This practical guide explains the Commitment of Traders report, its weekly publication schedule, the difference between report types, how to calculate net positions, and where to obtain official historical COT data.
What Is the Commitment of Traders Report?
A COT report shows a breakdown of the open interest in futures markets that meet CFTC reporting thresholds. Positions come from reporting firms and are grouped into trader categories. The data usually reflect positions held as of Tuesday's close of business.
These categories describe a trader's predominant reported business purpose. The CFTC does not reveal the identities of individual traders, and the report does not explain why any one trader opened a position. Hedging, speculation and risk management may all be involved.
When Is the COT Report Released?
The CFTC generally releases the weekly COT report on Friday at 3:30 p.m. U.S. Eastern Time, based on positions from the preceding Tuesday. Holiday weeks can have a different publication date. Always consult the official CFTC release schedule.
This delay is crucial in historical testing. Tuesday's positioning was generally not publicly known until Friday. A strategy that acts on Tuesday using the same week's COT figures would introduce look-ahead bias.
Which COT Report Type Should You Use?
The CFTC publishes different report families for different markets and classification systems. Selecting the right COT report matters more than simply downloading every available file.
| Report | Trader categories | Useful for |
|---|---|---|
| Legacy COT | Commercial, non-commercial and nonreportable positions | Broad historical analysis |
| Disaggregated COT | Producer/Merchant/Processor/User, Swap Dealers, Managed Money, Other Reportables | Physical commodity futures |
| Traders in Financial Futures (TFF) | Dealer/Intermediary, Asset Manager/Institutional, Leveraged Funds, Other Reportables | Financial futures and currencies |
| Supplemental COT | Additional index-trader breakdown for selected agricultural markets | Specialized agricultural research |
Major families offer futures-only and futures-and-options-combined versions. The combined figures convert option positions to futures-equivalent positions. These report formats are not directly interchangeable.
How to Read Long, Short and Open Interest
Long Positions and Short Positions
Long positions generally benefit from a rising futures price, and short positions from a falling futures price. A COT table aggregates the reported long and short contracts held by each trader category. Some reports also identify spreading positions.
What Is Open Interest?
Open interest is the number of outstanding contracts not yet closed or otherwise settled. It is different from volume, which measures trading activity over a period. Each outstanding futures contract has both a long and a short side, so the whole futures market cannot be net long.
Calculating the Net Position
Analysts often calculate a group's net position as long contracts minus short contracts. For example, a category with 120,000 long contracts and 85,000 short contracts has a hypothetical net position of +35,000 contracts. That calculation says something about the group, not whether prices must rise.
Commercial and Non-Commercial Traders
In Legacy COT reports, commercial traders generally use futures in connection with business activities, while non-commercial traders are typically viewed as speculative participants. These are broad regulatory categories, not perfect descriptions of motivation. In Disaggregated and TFF reports, more detailed groups can be studied separately.
How Traders Interpret COT Positioning
Position changes can help identify growing or declining participation by groups such as managed money or leveraged funds. Analysts compare current values with a longer historical range, study week-to-week changes and normalize positions by open interest where appropriate.
Some researchers calculate a COT index to estimate where current net positioning sits within its historical high-low range. The chosen lookback period and report category strongly affect the result. A positioning extreme may persist for weeks or months; it is not an automatic contrarian trading signal.
How to Download Free Historical COT Data
The official CFTC COT portal provides current reports and links to historical datasets. The CFTC also offers historical compressed files and a Public Reporting Environment for filtering and exporting data.
- Select the report family appropriate to your futures market.
- Choose futures-only or futures-and-options-combined data consistently.
- Choose the relevant contract or CFTC market identifier.
- Download the historical dataset using an officially supported export format.
- Keep both the Tuesday observation date and the actual publication date for accurate backtesting.
CFTC historical coverage varies by report family. Legacy datasets go back to 1986; Disaggregated and TFF histories start in 2006. A long historical range does not mean every category or market has a perfectly continuous series.
How to Store COT Data in a Local Database
For repeatable research, an organized local database can store historical COT records by market, report family, contract, observation date and trader category. A unique record identity prevents duplicates, while a controlled update process adds newly published observations and checks for revisions.
Storage should preserve the original source, definitions and dates. Never mix futures-only and combined series as though they measured the same positions. Changing trader classifications and CFTC historical methodology can also affect comparisons.
Common COT Backtesting Mistakes
- Look-ahead bias: acting on Tuesday with a report normally released Friday.
- Wrong report family: mixing Legacy, Disaggregated and TFF trader categories.
- Missing normalization: comparing raw contract counts without considering open interest and market size.
- Assuming extremes imply reversals: crowded positions can remain crowded.
- Ignoring historical changes: revisions, classifications and contract specifications can change the dataset.
A COT-based strategy should be tested on unseen periods with realistic execution costs and risk controls. Historic positioning patterns are not a promise of future performance.
COT Reports and DataPumpBridge
DataPumpBridge FreeQuotes integrates CFTC Commitments of Traders data alongside historical daily market prices and FRED economic time series for compatible NeuroShell Trader workflows. COT support extends to the TaiPan and Interactive Brokers (IB) modules and to the standalone Data Downloader for users without NeuroShell Trader. The broader DataPumpBridge approach uses a separate local SQLite database to organize acquired historical data independently of the charting platform.
COT data originates from the CFTC, not from TaiPan, Interactive Brokers or other data providers; DataPumpBridge does not create official CFTC reports or include exchange market-data licenses. Specific COT retention, export and update capabilities are described on the product pages.
Frequently Asked Questions
Is COT data free?
Yes. The CFTC publishes its reports and historical datasets for public access. Third-party analysis software may charge separately.
Is the COT report real-time?
No. It is a weekly snapshot, usually reflecting Tuesday positions and released Friday afternoon.
Does a positive net position mean prices will rise?
No. It describes a selected trader group's long-minus-short exposure. It is not a reliable standalone prediction.
Which report should currency traders use?
The Traders in Financial Futures report is often relevant for financial futures, including currencies. The appropriate classification depends on the research question.
Can I export COT data as CSV?
Yes. The CFTC Public Reporting Environment supports data exports, and historical compressed datasets are available through official CFTC pages.