How do currency correlations work between different pairs?
Currency correlations measure how two Forex pairs move in relation to each other.
The Basics
- Positive correlation (+0.5 to +1.0): Pairs move in the same direction.
Example: EUR/USD and GBP/USD often rise or fall together because both have the USD as the quote currency and are driven by similar risk sentiment and European economic factors.
- Negative correlation (-0.5 to -1.0): Pairs move in opposite directions.
Example: EUR/USD and USD/CHF usually move inversely. When EUR/USD rises (USD weakens), USD/CHF typically falls.
- Low or zero correlation (near 0): Pairs move independently.
Example: EUR/USD and AUD/JPY can show little consistent relationship.
The correlation coefficient ranges from -1.0 (perfect negative) to +1.0 (perfect positive). Values between +0.7/-0.7 are considered strong in Forex.
- Shared currency: Any pair with USD (majors) will correlate with other USD pairs.
- Economic links: Commodity currencies (AUD, CAD, NZD) correlate due to oil, gold, or similar risk appetite.
- Market sentiment: Risk-on/risk-off moves push pairs in the same or opposite directions.
- Risk management: If you are long EUR/USD and long GBP/USD, you are double-exposed to USD weakness not diversified.
- Hedging: Long EUR/USD + short USD/CHF can offset some risk.
- Avoid overexposure; Don't pile into highly correlated pairs thinking you're spreading risk.
- Strategy ideas: Trade breakouts on one pair and take confirmation from its correlated pair. Or fade moves when correlation breaks down.
Important: Correlations are not fixed. They change over time due to news, central banks, or regime shifts (e.g., during crises they can spike).