EUR/USD: The Hidden Lever in Your US Stock Returns
You can’t afford to ignore currency swings anymore. In May 2026, the euro broke below $1.03, down nearly 10% from its 2025 average. That isn’t a blip; it’s a structural move, driven by ECB dovishness, widening US-EU rate differentials, and Europe’s stubborn growth problem. For anyone holding US assets unhedged, this has been a gift.If you’d bought €10,000 worth of the iShares Core S&P 500 UCITS ETF (CSPX) in January 2025, your USD return would’ve been +18%. But in euro terms—thanks to the falling EUR/USD exchange rate—your return jumps to over +28%.That’s a €1,000+ "bonus" just for sitting on the right side of FX. The math is clear. For every percentage point the euro weakens against the dollar, your unhedged US stock position gets a direct boost. In periods like 2022–2023 and again since late 2025, the FX tailwind has outpaced the dividend yields of most European blue chips. Read the detailed breakdown of how this move has supercharged European ETF returns in 2026.
Hedged vs. Unhedged: Stop Flying Blind
Most Europeans default to unhedged ETFs like CSPX (S&P 500, accumulating, USD) or VWCE (Vanguard FTSE All-World, USD). After all, why hedge away a tailwind? But ask yourself: What happens when the wind shifts? Here’s the problem: currency moves cut both ways. In 2017, the euro surged from $1.04 to $1.20 in twelve months. European holders of US stocks saw their double-digit dollar gains evaporate to low single digits in EUR. Painful? Yes. Predictable? Absolutely. Let’s look at fees: BlackRock’s S&P 500 EUR-Hedged ETF charges 0.20% vs. 0.07% for CSPX. That’s not prohibitive, but if the FX effect swings negative, the "cost" of being unhedged could dwarf any fee difference. In fact, between 2012 and 2014, a EUR-hedged S&P 500 ETF underperformed its unhedged sibling by 22%. In the five years after, the unhedged version lagged by 8% as the euro rebounded.The Bottom Line
Staking your wealth on currency swings without a plan isn’t risk management—it’s gambling. For 2026, your choice of hedged or unhedged ETF will define your real return, not just the S&P 500’s headline number.
Concrete Portfolio Moves: What Should Europeans Do?
Let’s cut the theory—here’s what matters for your next allocation:- Know your exposure: Most "global" ETFs like VWCE are over 60% US stocks, so you’re not nearly as diversified away from USD risk as you think.
- Don’t chase last year’s currency win: The euro is undervalued. According to OECD PPP models, fair value is closer to $1.14. If Europe’s inflation or energy crisis abates, we could see a snapback—and a 10% FX headwind for US stock holders.
- Split your bets: For core holdings, consider a 50:50 mix of hedged and unhedged ETFs. This cushions the blows either way, especially for retirement-focused portfolios. If you’re using CSPX, pair it with a hedged equivalent for your "core" as suggested in our core-satellite ETF strategy guide for Europeans.
- Use rebalancing windows: Review your FX exposure annually. If EUR/USD falls below $1.00, it’s time to lock in some of that FX gain, shift part of your US allocation to EUR-hedged, or overweight Europe until the currency recovers. See our practical rebalancing guide for step-by-step EUR examples.
Every 5% move in EUR/USD directly impacts your euro-denominated returns from US stocks by the same 5%—sometimes more than the S&P 500’s own performance.And if you’re sitting in accumulating ETFs (like CSPX or VWCE), don’t fool yourself: reinvested dividends aren’t immune to FX risk. If you’re planning for FIRE or future withdrawals, that euro-dollar trade could make or break your projections.
The Case Against Chasing Unhedged USD Exposure
To be fair, there’s a strong argument for not trying to time currencies at all. Over longer horizons, FX returns tend to mean-revert. According to MSCI, the 20-year volatility added by unhedged USD exposure to European portfolios averages 6-8%, but the long-term return difference is negligible—unless you’re unlucky with your entry and exit points. Then there are the fees. Hedged ETFs cost more. They sometimes underperform in flat FX years, and the hedging process itself isn’t perfect (tracking errors, roll costs). If you’re young, earning in euros, and investing for 20+ years, riding out the currency noise may be the simplest, lowest-cost path.But ask yourself: Are you really investing for 20 years without ever touching your portfolio—or will you need those euros for a home, tuition, or retirement sooner?If you’re a passive, long-term investor, especially using accumulating ETFs for FIRE (see our analysis here), ignoring FX may work. But for anyone drawing down in the next five years, hedging is cheap insurance.
Prediction: 2026 Is the Year Currency Risk Bites Back
The past two years handed euro-based investors a gift-wrapped FX boost. That’s over. The EUR/USD currency impact on US stocks will define who wins and who loses among European investors in 2026. Hedge part of your US allocation now—don’t wait for the headlines to tell you the euro is "back."If you stay 100% unhedged in 2026, you’re betting that a battered euro will stay down forever. That’s not strategy—it’s hubris.For most Europeans, the smart money is on diversification: split your allocations, review currency splits annually, and use both CSPX (unhedged) and its hedged sibling in your core. Don’t let a random currency swing knock 10% off your net worth.
Disclaimer: This article reflects the author's opinion and is for educational purposes only. It does not constitute financial advice. Always do your own research before making investment decisions.