Above 0.75 is usually called alt season; below 0.25, Bitcoin season. Both thresholds are convention, not a finding.
Scroll or drag to move the time axis · hold shift for the value axis · drag either slider
alt-v1 · share of the day's top 50 alts that beat Bitcoin over the trailing 90 days. Stablecoins and staking derivatives are excluded — a wrapper tracking its underlying is not an alt outperforming.
Above 0.75 is usually called alt season; below 0.25, Bitcoin season. Both thresholds are convention, not a finding.
Every value plotted for a past date could have been computed on that date. Normalised series expand their window rather than scaling against the full history, so nothing here is drawn using information that did not exist yet — which is also why the early years of a normalised series are dropped rather than shown against a range of one.