The Altcoin Season Index, published by CoinMarketCap, stands at 49. That's the midpoint. Neither Bitcoin nor altcoins are pulling ahead.
The index measures performance across the top 50 cryptocurrencies by market cap over a rolling 90-day window. A reading below 50 signals Bitcoin dominance. Above 50 means altcoins are outpacing Bitcoin. At exactly 49, the market is flat between them.
Right now, Bitcoin holds the number-one market-cap ranking at $61,179 per market data at publication. The neutral index reading reflects no large-cap altcoin breakout against that baseline over the recent quarter.
A score this close to center suggests traders lack conviction about which asset class will lead next. Historically, moves away from 50 tend to signal regime shifts, but sustained pressure to shift the needle requires either a Bitcoin rally strong enough to pull capital from altcoins, or a coordinated alt bounce that outpaces BTC returns. At 49, neither is happening yet.