Morgan Stanley warns bonds lose hedge status as inflation stays elevated
With headline inflation at 3.8 per cent, the traditional 60/40 portfolio strategy has broken down, leaving investors with income but no capital protection during market shocks.
Morgan Stanley has issued a stark warning that bonds are becoming increasingly unreliable as a hedge against stock market volatility, particularly when inflation remains high. An analysis of 150 years of historical data indicates that the traditional role of bonds as a portfolio shock absorber is diminishing, as stocks and bonds tend to move in the same direction when inflation exceeds a threshold of 2.4 per cent.
The findings suggest that the classic 60/40 portfolio strategy, which allocates 60 per cent to equities and 40 per cent to bonds, has effectively broken down since the stock market peaked in late 2021. While the S&P 500 total return index has surged well above its early-2022 levels, the Bloomberg Aggregate Bond Index has only clawed back to roughly its starting point for that period. The pain has been even more pronounced in long-term bond funds, such as the iShares 20+ Year Treasury Bond ETF, which has been pushed back toward pre-financial-crisis prices.
This divergence in performance is rooted in the Federal Reserve’s aggressive interest rate hikes in response to inflation. Higher yields have made bonds more attractive for income generation, but they have simultaneously hammered bond prices. The basic mechanics of bond pricing dictate that when yields rise, older bonds with lower payouts become less attractive, causing their prices to fall. This dynamic also pressured equities by making future profits worth less in today’s dollars and tightening financial conditions across markets.
Consequently, in 2022, stocks and bonds fell together rather than offsetting each other, a scenario that undermines the stability of balanced portfolios. Morgan Stanley identified that inflation is the primary driver of this correlation. When inflation moves above 2.4 per cent, the negative correlation that typically cushions portfolios disappears, replaced by positive correlation where both asset classes decline simultaneously, thinning the safety net for investors.
With headline inflation currently running at 3.8 per cent, well above the critical threshold, bonds may provide income but are unlikely to offer capital protection during shocks driven by inflation, oil prices, or fiscal stress. However, the firm noted that if the next market shock stems from weaker growth or recession fears, bonds may still perform their traditional role of rising in price as yields fall, offering the cushion investors expect in a growth scare.
