GSPX.L vs. IUSU.L

Last updated Jun 5, 2026

GSPX.L (iShares Core S&P 500 UCITS ETF) and IUSU.L (iShares V PLC - iShares S&P 500 Utilities Sector UCITS ETF) are both exchange-traded funds - GSPX.L is a S&P 500 fund tracking the S&P 500 Index, while IUSU.L is a Utilities Equities fund tracking the S&P 500 Capped 35/20 Utilities. Both are passively managed. Over the past 5 years, GSPX.L returned 12.56%/yr vs 9.60%/yr for IUSU.L. At a 0.21 correlation, their price movements are largely independent. GSPX.L charges 0.10%/yr vs 0.15%/yr for IUSU.L.

Performance

GSPX.L vs. IUSU.L - Performance Comparison

The chart below illustrates the hypothetical performance of a £10,000 investment in iShares Core S&P 500 UCITS ETF (GSPX.L) and iShares V PLC - iShares S&P 500 Utilities Sector UCITS ETF (IUSU.L). The values are adjusted to include any dividend payments, if applicable.

Different Trading Currencies

GSPX.L is traded in GBP, while IUSU.L is traded in GBp. To make them comparable, the IUSU.L values have been converted to GBP using the latest available exchange rates.

Returns By Period

In the year-to-date period, GSPX.L achieves a 10.04% return, which is significantly higher than IUSU.L's 1.75% return.

GSPX.L

• 1D: -0.03%
• 1M: 4.53%
• YTD: 10.04%
• 6M: 10.80%
• 1Y: 27.24%
• 3Y*: 21.42%
• 5Y*: 12.56%
• 10Y*: —

IUSU.L

• 1D: -2.12%
• 1M: -5.89%
• YTD: 1.75%
• 6M: -0.56%
• 1Y: 9.56%
• 3Y*: 9.72%
• 5Y*: 9.60%
• 10Y*: —

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

GSPX.L vs. IUSU.L - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018
GSPX.L iShares Core S&P 500 UCITS ETF	10.04%	17.15%	24.63%	24.88%	-20.60%	28.94%	15.10%	27.75%	-8.17%
IUSU.L iShares V PLC - iShares S&P 500 Utilities Sector UCITS ETF	1.75%	7.65%	25.08%	-13.15%	14.26%	19.91%	-4.85%	21.27%	5.43%

Correlation

The correlation between GSPX.L and IUSU.L is 0.02, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.02
Correlation (3Y) Calculated over the trailing 3-year period	0.10
Correlation (5Y) Calculated over the trailing 5-year period	0.17
Correlation (All Time) Calculated using the full available price history since Jul 4, 2018	0.21

The correlation between GSPX.L and IUSU.L shifts across timeframes, from 0.02 (1 year) to 0.21 (all time), reflecting how their relationship changes across market environments.

GSPX.L vs. IUSU.L - Sectors Allocation Comparison

Sectors	GSPX.L	IUSU.L
Technology	38.6%	-
Financial Services	11.3%	-
Communication Services	10.6%	-
Consumer Cyclical	9.6%	-
Healthcare	8.2%	-
Industrials	7.6%	-
Consumer Defensive	4.6%	-
Energy	3.3%	-
Utilities	2.6%	100.0%
Basic Materials	1.7%	-
Real Estate	1.7%	-

Return for Risk

GSPX.L vs. IUSU.L — Risk / Return Rank

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

GSPX.L

GSPX.L Risk / Return Rank: 73
GSPX.L Sharpe Ratio Rank: 73
GSPX.L Sortino Ratio Rank: 77
GSPX.L Omega Ratio Rank: 74
GSPX.L Calmar Ratio Rank: 65
GSPX.L Martin Ratio Rank: 75

IUSU.L

IUSU.L Risk / Return Rank: 20
IUSU.L Sharpe Ratio Rank: 19
IUSU.L Sortino Ratio Rank: 19
IUSU.L Omega Ratio Rank: 19
IUSU.L Calmar Ratio Rank: 23
IUSU.L Martin Ratio Rank: 19

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.

