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Insights

Insights

What 2026 taught us about genuine diversification

The first half of 2026 has been a natural experiment in how differently markets respond to the same shock. The Iran conflict, the closure of the Strait of Hormuz, and the surge and subsequent collapse in oil prices produced radically different outcomes depending on where capital was held. The dispersion is striking, and it carries a lesson — though not the one that first appears.

The numbers

Consider the range. The S&P 500 fell 9% below its January peak before recovering. The MSCI EAFE index of developed international markets and the MSCI Emerging Markets index declined between 8% and 12% before rebounding on the ceasefire announcement. By 21 April, the US benchmark was up just 3.85% for the year.

Against that, the Korean KOSPI had gained 51.59% year-to-date — roughly thirteen times the return of the S&P 500. Greece, Poland, the Netherlands, Sweden, and Austria all posted strong gains. The markets that had fallen hardest in the initial shock, and that came into the year with the most to recover, rebounded the furthest.

The wrong lesson, and the right one

The tempting conclusion is that an investor should have been positioned in Korea. This is the wrong lesson, and a dangerous one. Nobody knew in advance that Korea would lead, that Greece would rally, or that the US would lag. The investor who concentrated in the market that gained 51% took precisely the same kind of risk as the investor who concentrated in the market that fell 12% — they simply happened to be right. Concentration that is rewarded is still concentration. Next year, the dispersion will run in directions no one can predict, and the concentrated investor who was right this year is exposed to being catastrophically wrong the next.

The right lesson is the opposite. The very fact that returns dispersed so widely — and so unpredictably — is the argument for never depending on any single market, sector, or source of return. An investor cannot know in advance which market will be tested or which will be rewarded. The prudent response is not to guess better. It is to hold genuinely uncorrelated exposures, so that no single outcome can dominate the portfolio.

What genuine diversification actually means

This is the principle we apply continuously, and it is more demanding than it sounds. Diversification is not achieved by owning many things. It is achieved by owning things that respond to genuinely different drivers.

Two disciplines enforce this. Every position must carry enough weight to influence portfolio outcomes — a holding too small to matter is not diversification, it is decoration. And no single position is allowed to grow so large that concentration overwhelms the benefit. Within those bounds, we diversify across asset class, across geography, and across investment manager, selected so that the portfolio's holdings are exposed to genuinely independent return drivers.

The distinction matters because superficial diversification is so common. An investor holding thirty Australian shares is concentrated, not diversified — every holding is exposed to the same economy, the same currency, the same interest rate cycle. An investor holding a single global index fund that is 60% weighted to the United States is, in practice, holding a portfolio that moves largely with the US market. Genuine diversification requires deliberate exposure to return drivers that do not move together: equities and real assets, domestic and global, growth-oriented holdings alongside capital-preservation strategies that are designed to behave differently when equity markets fall.

Why we construct portfolios this way

The purpose of diversification is not to own the best-performing market each year. It is to ensure that no single market's misfortune — a geopolitical shock, a domestic recession, a sectoral collapse — can disproportionately damage the portfolio. The investor concentrated in the market that fell 12% in 2026 experienced that fall in full. The genuinely diversified investor experienced a fraction of it, with holdings exposed to other drivers cushioning the decline and participating in recoveries elsewhere.

This is also why we are cautious about home-country bias. Many Australian investors hold portfolios heavily concentrated in domestic equities — a market that represents less than 2% of global market capitalisation and is heavily weighted toward financials and resources. That concentration felt comfortable for many years. The events of 2026 are a reminder that comfort and prudence are not the same thing.

The enduring lesson

The dispersion of returns in 2026 will narrow. Markets will converge and diverge again in patterns no one can reliably predict. What will not change is the underlying principle: an investor cannot know in advance which source of return will be tested, so the prudent course is to hold genuinely uncorrelated exposures across many of them.

Genuine diversification does not protect against every loss. It protects against the concentrated loss — the one that does lasting damage because too much was riding on a single outcome.

If you would like to review how genuinely diversified your portfolio is — not how many holdings it contains, yet how independent their return drivers are — 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