EGU
Principled Wealth Management, Practical Business Advisory, Precise Accounting and Taxation
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Insights

Insights

The investor's chief problem: temperament, discipline, and the returns that behaviour destroys

Over the decade to 31 December 2024, the average dollar invested in United States mutual funds and exchange-traded funds earned 1.2% per year less than the funds themselves returned. That is the top-line finding of Morningstar's Mind the Gap 2025 — the most recent edition of a study Morningstar has run annually for more than a decade. The gap has been persistent. Its size has varied; its direction has not.

The gap is the difference between what the underlying investments earned and what the average investor actually captured. Over ten years, 1.2% per year compounds to a shortfall equivalent to roughly 15% of the funds' aggregate total return. The investments performed. The investors, on average, did not.

Benjamin Graham, writing decades earlier, described the problem more directly: "The investor's chief problem — and even his worst enemy — is likely to be himself."

Where the gap comes from

The gap has one general cause: cash flow timing. Investors put money in and take money out. The times they choose to do so are systematically bad.

Four patterns account for most of the shortfall.

The first is performance chasing. Money flows toward investments that have recently done well and away from investments that have recently done poorly. The average dollar therefore enters after the appreciation is already behind it and exits before the recovery. The Australian equity market, the US market, gold, listed property — every asset class shows the same footprint in fund flow data. Buy after the run; sell after the fall.

The second is panic selling. When markets fall sharply, redemption rates rise. Fund managers face selling pressure precisely when the underlying holdings have become cheaper. The individual investor experiences this in reverse: the moment of maximum discomfort is the moment they lock in a permanent loss and remove themselves from the recovery that follows.

The third is capitulation from complexity. Morningstar's data shows the return gap is smallest for allocation funds — balanced and target-date funds that combine asset classes into one holding. It is largest for specialised, single-sector funds. The more decisions an investor is required to make, the more decisions go wrong. Complexity multiplies opportunities for error.

The fourth is over-trading. Frequent adjustment carries transaction costs, tax costs, and the compounded cost of every decision that turns out to have been better left unmade. Activity, by itself, is not the same as attention. It is often its opposite.

None of these behaviours reflects a failure of intelligence. They reflect the ordinary responses of an intelligent person to a market that presents itself as urgent, threatening, or full of opportunity that must be seized now. The market is designed to produce these feelings. The disciplined response is the counterintuitive one.

Why the Principles are built around this

The Investment Principles that guide portfolio construction at EGU are not a description of what a portfolio should hold. They are a description of what an investor should be able to hold onto.

Long-horizon wealth is built by owning productive assets — equities, real assets, and the return streams that come from them. Owning these assets, on paper, is easy. Holding them through the moments when they are unpopular, or when a more recent performer looks obviously better, is where returns are made or lost.

Genuine diversification is a defence against precisely this failure. A portfolio built on independent return drivers — across asset class, geography, and manager — never has all its holdings performing at once. Some are always disappointing. The temptation to trade toward the recent winner and away from the recent laggard is constant. A framework that treats material deviation, not the calendar, as the trigger for change is a framework that resists that temptation.

Cost and tax discipline compounds in the same direction. Every rebalance, every switch, every reweight carries a cost. Portfolios that trade less accumulate more. The Principles are explicit on this point: rebalancing runs through cashflow where possible, and gains are realised when the client chooses to exit, not through overtrading or manager rotation.

The practical form of discipline

Discipline is not the absence of emotion. It is the presence of structure that limits how much emotion can affect the portfolio.

In practice, this looks like: a written statement of mandate to which the portfolio is held; a defined range of holding weights outside of which action is required and inside of which action is refused; a cadence of review that is planned in advance rather than triggered by market events; a documented reason for every trade; and an adviser whose role is partly to be the person who has already thought about what to do, before the market makes it feel urgent.

None of this is exciting. That is the point. Excitement, in an investment context, is usually the emotion that precedes a decision the investor will later regret.

The reversal

Graham's observation was that the investor's chief problem is himself. The corollary is that the investor's best ally is also himself — if he arranges his affairs so that his worst impulses have less to act on.

The portfolio that survives the moments a market presents as decisive is the portfolio built on a framework that treats those moments as ordinary. Restraint, not conviction, is the durable source of long-term returns.

The principles are simple to state and demanding to apply. The application is what EGU does.

If you would like to review how your portfolio is structured to hold through the moments markets present as decisive — and whether the framework around it protects against the ordinary responses that erode returns — we welcome the conversation.

Ben Wieland
Partner, Wealth Manager

1300 102 542 | 0423 710 820
ben@egu.au

Sources

This is general advice. It does not take account of your objectives, financial situation, or needs, and is not a substitute for advice that does. Before acting on anything in it, consider whether it suits your circumstances, and consider the relevant Product Disclosure Statement.

Ben Wieland