CSUS.AS vs. CSPX.AS

Last updated Jun 5, 2026

CSUS.AS (iShares MSCI USA UCITS ETF USD (Acc)) and CSPX.AS (iShares Core S&P 500 UCITS ETF) are both exchange-traded funds - CSUS.AS is a Large Cap Blend Equities fund tracking the Russell 1000 TR USD, while CSPX.AS is a S&P 500 fund tracking the S&P 500 Index. Both are passively managed. Over the past 10 years, CSUS.AS returned 14.77%/yr vs 14.96%/yr for CSPX.AS. With a 0.97 correlation, they move nearly in lockstep. CSUS.AS charges 0.33%/yr vs 0.07%/yr for CSPX.AS.

Performance

CSUS.AS vs. CSPX.AS - Performance Comparison

The chart below illustrates the hypothetical performance of a €10,000 investment in iShares MSCI USA UCITS ETF USD (Acc) (CSUS.AS) and iShares Core S&P 500 UCITS ETF (CSPX.AS). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

The year-to-date returns for both investments are quite close, with CSUS.AS having a 11.31% return and CSPX.AS slightly higher at 11.52%. Both investments have delivered pretty close results over the past 10 years, with CSUS.AS having a 14.77% annualized return and CSPX.AS not far ahead at 14.96%.

CSUS.AS

• 1D: -0.02%
• 1M: 5.45%
• YTD: 11.31%
• 6M: 11.33%
• 1Y: 25.43%
• 3Y*: 19.05%
• 5Y*: 14.34%
• 10Y*: 14.77%

CSPX.AS

• 1D: -0.10%
• 1M: 5.25%
• YTD: 11.52%
• 6M: 11.45%
• 1Y: 25.69%
• 3Y*: 18.87%
• 5Y*: 14.77%
• 10Y*: 14.96%

*Multi-year figures are annualized to reflect compound growth (CAGR)

CSUS.AS vs. CSPX.AS - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
CSUS.AS iShares MSCI USA UCITS ETF USD (Acc)	11.31%	4.04%	33.96%	22.33%	-15.27%	37.95%	10.18%	32.81%	-0.73%	6.52%
CSPX.AS iShares Core S&P 500 UCITS ETF	11.52%	4.00%	33.87%	22.28%	-14.24%	40.26%	7.72%	32.99%	-0.36%	7.13%

Correlation

The correlation between CSUS.AS and CSPX.AS is 0.98 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.98
Correlation (3Y) Calculated over the trailing 3-year period	0.98
Correlation (5Y) Calculated over the trailing 5-year period	0.94
Correlation (10Y) Calculated over the trailing 10-year period	0.97
Correlation (All Time) Calculated using the full available price history since May 6, 2014	0.97

The correlation between CSUS.AS and CSPX.AS has been stable across timeframes, ranging from 0.94 to 0.98 - a consistent structural relationship.

Return for Risk

CSUS.AS vs. CSPX.AS — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

CSUS.AS

CSUS.AS Risk / Return Rank: 69
CSUS.AS Sharpe Ratio Rank: 69
CSUS.AS Sortino Ratio Rank: 67
CSUS.AS Omega Ratio Rank: 72
CSUS.AS Calmar Ratio Rank: 70
CSUS.AS Martin Ratio Rank: 66

CSPX.AS

CSPX.AS Risk / Return Rank: 70
CSPX.AS Sharpe Ratio Rank: 70
CSPX.AS Sortino Ratio Rank: 68
CSPX.AS Omega Ratio Rank: 72
CSPX.AS Calmar Ratio Rank: 72
CSPX.AS Martin Ratio Rank: 70

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

CSUS.AS vs. CSPX.AS - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares MSCI USA UCITS ETF USD (Acc) (CSUS.AS) and iShares Core S&P 500 UCITS ETF (CSPX.AS). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.

