Crypto Definitions
What Is Altcoin Season in Crypto and How Do You Spot It?
Key points
- Altcoin season means most large altcoins are beating Bitcoin over a set period.
- Falling Bitcoin dominance is a common sign, but not proof on its own.
- In past cycles altcoin seasons have tended to arrive late and end quickly.
- A written profit taking plan matters more than calling the exact start.
How is altcoin season measured?
Some data sites publish an altcoin season index, which counts how many of the top coins have outperformed Bitcoin over a recent window, often 90 days. When most of them have, the index calls it altcoin season. Methods differ between sites, so treat any single reading as a rough guide.
Altcoin season vs Bitcoin season
| Signal | Bitcoin season | Altcoin season |
|---|---|---|
| Which leads | Bitcoin outperforms most altcoins | Most large altcoins outperform Bitcoin |
| Bitcoin dominance | Usually rising | Usually falling |
| Typical timing | Earlier in a cycle and in downturns | Later in a bull market in past cycles |
| Main risk | Missing altcoin gains | Buying late and holding through the drop |
Why altcoin season has tended to come late
In past cycles, new money has often flowed into Bitcoin first. As Bitcoin’s price rose, some investors moved profits into larger altcoins and then into smaller ones, chasing bigger moves. That rotation is why altcoin seasons have tended to appear late in a bull market and why they have often been short.
Why compare each altcoin with Bitcoin
Ben Simpson’s simplest altcoin check is to chart a coin against Bitcoin over the same period. If an altcoin is not beating Bitcoin, you are taking extra risk without extra reward. Our guide to Bitcoin vs altcoins shows how investors decide the split in their own portfolio.
Limits of the idea
- No index can tell you when altcoin season will start or end.
- Stablecoin flows can move Bitcoin dominance without any altcoin buying.
- Many altcoins never recover their previous highs after a cycle ends.
How Collective Shift approaches altcoin season
In the 5-step SHIFT Method, Bitcoin is the core and altcoins are a smaller, filtered slice. Profit targets are written down before a strong market arrives, which is the idea behind a profit ladder. The regular rebalance then checks whether each altcoin still earns its place.
Frequently asked questions
What does altcoin season mean?
It means a period when most large altcoins rise faster than Bitcoin, usually measured over the last 90 days or so.
How do I know if it is altcoin season?
Check an altcoin season index and Bitcoin dominance, then compare your own altcoins against Bitcoin on a chart over the same period.
How long does altcoin season last?
There is no set length. In past cycles these stretches have often been short, sometimes only weeks to a few months.
Should I buy altcoins during altcoin season?
That depends on your own plan and situation. Many investors find it more useful to set profit taking rules before altcoin season than to chase it once it starts.
Related guides
- Bitcoin vs altcoins: how to split your portfolio
- How to build a crypto exit strategy with a profit ladder
- The Bitcoin halving and the crypto market cycle
- How to rebalance a crypto portfolio
- Crypto glossary
This guide is general education only and is not personal financial advice. Collective Shift Pty Ltd, ABN 78 650 977 325.
Written by Ben Simpson, Founder of Collective Shift, and reviewed by Matt Willemsen, Director of Research. Published 4 November 2026. Updated 4 November 2026.