For decades, American investors have had a home country bias, putting most or all of their portfolio into US stocks and calling it diversified. The United States is, after all, the largest and most liquid equity market in the world. Why look elsewhere?
The answer is straightforward: the US represents roughly 60 percent of global market capitalization, which means a portfolio invested entirely in domestic stocks is ignoring the other 40 percent of the world’s investable assets. International ETFs offer a simple, low-cost way to capture that global opportunity, often in a single fund. Understanding how they work and why they belong in a well-built portfolio is one of the more important steps any long-term investor can take.
What Is an International ETF?
An international ETF is an exchange-traded fund that holds stocks from countries outside the investor’s home market. For US-based investors, this means exposure to companies listed on exchanges in Europe, Asia, Latin America, Africa, and beyond. Some international ETFs cover the entire non-US world in a single fund. Others focus on specific regions, development categories, or individual countries.
The mechanics are identical to any other ETF. You buy shares through your brokerage account, the fund holds the underlying foreign stocks, and you receive proportional exposure to the performance of those international markets without needing to open foreign brokerage accounts, convert currency manually, or research individual companies listed in dozens of different countries.
Developed vs. Emerging Markets
One of the most important distinctions in international investing is the difference between developed and emerging markets.
Developed markets include countries with advanced economies, stable political systems, and highly liquid financial markets. Examples include the United Kingdom, Japan, Germany, France, Australia, Canada, and Switzerland. These markets tend to offer lower volatility and higher corporate governance standards than their emerging counterparts, though their growth potential is generally more modest.
Emerging markets include countries in earlier stages of economic development with faster-growing economies and younger, expanding consumer populations. China, India, Brazil, South Korea, Taiwan, and Mexico are among the largest emerging markets. The potential for higher long-term returns is real, but so is the exposure to greater political risk, currency volatility, and regulatory uncertainty.
Some international ETFs hold only developed market stocks. Others include only emerging markets. Total international funds hold both in proportion to their global market weights.
Why International Diversification Matters
The case for international exposure is not just theoretical. Different markets move in different cycles. The US market has been the world’s dominant performer over much of the past decade, but history shows clearly that leadership rotates. There have been extended periods, including the entire decade of the 2000s in the United States, where international stocks significantly outperformed domestic ones.
Holding international exposure does not guarantee outperformance. It guarantees something equally valuable: participation in whichever part of the global market happens to be leading at any given time.
Correlation and Portfolio Stability
International stocks have historically had lower correlation with US stocks than US stocks have with each other. In practical terms, this means that when US markets experience significant drawdowns, international markets do not always move in lockstep. The diversification benefit shows up most clearly during periods of US-specific economic stress or currency weakness.
Currency exposure adds another layer of diversification. When the US dollar weakens relative to other currencies, the value of international holdings measured in dollars increases. For US investors who are inherently exposed to dollar-denominated assets in their savings, wages, and home, international ETFs provide a natural hedge against dollar depreciation over the long term.
Valuation Differences
At any given moment, international markets often trade at meaningfully different valuation multiples than US markets. When US equities are priced at historically elevated levels relative to earnings, international markets can offer the same long-term return potential at a lower starting price. Investors who allocate globally benefit from this spread of entry points across different valuation environments.
Types of International ETFs to Know
Understanding the major categories helps you choose the right international fund for your portfolio goals.
Total International Stock ETFs
These funds hold stocks from every country outside the US, weighted by market capitalization. They provide the broadest possible international exposure in a single fund and are the most common choice for investors who want simple, diversified global coverage without making specific regional bets. Expense ratios on the largest total international funds are remarkably low, often below 0.10% annually.
Developed Market ETFs
Funds in this category hold stocks only from developed economies, excluding emerging markets. They offer smoother ride characteristics than funds that include emerging markets, making them suitable for investors who want international exposure with less volatility tolerance for the political and economic risks that come with developing economies.
Emerging Market ETFs
These funds hold stocks exclusively from developing economies. They carry higher risk and higher potential reward than developed market funds and are typically used as a satellite allocation within a broader international position rather than a core holding. Expense ratios on emerging market ETFs are generally higher than those on developed market funds, reflecting the additional complexity of accessing these markets.
Single-Country and Regional ETFs
For investors who want targeted exposure to a specific country or region, funds focused on places like India, Japan, Europe, or Southeast Asia are widely available. These are more concentrated and carry more idiosyncratic risk than broader international funds, but they allow for tactical tilts toward markets where an investor has a specific view.
What to Consider Before Investing in an International ETF
A few practical factors deserve attention when evaluating international funds.
Expense Ratio
International ETFs generally carry higher expense ratios than their US counterparts, reflecting the cost of accessing foreign markets and managing currency. Broad developed market funds are among the cheapest in this category. Emerging market and single-country funds tend to cost more. Keeping costs as low as possible is the same priority it is in any other area of ETF investing.
Currency Risk
International stocks are denominated in foreign currencies. When those currencies strengthen against the dollar, your returns in dollar terms are boosted. When they weaken, your returns are reduced. Some international ETFs offer currency-hedged versions that eliminate this exposure, though hedging costs money and removes both the risk and the potential benefit of currency movement. Most long-term investors accept unhedged exposure as a feature rather than a bug.
Tax Treatment of Foreign Dividends
Dividends from foreign stocks are subject to foreign withholding taxes, which vary by country. In taxable accounts, US investors can often claim a foreign tax credit to offset this. In tax-advantaged accounts like IRAs, the credit is not available, which slightly reduces the net return from international holdings held in retirement accounts. This is a nuance worth understanding but rarely a reason to avoid international exposure altogether.
How Much International Exposure Makes Sense?
There is no universal answer, but most evidence-based investors hold international stocks in proportion to their global market weight, somewhere between 30 and 40 percent of total equity exposure. Others choose a smaller allocation, accepting a tilt toward the home market while still getting meaningful global diversification.
What is clear from decades of market data is that zero international exposure is a bet on the US market continuing to outperform the rest of the world indefinitely. That bet has paid off in recent years. It is not guaranteed to continue.
A single, low-cost total international ETF alongside a US total market fund gives most investors all the global coverage they need. One fund. Every country. The world in a single ticker.
This post is for informational and educational purposes only and does not constitute financial or investment advice. Every investor’s situation is different. Consider speaking with a qualified financial advisor before making investment decisions.