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CUS1.L vs. ISP6.L
Performance
Return for Risk
Drawdowns
Volatility
Dividends

CUS1.L vs. ISP6.L

Last updated Jun 5, 2026

CUS1.L (iShares MSCI USA Small Cap ESG Enhanced UCITS ETF (Acc)) and ISP6.L (iShares S&P SmallCap 600 UCITS ETF) are both Small Cap Blend Equities funds from iShares tracking the Russell 2000 TR USD. Both are passively managed. Over the past 10 years, CUS1.L returned 11.83%/yr vs 11.01%/yr for ISP6.L. Their correlation of 0.88 suggests significant overlap in exposure. CUS1.L charges 0.43%/yr vs 0.40%/yr for ISP6.L.

Performance

CUS1.L vs. ISP6.L - Performance Comparison

The chart below illustrates the hypothetical performance of a £10,000 investment in iShares MSCI USA Small Cap ESG Enhanced UCITS ETF (Acc) (CUS1.L) and iShares S&P SmallCap 600 UCITS ETF (ISP6.L). The values are adjusted to include any dividend payments, if applicable.

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Returns By Period

The year-to-date returns for both stocks are quite close, with CUS1.L having a 15.99% return and ISP6.L slightly lower at 15.45%. Over the past 10 years, CUS1.L has outperformed ISP6.L with an annualized return of 11.83%, while ISP6.L has yielded a comparatively lower 11.01% annualized return.

CUS1.L

1D
1.06%
1M
4.90%
YTD
15.99%
6M
15.37%
1Y
35.71%
3Y*
13.68%
5Y*
7.82%
10Y*
11.83%

ISP6.L

1D
1.09%
1M
2.81%
YTD
15.45%
6M
14.84%
1Y
34.21%
3Y*
12.19%
5Y*
6.63%
10Y*
11.01%
*Multi-year figures are annualized to reflect compound growth (CAGR)

CUS1.L vs. ISP6.L - Yearly Performance Comparison

2026 (YTD)202520242023202220212020201920182017
CUS1.L
iShares MSCI USA Small Cap ESG Enhanced UCITS ETF (Acc)		15.99%2.68%11.54%11.30%-7.26%19.95%14.64%22.34%-6.43%6.42%
ISP6.L
iShares S&P SmallCap 600 UCITS ETF		15.45%-0.91%8.76%10.98%-6.72%27.86%6.87%17.51%-4.56%3.05%

Correlation

The correlation between CUS1.L and ISP6.L is 0.94, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

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

0.94

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

0.96

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

0.96

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

0.96

Correlation (All Time)
Calculated using the full available price history since Sep 17, 2010

0.88

The correlation between CUS1.L and ISP6.L has been stable across timeframes, ranging from 0.88 to 0.96 - a consistent structural relationship.

CUS1.L vs. ISP6.L - Sectors Allocation Comparison

Sectors
CUS1.L
ISP6.L

Industrials

19.6%
15.1%

Technology

16.8%
17.0%

Financial Services

15.1%
16.8%

Healthcare

12.6%
11.0%

Consumer Cyclical

10.5%
12.7%

Real Estate

7.0%
7.6%

Energy

5.6%
5.8%

Consumer Defensive

3.9%
3.6%

Basic Materials

3.9%
4.9%

Utilities

2.7%
1.9%

Communication Services

2.5%
3.5%

Industrials

CUS1.L
19.6%
ISP6.L
15.1%

Technology

CUS1.L
16.8%
ISP6.L
17.0%

Financial Services

CUS1.L
15.1%
ISP6.L
16.8%

Healthcare

CUS1.L
12.6%
ISP6.L
11.0%

Consumer Cyclical

CUS1.L
10.5%
ISP6.L
12.7%

Real Estate

CUS1.L
7.0%
ISP6.L
7.6%

Energy

CUS1.L
5.6%
ISP6.L
5.8%

Consumer Defensive

CUS1.L
3.9%
ISP6.L
3.6%

Basic Materials

CUS1.L
3.9%
ISP6.L
4.9%

Utilities

CUS1.L
2.7%
ISP6.L
1.9%

Communication Services

CUS1.L
2.5%
ISP6.L
3.5%

Compare stocks, funds, or ETFs

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iShares MSCI USA Small Cap ESG Enhanced UCITS ETF (Acc)

iShares S&P SmallCap 600 UCITS ETF

Often compared with CUS1.L:
CUS1.L vs. WLDS.LCUS1.L vs. AVUVCUS1.L vs. R2SC.LCUS1.L vs. CSPX.LCUS1.L vs. AMZNCUS1.L vs. USSC.LCUS1.L vs. VIOG
Often compared with ISP6.L:
ISP6.L vs. IJRISP6.L vs. IEEM.LISP6.L vs. USSC.LISP6.L vs. IWMISP6.L vs. CSPX.ASISP6.L vs. VIGISP6.L vs. VOO

Return for Risk

CUS1.L vs. ISP6.L — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.
CUS1.L
CUS1.L Risk / Return Rank: 7878
Overall Rank
CUS1.L Sharpe Ratio Rank: 7575
Sharpe Ratio Rank
CUS1.L Sortino Ratio Rank: 7373
Sortino Ratio Rank
CUS1.L Omega Ratio Rank: 7070
Omega Ratio Rank
CUS1.L Calmar Ratio Rank: 9090
Calmar Ratio Rank
CUS1.L Martin Ratio Rank: 8484
Martin Ratio Rank
ISP6.L
ISP6.L Risk / Return Rank: 7474
Overall Rank
ISP6.L Sharpe Ratio Rank: 6868
Sharpe Ratio Rank
ISP6.L Sortino Ratio Rank: 6767
Sortino Ratio Rank
ISP6.L Omega Ratio Rank: 6666
Omega Ratio Rank
ISP6.L Calmar Ratio Rank: 8989
Calmar Ratio Rank
ISP6.L Martin Ratio Rank: 8181
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.

