The Commitments of Traders (COT) Report is the U.S. Commodity Futures Trading Commission’s weekly publication showing how open interest in covered futures markets is distributed among reportable trader categories and nonreportable positions; combined formats also incorporate options-on-futures exposure on a futures-equivalent basis. The reports describe positions as of Tuesday’s close and are generally released on Friday at 3:30 p.m. Eastern Time, so the data are a delayed positioning snapshot rather than a real-time measure. A market is included when 20 or more traders hold positions at or above the CFTC’s applicable reporting levels.
The threshold has an important consequence that is easy to miss. Clearing members, futures commission merchants and foreign brokers report large-trader positions to the CFTC daily. If a trader reaches the reporting level in any single futures month or option expiration, the reporting firm reports that trader’s entire position in all futures and option expirations in that commodity, not merely the portion above the threshold. In the published COT data, Nonreportable Positions are derived as the difference between total open interest and aggregate Reportable Positions; the report therefore provides no trader count or category breakdown for that residual.
One label, several classification systems
“COT” does not refer to one universal trader taxonomy. The Legacy report divides reportable open interest into Commercial and Non-Commercial traders. The Disaggregated report, used for physical commodity markets, separates Producer/Merchant/Processor/User, Swap Dealers, Managed Money and Other Reportables. Traders in Financial Futures (TFF) uses Dealer/Intermediary, Asset Manager/Institutional, Leveraged Funds and Other Reportables for financial contracts. The Supplemental report adds an Index Trader classification for selected agricultural markets. These are report families; Futures Only and Futures and Options Combined are report formats, not separate classification systems.
That format distinction is economically meaningful. In a combined report, option positions are converted to futures-equivalent positions with delta factors supplied by exchanges before being added to futures positions. A combined COT number therefore is not simply a count of futures contracts plus raw option contracts. Changes in option deltas can alter futures-equivalent exposure even when the number of option contracts itself has not changed.
What the snapshot can—and cannot—tell you
COT data reveal aggregated positioning under a regulatory classification framework; they do not identify the motive behind every position or provide a directional forecast. The CFTC classifies traders rather than each individual trading activity, so category membership does not establish whether a particular position is hedging, speculative or serving another purpose. Similarly named categories in different report families are not interchangeable. Large net positions or extreme historical readings can be useful research inputs, but they do not by themselves establish that a market is bullish, bearish or due to reverse.
For systematic research, the timestamp matters as much as the number. Tuesday’s positions are generally not publicly available until Friday afternoon, and holidays or exceptional disruptions can shift the release schedule. A backtest that acts on Tuesday using that week’s published COT figures would therefore introduce look-ahead bias. The defensible research question is not only “what was the position?” but also “which report family and format produced it, and when could a market participant actually have known it?”