Glassnode
Glassnode's Altcoin Cycle Signal printed 81.25 in its latest daily update, pushing the metric back into Altcoin Season territory. The index is constructed from price data across the top 250 altcoins by market cap, ex-stablecoins, and is designed to be largely agnostic to which specific alts an investor holds. A reading above the neutral midline means the basket is likely to outperform bitcoin; below it, the dynamic inverts.
Why it matters
The signal had spent an extended stretch in Bitcoin Season before this reset, and the flip is the first broad-basket confirmation that rotation is actually underway rather than concentrated in a handful of large-cap names. Glassnode updates the metric daily at 10:15 UTC with the prior day's print, so the level is current, not lagging. Crucially, the methodology is basket-based, not market-cap-weighted by the same coins the majors traders watch, so a high reading is a statement about the long tail catching a bid, not just ETH or SOL leading.
Market impact
A print in the low-80s sits comfortably inside Altcoin Season but not at the extremes that historically marked blow-off phases late in prior cycles. Traders who frame rotation around this index will treat a sustained move above 75 as the structural green light, with the next reference points being the 90+ zone that has historically preceded profit-taking in alts and a return of flow back into $BTC. The level to watch is whether the index can hold the mid-70s on any BTC drawdown, which is what separates a rotation regime from a single-week squeeze.
Source: [Title: Bitcoin Altcoin Cycle Signal Chart - Glassnode](https://studio.glassnode.com/charts/signals.AltcoinIndex)
Frequently asked questions
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What is Glassnode's Altcoin Cycle Signal?
It is a daily metric built from price data of the top 250 altcoins by market cap, excluding stablecoins, that measures whether the market is in Bitcoin Season (BTC likely to outperform) or Altcoin Season (the alt basket likely to outperform).
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What does the current 81.25 reading mean?
The signal has flipped back into Altcoin Season territory. Readings above the neutral midline indicate the altcoin basket is likely to outperform BTC, and 81.25 sits comfortably inside that band without reaching the 90+ extremes seen late in prior cycles.
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How is the Altcoin Cycle Signal different from BTC dominance?
BTC dominance compares bitcoin's market cap to the rest of the market, while the Altcoin Cycle Signal is a price-based comparison across the top 250 altcoins ex-stablecoins, designed to be agnostic to which specific alts an investor holds.
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How often is the signal updated?
Glassnode updates the metric daily at 10:15 UTC, with the data point reflecting the previous day's reading.
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What level matters most for confirming a rotation regime?
A sustained move above 75 is generally treated as the structural green light for rotation. The key test is whether the index can hold the mid-70s through any BTC drawdown, which is what separates a durable rotation from a single-week squeeze.
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