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CU1.L vs. ISDU.L
Performance
Return for Risk
Drawdowns
Volatility
Dividends

CU1.L vs. ISDU.L

Last updated Jun 4, 2026

CU1.L (iShares MSCI USA UCITS ETF USD (Acc)) and ISDU.L (iShares MSCI USA Islamic UCITS ETF) are both Large Cap Blend Equities funds from iShares - CU1.L tracks the Russell 1000 TR USD while ISDU.L tracks the MSCI USA Islamic Index. Both are passively managed. Over the past 10 years, CU1.L returned 16.03%/yr vs 13.48%/yr for ISDU.L. Their correlation of 0.81 suggests significant overlap in exposure. CU1.L charges 0.33%/yr vs 0.30%/yr for ISDU.L.

Performance

CU1.L vs. ISDU.L - Performance Comparison

The chart below illustrates the hypothetical performance of a £10,000 investment in iShares MSCI USA UCITS ETF USD (Acc) (CU1.L) and iShares MSCI USA Islamic UCITS ETF (ISDU.L). The values are adjusted to include any dividend payments, if applicable.

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Different Trading Currencies

CU1.L is traded in GBp, while ISDU.L is traded in USD. To make them comparable, the ISDU.L values have been converted to GBp using the latest available exchange rates.

Returns By Period

In the year-to-date period, CU1.L achieves a 10.47% return, which is significantly lower than ISDU.L's 24.08% return. Over the past 10 years, CU1.L has outperformed ISDU.L with an annualized return of 16.03%, while ISDU.L has yielded a comparatively lower 13.48% annualized return.

CU1.L

1D
-0.20%
1M
6.10%
YTD
10.47%
6M
10.38%
1Y
28.76%
3Y*
19.44%
5Y*
14.49%
10Y*
16.03%

ISDU.L

1D
1.09%
1M
14.48%
YTD
24.08%
6M
24.22%
1Y
43.22%
3Y*
17.43%
5Y*
15.73%
10Y*
13.48%
*Multi-year figures are annualized to reflect compound growth (CAGR)

CU1.L vs. ISDU.L - Yearly Performance Comparison

2026 (YTD)202520242023202220212020201920182017
CU1.L
iShares MSCI USA UCITS ETF USD (Acc)		10.47%9.22%27.38%20.66%-10.62%28.72%16.30%26.24%-0.40%10.55%
ISDU.L
iShares MSCI USA Islamic UCITS ETF		24.08%8.03%11.27%19.55%-1.43%30.82%3.71%16.03%-0.47%4.17%

Correlation

The correlation between CU1.L and ISDU.L is 0.78, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

Correlation
Correlation (1Y)
Calculated over the trailing 1-year period

0.78

Correlation (3Y)
Calculated over the trailing 3-year period

0.84

Correlation (5Y)
Calculated over the trailing 5-year period

0.84

Correlation (10Y)
Calculated over the trailing 10-year period

0.86

Correlation (All Time)
Calculated using the full available price history since Sep 24, 2010

0.81

The correlation between CU1.L and ISDU.L has been stable across timeframes, ranging from 0.78 to 0.86 - a consistent structural relationship.

CU1.L vs. ISDU.L - Sectors Allocation Comparison

Sectors
CU1.L
ISDU.L

Technology

35.4%
49.7%

Financial Services

11.6%

-

Communication Services

11.3%
0.4%

Consumer Cyclical

10.2%
8.8%

Healthcare

8.6%
10.8%

Industrials

8.5%
7.7%

Consumer Defensive

4.8%
4.2%

Energy

3.6%
12.3%

Utilities

2.3%
0.7%

Real Estate

1.9%
0.1%

Basic Materials

1.8%
5.5%

Technology

CU1.L
35.4%
ISDU.L
49.7%

Financial Services

CU1.L
11.6%
ISDU.L

-

Communication Services

CU1.L
11.3%
ISDU.L
0.4%

Consumer Cyclical

CU1.L
10.2%
ISDU.L
8.8%

Healthcare

CU1.L
8.6%
ISDU.L
10.8%

Industrials

CU1.L
8.5%
ISDU.L
7.7%

Consumer Defensive

CU1.L
4.8%
ISDU.L
4.2%

Energy

CU1.L
3.6%
ISDU.L
12.3%

Utilities

CU1.L
2.3%
ISDU.L
0.7%

Real Estate

CU1.L
1.9%
ISDU.L
0.1%

Basic Materials

CU1.L
1.8%
ISDU.L
5.5%

Compare stocks, funds, or ETFs

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iShares MSCI USA UCITS ETF USD (Acc)

iShares MSCI USA Islamic UCITS ETF

Often compared with CU1.L:
CU1.L vs. XDUS.LCU1.L vs. CSP1.LCU1.L vs. QQQCU1.L vs. VUGCU1.L vs. LGUG.LCU1.L vs. SPXLCU1.L vs. MVEA.L
Often compared with ISDU.L:
ISDU.L vs. ISDW.LISDU.L vs. SPUSISDU.L vs. IGDA.LISDU.L vs. SPWOISDU.L vs. BBUS.LISDU.L vs. BBSU.LISDU.L vs. FLXU.L

Return for Risk

CU1.L vs. ISDU.L — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.
CU1.L
CU1.L Risk / Return Rank: 7878
Overall Rank
CU1.L Sharpe Ratio Rank: 8383
Sharpe Ratio Rank
CU1.L Sortino Ratio Rank: 8181
Sortino Ratio Rank
CU1.L Omega Ratio Rank: 8484
Omega Ratio Rank
CU1.L Calmar Ratio Rank: 7575
Calmar Ratio Rank
CU1.L Martin Ratio Rank: 7070
Martin Ratio Rank
ISDU.L
ISDU.L Risk / Return Rank: 9090
Overall Rank
ISDU.L Sharpe Ratio Rank: 9191
Sharpe Ratio Rank
ISDU.L Sortino Ratio Rank: 9292
Sortino Ratio Rank
ISDU.L Omega Ratio Rank: 8888
Omega Ratio Rank
ISDU.L Calmar Ratio Rank: 9191
Calmar Ratio Rank
ISDU.L Martin Ratio Rank: 8989
Martin Ratio Rank
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.

