Altcoin spot volume hits nearly 4x Bitcoin's, highest ratio since September 2025
In brief
- Altcoin spot volume hit nearly 4x Bitcoin's, the highest ratio since September 2025, per Glassnode.
- About 72.5% of tracked altcoins beat Bitcoin in the week ending September 22, versus 39% in August.
- Similar spikes have historically coincided with local Bitcoin price peaks, Glassnode said.
- Altcoin exchange deposits rose markedly, while altcoin perpetual open interest barely grew.
Breadth, not just volume
It's not a handful of names doing the work. In the seven days ending September 22, roughly 72.5% of altcoins tracked by Glassnode outperformed Bitcoin. During a similar surge in August, that share was only 39%.
Crypto Briefing's report adds two more breadth readings (neither is tied to a named data provider). The Altcoin Season Index climbed to 62% as of late September, up from 50% a week earlier and 33% a month before that, and about 87% of Binance-listed altcoins were trading above their 200-day moving averages.
What Glassnode sees for Bitcoin
This is where Bitcoin comes in. Glassnode noted that similar spikes in altcoin volume relative to Bitcoin have historically lined up with local price peaks for Bitcoin. That's the analytics firm's reading of past patterns, not a forecast.
Leverage looks different this time. Altcoin perpetual futures open interest showed negligible growth over the past month despite the jump in spot activity, per Glassnode. Crypto Briefing contrasted that with the setups before the February 2021 and December 2024 market tops, both of which followed a significant buildup in leveraged positions.
Spot is carrying this move, not borrowed money.
Exchange deposits climb
Glassnode data also showed a marked rise in altcoin deposits flowing to exchanges. Crypto Briefing described exchange inflows as often a precursor to selling, since traders typically move assets onto platforms when they want to convert them to cash or stablecoins. The outlet framed that as a general pattern (it isn't a verdict on these specific deposits).
So what's the takeaway? The market's rotated hard toward altcoins, and it's done so mostly through spot buying rather than leverage. Glassnode's history says spikes like this one have tended to show up near local Bitcoin highs. Whether that pattern repeats won't be clear until the data plays out.
Frequently asked questions
Does high altcoin volume relative to Bitcoin mean Bitcoin has peaked?
Not necessarily. Glassnode noted that similar spikes in altcoin volume relative to Bitcoin have historically coincided with local Bitcoin price peaks, but that's a reading of past patterns. Altcoin perpetual futures open interest also showed negligible growth over the past month, unlike the leverage buildup that preceded the February 2021 and December 2024 tops.
Why do altcoin deposits to exchanges matter?
Glassnode data showed a marked rise in altcoin deposits flowing to exchanges. Crypto Briefing described exchange inflows as often a precursor to selling, since traders typically move assets onto platforms to convert them to cash or stablecoins. It's a general pattern, not confirmation that selling will follow.