	CSUS.AS	CSPX.AS	Difference
Sharpe ratio: Return per unit of total volatility	2.24	2.25	-0.02
Sortino ratio: Return per unit of downside risk	3.03	3.06	-0.03
Omega ratio: Gain probability vs. loss probability	1.42	1.42	0.00
Calmar ratio: Return relative to maximum drawdown	3.42	3.57	-0.15
Martin ratio: Return relative to average drawdown	11.97	12.76	-0.79
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

CSUS.AS vs. CSPX.AS - Sharpe Ratio Comparison

The current CSUS.AS Sharpe Ratio is 2.24, which is comparable to the CSPX.AS Sharpe Ratio of 2.25. The chart below compares the historical Sharpe Ratios of CSUS.AS and CSPX.AS, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	CSUS.AS	CSPX.AS	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.24	2.25	-0.02
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.91	0.96	-0.05
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.90	0.92	-0.02
Sharpe Ratio (All Time) Calculated using the full available price history	0.90	0.93	-0.02

Drawdowns

CSUS.AS vs. CSPX.AS - Drawdown Comparison

The maximum CSUS.AS drawdown since its inception was -34.08%, roughly equal to the maximum CSPX.AS drawdown of -33.65%. Use the drawdown chart below to compare losses from any high point for CSUS.AS and CSPX.AS.

Drawdown Indicators

	CSUS.AS	CSPX.AS	Difference
Max Drawdown Largest peak-to-trough decline	-34.08%	-33.65%	-0.43%
Max Drawdown (1Y) Largest decline over 1 year	-7.34%	-7.11%	-0.23%
Max Drawdown (3Y) Largest decline over 3 years	-23.49%	-23.37%	-0.12%
Max Drawdown (5Y) Largest decline over 5 years	-23.49%	-23.37%	-0.12%
Max Drawdown (10Y) Largest decline over 10 years	-34.08%	-33.65%	-0.43%
Current Drawdown Current decline from peak	-0.33%	-0.40%	+0.07%
Average Drawdown Average peak-to-trough decline	-4.41%	-4.28%	-0.13%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.11%	2.00%	+0.11%

Volatility

CSUS.AS vs. CSPX.AS - Volatility Comparison

iShares MSCI USA UCITS ETF USD (Acc) (CSUS.AS) has a higher volatility of 2.74% compared to iShares Core S&P 500 UCITS ETF (CSPX.AS) at 2.59%. This indicates that CSUS.AS's price experiences larger fluctuations and is considered to be riskier than CSPX.AS based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	CSUS.AS	CSPX.AS	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.74%	2.59%	+0.15%
Volatility (6M) Calculated over the trailing 6-month period	7.58%	7.37%	+0.21%
Volatility (1Y) Calculated over the trailing 1-year period	11.23%	11.26%	-0.03%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	15.48%	15.13%	+0.35%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	16.23%	16.05%	+0.18%

CSUS.AS vs. CSPX.AS - Expense Ratio Comparison

CSUS.AS has a 0.33% expense ratio, which is higher than CSPX.AS's 0.07% expense ratio.

Dividends

CSUS.AS vs. CSPX.AS - Dividend Comparison

Neither CSUS.AS nor CSPX.AS has paid dividends to shareholders.

Tickers have no history of dividend payments

Frequently Asked Questions

Can I hold both CSUS.AS and CSPX.AS in my portfolio?

With a correlation of 0.98, CSUS.AS and CSPX.AS move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which ETF is better, CSUS.AS or CSPX.AS?

On fees, CSPX.AS is cheaper at 0.07% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, CSUS.AS or CSPX.AS?

CSPX.AS is cheaper with a 0.07% expense ratio, compared with 0.33% for CSUS.AS.

What is the main difference between CSUS.AS and CSPX.AS?

CSUS.AS is categorized as Large Cap Blend Equities, while CSPX.AS is S&P 500. CSUS.AS tracks Russell 1000 TR USD, while CSPX.AS tracks S&P 500 Index. Their fees differ too: 0.33% for CSUS.AS and 0.07% for CSPX.AS.