Top 100 Altcoins vs Bitcoin
Every large altcoin's return minus Bitcoin's return over the same period. Positive bars beat Bitcoin, negative bars lagged it.
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See the altcoin season index in the app Crypto market hub
Our method
We take the 100 largest coins by market cap, leave out Bitcoin itself and stablecoins, and subtract Bitcoin's percentage change from each coin's change over the same window. The altcoin season score is simply the share of those coins that did better than Bitcoin, scaled to 0–100. A score of 75 or more is commonly read as "altcoin season", 25 or less as "Bitcoin season".
Relative strength is useful context, not a forecast. A coin that beat Bitcoin last month can reverse quickly, and in a falling market "beating Bitcoin" can still mean losing money. Check the Bitcoin dominance chart to see the bigger trend.
Sources: CoinGecko free API (our 15-minute market snapshot). Loaded in your browser; if a source is unreachable the page says so instead of showing old or made-up numbers.
Frequently asked questions
What is altcoin season?
A period when most large altcoins rise faster than Bitcoin. Many traders define it as at least 75% of the top coins beating Bitcoin over a set window.
Why are stablecoins excluded?
Stablecoins track the dollar, so comparing them with Bitcoin says nothing about altcoin strength.
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Not financial advice. This page shows third-party market data and our own calculations for information and education only. Data can be delayed, incomplete or wrong. Crypto is highly volatile and you can lose all of the money you put in. See our disclaimer.
Page updated 2026-11-07 · Site built 2026-11-08 02:07 UTC