This is because these funds are 'go anywhere' vehicles which can invest across the asset class spectrum from cash-like instruments through to property, bonds and stocks.
The recent malaise in markets has prompted action from the world's central banks in the form of arguably predictable rhetoric from the European Central Bank's president Mario Draghi and a surprise move from his counterpart in Japan, Haruhiko Kuroda.
So what should investors do?
Trevor Greetham, former Fidelity multi-asset manager and now head of multi-asset at Royal London Asset Management, has created his own sentiment indicator (below) which helps him decide when to top-up on equities.
"Our investor sentiment indicator combines signals from the markets with investor and company director buying appetite to measure the level of investor sentiment," he said.
"A negative reading indicates depressed sentiment and we view readings below -1 as a signal to buy shares."
This means the current reading of -1.4, accompanied as it is with renewed dovishness from Europe and Japan's central banks, is particularly appealing.
"With investor sentiment deeply oversold we have been buying equities and remain overweight Europe and Japan, the regions where policy is loosest," he said.
Mr Greetham added worries about the growth rate in China and the impact this was having on commodity markets and thus stocks would "always be met with monetary easing".
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