If you read Bitcoin market updates in October 2026, you probably saw phrases like "Bitcoin is trading below the ETF cost basis" or "the True Market Mean sits near $77,600." These levels have become a common way to describe where buyers and sellers may step in.
This guide explains what cost basis means, which levels analysts follow most closely and how a regular trader can use them as context rather than as signals.
What cost basis means
Cost basis is simply the average price paid for an asset. If you bought 0.1 BTC at $70,000 and another 0.1 BTC at $90,000, your cost basis is $80,000. Above that price you are in profit on paper, below it you are at a loss.
On-chain analytics firms such as Glassnode estimate the same thing for large groups of holders by tracking when coins moved and at what price. The idea behind watching these levels is behavioural: many investors act differently when their position returns to break-even. Some sell to "get out even", while others defend their entry by buying more.
The main levels analysts watch
- US spot ETF cost basis: the running average price at which Bitcoin has flowed into US spot Bitcoin ETFs. Glassnode notes that it weights each day's price by that day's net inflow and that outflow days do not change the average, so it reflects the average entry of money that came in, not of every coin the funds hold.
- True Market Mean: Glassnode's estimate of the average cost basis of active investors, excluding coins considered lost or long dormant.
- Short-term holder cost basis: the average entry of coins held for up to about six months, often seen as the break-even point of newer market participants.
- Cohort cost bases: the average entry of coins bought during a specific period, for example 6 to 12 months ago or 1 to 2 years ago.
- Treasury company cost basis: an estimate of the average price paid by public companies that hold Bitcoin on their balance sheets.
Where these levels stood in October 2026
According to Glassnode research and reporting by CoinDesk and Cointelegraph during October:
- The US spot ETF cost basis was around $81,500 in mid-October, per Glassnode's weekly reports. On October 23, CoinDesk cited a Glassnode chart putting it at about $82,313. Different snapshots and methodology updates can produce slightly different figures.
- Glassnode estimated that tracked treasury companies hold Bitcoin at an average cost of about $80,200.
- The True Market Mean sat near $77,600.
- Cointelegraph, citing Glassnode, put the short-term holder cost basis at about $74,600.
- Coins bought 6 to 12 months ago had a cost basis of about $88,000, and coins bought 1 to 2 years ago sat near $100,000, according to Glassnode.
With Bitcoin trading near $80,660 on the morning of October 24, according to Basis Desk data, price was sitting right inside the $80,000 to $82,300 band where the ETF and treasury cost bases overlap. Glassnode noted that a cluster of large bids on the Binance order book had also gathered near $80,000, so on-chain and order-book support pointed to the same zone.
Why the ETF cost basis gets so much attention
US spot ETFs are one of the largest and most visible sources of Bitcoin demand, and their daily flows are published. When price trades above their average entry, the typical ETF investor is in profit and may be more comfortable holding or adding. Glassnode points out that extended periods below this line have historically pressured flows, because more ETF buyers are underwater.
The October data illustrates this. Glassnode reported that Bitcoin dipped under the ETF line on October 8, 13 and 15 and closed back above it each time, while ETF flows swung between strong inflow days and outflow days. SoSoValue data showed US spot Bitcoin ETFs lost about $635 million on October 22 after more than $1 billion of inflows earlier that week, as reported by CoinDesk.
How cohort levels can act as resistance
Cost basis levels above the market work the other way. Investors who bought near the top and have been underwater for months may sell when price returns to their entry. Glassnode noted that the 6 to 12 month cohort's cost basis near $88,000 and the 1 to 2 year cohort's level near $100,000 both turned price back earlier in 2026. That is why the $85,000 to $88,000 area was described as heavy overhead supply in October.
How to use cost basis levels sensibly
Cost basis levels are context, not trading signals. A few practical rules:
- Think in zones, not exact numbers. Estimates differ between providers and update every day.
- Look for confluence. A level matters more when on-chain cost basis, order-book bids and recent price reactions line up, as they did around $80,000 in October.
- Watch closes, not wicks. Glassnode focuses on daily closes above or below a level rather than brief intraday dips.
- Combine with flows and macro. ETF flows, interest-rate decisions such as the Federal Reserve meeting on October 27 and 28, and broader risk sentiment can overwhelm any on-chain level.
- Plan your actions in advance. Decide what you would do if a level holds or breaks, including position size and slippage limits, instead of reacting in the moment.
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Key takeaways
- Cost basis is the average purchase price of a group of holders, and analysts use it to map where selling or buying pressure may appear.
- In October 2026, the ETF and treasury cost bases clustered between roughly $80,000 and $82,300, with the True Market Mean near $77,600 below and older buyer cohorts near $88,000 and $100,000 above.
- These levels describe investor behaviour, not guaranteed support or resistance.
This article is for information only and is not financial advice. Crypto prices are volatile, and you should only trade what you can afford to lose.