Given that repeated research has found that a diversified portfolio's asset allocation is responsible for the vast majority of its variations in returns over time, it makes much sense for investors to get it right.

And once investors set an appropriate strategic asset allocation – the targeted exposure to different investment asset classes – they should gain more freedom to concentrate on the other fundamentals of sound investment management.
In a way, the creation and implementation of a portfolio's strategic asset allocation – perhaps using low-cost, indexing-tracking exchange traded funds (ETFs) or their equivalent in unlisted traditional index funds – could be described as a freedom-maker.
With their asset allocation in place – reflecting an investor's goals, tolerance to risk and expectations for returns – they can focus more on such critical issues for investing success as:
In short, having an appropriate strategic asset allocation in place gives you more freedom to concentrate on other matters under your control, rather than worrying about what's beyond your control. Of course, setting the right asset allocation is at the top of what's under your control.
Written by Robin Bowerman
Head of Corporate Affairs at Vanguard.
02 October 2018
vanguardinvestments.com.au