Asia FX Shift: Aussie Dollar's Role as Proxy Under Threat

The Australian dollar's long-standing role as a proxy for emerging Asia may be changing due to recent shifts in regional currency movements against the US dollar.

A joint US-Japan intervention has removed the divergence between the yen and other Asian currencies, which had been appreciating against the greenback. This development raises questions about whether broader Asia FX will outperform after years of underperformance.

According to the BIS Triennial Survey, the Aussie is the world's seventh most actively traded currency, accounting for just over 6% of global FX turnover. Historically, it has been a preferred way to express views on emerging Asia without taking on additional risks associated with EM currencies.

However, if investors believe the relative outlook for emerging Asia FX is improving, some capital may begin rotating back into those markets from the Australian dollar. This would not necessarily mean AUD/USD weakens but could result in the Aussie underperforming against regional currencies as investors redeploy capital across Asia.