Macro

COT Data Trading — How to Use Commitment of Traders Reports

W
Will Simpson
2026-03-25
11 min read

The Commitment of Traders (COT) report is one of the most underused tools in retail forex trading. Published weekly by the CFTC, it shows the actual positioning of institutional traders — the players who move markets. Ignoring COT data is like playing poker without looking at the other players' betting patterns.

What is the COT Report?

The CFTC requires all traders with positions above a certain size to report their holdings weekly. This data is compiled and published every Friday (for positions held on Tuesday). It shows three main categories:

How to Read COT Data

The most important number is the net position of non-commercial traders — total long contracts minus total short contracts. A large positive number means institutions are net long (bullish). A large negative number means they are net short (bearish).

But the absolute number matters less than the change over time. When net positions are at extreme levels and start to reverse, that signals a potential trend reversal. When positioning is building steadily in one direction, the trend is likely to continue.

Key Signal

Watch for when non-commercial net positions reach multi-year extremes. When speculators are at record net long and positioning starts declining, a reversal is often near.

COT as a Trend Confirmation Tool

Rather than trying to call tops and bottoms with COT data, use it to confirm trades you are already considering from technical analysis. If your chart analysis says EUR/USD is bullish and the COT shows institutions building net long EUR positions, your conviction should increase significantly.

The Index Approach

Raw COT numbers are hard to compare across currencies because contracts have different sizes. A more useful approach is to create a COT index — normalise the data by calculating where current net positioning sits relative to its historical range over the past 3 years.

A reading above 80 means speculators are more bullish than they have been 80% of the time in the past 3 years — extreme bullish sentiment. A reading below 20 means extreme bearish sentiment.

Arcis AI calculates and displays these indexed readings on the macro dashboard for all major currency pairs, updated weekly after Friday's COT release.

COT and Currency Strength

Combine COT positioning with currency strength analysis for higher-probability signals. If institutions are net long EUR (COT) and EUR is showing the strongest currency reading on the day (currency strength meter), EUR pairs are a high-probability long against weaker currencies.

Limitations of COT Data

COT data is published with a 3-day delay (positions as of Tuesday, published Friday). It shows direction but not exact timing. Markets can remain at extreme positioning for weeks or months before reversing. Use it as one input alongside technical analysis, not as a standalone signal.

COT data is most powerful at extremes. When speculators are at near-record net long and start reducing positions, that often marks the beginning of a significant reversal. The trend is already changing — the retail trader just has not noticed yet.

COT data on your macro dashboard

Arcis AI includes weekly COT positioning for all major currencies, displayed as an easy-to-read index showing current sentiment versus historical levels.

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