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ISF.L vs. MIDD.L
Performance
Return for Risk
Drawdowns
Volatility
Dividends

ISF.L vs. MIDD.L

Last updated Jun 5, 2026

ISF.L (iShares Core FTSE 100 UCITS ETF (Dist)) and MIDD.L (iShares FTSE 250 UCITS ETF) are both Europe Equities funds from iShares - ISF.L tracks the FTSE AllSh TR GBP while MIDD.L tracks the FTSE 250 Ex Investment Trust TR GBP. Both are passively managed. Over the past 10 years, ISF.L returned 9.12%/yr vs 5.54%/yr for MIDD.L. A 0.75 correlation means they provide meaningful diversification when combined. ISF.L charges 0.07%/yr vs 0.40%/yr for MIDD.L.

Performance

ISF.L vs. MIDD.L - Performance Comparison

The chart below illustrates the hypothetical performance of a £10,000 investment in iShares Core FTSE 100 UCITS ETF (Dist) (ISF.L) and iShares FTSE 250 UCITS ETF (MIDD.L). The values are adjusted to include any dividend payments, if applicable.

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Returns By Period

In the year-to-date period, ISF.L achieves a 6.13% return, which is significantly higher than MIDD.L's 5.26% return. Over the past 10 years, ISF.L has outperformed MIDD.L with an annualized return of 9.12%, while MIDD.L has yielded a comparatively lower 5.54% annualized return.

ISF.L

1D
0.26%
1M
1.75%
YTD
6.13%
6M
8.49%
1Y
21.32%
3Y*
14.88%
5Y*
11.88%
10Y*
9.12%

MIDD.L

1D
0.56%
1M
4.32%
YTD
5.26%
6M
7.17%
1Y
13.79%
3Y*
9.96%
5Y*
3.14%
10Y*
5.54%
*Multi-year figures are annualized to reflect compound growth (CAGR)

ISF.L vs. MIDD.L - Yearly Performance Comparison

2026 (YTD)202520242023202220212020201920182017
ISF.L
iShares Core FTSE 100 UCITS ETF (Dist)		6.13%25.97%9.28%7.81%4.83%17.68%-11.67%17.11%-8.96%13.10%
MIDD.L
iShares FTSE 250 UCITS ETF		5.26%12.44%7.33%7.76%-17.86%16.27%-5.34%28.46%-13.44%17.34%

Correlation

The correlation between ISF.L and MIDD.L is 0.71, 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

0.71

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

0.70

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

0.72

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

0.73

Correlation (All Time)
Calculated using the full available price history since Mar 30, 2004

0.75

The correlation between ISF.L and MIDD.L has been stable across timeframes, ranging from 0.70 to 0.75 - a consistent structural relationship.

ISF.L vs. MIDD.L - Sectors Allocation Comparison

Sectors
ISF.L
MIDD.L

Financial Services

24.8%
19.5%

Industrials

13.8%
19.9%

Healthcare

13.8%
4.4%

Consumer Defensive

12.8%
6.1%

Energy

11.9%
2.5%

Basic Materials

8.6%
6.6%

Utilities

5.3%
3.0%

Consumer Cyclical

4.7%
13.3%

Communication Services

2.6%
5.9%

Real Estate

0.9%
9.4%

Technology

0.8%
9.2%

Financial Services

ISF.L
24.8%
MIDD.L
19.5%

Industrials

ISF.L
13.8%
MIDD.L
19.9%

Healthcare

ISF.L
13.8%
MIDD.L
4.4%

Consumer Defensive

ISF.L
12.8%
MIDD.L
6.1%

Energy

ISF.L
11.9%
MIDD.L
2.5%

Basic Materials

ISF.L
8.6%
MIDD.L
6.6%

Utilities

ISF.L
5.3%
MIDD.L
3.0%

Consumer Cyclical

ISF.L
4.7%
MIDD.L
13.3%

Communication Services

ISF.L
2.6%
MIDD.L
5.9%

Real Estate

ISF.L
0.9%
MIDD.L
9.4%

Technology

ISF.L
0.8%
MIDD.L
9.2%

Compare stocks, funds, or ETFs

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iShares Core FTSE 100 UCITS ETF (Dist)

iShares FTSE 250 UCITS ETF

Often compared with ISF.L:
ISF.L vs. VUKE.LISF.L vs. HUKX.LISF.L vs. UKDV.LISF.L vs. XDAX.LISF.L vs. VUSA.ASISF.L vs. VOOISF.L vs. FEUI.L
Often compared with MIDD.L:
MIDD.L vs. VMID.LMIDD.L vs. CSUK.LMIDD.L vs. CUKS.LMIDD.L vs. HMWO.LMIDD.L vs. SWDA.LMIDD.L vs. FTAL.LMIDD.L vs. SPY