GSPX.L vs. IUSU.L - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares Core S&P 500 UCITS ETF (GSPX.L) and iShares V PLC - iShares S&P 500 Utilities Sector UCITS ETF (IUSU.L). 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.

	GSPX.L	IUSU.L	Difference
Sharpe ratio: Return per unit of total volatility	2.34	0.65	+1.70
Sortino ratio: Return per unit of downside risk	3.39	0.98	+2.41
Omega ratio: Gain probability vs. loss probability	1.43	1.12	+0.31
Calmar ratio: Return relative to maximum drawdown	3.22	1.00	+2.21
Martin ratio: Return relative to average drawdown	14.09	2.13	+11.96
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

GSPX.L vs. IUSU.L - Sharpe Ratio Comparison

The current GSPX.L Sharpe Ratio is 2.34, which is higher than the IUSU.L Sharpe Ratio of 0.65. The chart below compares the historical Sharpe Ratios of GSPX.L and IUSU.L, 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

	GSPX.L	IUSU.L	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.34	0.65	+1.70
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.78	0.57	+0.21
Sharpe Ratio (All Time) Calculated using the full available price history	0.78	0.42	+0.36

Drawdowns

GSPX.L vs. IUSU.L - Drawdown Comparison

The maximum GSPX.L drawdown since its inception was -34.88%, which is greater than IUSU.L's maximum drawdown of -29.89%. Use the drawdown chart below to compare losses from any high point for GSPX.L and IUSU.L.

Drawdown Indicators

	GSPX.L	IUSU.L	Difference
Max Drawdown Largest peak-to-trough decline	-34.88%	-29.89%	-4.99%
Max Drawdown (1Y) Largest decline over 1 year	-8.43%	-9.51%	+1.08%
Max Drawdown (3Y) Largest decline over 3 years	-18.91%	-13.82%	-5.09%
Max Drawdown (5Y) Largest decline over 5 years	-25.77%	-29.89%	+4.12%
Current Drawdown Current decline from peak	-0.52%	-9.06%	+8.54%
Average Drawdown Average peak-to-trough decline	-5.61%	-8.80%	+3.19%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.93%	4.47%	-2.54%

Volatility

GSPX.L vs. IUSU.L - Volatility Comparison

The current volatility for iShares Core S&P 500 UCITS ETF (GSPX.L) is 3.17%, while iShares V PLC - iShares S&P 500 Utilities Sector UCITS ETF (IUSU.L) has a volatility of 5.31%. This indicates that GSPX.L experiences smaller price fluctuations and is considered to be less risky than IUSU.L based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	GSPX.L	IUSU.L	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.17%	5.31%	-2.14%
Volatility (6M) Calculated over the trailing 6-month period	8.48%	12.29%	-3.81%
Volatility (1Y) Calculated over the trailing 1-year period	11.57%	14.75%	-3.18%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.05%	16.69%	-0.64%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.63%	18.28%	-0.65%

GSPX.L vs. IUSU.L - Expense Ratio Comparison

GSPX.L has a 0.10% expense ratio, which is lower than IUSU.L's 0.15% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

GSPX.L vs. IUSU.L - Dividend Comparison

GSPX.L's dividend yield for the trailing twelve months is around 0.80%, while IUSU.L has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018
GSPX.L iShares Core S&P 500 UCITS ETF	0.80%	0.89%	0.99%	1.15%	1.40%	0.96%	1.31%	1.50%	0.11%
IUSU.L iShares V PLC - iShares S&P 500 Utilities Sector UCITS ETF	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both GSPX.L and IUSU.L in my portfolio?

GSPX.L and IUSU.L have a correlation of 0.02, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, GSPX.L or IUSU.L?

On fees, GSPX.L is cheaper at 0.10% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, GSPX.L or IUSU.L?

GSPX.L is cheaper with a 0.10% expense ratio, compared with 0.15% for IUSU.L.

What is the main difference between GSPX.L and IUSU.L?

GSPX.L is categorized as S&P 500, while IUSU.L is Utilities Equities. GSPX.L tracks S&P 500 Index, while IUSU.L tracks S&P 500 Capped 35/20 Utilities. Their fees differ too: 0.10% for GSPX.L and 0.15% for IUSU.L.