IWDA vs CSPX: World Index or S&P 500 for European Investors?
IWDA and CSPX are the two most debated UCITS ETFs among European investors. IWDA tracks the MSCI World Index — 1,400+ stocks across 23 developed markets, with about 70% US weight. CSPX tracks the S&P 500 — 500 US large-cap stocks only. Both are Ireland-domiciled, accumulating, and from iShares. The core question: is the 30% international diversification in IWDA worth the extra cost and slightly lower historical returns?
Key Differences
- IWDA: 23 developed markets (~70% US); CSPX: 100% US — IWDA adds Europe, Japan, UK, Canada, Australia
- CSPX has lower TER: 0.07% vs IWDA's 0.20% — the cost gap compounds over decades
- US stocks have dominated for 15+ years, making CSPX the recent performance winner
- IWDA provides currency diversification and protection if US exceptionalism fades
- Both are accumulating and Ireland-domiciled — same tax treatment for EU investors
Live Comparison
Interactive comparison with real data. Toggle dividends and tax settings to see the full picture.
Bottom Line
For US conviction: CSPX wins on cost and recent performance. For diversification: IWDA protects against the risk of a US-centric portfolio. A popular European compromise: 80% CSPX + 20% dedicated international or emerging markets exposure. If you want maximum simplicity with global coverage: VWCE may be even better than either.