The share of the top 100 cryptoassets beating Bitcoin over the past 90 days. Above 75 is Altcoin Season; below 25 is Bitcoin Season.
| # | Asset | 90d Change | vs BTC | Status |
|---|---|---|---|---|
| Loading… | ||||
The Altcoin Season Index measures how many of the top 100 cryptoassets have outperformed Bitcoin over the past 90 days. A high reading means money is chasing alts; a low reading means Bitcoin is leading and alts are lagging.
Most large-caps are losing to Bitcoin. Capital is concentrated in BTC and altcoins are bleeding against it - often an accumulation phase.
No clear leader. Some alts beat Bitcoin, some don't - the market hasn't picked a side.
Most large-caps are beating Bitcoin. Risk appetite is high and money is rotating down the curve into alts - historically the frothier, later stage of a cycle.
It tells you where the action is, not whether to buy. Altcoin Season tends to appear late in a cycle when risk is highest; Bitcoin Season often dominates quieter accumulation phases.
"Altcoin season" describes periods when alternative cryptoassets broadly outperform Bitcoin. This index quantifies it: it counts how many of the top 100 coins beat Bitcoin's return over the past 90 days, expressed as a 0–100 score.
It currently reads -.
We take the top 100 assets by market cap (excluding stablecoins and wrapped tokens), compare each one's 90-day return to Bitcoin's, and score the percentage that came out ahead. 75+ means most majors are beating BTC (Altcoin Season); 25 or below means Bitcoin is leading (Bitcoin Season). Both the live reading and the history chart are computed from real market prices.
It's a fast read on where risk appetite is flowing. Capital tends to rotate from Bitcoin into large-cap alts, then into smaller caps, across a cycle. A rising index signals that rotation is underway; a falling one signals a flight back to Bitcoin.
No. It describes market breadth, not direction or value, and altcoins carry more risk than Bitcoin. Treat it as context alongside your own research. General information only, not financial advice.