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Why the classic 60/40 investment strategy is failing modern investors

Decades of trust in the 60/40 portfolio are crumbling. With stocks outperforming bonds like never before, is it time to abandon the old playbook?

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Why the classic 60/40 investment strategy is failing modern investors

The classic 60/40 investment strategy—60% stocks and 40% bonds—is losing its appeal among financial experts. Wall Street veteran Jim Paulsen argues that this traditional mix no longer offers the best balance of risk and return. Recent market trends and economic shifts have left many questioning its effectiveness in today's conditions.

For decades, the 60/40 portfolio was seen as a reliable way to generate steady returns while protecting against market downturns. But according to Morningstar, its performance from 2020 to 2025 marked the worst stretch in nearly 150 years. Bonds, once a stabilising force, struggled to offset stock volatility as equities surged in a prolonged bull market.

Over the past five years, data shows a 100% stock portfolio (such as the S&P 500) delivered an annualised return of around 12.5%. In contrast, a traditional 60/40 mix returned just 8.2% over the same period. This gap widens further in hypothetical no-recession scenarios, where an all-equity approach could yield about 17% annually, compared to 11–12% for the balanced strategy.

Paulsen points to broader economic changes to explain the shift. Between 1940 and 1990, the U.S. economy was in recession roughly 17% of the time. Since 1990, that figure has dropped to 8%, reducing the need for heavy bond exposure. With fewer downturns expected, he suggests retirees and long-term investors should now consider holding a much higher share of equities.

Historical trends support this view. Since 1926, a 100% stock portfolio has averaged 12% annual returns, while the 60/40 mix delivered 9.5%. The gap has grown in recent decades as bonds' ability to diversify risk weakened, particularly amid high inflation and rising interest rates.

The decline of the 60/40 model reflects deeper changes in market behaviour and economic stability. With recessions becoming less frequent, equities now offer stronger returns with reduced downside risk. Investors looking to adapt may need to rethink long-held assumptions about portfolio balance.

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