The Moment
You are building or reviewing your portfolio and wondering: how much should be in international stocks? US stocks have dominated for the last 15 years, and it is tempting to go 100% domestic.
But performance leadership rotates. From 2000-2010, international stocks outperformed US stocks by roughly 3% per year. From 2010-2024, US stocks outperformed by roughly 5% per year. The next decade could go either way — and that uncertainty is exactly why you diversify.
The Framework
The market-weight approach: ~40% international Global market capitalization is roughly 60% US and 40% non-US. Holding the global market weight means 40% international. This is the most theoretically "neutral" position — you are not betting on any single country.
The practical approach: 20-30% international Most US-based financial advisors recommend 20-30% international, accounting for the "home bias" preference (your expenses, taxes, and income are in US dollars) and the higher quality and transparency of US markets.
Vanguard's recommendation: 40% international Vanguard's target-date funds allocate 40% of stocks internationally. Their research shows this is the allocation that maximizes diversification benefits.
The wrong answer: 0% international Zero international exposure is a concentrated bet that the US will outperform the rest of the world for the entire duration of your investment horizon. This bet has been wrong for entire decades. The diversification benefit of international stocks is real even during periods of US outperformance — it reduces portfolio volatility.
What to Buy
One fund does it all: - VXUS (Vanguard Total International Stock ETF): 0.08% expense ratio - IXUS (iShares Core MSCI Total International Stock ETF): 0.07% - FZILX (Fidelity ZERO International Index Fund): 0.00%
These funds hold thousands of stocks across developed markets (Europe, Japan, Australia) and emerging markets (China, India, Brazil). One fund gives you global diversification.
Run Your Numbers
See how different international allocations affect long-term growth projections.
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What to explore next
- →How do I rebalance between US and international stocks?
- →Should I hedge currency risk in international holdings?
- →What is the right bond allocation for my age?
Frequently Asked Questions
Should I include emerging markets?
Yes, but as a small portion (5-10% of stocks). Emerging markets are more volatile but offer higher growth potential and diversification benefits. A total international fund like VXUS already includes emerging markets at market weight (~25% of the fund), so you may already have exposure.
Do currency fluctuations hurt international returns?
Currency adds volatility but not a systematic drag over long periods. A weak dollar actually boosts international returns for US investors (foreign stocks are worth more in dollar terms). Currency risk is a diversification feature, not a bug.