US stocks have dominated recently, but history shows that changes. International diversification protects you when it does.
US vs International Performance: The Full Picture
Decade-by-Decade Returns
| Decade | US Stocks (S&P 500) | International Developed (MSCI EAFE) | Emerging Markets (MSCI EM) | Winner |
|---|---|---|---|---|
| 1970s | 5.9%/year | 10.1%/year | N/A | International |
| 1980s | 17.5%/year | 22.8%/year | N/A | International |
| 1990s | 18.2%/year | 7.3%/year | 5.0%/year | US |
| 2000s | -0.9%/year | 1.6%/year | 9.8%/year | Emerging markets |
| 2010s | 13.6%/year | 5.3%/year | 3.7%/year | US |
| 2020-2024 | 14.5%/year | 5.8%/year | 2.5%/year | US |
Key takeaway: US and international stocks take turns outperforming. The US has led for 15 years — historically, that’s when leadership typically shifts.
Why International Diversification Matters
What If You Only Owned US Stocks in the 2000s?
| Portfolio | 2000-2009 Total Return | $100,000 Became |
|---|---|---|
| 100% US (S&P 500) | -9.1% | $90,900 |
| 100% International Developed | +17.2% | $117,200 |
| 100% Emerging Markets | +154% | $254,000 |
| 60% US / 40% International | +4.7% | $104,700 |
The “lost decade” for US stocks was a strong decade for international — diversification turned a loss into a gain.
Correlation Between Markets (Lower = Better Diversification)
| Market Pair | Correlation (20-Year) | Diversification Benefit |
|---|---|---|
| US vs Developed International | 0.85 | Moderate |
| US vs Emerging Markets | 0.65 | Good |
| US vs Frontier Markets | 0.45 | Very Good |
| Developed vs Emerging | 0.70 | Moderate-Good |
Top International ETFs
Broad International
| ETF | Coverage | Expense Ratio | Holdings | Dividend Yield |
|---|---|---|---|---|
| VXUS | Total International | 0.07% | 8,500+ | 3.0% |
| IXUS | Total International | 0.07% | 4,400+ | 2.8% |
| VEU | All ex-US | 0.07% | 3,800+ | 3.0% |
| ACWX | All Country ex-US | 0.07% | 2,300+ | 2.8% |
Developed Markets Only
| ETF | Coverage | Expense Ratio | Holdings | Dividend Yield |
|---|---|---|---|---|
| VEA | Developed Markets | 0.05% | 4,000+ | 3.2% |
| IEFA | Developed ex-US | 0.07% | 2,800+ | 2.9% |
| EFA | Developed (EAFE) | 0.32% | 800+ | 3.0% |
| SPDW | Developed ex-US | 0.04% | 2,100+ | 2.9% |
Emerging Markets
| ETF | Coverage | Expense Ratio | Holdings | Dividend Yield |
|---|---|---|---|---|
| VWO | Emerging Markets | 0.08% | 5,800+ | 3.2% |
| IEMG | Emerging Markets | 0.09% | 2,800+ | 2.6% |
| EEM | Emerging Markets | 0.68% | 1,200+ | 2.3% |
| SCHE | Emerging Markets | 0.11% | 1,900+ | 2.7% |
Regional Breakdown
Country Weights in VXUS (Total International)
| Region / Country | Weight | GDP % of World | Key Characteristics |
|---|---|---|---|
| Developed Markets | ~78% | ||
| Japan | 14.5% | 4.2% | World’s 3rd largest economy |
| United Kingdom | 8.5% | 3.1% | Global financial center |
| Canada | 6.5% | 2.0% | Resource-rich, stable |
| France | 5.8% | 2.8% | Eurozone’s 2nd largest |
| Switzerland | 5.2% | 0.9% | Safe haven, pharma/banking |
| Germany | 4.8% | 4.0% | Europe’s manufacturing giant |
| Australia | 4.2% | 1.7% | Resources, banking |
| Emerging Markets | ~22% | ||
| China | 7.0% | 18.5% | World’s 2nd largest economy |
| India | 4.5% | 7.3% | Fastest-growing large economy |
| Taiwan | 3.8% | 0.8% | Semiconductor dominance |
| South Korea | 2.8% | 1.8% | Tech and manufacturing |
| Brazil | 1.2% | 2.4% | Natural resources, agriculture |
How Much International?
