S&P 500 ETF Comparison 2026
The best S&P 500 ETFs compared — VOO, IVV, SPY, SPLG for US investors and CSPX, VUAA, SPXS for EU/UK. TER, replication, distribution and broker access.
What is an S&P 500 ETF?
The S&P 500 tracks the 500 largest publicly traded US companies — Apple, Microsoft, Nvidia, Berkshire Hathaway, JPMorgan and more. Over the last 30 years it has delivered an average annual return of about 10–11% in USD. No other equity index is more closely tied to the success of index investing.
There are two distinct universes: US-listed ETFs like VOO, IVV, SPY, SPLG (cheaper, but not buyable for EU retail investors due to MiFID II) and UCITS ETFs like CSPX, VUAA, SPXS that are domiciled in Ireland or Luxembourg and freely available across the EU/UK/Switzerland.
US-listed S&P 500 ETFs (US residents)
Vanguard's flagship S&P 500 ETF — over $1.4 trillion AUM, the largest equity ETF in the world. Full physical replication, distributing (quarterly), 0.03% TER. The default core holding for US retirement portfolios (401k / Roth IRA).
- Largest equity ETF globally
- Vanguard — at-cost ownership structure
- Tightest spreads in the market
- Excellent Roth IRA / 401k holding
- Full physical replication
- Not buyable for EU retail (MiFID II)
- No accumulating share class
- Distributing → tax drag in taxable accounts
BlackRock's S&P 500 ETF — virtually identical to VOO in structure: same TER (0.03%), full physical replication, quarterly distributions. Roughly $720 billion AUM. The choice between IVV and VOO is preference, not substance.
State Street's "Portfolio" line — the cheapest S&P 500 ETF at just 0.02% TER. Same index, same tracking quality as VOO/IVV. Smaller AUM (~$97bn) means slightly wider spreads, but for buy-and-hold investors the saving compounds meaningfully over decades.
The original ETF, launched in 1993 — the most heavily traded security in the world. Higher TER (0.0945%) than VOO/IVV/SPLG due to its UIT structure (no securities lending revenue offset). Best suited for short-term trading and options activity, not long-term holding.
UCITS S&P 500 ETFs (EU/UK/Switzerland residents)
The largest S&P 500 UCITS ETF in Europe — over €90bn AUM. Full physical replication, accumulating, very tight spreads. The default S&P 500 holding for EU/UK long-term investors.
Vanguard's UCITS-domiciled S&P 500 ETF — same 0.07% TER as CSPX, accumulating. Distributing version: VUSA (IE00B3XXRP09). For investors who prefer Vanguard's at-cost ownership model in their EU/UK portfolios.
Synthetically replicated (swap-based) — historically the lowest tracking difference among UCITS S&P 500 ETFs because the swap structure avoids US dividend withholding tax. TER 0.05%. For performance-maximizers comfortable with synthetic exposure.
- Best historical tracking
- Lowest UCITS S&P 500 TER (0.05%)
- Tax-optimized via swap structure
- Synthetic — counterparty risk (capped 10%)
- More complex structure
- Not available at every broker
All S&P 500 ETFs at a glance
FAQ
Which S&P 500 ETF is best in 2026?
For US investors: VOO or IVV for liquidity (0.03% TER) — or SPLG if you want the absolute lowest cost (0.02%). For EU/UK investors: CSPX or VUAA at 0.07% TER, both physically replicated and accumulating. Cost-obsessed UCITS investors who accept synthetic structures: SPXS (0.05%) has the best historical tracking.
Why can't I buy VOO or SPY in Germany or Austria?
Since MiFID II (2018) and PRIIPs, all retail-traded financial products in the EU must provide a Key Information Document (KID) in the local language. US-listed ETFs don't comply, so EU brokers block buy orders. The workaround: use the UCITS equivalent (VUAA instead of VOO, CSPX instead of IVV).
VOO vs IVV vs SPLG — does the choice matter?
Functionally, all three deliver virtually identical S&P 500 exposure. VOO and IVV have the highest liquidity and are interchangeable. SPLG is cheaper (0.02%) but has slightly wider spreads. Over a 30-year holding period the TER edge of SPLG compounds to a meaningful difference.
S&P 500 vs MSCI World — which is better?
The MSCI World includes ~71% US stocks plus 29% other developed markets — broader diversification. The S&P 500 is 100% US — historically higher returns thanks to American outperformance, but with concentration risk. For diversification: MSCI World or FTSE All-World; for maximum US exposure: S&P 500.
SPY vs SPLG — why the price difference?
SPY is a Unit Investment Trust (UIT) — it cannot lend out securities or reinvest dividends, which raises operational costs. SPLG is a modern open-end ETF with the same underlying index but a much more efficient structure. For long-term holding, SPLG wins; for active trading and options activity, SPY's massive liquidity is unbeatable.