“SMSFs would be prudent to consider how they can diminish their Australian equities risk and reduce cash holdings and rebalance their portfolios to incorporate greater geographic diversification,” said Mr Resnik.

“Given that some of the best returns right now are being offered by offshore stock markets, SMSFs are missing out on these opportunities given their huge bias towards local shares.”

If the Australian dollar continues to fall, Mr Resnik said, SMSF trustees could see even greater gains from holding offshore investments.

Unhedged international investments can spread investment risk given that when equity markets fall, the Australian dollar tends to fall also, he added.

“[This] can cushion a downturn in global share markets given the benefits of local currency depreciation,” Mr Resnik said.

“For this reason, SMSFs might want to reassess their asset allocations and their home bias.”

Many SMSFs therefore “look to be in need of investment advice”.

“By better understanding how financial markets work, and the impact of asset allocation on portfolio behaviour, SMSFs can better prepare for market downturns when they happen,” he said.

“No SMSF should be surprised by falling markets and they should be prepared for the inevitable.”