Expert Recommendations
| Source | Recommended International Allocation | Reasoning |
|---|---|---|
| Vanguard | 40% of stock allocation | Market cap-weighted global approach |
| Fidelity | 25-30% | Diversification with home-country bias |
| Schwab | 20-25% | Beyond that, diminishing diversification benefit |
| Jack Bogle (Vanguard founder) | 20% or less | US multinationals already provide global exposure |
| Warren Buffett | 0% (for most people) | “Never bet against America” |
| Target-date funds (average) | 30-40% | Most major fund families |
| Research consensus | 20-40% | Sweet spot for risk-adjusted returns |
Optimal Allocation by Risk Tolerance
| Risk Profile | US Stocks | International Stocks | Reasoning |
|---|---|---|---|
| Aggressive growth | 55-60% | 35-40% | Maximum diversification benefit |
| Moderate growth | 60-65% | 25-35% | Balanced approach |
| Conservative growth | 70-75% | 15-25% | Home-country tilt |
| US-focused | 80%+ | 10-20% | Minimal international |
Currency Risk and Hedging
How Currency Affects Returns
| Scenario | Local Return | Currency Effect | US Dollar Return |
|---|---|---|---|
| European stock rises 10%, euro falls 5% | +10% | -5% | +5% |
| Japanese stock rises 5%, yen rises 8% | +5% | +8% | +13% |
| UK stock flat, pound falls 10% | 0% | -10% | -10% |
Should You Hedge Currency?
| Factor | Hedge | Don’t Hedge |
|---|---|---|
| Time horizon < 3 years | ✅ Consider | |
| Time horizon 10+ years | ✅ Currency evens out | |
| Most individual investors | ✅ Don’t hedge | |
| Bond allocation | ✅ Hedge | |
| Hedged ETF cost | +0.05-0.15% ER | |
| Historical research | No long-term return benefit from hedging equities |
Tax Considerations for International Investing
Foreign Tax Credit
| Item | Details |
|---|---|
| What it is | Credit for taxes already paid to foreign governments on dividends |
| Who qualifies | US taxpayers holding international investments in taxable accounts |
| How it works | Report on Form 1116 or take as deduction |
| Typical value | $100-$500/year for moderate international holdings |
| Best account | Hold international funds in taxable accounts to claim the credit |
| In tax-advantaged | Foreign taxes are lost (can’t claim credit in IRA/401k) |
Asset Location for International Funds
| Account Type | Hold International Here? | Reason |
|---|---|---|
| Taxable brokerage | ✅ Yes (preferred) | Claim foreign tax credit |
| Roth IRA | ✅ OK | No foreign tax credit, but tax-free growth |
| Traditional IRA | ⚠️ Less ideal | Foreign taxes lost, no credit available |
| 401(k) | ⚠️ Less ideal | Foreign taxes lost, limited fund choices |
Risks Specific to International Investing
| Risk | Description | How to Mitigate |
|---|---|---|
| Currency risk | Exchange rate fluctuations | Long-term holding, diversification |
| Political risk | Government instability, policy changes | Diversify across regions |
| Regulatory risk | Different accounting, disclosure standards | Use broad index funds |
| Liquidity risk | Some markets have lower trading volumes | Stick to major ETFs |
| Emerging market volatility | Can drop 30-50% in a year | Limit EM to 5-10% of total portfolio |
| Country concentration risk | China is 35%+ of EM indexes | Consider ex-China ETFs |
| Tax complexity | Foreign tax credits, treaty rules | Use broad funds, consult tax software |
Model International Portfolios
Simple (2 Funds)
| Fund | Allocation | What It Covers |
|---|---|---|
| VTI (US Total Market) | 70% | All US stocks |
| VXUS (Total International) | 30% | All non-US stocks |
Moderate (3 Funds)
| Fund | Allocation | What It Covers |
|---|---|---|
| VTI (US Total Market) | 65% | All US stocks |
| VEA (Developed International) | 25% | Europe, Japan, Australia, Canada |
| VWO (Emerging Markets) | 10% | China, India, Taiwan, Brazil |
Detailed (5 Funds)
| Fund | Allocation | What It Covers |
|---|---|---|
| VTI (US Total Market) | 60% | All US stocks |
| VEA (Developed International) | 20% | Developed markets ex-US |
| VWO (Emerging Markets) | 8% | Emerging markets |
| AVDV (Int’l Small Cap Value) | 7% | Small value factor internationally |
| AVES (EM Small Cap Value) | 5% | Emerging market small value |
Related: How to Start Investing | Index Funds vs ETFs | Asset Allocation by Age | Portfolio Rebalancing | Tax-Efficient Investing | S&P 500 Historical Returns