Positioning changes week to week. Open interest changes more slowly and is harder to argue with, because a contract only exists while two parties are willing to carry it. Across CME’s five digital asset futures the direction this year has been consistent, and it runs against the prevailing account of institutional adoption.
Change in open interest across the regulated crypto complex, 2026 to date
Percent change in contracts of open interest from the first report of the year to the latest.
Source: CFTC Commitments of Traders, Traders in Financial Futures, futures only. Prices are Coinbase daily closes. Computed by Institutional Asset Journal.
The complex in one table
| Contract | Open interest, January | Latest | Change | Notional |
|---|---|---|---|---|
| CME bitcoin futures | 22,168 | 20,143 | −9% | $6.5bn |
| CME ether futures | 37,920 | 20,431 | −46% | $1.9bn |
| CME micro bitcoin futures | 27,086 | 21,203 | −22% | $135.8m |
| CME micro ether futures | 102,523 | 36,131 | −65% | $6.8m |
| CME micro solana futures | 3,540 | 2,174 | −39% | $4.0m |
The single contract that has grown is micro bitcoin, which is one tenth of a bitcoin and is the contract an individual buys when the full-size one is out of reach. The two full-size institutional contracts have both shrunk, ether considerably.
Why open interest is the better measure
A flow figure tells you what moved in a period. Open interest tells you what is still there, which is the question an allocator is usually asking. It also cannot be inflated by turnover: a contract traded a hundred times in a day adds nothing to open interest unless somebody ends the day holding it.
That property makes it the right series for testing an adoption claim. Rising volume with flat open interest describes a market where the same positions change hands faster. Rising open interest describes a market where more capital is committed. Only the second supports the claim.
Volume tells you what moved. Open interest tells you what stayed.
Institutional Asset Journal
The notional total is the context
All five contracts together carry $8.5bn of notional open interest. For a market that is regularly described as institutionalized, that figure belongs in every discussion of it. The comparison is not with the market capitalization of the underlying assets, which measures something else entirely, but with the open interest of other regulated futures used by the same institutions.
On that comparison the regulated digital asset complex is not yet a significant part of the institutional derivatives market. It is a real market, cleared and reported to the same standard as any other, and it is small.
How this was measured
- Figures are taken from the CFTC’s Commitments of Traders release, Traders in Financial Futures, futures only. That report covers positions held at the close on a Tuesday and is published the following Friday at 15:30 Eastern, so every reading here is three days old on the day it appears. Net positions exclude spread holdings, which the CFTC reports separately. Notional values apply the CME contract multiplier and the Coinbase daily close on the report date. The series is rebuilt from source each week; the CFTC restates prior weeks on occasion and restatements are carried through rather than footnoted.
