shifts

The ETH/BTC ratio continues to move sideways inside a stable accumulation range. No breakdown or major divergence has occurred, keeping the structure neutral. Ethereum’s stability relative to Bitcoin has drawn attention from institutional entities.

This week, BlackRock reportedly adjusted exposure—adding Ethereum while reducing Bitcoin. This development suggests a potential liquidity shift between the two assets. The ETH/BTC range remains key in identifying future capital rotations.