The recorded market-breadth cycle
Altcoin Season Index History
See when broad altcoin leadership appeared, how long each regime persisted, and where the index sits inside its recorded range.
Get an alert when the index crosses a level95 observations · July 14, 2026 to October 16, 2026 · Summary statistics use the confirmed 90-day index.
Daily observations
The Index Record
Bitcoin Season ≤25
Transition 26–74
Altcoin Season ≥75
Historical snapshots accumulate daily from this deployment.
View recent values as a table
| Date | Index value |
|---|---|
| Oct 5, 2026 | 70 |
| Oct 6, 2026 | 73 |
| Oct 7, 2026 | 71 |
| Oct 8, 2026 | 68 |
| Oct 9, 2026 | 56 |
| Oct 10, 2026 | 59 |
| Oct 11, 2026 | 73 |
| Oct 12, 2026 | 68 |
| Oct 13, 2026 | 59 |
| Oct 14, 2026 | 56 |
| Oct 15, 2026 | 68 |
| Oct 16, 2026 | 56 |
What the record says
Most observations sit between the extremes
The index recorded Altcoin Season on 1 observations, Bitcoin Season on 3, and a mixed transition regime on 91.
Altcoin Season1%
Transition96%
Bitcoin Season3%
Most recent first
Regime Changes
| Regime | Recorded period | Observed range | Snapshots |
|---|---|---|---|
| Transition Latest | Sep 28, 2026 – Oct 16, 2026 | 54–73 | 19 |
| Altcoin Season | Sep 27, 2026 | 78 | 1 |
| Transition | Sep 3, 2026 – Sep 26, 2026 | 27–71 | 24 |
| Bitcoin Season | Aug 31, 2026 – Sep 2, 2026 | 24 | 3 |
| Transition | Jul 14, 2026 – Aug 30, 2026 | 32–74 | 48 |
How to interpret the history
One score, several time horizons
The primary cycle signal is the 90-day index: the share of eligible leading altcoins that beat Bitcoin over the same period. Scores at or above 75 indicate broad altcoin leadership; scores at or below 25 indicate Bitcoin leadership.
Daily snapshots preserve the eligible universe and calculated values as they were recorded. That avoids rewriting history when market-cap rankings later change.