CoinMarketCap's market sentiment indicators presented a mixed but largely Bitcoin-favored picture on September 1, 2026. The Altcoin Season Index rose two points to 28 from 26 the previous day, while the Crypto Fear and Greed Index remained steady at 75 in the greed zone.
The Altcoin Season Index compares Bitcoin's performance against the top 100 cryptocurrencies by market capitalization, excluding stablecoins and wrapped tokens, over a 90-day window. An official altcoin season begins only when 75% of those top 100 assets outperform Bitcoin. At 28, the gauge remains closer to zero, indicating that Bitcoin is still outperforming most altcoins. The slight increase suggests only a minority of altcoins have beaten Bitcoin over the past three months, and no strong catalyst such as DeFi innovation, network upgrades, or meme coin mania has shifted momentum.
The Crypto Fear and Greed Index held at 75. The index aggregates price movement of the top 10 cryptocurrencies, market volatility, derivatives indicators including the put/call ratio, stablecoin supply ratio, and CoinMarketCap search data. Readings from 0 to 100 map market emotion from extreme fear to extreme greed; a reading of 75 shows persistent optimism and higher risk appetite. While this can fuel buying pressure, it also raises the risk of sharp pullbacks if sentiment shifts. Analysts treat it as a caution signal for short-term traders.
Together, the readings indicate a market still led by Bitcoin, supported by broad bullish sentiment but lacking the broad altcoin outperformance needed to declare an altcoin season. The index is a lagging indicator, so traders should use it alongside other risk-management tools rather than as a standalone prediction.
