Analyst Joao Wedson has highlighted that the Altcoin Season Index is continuing to rise despite broad market weakness, with 24 out of 55 tracked altcoins outperforming Bitcoin over the last 60 days, and the Alphractal chart showing the index climbing toward the altcoin season threshold from a deep Bitcoin season trough that characterized most of late 2025. What the Chart Is Showing The Altcoin Season Index vs. Bitcoin chart from Alphractal tracks what percentage of the top 55 altcoins have outperformed Bitcoin over a rolling 60-day period. The pink shaded zone at the top represents altcoin season, defined as when 75% or more of altcoins are outperforming Bitcoin
source: https://www.ethnews.com/the-altcoin-season-index-is-rising-here-is-what-the-data-actually-shows/