If you turn on the finance news or open any financial paper today, the word “inflation” is everywhere. After three decades of hibernation, it would appear the inflation genie might be out of the bottle.
While there are a multitude of causes – underinvestment in fossil fuels, COVID-19 related supply disruptions, border closures impacting employment, fiscal stimulus driving consumer demand etc – the key question investors must ask themselves is this: "What does it mean for me and my portfolio?"
The challenge with predicting inflation
The challenge with predicting inflation is that the world is complex. It's not like physics or chemistry which are subject to immutable laws.
Economies are often referred to as complex adaptive systems. Such systems are more than the sum of the parts. They can’t be reduced to simple inputs because everything affects everything else through a complex web of interactions.
Complex adaptive systems are also subject to non-linear outcomes, meaning small chance events can have huge impacts on end results. It's little wonder the track record of economist predictions aren't great.
Are we experiencing déjà vu?
A relevant example comes from the book, ‘Freedoms Forge’ about American business and World War II.1 At the conclusion of the War the world's top economists expected rampant inflation and a US recession or depression.
Ten million American soldiers would be returning to empty factories as 'war manufacturing' had grown to c50% of GDP. US debt to GDP sat at record levels, and price caps implemented during the War were about to be abolished.1
In actuality, there were three jobs available for every returning veteran, US stock prices surged, and for the next two decades US GNP grew at 4% p.a. – the highest economic growth seen in human history.1
Lessons from history
2. Inflation has a greater impact on fixed rate investments
Inflation tends to have the greatest impact on fixed rate investments, particularly when the yields on offer are low.
When inflation emerges, or is anticipated, investors demand higher returns to compensate for their loss of purchasing power, driving bond yields higher and the respective bond prices lower.
As government bond yields rise, investors demand higher returns for more risky assets like equities and corporate debt.
While this may eventuate, the buffer between the yield on government bonds and the earnings yield on the S&P500 is currently near record highs. This suggests that even if bond yields do rise due to inflation, it doesn’t necessarily imply stock prices must fall.
The long-term chart below highlights the current relationship between the S&P500 earnings yield and US 10-year bonds.
Building a portfolio to withstand the impact of inflation
Given the unpredictable nature of inflation and its potential impact on corporate profitability and markets, the best advice is to build an equities portfolio that can weather its impact over the medium term.
Businesses that are capital light, have a tailwind of demand, and possess the ability to raise prices will be well placed to withstand the emergence of inflation. A strong balance sheet will immunise the company from any rate rises associated with inflation.
While we can’t be certain of a new era of inflation, we can and must build portfolios to tolerate a variety of unexpected economic outcomes – inflation being one of them.
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