International stocks have surprised many investors recently, especially those who grew accustomed to U.S. leadership over much of the past decade. While no single factor explains short-term market leadership, several practical forces—valuations, currency moves, sector mix, and interest-rate expectations—have helped many developed international markets outpace U.S. stocks at times.
Just as important: government finances (deficits and debt levels) can influence inflation expectations, interest rates, and currencies—each of which can ripple through equity returns. Let’s walk through the major drivers in plain English.
1) Market leadership is cyclical
The U.S. has enjoyed long stretches of outperformance historically, often driven by innovation, strong corporate profitability, and deep capital markets. But leadership rotates. After a sustained period of strength, a market can become more expensive relative to peers, and expectations become harder to beat.
International markets—particularly developed markets like parts of Europe and Japan—can then benefit when conditions shift even modestly (e.g., value stocks do better than growth, or local currencies strengthen).
2) Valuations can give international stocks a “head start”
One of the simplest explanations is also one of the most common: starting price matters.
- U.S. stockshave often traded at higher valuation multiples than many developed international markets, reflecting stronger expected earnings growth and a premium for U.S. quality and innovation.
- International developed stockshave frequently traded at lower valuations, which can leave more room for positive surprise if earnings hold up better than expected.
Lower valuations don’t guarantee better returns—but they can improve the odds of competitive performance over time, especially when the gap gets wide.
3) Currency moves can boost (or reduce) returns
When you invest internationally, your results are influenced by two return streams:
- The return of the international stock market itself (in local currency)
- The change in the currency relative to the U.S. dollar
If the U.S. dollar weakens against foreign currencies, U.S.-based investors may see a tailwind when converting foreign returns back into dollars. If the dollar strengthens, that can be a headwind.
This is a major reason why international performance can look “suddenly better” in certain periods—even if the local market returns aren’t dramatically different.
4) Sector mix: what a market owns matters
Different regions have different market “personalities.” U.S. indexes tend to have substantial exposure to large technology and communication-services companies. Many developed international indexes have more weight in financials, industrials, energy, and consumer staples.
That sector mix matters when:
- interest rates rise or fall,
- energy prices change,
- the market shifts between “growth” and “value” leadership.
In periods when value-oriented sectors or exporters are in favor, developed international markets can look comparatively strong.
5) Deficits and debt: how they relate to markets
Government finances don’t directly dictate stock performance, but they can shape the backdrop for:
- interest rates,
- inflation expectations,
- currency strength,
- investor confidence in long-term fiscal flexibility.
The U.S. vs. other developed countries (high-level comparison)
Many developed countries carry meaningful debt loads—this is not unique to the U.S. However:
- The U.S. runs persistent budget deficits, and itsdebt-to-GDP ratio is highcompared with many developed peers.
- Several developed countries also have high debt (Japan is a frequently cited example), while others maintainlower debt ratios and/or tighter fiscal balances.
- Europe is not one monolith: some countries have relatively stronger fiscal profiles than others, and economic conditions vary widely.
Why markets may care
Here are a few ways deficits and debt levels can influence stock returns indirectly:
- Interest-rate sensitivity:If investors demand higher yields to compensate for fiscal risk or inflation concerns, borrowing costs can rise across the economy. Higher rates often pressure equity valuations, especially for long-duration growth stocks.
- Policy flexibility:Countries with more fiscal “room” may be able to respond more aggressively to downturns or shocks without markets questioning sustainability.
- Currency impacts:If fiscal concerns contribute to a weaker dollar over time, that can enhance dollar-based returns on international investments (though currency moves are unpredictable).
Importantly, fiscal metrics are only one input. Markets can tolerate high debt levels for long periods depending on inflation, growth, central bank credibility, and global capital flows.
6) What this means for investors (especially pre-retirees and retirees)
International outperformance can be a healthy reminder of why diversification exists.
- Pre-retireesoften benefit from avoiding concentration risk—especially if a single country, sector, or style has dominated their portfolio by default.
- Retireesmay appreciate how diversification can potentially reduce reliance on one market’s leadership while supporting a more stable withdrawal plan (though all investing involves risk).
Rather than trying to predict which region will win next year, a more durable approach is to maintain an allocation aligned with your goals, timeline, and risk tolerance—and rebalance when one area runs ahead.
Q&A
Q: Does international outperformance mean I should reduce U.S. stocks?
