CSPX vs Amundi Core S&P 500 Swap

The comparison in short

CSPX (iShares Core S&P 500 UCITS ETF, IE00B5BMR087) and Amundi Core S&P 500 Swap (Amundi Core S&P 500 Swap UCITS ETF Acc, LU1135865084) both track the S&P 500 index. Amundi Core S&P 500 Swap has the lower total expense ratio (TER): 0.05% a year against 0.07% for CSPX, 0.02 percentage points less, or about 2 a year on 10,000 invested. CSPX is the larger fund, with USD 154.5bn in assets against USD 19.4bn for Amundi Core S&P 500 Swap, about 8 times the size. CSPX reports 504 holdings and Amundi Core S&P 500 Swap 528. Amundi Core S&P 500 Swap replicates its index through a swap and publishes the collateral basket behind it, so the holdings overlap is not measured. In 2025, CSPX returned +17.6% and Amundi Core S&P 500 Swap +17.7%, a gap of 0.1 percentage points. Over 10 years, CSPX returned +15.1% a year and Amundi Core S&P 500 Swap +15.4% a year. CSPX and Amundi Core S&P 500 Swap both reinvest their income (accumulating share classes). CSPX holds the index securities directly (physical replication), while Amundi Core S&P 500 Swap replicates its index through a swap (synthetic). CSPX is domiciled in Ireland and Amundi Core S&P 500 Swap in Luxembourg. CSPX and Amundi Core S&P 500 Swap both carry a risk indicator (SRRI) of 4 on the 1–7 scale. This is a factual comparison from the fund houses' documents, not investment advice.