Crypto metric signals altseason as Bitcoin market-cap share stalls below 60%
Glassnode's Altcoin Cycle Signal flipped in favor of altcoins this week, reaching a seven-day rolling mean of 81.25 on its 0-100 scale as Bitcoin climbed to about $86,000 and the industry's market cap reclaimed $3 trillion. The combined market capitalization of the 250 largest altcoins rose to $1.19 trillion, while Bitcoin's dominance stayed below 60%.
Why It Matters
The signal indicates a shift in relative market-cap growth toward altcoins, suggesting broader altcoin participation in the recent market rally even as Bitcoin retains a majority share of total crypto value. Concurrent large inflows into both Bitcoin and Ether ETFs point to renewed investor demand across major crypto products.
Key Facts
- Glassnode Altcoin Cycle Signal (7-day mean): 81.25 (normalized scale 0-100)
- Bitcoin price: $86,000 (this week)
- Industry total market cap: $3 trillion (reclaimed)
- Combined altcoin market cap: $1.19 trillion (highest since late January)
- Altcoin market-cap change since Aug. 19: Up 33%
Onchain analytics firm Glassnode reported that its Altcoin Cycle Signal moved into 'altcoin season' this week as recent market gains favored the 250 largest non-stablecoin altcoins relative to Bitcoin. The metric's seven-day rolling mean measured 81.25 on a normalized 0–100 scale, a reading the firm associates with periods when altcoin market-cap growth outpaces Bitcoin's. Glassnode noted that the most recent rally broadened participation across the altcoin market after altcoins had remained relatively flat earlier in August while Bitcoin rallied.
The shift coincided with Bitcoin trading near $86,000 and the total crypto industry market capitalization rising back above $3 trillion. Combined altcoin market capitalization reached $1.19 trillion on Tuesday, its highest level since late January, and has climbed about 33% since Aug. 19 — a date tied to a previous market move following a U.S. Treasury announcement related to bond-market interventions. Glassnode did not disclose the specific calculation details behind the Altcoin Cycle Signal.
Despite the altcoin advance, Bitcoin retained a majority share of overall crypto market value. Bitcoin dominance — the percentage of total crypto market cap accounted for by BTC — has remained rangebound over the past month and stood at roughly 59.7% versus 59.2% on Aug. 19. Trader and commentator Matthew Hyland described investor sentiment among Bitcoin holders as 'complacency,' saying dominance peaked around 66% in June 2025 and that some investors have been unwilling to accept Bitcoin’s relative lack of outperformance since then.
Investor flows into exchange-traded products also showed broad demand this week. Data from Farside Investors indicated U.S. spot Bitcoin ETFs recorded combined inflows of $999 million on Monday, while Ether ETFs took in $270 million — the largest single-day inflows for both products since October 2025. The ETF flows and the Altcoin Cycle Signal together reflect increased capital moving into both Bitcoin and a wide set of altcoin assets during the recent rally.
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