AUD/USD

AUD/USD is a commodity currency pair — the Australian dollar’s value is significantly driven by iron ore, coal, and LNG export prices, which in turn track Chinese industrial demand. This macro linkage creates multi-week trending periods that align with commodity cycles rather than purely FX-specific factors.

For EA traders, AUD/USD’s value is as a diversifier in multi-pair portfolios. Its correlation with EUR/USD is positive but moderate (typically 0.60–0.75 over rolling 30-day periods), meaning a portfolio holding both pairs in the same trend direction is not double-counting the same USD move as cleanly as EUR/USD + GBP/USD would. The Balanced Portfolio V1 EA in this catalogue uses AUD/USD specifically for this diversification property.

Session note: unlike European pairs, AUD/USD sees genuine price action during Sydney session (21-00 UTC) due to Australian economic data and regional risk flows. Trend EAs with 24-hour operation perform better on AUD/USD than they do on EUR/USD, where Sydney-session signals frequently reverse.

Risk regime: AUD/USD is a reliable risk barometer. When global equity markets fall sharply, AUD/USD typically drops 1-2% in hours as investors sell commodity exposure. EAs without risk-off filters will take stop-losses in these events. Trend EAs that can detect ADX expansion in the downward direction and short AUD/USD during risk-off periods are particularly effective.