International equities open up investment opportunities that extend well beyond those available in domestic markets. They broaden diversification by spreading risk across different countries, industries, and economic conditions. Below, we explore how they work and the role they can play in a diversified portfolio…
International equities form a core part of global investing and sit alongside domestic and Australasian shares within a diversified portfolio. They include publicly traded companies across both developed and emerging markets, offering diversification across countries, regions, and industries.
International equities provide a fundamental diversification benefit within a portfolio asset allocation by expanding exposure beyond the return drivers of any single domestic market. Different economies are influenced by their own economic conditions, government policies, demographics, and growth drivers. This means that when domestic equity markets are underperforming, possibly due to sector concentration, political risk, or cyclical headwinds, international markets may be generating positive returns, reducing overall portfolio volatility. For New Zealand investors, this broader global exposure helps offset the limitations of a small and concentrated local market.
Beyond diversification, international equities offer exposure to growth profiles and sector compositions that are less represented in New Zealand. Emerging markets, for instance, provide access to faster-growing economies across Asia, Latin America, and Africa, where rising middle classes and expanding consumption underpin long-term earnings growth.
Developed markets also provide access to global leaders in technology, healthcare, industrials, and consumer brands, sectors that play a limited role in the New Zealand market. This includes companies at the forefront of major areas of innovation such as artificial intelligence, advanced healthcare, digital infrastructure, and space technology, providing investors with exposure to growth opportunities that can be difficult to access through local markets alone.
While international equities offer significant benefits, they also carry risks. Currency movements, geopolitical events, regulatory changes, and differences in economic conditions can affect returns, while emerging markets may experience higher levels of volatility than developed markets.
The evidence consistently supports meaningful international equity allocation. Long-run studies suggest that globally diversified portfolios can improve risk-adjusted outcomes because different markets often perform differently over time, helping to reduce overall portfolio volatility. This reinforces the role international equities can play in strengthening long term portfolio resilience and supporting a more balanced overall investment mix.
In summary, international equities broaden the opportunity set for investors by providing access to a wider range of markets, sectors, and growth drivers than those available domestically. They help reduce reliance on any single economy, improve diversification, and provide exposure to industries that are under-represented in New Zealand. Together, these characteristics make international equities an important component of a well constructed investment strategy.
For more on how international equities fit within a broader investment mix, refer to our Asset Allocation article and the other articles on asset classes in the Insights section of our website.
