Correlations Between Major Pairs
by Ayesha Jones · 22 Oct 2026
Which currency pairs tend to move together, which move opposite, and why trading several of them can be the same trade twice.
Currency pairs are not independent. Many of them share a currency, and the shared currency drags them in the same direction. A trader who is long the euro against the dollar and long the pound against the dollar may believe they have two trades. On most days they have one trade, a bet against the dollar, in two sizes.
Why pairs correlate
Three pairs quoted against the dollar will move together whenever the dollar is the driver. Pairs that share the yen will move together whenever the yen is the driver. A pair like the dollar against the Swiss franc tends to move opposite to the euro against the dollar, because the euro and the franc are closely linked through their economies and the dollar sits on the opposite side of each quote.
These links are not fixed. During a period dominated by one central bank, the pairs that include its currency decouple from the others. During a risk-off wave, the yen and the franc pairs may dominate. Correlation is a tendency that strengthens and weakens.
Measuring it
You do not need statistics to see it. Place two pair charts side by side on a daily timeframe and look at the last few months. If the swings line up, the correlation is high; if they diverge, it is low. For a number, a rolling correlation over a month is enough, and anything strongly positive or strongly negative deserves attention.
Why it matters for risk
If you take two correlated trades at full size each, your real risk is double what the plan allows. If you take two negatively correlated trades, they partly hedge each other and your effective exposure is smaller than it appears. Neither is wrong, but both should be deliberate.
A practical rule is to count exposure by currency rather than by pair. Add up how much you are long or short of each currency across all open trades. If the dollar exposure is three times the planned risk, you have one large dollar trade, whatever the pair names say.
Using divergence
When two normally correlated pairs diverge, one of them is lagging. Some traders look for the laggard to catch up; others take it as a warning that the shared story is weakening. Either way, a divergence between pairs that usually move together is information.
What to watch
Watch your net exposure by currency, the rolling correlation between the pairs you trade most, and moments when the usual relationships break. A break in correlation often marks the start of a new theme in the market.
Trust Scores describe past, verified behaviour and conduct. They are not a prediction of future results or a recommendation to trade. Trading carries a substantial risk of loss; only trade with capital you can afford to lose.
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