The Legacy COT Report is one of the Commodity Futures Trading Commission’s Commitments of Traders report families. It uses the broad Legacy classification framework: reportable open interest is divided into Commercial and Non-Commercial traders, while Nonreportable Positions are shown separately. “Legacy” identifies the report family, not the report format. The family is available as Futures Only and Futures and Options Combined.
Broad classifications, not trade motives
Trader classifications are based on information supplied by reportable traders on CFTC Form 40 and the Commission’s classification process. In the Legacy framework, a trader is classified as Commercial or Non-Commercial for a commodity; that label does not establish why every individual position was opened or whether every position is a hedge or a speculative trade. In physical commodities, the Disaggregated COT separates categories that sit inside the broader Legacy framework: Producer/Merchant/Processor/User and Swap Dealer on the commercial side, and Managed Money and Other Reportables on the non-commercial side. “Commercial” therefore should not be read simply as “producer,” and “Non-Commercial” is not a pure hedge-fund measure.
The classification mechanism creates another research trap: a week-to-week category change need not arise only from buying or selling. The CFTC notes that reported category totals can change when a trader changes the business function reported on Form 40, when a new reportable trader enters the data, or when an existing trader leaves. Category movement is therefore an observation that still requires interpretation.
Timing, thresholds and combined methodology
COT reports generally describe positions as of Tuesday’s close and are published Friday at 3:30 p.m. Eastern Time, although holidays can shift the schedule. A market is included when 20 or more traders hold positions at or above CFTC reporting levels. If a trader reaches a reporting level in any single futures month or option expiration, the reporting firm reports that trader’s entire position across all futures and options expiration months in that commodity, regardless of size. Nonreportable long and short positions are residual quantities derived by subtracting reportable positions from total open interest.
In the Futures and Options Combined format, option positions are converted to futures-equivalent positions using delta factors and then combined with futures positions. Long calls and short puts contribute long futures-equivalent exposure; short calls and long puts contribute short futures-equivalent exposure. The combined report is therefore not a raw count of option contracts added to futures contracts.
The Legacy series is useful partly because the CFTC provides Futures Only history back to 1986 and combined history back to 1995. That history is not methodologically timeless: publication frequency and release lag changed before the modern weekly schedule was established. Point-in-time research should not project today’s Tuesday-to-Friday availability backward across the entire series. More broadly, mixing Legacy categories with Disaggregated or TFF categories, or mixing Futures Only with combined data, can create apparent positioning changes that come from classification, coverage or measurement differences rather than from traders changing exposure.