International Investing: Why You Should Own Stocks Beyond the US

Published: March 15, 2026 | Category: International Investing | Reading time: 6 min

If you've built a portfolio entirely out of US stocks, you're not alone — but you may be leaving serious opportunity on the table. American investors have a well-documented tendency to load up on domestic equities and ignore the rest of the world. That tendency has a name: home bias. And over the long run, it can quietly erode the quality of your returns while concentrating more risk than most people realize.

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Disclaimer: This article is for informational and educational purposes only. Nothing here constitutes financial advice, investment advice, or a recommendation to buy or sell any security. All investing involves risk, including the possible loss of principal. Past performance is not indicative of future results. Consult a qualified financial professional before making investment decisions.

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The US Is Big — But It's Not the Whole Market

The US stock market is the largest in the world, representing roughly 60% of total global market capitalization. That's enormous. But think about what that number actually means: 40% of investable equity value exists outside the United States. That's not a rounding error — it's trillions of dollars in companies, industries, and economies that a US-only portfolio completely ignores.

International stocks span some of the world's most important businesses: European luxury goods giants, Japanese automakers and robotics firms, South Korean semiconductor leaders, Australian resource companies, and Swiss pharmaceutical behemoths. When you stay domestic-only, you're not being conservative — you're being selective in a way that may not reflect sound reasoning.

Value investors, in particular, have long recognized that limiting your search to a single market limits your ability to find genuine bargains. Benjamin Graham himself looked internationally. The logic is straightforward: the more securities you can evaluate, the more likely you are to find one priced well below its intrinsic value.

What Home Bias Actually Costs You

Home bias feels comfortable. You know US companies. You see their ads, use their products, follow their quarterly earnings. Familiarity breeds confidence. But familiarity isn't the same as investment advantage — and it's not the same as value.

Research consistently shows that US investors hold far more domestic stocks than their share of global market cap would justify. If global markets were your only guide, a rational allocation would put roughly 40% of your equity exposure in non-US names. Most American investors keep 80%, 90%, or even 100% in domestic stocks.

The cost shows up in two ways. First, you miss cycles when international markets outperform. The 2000s, for example, were a lost decade for US equities — but international developed and emerging markets put up strong numbers during much of that stretch. Second, you carry concentrated single-country risk. Your returns become tightly correlated with US economic cycles, US corporate earnings, and US policy decisions. A well-diversified global portfolio reduces that dependency.

The Case for International Diversification

Diversification isn't just about spreading risk across sectors or asset classes — it's about spreading it across geographies, economies, and currencies. Different countries are at different points in their economic cycles at any given time. When the US is slowing, Germany or India or Brazil might be expanding. Owning a slice of all of it smooths the ride.

The standard benchmark for developed international exposure is the MSCI EAFE Index (Europe, Australasia, and Far East). It covers large- and mid-cap stocks across 21 developed markets outside the US and Canada. When people talk about adding international developed market exposure, EAFE is the reference point. ETFs like VEA (Vanguard FTSE Developed Markets) and EFA (iShares MSCI EAFE) are the most common low-cost vehicles to track this exposure.

From a valuation standpoint, international developed markets have frequently traded at meaningful discounts to US equities on metrics like price-to-earnings and price-to-book. For a value investor, that gap deserves attention. Cheap isn't always good — but persistently elevated valuations in the US relative to international peers is at minimum a reason to pay attention to what's available abroad.

What International Stocks Bring to a Value Portfolio

Value investing is about buying assets for less than they're worth. The tools don't change when you cross a border — earnings power, book value, free cash flow, dividend history, competitive moat — all of it still applies. What changes is the universe of companies you're evaluating.

International exposure also brings sector diversification you can't easily replicate domestically. European markets are heavily weighted toward financials, consumer staples, and industrials. Japan offers deep exposure to industrials and technology hardware. Resource-rich economies like Australia and Canada provide natural commodity linkages. These sector tilts behave differently than the tech-heavy S&P 500, which means international holdings tend to reduce correlation in your portfolio.

Dividends are another factor worth noting. Many international developed market companies — particularly in Europe and Asia — have cultures of distributing higher proportions of earnings as dividends. For income-oriented value investors, the international dividend yield has historically been more attractive than what US large-caps provide.

Common Objections — and Why They Don't Hold Up

"International investing is too risky." There's risk in any market. The question is whether the risk is compensated. Concentration in US equities is its own form of risk — it's just a familiar one.

"The dollar is strong, so international returns look worse." Currency effects are real and we'll cover them in depth in another post. But over long periods, currency tailwinds and headwinds tend to average out. More on that shortly.

"I don't know enough about foreign companies." That's fair — and it's exactly why diversified ETFs like VEA and EFA exist. You don't need to pick individual foreign stocks to get the benefits of international exposure.

"US companies already have international revenue." True — many S&P 500 companies generate 40–50% of revenue abroad. But that's not the same as owning foreign-listed equities. You're still exposed to US valuations, US dollar earnings, and US market sentiment when you hold only domestic stocks.

How Much International Exposure Makes Sense?

There's no universal answer, but a reasonable starting framework for a diversified equity portfolio is 20–40% international exposure, with the mix tilted toward developed markets. Some investors with longer time horizons or higher risk tolerance lean into emerging markets for growth potential — but that's a separate discussion.

The key is intentionality. Don't avoid international stocks because they feel unfamiliar. Don't overweight them because of a hot streak. Build a position sized to your conviction and your broader portfolio goals, and review it periodically.

Looking for international stocks trading at discount valuations? The Value of Stock Screener lets you filter global equities by valuation metrics so you can find where value is concentrated — whether that's in the US or anywhere else in the world.

Actionable Takeaways

• Recognize the cost of home bias. US investors who hold only domestic stocks are missing roughly 40% of global market cap and concentrating single-country risk unnecessarily.
• Use MSCI EAFE as your developed market benchmark. ETFs like VEA and EFA offer low-cost, diversified exposure to developed international markets.
• Apply your value framework globally. Price-to-earnings, price-to-book, and dividend yield work the same way in Tokyo, Frankfurt, and Sydney as they do in New York.
• Start with a 20–40% international allocation target and build toward it deliberately, tilting toward developed markets first.
• Don't let familiarity substitute for analysis. Comfort with domestic names is not a valuation argument.

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This article is for educational purposes only and does not constitute financial or investment advice. International investing involves additional risks including currency fluctuation, political instability, and differences in accounting standards. Always do your own research and consult a financial professional before investing.

— Harper Banks, financial writer covering value investing and personal finance.