The Australian dollar plunged against its major rivals Wednesday as Chinese stocks plummeted for two straight days.

The Shanghai Composite Index of stocks declined around 5.1% following it ended 6.2% lower in the last session.

The Aussie ended at 73.19 US cents.

As long as the Chinese market remains down and volatile, risk-averse currencies remain underperforming, said Emma Lawson, Senior Currency Strategist at National Australia Bank Ltd.

Risks relative to Chinese growth raised speculation the Reserve Bank of Australia could be forced to lower the interest rates further.

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