CU1.L vs. ISDU.L - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares MSCI USA UCITS ETF USD (Acc) (CU1.L) and iShares MSCI USA Islamic UCITS ETF (ISDU.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.

CU1.LISDU.LDifference
Sharpe ratioReturn per unit of total volatility
2.70
3.30

-0.59

Sortino ratioReturn per unit of downside risk
3.62
4.35

-0.73

Omega ratioGain probability vs. loss probability

1.50

1.59

-0.08

Calmar ratioReturn relative to maximum drawdown

3.73

7.35

-3.63

Martin ratioReturn relative to average drawdown

12.95

22.91

-9.96

Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

CU1.L vs. ISDU.L - Sharpe Ratio Comparison

The current CU1.L Sharpe Ratio is 2.70, which is comparable to the ISDU.L Sharpe Ratio of 3.30. The chart below compares the historical Sharpe Ratios of CU1.L and ISDU.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.

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Sharpe Ratios by Period

CU1.LISDU.LDifference

Sharpe Ratio (1Y)

Calculated over the trailing 1-year period

2.70

3.30

-0.59

Sharpe Ratio (5Y)

Calculated over the trailing 5-year period

1.00

1.01

-0.01

Sharpe Ratio (10Y)

Calculated over the trailing 10-year period

1.02

0.82

+0.20

Sharpe Ratio (All Time)

Calculated using the full available price history

1.11

0.80

+0.30

Drawdowns

CU1.L vs. ISDU.L - Drawdown Comparison

The maximum CU1.L drawdown since its inception was -25.87%, roughly equal to the maximum ISDU.L drawdown of -24.76%. Use the drawdown chart below to compare losses from any high point for CU1.L and ISDU.L.

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Drawdown Indicators

CU1.LISDU.LDifference

Max Drawdown

Largest peak-to-trough decline

-25.87%

-24.76%

-1.11%

Max Drawdown (1Y)

Largest decline over 1 year

-7.68%

-5.85%

-1.83%

Max Drawdown (3Y)

Largest decline over 3 years

-21.55%

-24.06%

+2.51%

Max Drawdown (5Y)

Largest decline over 5 years

-21.55%

-24.06%

+2.51%

Max Drawdown (10Y)

Largest decline over 10 years

-25.87%

-24.76%

-1.11%

Current Drawdown

Current decline from peak

-0.20%

0.00%

-0.20%

Average Drawdown

Average peak-to-trough decline

-3.43%

-3.88%

+0.45%

Ulcer Index

Depth and duration of drawdowns from previous peaks

2.22%

1.88%

+0.34%

Volatility

CU1.L vs. ISDU.L - Volatility Comparison

The current volatility for iShares MSCI USA UCITS ETF USD (Acc) (CU1.L) is 2.63%, while iShares MSCI USA Islamic UCITS ETF (ISDU.L) has a volatility of 5.10%. This indicates that CU1.L experiences smaller price fluctuations and is considered to be less risky than ISDU.L based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

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Volatility by Period

CU1.LISDU.LDifference

Volatility (1M)

Calculated over the trailing 1-month period

2.63%

5.10%

-2.47%

Volatility (6M)

Calculated over the trailing 6-month period

7.16%

9.92%

-2.76%

Volatility (1Y)

Calculated over the trailing 1-year period

10.67%

13.13%

-2.46%

Volatility (5Y)

Calculated over the trailing 5-year period, annualized

14.55%

15.64%

-1.09%

Volatility (10Y)

Calculated over the trailing 10-year period, annualized

15.76%

16.42%

-0.66%

CU1.L vs. ISDU.L - Expense Ratio Comparison

CU1.L has a 0.33% expense ratio, which is higher than ISDU.L's 0.30% expense ratio.

Dividends

CU1.L vs. ISDU.L - Dividend Comparison

CU1.L has not paid dividends to shareholders, while ISDU.L's dividend yield for the trailing twelve months is around 0.61%.

PositionTTM20252024202320222021202020192018201720162015
CU1.L
iShares MSCI USA UCITS ETF USD (Acc)		0.00%0.00%0.00%0.00%0.00%0.00%0.00%0.00%0.00%0.00%0.00%0.00%
ISDU.L
iShares MSCI USA Islamic UCITS ETF		0.61%0.74%0.90%1.10%1.52%1.01%1.39%1.37%1.49%1.38%1.34%1.43%

Frequently Asked Questions

CU1.L and ISDU.L have a correlation of 0.78, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

On fees, ISDU.L is cheaper at 0.30% per year. The better choice depends on whether you care most about return, fees, risk, or income.

ISDU.L is cheaper with a 0.30% expense ratio, compared with 0.33% for CU1.L.

CU1.L tracks Russell 1000 TR USD, while ISDU.L tracks MSCI USA Islamic Index. Their fees differ too: 0.33% for CU1.L and 0.30% for ISDU.L.

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