Quick Dive Into the Debate
I’ve been asked this question a lot lately by friends who’ve watched the S&P 500 roar for years while their international funds barely budged. And honestly, I’ve been wrestling with the same thing. After digging into earnings reports, talking to fund managers, and even stress‑testing my own portfolio, I think 2026 might be the year the pendulum swings. Not because the US suddenly becomes bad, but because the math is getting harder to ignore.
The Valuation Gap: US vs the World
Right now, US stocks trade at a P/E ratio of about 23–24x forward earnings. International developed markets (think Europe, Japan, Australia) are closer to 14–15x. Emerging markets are even cheaper at ~12x. That’s a gap we haven’t seen this wide since the early 2000s – right before international stocks went on a decade‑long outperformance run.
I remember a presentation from a value fund manager last year. He showed a scatter plot of country‑level valuations versus subsequent 5‑year returns. The dot for the US was way out in the expensive zone, while countries like South Korea, France, and Brazil were clustered in the cheap. His point: buying expensive doesn’t always end well, even if the companies are great.
Earnings Growth Matters More Than Starting Valuation
But valuation alone isn’t the whole story. The US tech sector has produced massive earnings growth – think Magnificent Seven (Apple, Microsoft, etc.). In 2025, that growth is slowing. Margins are getting squeezed by regulation, competition, and rising costs. Meanwhile, European cyclicals and Asian exporters are starting to see order books fill up. If the earnings growth gap narrows, international stocks could catch up.
Why US Dominance Might Not Last
Everyone loves the US market for its innovation, dollar reserve status, and shareholder‑friendly policies. But there are cracks forming that many ignore.
- Fiscal deficit: The US is running a 6%+ deficit in a strong economy. That’s unsustainable. Higher borrowing costs could crowd out private investment and put pressure on stock multiples.
- Political uncertainty: Trade tariffs, regulation on AI, and potential tax changes create a fog for US‑based multinationals. Meanwhile, Europe and Asia are finally getting their act together on regulatory clarity.
- Tech concentration risk: The top 10 stocks in the S&P 500 now account for over 30% of market cap. That’s a risk – if one or two of those falter, the whole index suffers. International indices are more balanced across sectors and countries.
I visited a factory in Germany last month (part of a supplier chain research). The manager told me their order backlog is at an all‑time high, and they’re investing in automation because labor is tight. That’s the kind of real‑world signal that doesn’t show up in P/E ratios but points to earnings momentum.
Historical Cycles: When International Led
Let’s look at two clear periods when international stocks outperformed US stocks for a sustained stretch: 2002–2007 and 1985–1989. In both cases, the US had enjoyed a long bull run, valuations were stretched, and eventually the baton passed.
| Period | US Annual Return (S&P 500) | International Annual Return (MSCI World ex‑USA) | Key Driver |
|---|---|---|---|
| 2002–2007 | ~11% | ~18% | Emerging market boom, weak dollar |
| 1985–1989 | ~16% | ~25% | Plaza Accord, Japan bubble |
| 2010–2015 | ~15% | ~5% | US tech dominance, strong dollar |
If 2026 is a turning point, international may not need to deliver 20% annually. Even a 3–5% advantage over US stocks would be a huge shift from the last decade of underperformance. I’ve started putting small bets on value‑oriented international ETFs – not a full rotation, but a tilt.
2026 Macro Headwinds That Favor International
Three big forces could push money overseas.
1. Dollar Weakness
When the dollar falls, international stocks (denominated in local currencies) get a boost for US investors. The dollar has been strong since 2022, but the Federal Reserve may start cutting rates while other central banks hold firm. That could weaken the dollar. I saw it happen in 2004–2007 – the dollar dropped 20% and international stocks soared.
2. Valuation Mean Reversion
There’s a strong statistical tendency for valuations to revert toward their long‑term averages. The US is well above average; international is below. Reversion doesn’t happen overnight, but over 2‑3 years the odds tilt heavily toward the cheap side.
3. Earnings Surprise Potential
Analyst expectations for international companies are much lower than for US firms. That creates a lower bar to clear. When companies beat low expectations, their stocks jump. I’ve noticed this in European banks and Japanese industrials – they consistently report small surprises while US tech often disappoints.
How I’m Tweaking My Portfolio Right Now
I’m not abandoning US stocks. But I am shifting from a 80% US / 20% international split to roughly 65% US / 35% international. Here’s the specific allocation:
- US Large Cap (VOO or IVV): 40% – still core, but trimmed
- US Small Cap (AVUV): 10% – domestic value play
- Developed ex‑US (VEA or IDEV): 20% – mostly Europe, Japan, Australia
- Emerging Markets (VWO or IEMG): 15% – overweight India and Brazil
- Cash & Bonds: 15% – flexibility
I made this change gradually over six months to avoid timing the market. I also added a small position in a currency‑hedged international ETF (HEDJ) to protect against a potential dollar rebound – though I think the risk is to the downside for the dollar.
One mistake I see people make: they buy international funds and then panic when they underperform for a quarter. They sell near the bottom. If you believe in the thesis, you need a 3‑year horizon. International can be volatile and slow to turn.
FAQ: Tough Questions on International vs US
*This article reflects my personal research and opinion. I have fact‑checked the valuation figures against Bloomberg data as of Q4 2025. Past performance is not indicative of future results. Always consult a financial advisor before making investment decisions.
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