Alternative Investments: Gold, Commodities, and Real Assets

The traditional investment portfolio of stocks and bonds has served long-term investors well for decades, but the assumption that two asset classes provide sufficient diversification has been questioned in periods when both fell simultaneously, as happened in 2022 when rising interest rates caused bonds to decline alongside equities. Alternative investments, broadly defined as anything outside traditional public equities and investment-grade fixed income, have attracted growing interest from individual investors seeking genuine diversification.

Gold, commodities, real estate, infrastructure, private equity, and other real assets behave differently from stocks and bonds in ways that can reduce portfolio volatility and provide protection against specific risks like inflation. But alternative investments also carry their own risks, costs, and complexities that make blanket recommendations difficult.

This guide explains the major categories of alternative investments available to individual investors, what each provides in terms of return, risk, and correlation to traditional assets, and how to evaluate whether any of them belong in your portfolio.

Gold: The Original Alternative Asset

Gold has served as a store of value, inflation hedge, and safe haven asset for thousands of years, and it retains a role in modern investment portfolios despite not producing income and having limited industrial use relative to its price. The investment case for gold rests primarily on three characteristics: its negative to zero correlation with equities in risk-off environments, its historical preservation of purchasing power over very long periods, and its limited supply that no central bank can print more of.

Gold performs best during periods of financial stress, geopolitical uncertainty, and currency debasement. During the 2008 financial crisis, gold rose while equities fell dramatically. During 2022, gold held its value better than both stocks and bonds. These diversification properties make a small gold allocation, typically 5 to 10 percent of a portfolio, defensible from a risk management perspective.

Access to gold for individual investors is available through multiple vehicles. Physical gold bars and coins provide direct ownership but require secure storage. Gold ETFs like SPDR Gold Shares (GLD) and iShares Gold Trust (IAU) track gold prices at low cost without storage concerns. Gold mining company stocks provide leveraged exposure to gold prices with additional company-specific risk.

Commodities: Inflation Protection with Volatility

Commodities, including energy (oil, natural gas), metals (copper, aluminum), and agricultural products (corn, wheat, soybeans), have historically provided the strongest direct inflation protection of any major asset class because commodity prices are themselves inputs to inflation indices. When inflation rises, commodity prices typically rise as well, making them a natural hedge.

Individual commodity prices are highly volatile and driven by supply and demand dynamics that are difficult to predict. Oil prices can fall 50 percent or rise 100 percent within a year based on geopolitical events and OPEC decisions. Agricultural commodities depend heavily on weather patterns and are subject to sudden price shocks from droughts or floods. This volatility makes commodity investing uncomfortable on an individual commodity basis.

Diversified commodity funds spread exposure across multiple commodities, reducing the volatility of individual commodity price swings while maintaining the inflation-protection properties of the asset class. Invesco Optimum Yield Diversified Commodity Strategy (PDBC) and similar broadly diversified commodity ETFs provide this exposure at reasonable cost.

Infrastructure: Stable Income with Inflation Linkage

Infrastructure investments include toll roads, airports, utilities, water systems, pipelines, and other long-lived physical assets that provide essential services with regulated or contracted revenue streams. Infrastructure assets often have explicit or implicit inflation linkage because their contracts or regulatory frameworks allow revenue increases with inflation, providing genuine inflation protection with lower volatility than commodities.

Listed infrastructure ETFs provide access to publicly traded infrastructure companies without the minimum investment and illiquidity of private infrastructure funds. iShares Global Infrastructure ETF (IGF) and Brookfield Infrastructure Partners (BIP) are examples of publicly accessible infrastructure investments. These investments often provide dividend yields of 3 to 5 percent with moderate inflation sensitivity.

Private infrastructure investments through real asset funds or direct investment require much larger minimums and accept illiquidity in exchange for access to assets not available in public markets. Major institutional investors have substantially increased infrastructure allocations over the past decade, and individual investors now have growing access through interval funds and closed-end structures.

How Much Alternative Allocation Makes Sense

The appropriate allocation to alternative investments depends on your specific goals, risk tolerance, and portfolio context. For most individual investors with straightforward retirement goals, a traditional stock-bond portfolio supplemented by real estate exposure through REITs is sufficient. Adding commodities, gold, or infrastructure beyond this baseline provides incremental diversification benefits at the cost of complexity and sometimes higher fees.

A common approach among investors who want alternatives exposure is to allocate 5 to 10 percent of the overall portfolio to each alternative category they include, maintaining the dominant allocation in traditional stocks and bonds. A portfolio with 55 percent global equities, 30 percent bonds, 10 percent real estate, and 5 percent gold has modest alternative exposure with meaningful diversification benefit.

The most important consideration before adding alternatives is whether the addition genuinely reduces portfolio risk or improves risk-adjusted returns for your specific situation. Alternatives that are expensive (high fees), illiquid (cannot sell when needed), or poorly understood add complexity without proportional benefit. Stick to alternatives you can explain and access through low-cost vehicles.

Final Thoughts

Alternative investments provide genuine diversification benefits that can improve risk-adjusted returns and provide protection against specific risks like inflation that traditional stock and bond portfolios face. But the benefits come with trade-offs: higher costs in some cases, complexity in others, and the discipline required to maintain alternatives allocations through periods when they underperform traditional assets.

For most individual investors, the most accessible and highest-quality alternatives are REITs for real estate exposure, gold ETFs for safe-haven diversification, and broad commodity funds for inflation protection. These can be added to a traditional portfolio without specialized knowledge or large minimum investments.

Add alternatives deliberately, with clear understanding of what each provides. Do not add complexity for its own sake.