For decades, the 60/40 portfolio was one of investing's simplest solutions. Hold 60% in shares for growth and 40% in bonds for stability. When shares struggled, bonds were often there to cushion the blow.
The challenge is that this relationship isn't guaranteed.
Since 2022, investors have had a harsh reminder that shares and bonds can fall together. Inflation has been the culprit, and bond markets are once again raising questions investors shouldn't ignore.
The real story isn't that bonds have performed poorly over the last few years. The more interesting question is why bond yields are still rising even as economic growth appears to be slowing.
Understanding that answer is critical for investors who continue to rely on bonds as the defensive part of their portfolio.
Why Are Bond Yields Rising in a Slowing Economy?
At first glance, rising bond yields don't make much sense.
Economic growth is slowing in many countries. Australian consumers are under pressure. Housing markets have softened from their peaks. Historically, a slowing economy would usually be associated with lower bond yields.
Instead, many long-term bond yields have moved higher.
There are several possible explanations. The first is inflation. Investors may believe inflation will remain higher than central banks would like. If inflation persists, bond investors demand higher yields to compensate for the loss of purchasing power.
The second is interest rates. If investors expect central banks to keep rates higher for longer, bond yields will typically reflect that view.
The third is government borrowing. Governments around the world continue to run large deficits and issue increasing amounts of debt. When supply rises, investors often demand higher compensation to absorb the increase.
Finally, investors may simply require a higher term premium. Lending money to governments for 10, 20 or 30 years involves uncertainty. The more uncertain the future appears, the more compensation investors demand.
The key point is that higher bond yields don't necessarily signal stronger growth. They can also reflect inflation concerns, fiscal pressures and growing uncertainty.
The Pros and Cons of Bond Investing Today
For investors looking at bonds today, there is both encouraging and challenging news.
The encouraging news is that yields are now far more attractive than they were a few years ago.
Australian long-term government bonds can offer yields over 5%, a significant improvement on the ultra-low yields available during the previous decade.
The challenge is that higher starting yields don't eliminate risk.
If yields continue to rise, bond prices can continue to fall. Investors who believed bonds would immediately return to their traditional role as a portfolio stabiliser may find the journey more volatile than expected.
This is particularly important because many portfolios still assume bonds will reliably offset equity weakness.
That assumption deserves closer examination.
Why the 60/40 Portfolio Struggles During High Inflation
The traditional 60/40 portfolio works best when inflation is low and stable.
In that environment, economic weakness hurts corporate profits but usually helps bonds, as central banks cut interest rates.
Inflation changes the equation.
When inflation becomes the dominant market concern, both shares and bonds can suffer simultaneously. Equities face pressure from higher costs and lower valuations. Bonds face pressure from rising yields and inflation expectations.
That's exactly what investors experienced in 2022.
It doesn't mean the 60/40 portfolio is dead. Far from it. It does mean investors need to recognise that diversification works differently in inflationary environments.
Alternative Asset Classes for Better Portfolio Diversification
If inflation remains a recurring market theme, investors may need to think more broadly about diversification.
Cash has become more attractive now that interest rates are no longer near zero. Inflation-linked bonds can provide explicit protection against rising prices. Commodities often benefit from inflationary pressures, particularly when energy prices are involved.
Gold can act as a hedge against both inflation concerns and broader economic uncertainty. Certain defensive equities with strong pricing power may also prove more resilient than the broader market.
Some investors may also consider alternative or absolute-return strategies that are less dependent on rising share and bond markets.
None of these is a perfect solution. Every asset class has its own risks.
The objective isn't to find a silver bullet. It's to build portfolios that are less dependent on a single economic outcome.
How to Protect Your Portfolio Against Persistent Inflation
Markets spend a lot of time debating whether the next move in interest rates will be up or down.
The better question is whether investors are prepared for a world where inflation remains more persistent than expected.
Bond markets appear to be signalling that the inflation story may not be finished. Rising yields suggest investors continue to demand compensation for uncertainty, inflation risk and growing government borrowing requirements.
That doesn't mean bonds should be abandoned. In fact, today's higher yields make them much more attractive than they were a few years ago.
But it does mean investors should think carefully about the role bonds play in their portfolio and whether their diversification assumptions still hold.
In a world where inflation can cause both shares and bonds to fall together, the challenge isn't finding the perfect asset class. It's building a portfolio that can withstand more than one economic scenario.
Uncertain if your portfolio is built to handle rising yields and persistent inflation? Talk to our team or book a meeting today to review your current asset allocation and discuss personalized strategies designed to protect and grow your wealth in changing market conditions.
