Currency Correlation Guide
Currency correlations measure how different forex pairs and asset classes move in relation to each other. Understanding correlations helps traders diversify risk and avoid overexposure to the same underlying drivers.
Some currency pairs are positively correlated — they tend to move in the same direction. For example, EUR/USD and GBP/USD often move together because both are driven by USD weakness or strength. Conversely, USD/CHF and EUR/USD are negatively correlated (when EUR/USD rises, USD/CHF tends to fall). Correlations range from +1 (perfect positive) to -1 (perfect negative) and change over time, especially during different market regimes.
Cross-asset correlations are equally important. The US dollar tends to have a negative correlation with gold and copper (priced in dollars), a negative correlation with the S&P 500 during risk-on periods, and a positive correlation with US Treasury yields (higher yields attract capital). Commodity currencies (AUD, NZD, CAD) correlate positively with their respective commodity prices. The yen and Swiss franc tend to strengthen during equity market sell-offs (negative correlation with stocks).
Using Correlations in Trading
Traders use correlation matrices to avoid simultaneously holding multiple positions driven by the same factor (e.g., long EUR/USD and long GBP/USD doubles USD-risk exposure). Correlation also helps identify hedging opportunities — if two pairs are strongly positively correlated, buying one and selling the other creates a pairs trade that isolates the relative performance. Correlation breakdowns can signal regime changes and are themselves tradable opportunities.
FAQs
How often do currency correlations change?
Correlations can shift significantly over weeks or months, especially during major shifts in monetary policy or risk sentiment. Recalculate correlations periodically.
What is a pairs trade in forex?
A pairs trade involves taking a long position in one currency pair and a short position in a highly correlated pair, profiting from the relative performance difference.
Which currency is most correlated with gold?
AUD/USD tends to have a positive correlation with gold because Australia is a major gold producer and gold is priced in USD.