Guide
Altcoin Season vs Bitcoin Season
Compare Bitcoin-led and altcoin-led market phases using relative strength, dominance, breadth, and narrative participation.
Bitcoin Season and Altcoin Season describe where relative strength is concentrated, not whether the whole market is rising or falling.
Bitcoin SeasonIndex 0–25
Most leading altcoins underperform BTC. Dominance often rises and market leadership is concentrated.
TransitionIndex 26–74
Leadership is mixed. Individual sectors may rally without broad market participation.
Altcoin SeasonIndex 75–100
A broad majority of leading altcoins outperform BTC over the measured period.
Why the transition zone matters
Most markets spend substantial time between the extremes. Comparing 7-day and 90-day breadth can reveal whether a transition is strengthening or fading.