Beginner Guide

US vs Global:
Where should European investors start?

If you’re starting from zero, you don’t need a perfect answer. You need a simple stock exposure you can hold for years — without switching every time headlines change. Here’s how to think about it as a European investor.

US vs global investing hero banner comparing a US-focused ETF and a global ETF with a central vs symbol, US flag and globe cues, checklist-style differences, and market charts in the background.

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TL;DR

US-only (e.g. S&P 500 UCITS)
  • Simple — one decision, one ETF.
  • Concentrated in a single country and currency (USD).
  • Strong long-run track record, no guarantee it continues.
  • Works well if you stay consistent and don’t performance-chase.
Global (e.g. MSCI World / FTSE All-World UCITS)
  • Still heavily US (typically 60–70%) — not a rejection of the US.
  • Spreads exposure across other developed (and EM) markets.
  • Reduces single-country concentration risk.
  • One ETF option available — no rebalancing needed.
Bottom line: Both can work. The bigger risk is switching between them based on recent performance. Pick one and hold it.

What “US vs global” actually means

When you buy a stock ETF, you’re choosing which companies to own. “US” and “global” are just labels for which markets are included.

Approach What you own UCITS example
US-only Companies listed in the United States iShares Core S&P 500 (CSPX)
Developed world US + Europe + Japan + other developed markets iShares MSCI World (IWDA)
All-world Developed + emerging markets in one fund Vanguard FTSE All-World (VWCE)
Global ex-US Everything except the United States Used to complement a US ETF
The key insight: global already contains a lot of the US

MSCI World is roughly 70% US stocks. FTSE All-World is around 60% US. Choosing “global” is not a bet against America — it’s a bet on a slightly more diversified set of companies that still has the US as its largest component.

The difference between US-only and global is how much weight you give to non-US developed markets (Europe, Japan, Canada, etc.) and, with FTSE All-World, emerging markets.


Four factors that change the calculation for EU investors

The US vs global debate looks different from a European perspective. These factors don’t change the answer — but they change what you should be thinking about.

1. UCITS only — not VOO or SPY

Most EU retail investors cannot buy US-domiciled ETFs (SPY, VOO, QQQ) due to PRIIPs/KID regulations. You use UCITS equivalents instead: same index, EU-compliant wrapper, usually domiciled in Ireland. The cost difference is small; the regulatory barrier is real.

2. FX drag is a real cost

When you buy a USD-denominated ETF from a EUR-denominated account, your broker converts currencies — at a cost. On a US-only ETF held long-term this is manageable. On repeated monthly contributions it compounds. IBKR minimises this; some neobrokers charge 0.15–0.5% per conversion.

3. Currency concentration

A US-only portfolio concentrates your returns in USD. If the dollar weakens against the euro, your EUR-denominated returns fall even if US stocks rise. A global ETF spreads exposure across USD, JPY, GBP, and other currencies — which may or may not help depending on the period.

4. Tax and domicile

Ireland-domiciled UCITS ETFs benefit from a 15% US dividend withholding rate (vs 30% for non-treaty domiciles). If you hold a distributing ETF, dividends flow through. If you hold accumulating, they’re reinvested with lower friction. Confirm your country’s rules — Germany, Italy, Spain, and the Netherlands all handle this differently.


Three approaches that work for most European investors

You don’t need niche country funds or complex tilts. Pick one of these and execute it consistently.

Option 1 S&P 500 UCITS ETF — simplest possible start

One ETF tracking the 500 largest US companies. Easy to understand, low cost, liquid. You accept US-only concentration in exchange for simplicity.

Trade-off: 100% USD exposure, single-country risk, no ex-US diversification.

Option 2 MSCI World or FTSE All-World UCITS ETF — one fund, done

One ETF covering developed markets (MSCI World) or developed + emerging (FTSE All-World). Still heavily US, but with automatic global diversification baked in. No rebalancing needed.

Trade-off: Slightly lower US concentration, a little more complexity to understand what you own.

