From HSBC:
The AUD has generally had three distinct and clear drivers:
- commodity prices,
- China
- and carry.
When these three drivers aligned, one-way traffic provides a clear path for the AUD. We saw this clearly in both the bull market and the bear market. When the three Cs aligned in the bull market of 2009-2011, AUD-USD rallied from 0.65 to 1.10. The AUD then drifted sideways until the three Cs aligned in the bear market of 2013-2016, AUD-USD fell from 1.05 to 0.70.The issue now is that these three factors are not aligned. On top of this, the relationship between the AUD and its drivers has changed.
- The AUD has failed to keep up with stronger commodity prices.
- China’s economic stability does not point us in a clear direction for the AUD, and risks of a US-China trade spat would leave the AUD exposed.
- This leaves interest rate differentials as the dominant driver of AUD-USD.