Insight

Maintaining Portfolio Strength: The Importance of Diversification, Alternative Investments, and International Markets for Australian Investors

June 17, 2025

Article by

Joshua Drake | Private Client Advisor

In today’s increasingly interconnected and volatile global economy, Australian investors face a dynamic landscape shaped by shifting interest rates, fluctuating commodity prices, and evolving geopolitical tensions. Building and maintaining a resilient investment portfolio requires more than just relying on local equities and property. To withstand market shocks and capture growth opportunities, diversification, exposure to alternative investments, and access to international markets have become essential components of a sound investment strategy.

Diversification: Reducing Risk and Enhancing Returns

Diversification is a fundamental principle of investing that involves spreading investments across various asset classes, sectors, and geographies to reduce exposure to any single risk. For Australian investors, the domestic market presents a relatively concentrated profile, heavily weighted toward financials and resources. This sector concentration can leave portfolios vulnerable to sector-specific downturns—such as declines in iron ore prices or regulatory changes in banking.

By diversifying across asset classes—such as equities, fixed income, property, and cash—investors can smooth returns over time. Within equities, diversification across industries and company sizes further reduces portfolio volatility. For example, including technology, healthcare, and consumer sectors alongside traditional mining and banking stocks can help balance performance across economic cycles.

Importantly, diversification doesn’t just lower risk; it can also enhance long-term returns. A well-diversified portfolio is better positioned to capture upside from different areas of the market when conditions change.

The Role of Alternative Investments

While traditional asset classes form the foundation of most portfolios, alternative investments often have lower correlations to traditional stock and bond markets, providing additional sources of return and resilience, especially during periods of market stress. They can also offer unique opportunities for growth and income, making them an essential component of a well-rounded portfolio. Alternatives include assets such as infrastructure, private equity, hedge funds, commodities, and real estate investment trusts (REITs).

For Australian investors, infrastructure investments—such as toll roads, utilities, and renewable energy projects—offer inflation-linked income and long-term capital appreciation, often with low correlation to public markets. Similarly, private equity and venture capital offer access to high-growth opportunities outside of the ASX-listed space, though they come with higher risk and lower liquidity.

Hedge funds, through strategies like long-short equity, market neutral, or global macro, can provide downside protection during equity market downturns. Meanwhile, commodities like gold or energy can act as hedges against inflation or geopolitical risk.

Including a carefully selected mix of alternative assets in a portfolio can enhance diversification and improve risk-adjusted returns, particularly when traditional markets are underperforming.

Embracing International Markets

Limiting investments to Australian assets means missing out on significant growth opportunities abroad. The Australian economy makes up just over 2% of global GDP, while many of the world’s most dynamic companies—particularly in technology, healthcare, and consumer goods—are based in the US, Europe, and Asia.

Investing in international equities allows Australians to access leading global businesses such as Apple, Nestlé, or Samsung—companies with global reach, innovation leadership, and diversified revenue streams. It also helps investors avoid the risk of “home bias,” where portfolios are overly reliant on domestic economic performance and currency movements.

Beyond equities, exposure to international bonds, property, and infrastructure assets can also provide diversification benefits. Investing across different markets can reduce currency risk, smooth income streams, and improve overall resilience during local downturns.

Building a Stronger Portfolio

For Australian investors seeking to build long-term wealth and protect against market volatility, the case for diversification, alternative investments, and international exposure is compelling. A well-constructed portfolio that goes beyond the borders of the ASX and beyond traditional asset classes is better positioned to deliver consistent returns, adapt to changing market environments, and capture growth wherever it occurs.

This approach aligns with the concept of the efficient frontier—a foundational idea in modern portfolio theory. The efficient frontier represents the set of optimal portfolios that offer the highest expected return for a given level of risk. Portfolios that lie below this frontier are considered inefficient, as they either take on too much risk for too little return or fail to maximize potential gains for the risk assumed. By diversifying across asset classes, geographies, and investment styles, investors can move their portfolios closer to this frontier, improving their overall risk-return profile.

Ultimately, maintaining portfolio strength is not about predicting the future—it’s about preparing for it. Embracing a broader investment toolkit helps ensure that Australian investors can weather the storms of today and capitalize on the opportunities of tomorrow.