Option 3 S&P 500 + global ex-US — manual tilt

Two ETFs: one US, one rest-of-world. Lets you set your own US weight (e.g. 70/30). Requires occasional rebalancing. More decisions, more control.

Trade-off: More maintenance, more decisions — and more chances for behaviour errors.

None of these is objectively correct. The first win is getting invested with a structure you can hold for 10+ years without abandoning it.

Which approach suits you

Your situation Lean toward
First time investing, want maximum simplicity S&P 500 UCITS or FTSE All-World UCITS
Want diversification and zero rebalancing effort FTSE All-World UCITS (single fund)
Want to set a specific US tilt and don’t mind two funds S&P 500 + Global ex-US (e.g. 70/30)
Income/job already tied to the US economy Global mix (reduce concentration)
Spending entirely in EUR, long horizon Either works — FX impact is long-run noise
Prone to switching when one region underperforms One all-world fund — remove the temptation
The mistake most people make

Starting with a global ETF, watching US stocks outperform for a year, switching to US-only — then watching Europe or EM recover and switching back. This is performance-chasing. It destroys returns.

The correct play: pick an allocation that reflects your convictions (if any), set it up, automate contributions, and leave it alone for years at a time.


Common mistakes

Performance-chasing

Switching between US-only and global every 12–18 months based on which did better recently. Both approaches are long-run strategies — treat them that way.

Thinking “global” means “not the US”

MSCI World is ~70% US. FTSE All-World is ~60% US. Adding a global fund alongside a US fund creates massive overlap. Check the combined exposure before assuming you’re diversified.

Ignoring FX costs at your broker

ETF choice matters less than what your broker charges to convert EUR to USD on every contribution. Use a broker with low FX fees (IBKR is best in class; many neobrokers charge 0.15–0.5%).

Staying in cash because the decision feels hard

An imperfect decision made now beats a perfect decision made in two years. Pick the simplest option (one ETF), set up a monthly contribution, refine later.


Ready to open an account?

Pick one ETF (S&P 500 or FTSE All-World), automate monthly contributions, and stop tinkering. That’s the whole strategy.



Frequently asked questions

What is the difference between a US ETF and a global ETF?

A US ETF holds only companies listed in the United States. A global ETF holds companies from many countries, weighted by market size — and typically still includes a large US allocation (often 60–70%). US-only concentrates risk in one country; global spreads it across regions while keeping significant US exposure.

If a global ETF already contains the US, why not just buy a global ETF?

That is a perfectly valid approach and the one many investors choose for simplicity. An all-world or MSCI World ETF gives you US exposure plus diversification into other developed markets without any extra decisions. The main trade-off is slightly lower US concentration — which many investors consider a feature, not a bug.

Does currency risk matter when choosing between US and global ETFs?

Yes, especially for EU investors. A US-only ETF concentrates your currency exposure in USD. A global fund spreads it across multiple currencies. Neither is inherently better — but if your income and expenses are in EUR, a global mix reduces the impact of a single currency swing on your portfolio. Over very long horizons, currency effects tend to wash out, but they can be significant in shorter windows.

Can EU investors buy US-domiciled ETFs like SPY or VOO?

Most EU retail investors cannot, due to PRIIPs/KID regulations that require a standardised KID document for retail products — which US ETFs don’t provide. The practical solution is UCITS-compliant equivalents: funds that track the same indices (S&P 500, MSCI World, FTSE All-World) but are domiciled in Ireland or Luxembourg and are fully accessible to EU investors.

Which is better long term — US-only or global?

No one can reliably predict which will outperform over the next 20 years. US stocks led for a long stretch; other regions have led before and will likely lead again at some point. Regional leadership rotates over decades. The more important decision is picking an allocation you can hold through full market cycles without switching based on recent performance — that consistency matters more than which specific index you chose.

QuantRoutine provides educational content only. Nothing on this page is an offer, solicitation, or recommendation to buy or sell any security or to open an account with any specific broker. Investments can lose value, and past performance does not guarantee future results. You are responsible for your own investment, tax, and legal decisions. Always review each broker’s current terms, fees, and eligibility on their official website before opening or funding an account.

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