CME bitcoin futures open interest reached a record 5,190 contracts

The record exposed on June 3

On June 3, 2019, a newly reported reading of U.S. Commodity Futures Trading Commission data showed open interest in Chicago Mercantile Exchange bitcoin futures at 5,190 contracts as of May 28, 2019, then the highest level in the contract’s history. Each CME contract represented five bitcoin, so the outstanding positions corresponded to 25,950 bitcoin of contract exposure. That multiplication is a contract-unit calculation, not a claim that 25,950 bitcoin changed hands or sat in custody at CME.

The CFTC’s Traders in Financial Futures report also showed that open interest had risen by 540 contracts from May 21, when the implied total was 4,650. Coinburn calculates the increase as 11.6% over that seven-day reporting interval: 540 divided by 4,650. A contemporaneous CoinDesk report published on June 3 identified the 5,190-contract reading as a record, bringing a technical derivatives-market statistic into the broader bitcoin market conversation.

Why the record mattered

CME’s cash-settled bitcoin futures were part of the regulated U.S. derivatives infrastructure, rather than an offshore spot exchange. Rising open interest therefore showed that more futures positions remained outstanding at the reporting cutoff. It was meaningful evidence that the regulated market had deepened during bitcoin’s 2019 recovery, even though the figure alone could not identify every participant’s motive.

The distinction between open interest and volume is essential. Open interest counts contracts that remain open; trading volume counts contracts exchanged during a period. Nor is open interest a directional signal. Every outstanding futures contract has a long side and a short side. A record can reflect new hedges, relative-value positions, speculation, or combinations of those strategies. It does not establish that institutions were uniformly buying bitcoin or expecting its spot price to rise.

The CFTC report classified reportable positions across dealer/intermediary, asset-manager/institutional, leveraged-fund and other-reportable categories, while separately deriving nonreportable positions. Those categories describe reporting status and market role; they do not provide the identities of traders. The same report listed 47 reportable traders in the bitcoin market, but confidentiality thresholds suppressed some category-level trader counts. That limits any attempt to infer concentration from the public table.

The market-data window

The central measurement is CME bitcoin futures open interest captured by the CFTC for May 28, 2019. It is not a June 3 snapshot of bitcoin spot trading. Bitcoin traded continuously across many venues, while CME futures followed exchange hours and expired under a cash-settlement design. No spot price or percentage price move is used here because a venue, currency pair and daily cutoff would be required for a defensible comparison.

The 25,950-bitcoin equivalent comes from multiplying 5,190 contracts by the stated five-bitcoin contract unit. It should not be doubled for the long and short sides, because those are two sides of the same open contracts. It also should not be translated into dollars without choosing a dated futures price or settlement benchmark.

Later confirmation, kept separate

On June 4, 2019, CME reported that May 2019 bitcoin-futures average daily volume reached a record 13,600 contracts, 246% above May 2018. That exchange announcement was released after the June 3 record report and is included only as later confirmation that May activity was unusually high. It does not change the May 28 measurement or prove that higher futures participation caused any move in bitcoin’s spot price.

The next archival check is whether surviving CME daily files can independently establish the exact first date on which 5,190 became the record, and whether any earlier intraday reading exceeded the CFTC’s weekly snapshot.