CUS1.L vs. ISP6.L - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares MSCI USA Small Cap ESG Enhanced UCITS ETF (Acc) (CUS1.L) and iShares S&P SmallCap 600 UCITS ETF (ISP6.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.

CUS1.LISP6.LDifference
Sharpe ratioReturn per unit of total volatility
2.40
2.20

+0.20

Sortino ratioReturn per unit of downside risk
3.25
3.03

+0.21

Omega ratioGain probability vs. loss probability

1.41

1.39

+0.02

Calmar ratioReturn relative to maximum drawdown

5.52

5.28

+0.24

Martin ratioReturn relative to average drawdown

17.02

15.98

+1.03

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

CUS1.L vs. ISP6.L - Sharpe Ratio Comparison

The current CUS1.L Sharpe Ratio is 2.40, which is comparable to the ISP6.L Sharpe Ratio of 2.20. The chart below compares the historical Sharpe Ratios of CUS1.L and ISP6.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

CUS1.LISP6.LDifference

Sharpe Ratio (1Y)

Calculated over the trailing 1-year period

2.40

2.20

+0.20

Sharpe Ratio (5Y)

Calculated over the trailing 5-year period

0.41

0.35

+0.07

Sharpe Ratio (10Y)

Calculated over the trailing 10-year period

0.60

0.54

+0.07

Sharpe Ratio (All Time)

Calculated using the full available price history

0.71

0.58

+0.13

Drawdowns

CUS1.L vs. ISP6.L - Drawdown Comparison

The maximum CUS1.L drawdown since its inception was -35.26%, smaller than the maximum ISP6.L drawdown of -39.08%. Use the drawdown chart below to compare losses from any high point for CUS1.L and ISP6.L.

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Drawdown Indicators

CUS1.LISP6.LDifference

Max Drawdown

Largest peak-to-trough decline

-35.26%

-39.08%

+3.82%

Max Drawdown (1Y)

Largest decline over 1 year

-6.44%

-6.45%

+0.01%

Max Drawdown (3Y)

Largest decline over 3 years

-28.89%

-30.26%

+1.37%

Max Drawdown (5Y)

Largest decline over 5 years

-28.89%

-30.26%

+1.37%

Max Drawdown (10Y)

Largest decline over 10 years

-35.26%

-39.08%

+3.82%

Current Drawdown

Current decline from peak

0.00%

0.00%

0.00%

Average Drawdown

Average peak-to-trough decline

-6.38%

-7.53%

+1.15%

Ulcer Index

Depth and duration of drawdowns from previous peaks

2.09%

2.13%

-0.04%

Volatility

CUS1.L vs. ISP6.L - Volatility Comparison

iShares MSCI USA Small Cap ESG Enhanced UCITS ETF (Acc) (CUS1.L) and iShares S&P SmallCap 600 UCITS ETF (ISP6.L) have volatilities of 3.89% and 3.96%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

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Volatility by Period

CUS1.LISP6.LDifference

Volatility (1M)

Calculated over the trailing 1-month period

3.89%

3.96%

-0.07%

Volatility (6M)

Calculated over the trailing 6-month period

9.97%

10.32%

-0.35%

Volatility (1Y)

Calculated over the trailing 1-year period

14.81%

15.51%

-0.70%

Volatility (5Y)

Calculated over the trailing 5-year period, annualized

18.85%

19.09%

-0.24%

Volatility (10Y)

Calculated over the trailing 10-year period, annualized

19.56%

20.45%

-0.89%

CUS1.L vs. ISP6.L - Expense Ratio Comparison

CUS1.L has a 0.43% expense ratio, which is higher than ISP6.L's 0.40% expense ratio.

Dividends

CUS1.L vs. ISP6.L - Dividend Comparison

CUS1.L has not paid dividends to shareholders, while ISP6.L's dividend yield for the trailing twelve months is around 1.02%.

PositionTTM20252024202320222021202020192018201720162015
CUS1.L
iShares MSCI USA Small Cap ESG Enhanced UCITS ETF (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%
ISP6.L
iShares S&P SmallCap 600 UCITS ETF		1.02%1.22%1.15%1.08%1.00%0.65%0.94%0.97%0.96%0.78%0.77%0.53%

Frequently Asked Questions

With a correlation of 0.94, CUS1.L and ISP6.L 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.

On fees, ISP6.L is cheaper at 0.40% per year. The better choice depends on whether you care most about return, fees, risk, or income.

ISP6.L is cheaper with a 0.40% expense ratio, compared with 0.43% for CUS1.L.

Both ETFs track Russell 2000 TR USD. Their fees differ too: 0.43% for CUS1.L and 0.40% for ISP6.L.

Portfolio Optimizer

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