Portfolio Diversification: Is Cash King?

As markets face elevated volatility and policy uncertainty, some investors may be tempted to retreat into cash. After all, deposit rates in Western economies remain higher than during much of the 2010s, and concerns about trade tensions and inflation are keeping market sentiment cautious. But history and data suggest that cash is rarely the optimal choice for multi-asset investors—even during periods of uncertainty.

Economic Expansion: Equities Still Compelling

Over the next 12 to 18 months, a slowing—but still expanding—global economy appears likely. While tariffs may moderate consumer demand, resilient household and corporate balance sheets should keep activity and labor markets fairly strong. In this environment, Western central banks could gradually ease policy rates, yet rates would remain above the historically low levels of the past decade. Cash may seem appealing, but equities are likely to offer better returns.

Even if equity price gains are modest due to stretched valuations, total returns—including dividends and buybacks—should exceed what cash offers today. European stocks, in particular, provide attractive income streams that support multi-asset portfolios.

Downturns: Bonds Outshine Cash

In a scenario where economic news triggers a market drawdown, cash might temporarily outperform equities. Yet core bonds are likely a more effective hedge. As central banks cut rates in response to slower growth, the yield on cash deposits would fall, while existing bond prices would rise, offering meaningful returns. For example, a 200-basis-point decline in the US 10-year Treasury yield could produce a 20% total return over a year—far surpassing what cash can deliver.

Stagflation: Alternatives Take the Lead

If inflation proves stickier than expected, as in 2022, traditional bonds and equities could struggle. Cash may seem safe, but alternatives—such as real assets (infrastructure, timber), commodities, or hedge fund strategies—can provide superior performance. In fact, global macro hedge funds returned nearly 10% during 2022, significantly outperforming cash in a high-inflation environment.

The Takeaway: Diversification Over Cash

While cash may feel secure in the face of uncertainty, multi-asset portfolios consistently outperform it over time. Historical data since 1990 show that a 60/40 portfolio of equities and government bonds beat cash more than 70% of the time over a one-year horizon—and always over three years. Average excess returns are meaningful: roughly 7 percentage points over one year, and more than 20 points over three years.

For investors navigating the uncertain landscape of 2025, diversification remains the most reliable strategy. A balanced mix of global equities, fixed income, and inflation-protecting assets—across both public and private markets—offers a better chance of growth and risk mitigation than retreating to cash.