Not necessarily. The U.S. remains home to many high-quality global businesses. The key question isn’t “U.S. or international,” but whether your portfolio is appropriately diversified for your plan.
Q: Are deficits and debt a reliable way to pick winning markets?
They can provide context, but they’re not a reliable short-term timing tool. Market returns are driven by many factors, including earnings growth, valuations, rates, geopolitics, and currency movements.
Q: If the U.S. has a high debt-to-GDP ratio, why have U.S. stocks done so well historically?
Because stock returns are primarily tied to corporate earnings and investor expectations. The U.S. has benefited from strong innovation, productivity trends in certain eras, and the global role of the dollar—factors that can coexist with fiscal challenges.
Q: Isn’t Japan’s debt much higher than the U.S.? How can its market still perform?
Debt levels are part of a broader picture that includes inflation, demographics, central bank policy, and corporate profitability. Markets can behave differently than fiscal comparisons alone might suggest.
Q: What’s a practical next step if I’m concerned about being too U.S.-heavy?
Consider reviewing your allocation across U.S., developed international, and emerging markets—then evaluate whether your exposure still matches your goals and comfort with risk. Rebalancing can help manage concentration without making an all-or-nothing bet.
International stocks won’t lead every year, and the U.S. won’t lag every year. But when leadership rotates—as it always has—having a thoughtful global allocation can help keep a financial plan on track through changing market cycles.
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Sources
Fiscal metrics: deficits and debt-to-GDP (U.S. and other developed countries)
International Monetary Fund (IMF) — World Economic Outlook (WEO) Database (General government gross debt; overall fiscal balance).
https://www.imf.org/en/Publications/WEO/weo-databaseOrganisation for Economic Co-operation and Development (OECD) — General government debt and General government financial balances (cross-country government finance indicators).
https://data.oecd.org/gga/general-government-debt.htm
https://data.oecd.org/gga/general-government-deficit.htmWorld Bank — International Debt Statistics / General government debt indicators (country-level macro and debt context).
https://data.worldbank.orgCongressional Budget Office (CBO) — Budget and Economic Data (U.S. deficit, debt, and long-term budget outlook context).
https://www.cbo.gov/dataFederal Reserve Bank of St. Louis (FRED) — Federal Debt: Total Public Debt as Percent of Gross Domestic Product (U.S.-focused time series used frequently for debt-to-GDP discussion).
https://fred.stlouisfed.org/series/GFDEGDQ188S
U.S. vs. international equity market performance and benchmarks
MSCI — Index resources and factsheets (commonly used benchmarks for U.S. and developed international equities, such as MSCI USA and MSCI EAFE).
https://www.msci.com/our-solutions/indexesFTSE Russell — Index resources and factsheets (global and regional equity benchmarks often used for performance comparisons).
https://www.lseg.com/en/ftse-russell/indicesS&P Dow Jones Indices — Index resources (for background on the S&P 500 and other widely referenced benchmarks).
https://www.spglobal.com/spdji/en/
Currency and macro context (optional support for FX-related discussion)
Board of Governors of the Federal Reserve System — U.S. Dollar measures and related data (context for broad dollar strength/weakness).
https://www.federalreserve.govBank for International Settlements (BIS) — Effective exchange rate indicators and supporting methodology (broad, cross-country FX context).
https://www.bis.org/statistics/eer.htm
This commentary is provided for educational and informational purposes only and should not be construed as investment, legal, or tax advice. You should consult a qualified professional regarding your specific situation.
All investing involves risk, including possible loss of principal. Diversification does not ensure a profit or protect against loss in declining markets.
Investments in international and foreign securities may involve additional risks, including currency fluctuations, geopolitical risk, differing accounting standards, and the potential for less liquidity than U.S. securities.
Changes in currency exchange rates may increase or decrease the value of an investment.
Past performance is not indicative of future results. Any forward-looking statements are based on current expectations and are subject to change.
References to indexes are for illustrative purposes only. Indexes are unmanaged, do not reflect the deduction of fees and expenses, and are not available for direct investment.
Information and data are obtained from sources believed to be reliable; however, accuracy and completeness cannot be guaranteed.
This material is not intended as a recommendation to buy or sell any security or adopt any investment strategy. Any decisions should be made in the context of an investor’s goals, time horizon, and risk tolerance.