Positioning

What is the COT report, and how do traders use it?

The Commitments of Traders report is a weekly breakdown, published by the US Commodity Futures Trading Commission, of who holds the open positions in American futures markets. For currency traders it answers a question no chart can: not where price is, but how the market is already leaned.

It is released every Friday afternoon US time and reflects positions as they stood on the preceding Tuesday. That three day delay is the first thing to understand about it, and it rules out most of the ways people initially want to use it.

The categories, and which one to read

The report splits open interest by the kind of participant holding it. The names are legal classifications rather than descriptions of strategy, which is a frequent source of confusion.

For currencies, the non-commercial line is the one that carries information. A commercial short in a currency future is frequently an importer hedging a payment, which says nothing about where they think the exchange rate is going.

Net position, and why the level alone is useless

The figure usually quoted is the net position: long contracts minus short contracts for the non-commercial category. Positive means speculators are net long, negative means net short.

The raw number is close to meaningless on its own. Open interest changes over time, contract sizes differ between currencies, and a net long of 50,000 contracts might be an extreme in one currency and unremarkable in another. What matters is the level relative to that currency's own recent history, and the direction it has been moving.

The trap everyone falls into

Extreme positioning is not a reversal signal, and treating it as one is the most common mistake made with this data.

Positions become extreme because a trend is working, and trends can keep working for a long time after the position looks stretched. A currency can stay at a record net short for months while continuing to fall. Selling an extreme simply because it is an extreme is a way to be repeatedly early, which in practice is indistinguishable from being wrong.

What extreme positioning does tell you is something about the shape of the risk. When the catalyst finally arrives, the reaction is likely to be disproportionate, because the unwind adds to the move. It changes how you size and where you expect volatility, not whether you take the trade.

The three day lag

Tuesday's positions published on Friday means that by the time you read the report, three trading days have passed, and those days may have included the exact event that changed everything. If a central bank met on the Wednesday, the report you are reading describes a world that no longer exists.

This is not a defect to work around. It is what the data is: a slow moving description of how the market is leaning, useful over weeks rather than days. Anyone selling COT as a short term timing tool is selling something the release schedule makes impossible.

Reading it for a currency pair

Currency futures are almost all quoted against the US dollar. There is a euro contract, a yen contract, a sterling contract, and so on, each priced in dollars. There is no EUR/GBP future with meaningful open interest.

So for a cross, you are combining two separate dollar denominated positions, and the sign of each one refers to that currency against the dollar rather than against the other. Getting that backwards is an easy and costly error: a net short in one currency and a net long in another tells you something about the cross only once both are read against the dollar first.

For a dollar pair it is more direct. A large net long in the euro contract is the market already positioned for EUR/USD to rise, and that is the position that would have to be unwound if it does not.

What it is genuinely good for

1. Knowing whether you are early or late. A view the market already holds is a crowded view, whatever its merits.
2. Explaining moves that look disproportionate. When a modest data miss produces an outsized move, a stretched position is often the reason.
3. Sizing and volatility expectations. Crowded trades produce sharper reversals, which is a risk management input rather than a directional one.
4. Sanity checking a narrative. If everyone is talking about a theme and positioning does not reflect it, the theme is talk. If positioning is already at an extreme, much of it is priced.

None of these is a reason to enter a trade. All of them are reasons to understand the one you are considering, which is the same argument as market context generally: the data describes the environment, and the conclusion stays yours.

Related terms

Open interest is the total number of contracts outstanding. Rising open interest alongside a trend suggests new money entering; falling open interest suggests positions being closed.

Managed money is a narrower category available in the disaggregated version of the report, separating fund managers from other large speculators. Cleaner than non-commercial where it is published.

Crowded trade is the plain English term for what an extreme net position describes: a view held by enough participants that exiting it moves the price.

Keep reading

• What is market context in trading?
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