Return for Risk

ISF.L vs. MIDD.L — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.
ISF.L
ISF.L Risk / Return Rank: 5656
Overall Rank
ISF.L Sharpe Ratio Rank: 6060
Sharpe Ratio Rank
ISF.L Sortino Ratio Rank: 6060
Sortino Ratio Rank
ISF.L Omega Ratio Rank: 6262
Omega Ratio Rank
ISF.L Calmar Ratio Rank: 5050
Calmar Ratio Rank
ISF.L Martin Ratio Rank: 4949
Martin Ratio Rank
MIDD.L
MIDD.L Risk / Return Rank: 3030
Overall Rank
MIDD.L Sharpe Ratio Rank: 3131
Sharpe Ratio Rank
MIDD.L Sortino Ratio Rank: 3232
Sortino Ratio Rank
MIDD.L Omega Ratio Rank: 3131
Omega Ratio Rank
MIDD.L Calmar Ratio Rank: 2525
Calmar Ratio Rank
MIDD.L Martin Ratio Rank: 2929
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.

ISF.L vs. MIDD.L - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares Core FTSE 100 UCITS ETF (Dist) (ISF.L) and iShares FTSE 250 UCITS ETF (MIDD.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.

ISF.LMIDD.LDifference
Sharpe ratioReturn per unit of total volatility
1.98
1.10

+0.88

Sortino ratioReturn per unit of downside risk
2.78
1.67

+1.11

Omega ratioGain probability vs. loss probability

1.37

1.21

+0.17

Calmar ratioReturn relative to maximum drawdown

2.41

1.19

+1.22

Martin ratioReturn relative to average drawdown

8.18

4.19

+3.99

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

ISF.L vs. MIDD.L - Sharpe Ratio Comparison

The current ISF.L Sharpe Ratio is 1.98, which is higher than the MIDD.L Sharpe Ratio of 1.10. The chart below compares the historical Sharpe Ratios of ISF.L and MIDD.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

ISF.LMIDD.LDifference

Sharpe Ratio (1Y)

Calculated over the trailing 1-year period

1.98

1.10

+0.88

Sharpe Ratio (5Y)

Calculated over the trailing 5-year period

0.95

0.21

+0.74

Sharpe Ratio (10Y)

Calculated over the trailing 10-year period

0.61

0.33

+0.28

Sharpe Ratio (All Time)

Calculated using the full available price history

0.16

0.48

-0.32

Drawdowns

ISF.L vs. MIDD.L - Drawdown Comparison

The maximum ISF.L drawdown since its inception was -68.24%, which is greater than MIDD.L's maximum drawdown of -51.66%. Use the drawdown chart below to compare losses from any high point for ISF.L and MIDD.L.

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Drawdown Indicators

ISF.LMIDD.LDifference

Max Drawdown

Largest peak-to-trough decline

-68.24%

-51.66%

-16.58%

Max Drawdown (1Y)

Largest decline over 1 year

-8.82%

-11.54%

+2.72%

Max Drawdown (3Y)

Largest decline over 3 years

-12.69%

-16.92%

+4.23%

Max Drawdown (5Y)

Largest decline over 5 years

-12.69%

-29.93%

+17.24%

Max Drawdown (10Y)

Largest decline over 10 years

-34.13%

-41.60%

+7.47%

Current Drawdown

Current decline from peak

-3.90%

-0.77%

-3.13%

Average Drawdown

Average peak-to-trough decline

-21.87%

-8.76%

-13.11%

Ulcer Index

Depth and duration of drawdowns from previous peaks

2.60%

3.28%

-0.68%

Volatility

ISF.L vs. MIDD.L - Volatility Comparison

iShares Core FTSE 100 UCITS ETF (Dist) (ISF.L) and iShares FTSE 250 UCITS ETF (MIDD.L) have volatilities of 3.85% and 3.92%, 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

ISF.LMIDD.LDifference

Volatility (1M)

Calculated over the trailing 1-month period

3.85%

3.92%

-0.07%

Volatility (6M)

Calculated over the trailing 6-month period

9.31%

10.27%

-0.96%

Volatility (1Y)

Calculated over the trailing 1-year period

10.73%

12.49%

-1.76%

Volatility (5Y)

Calculated over the trailing 5-year period, annualized

12.56%

15.27%

-2.71%

Volatility (10Y)

Calculated over the trailing 10-year period, annualized

14.84%

16.54%

-1.70%

ISF.L vs. MIDD.L - Expense Ratio Comparison

ISF.L has a 0.07% expense ratio, which is lower than MIDD.L's 0.40% expense ratio.

Dividends

ISF.L vs. MIDD.L - Dividend Comparison

ISF.L's dividend yield for the trailing twelve months is around 2.86%, less than MIDD.L's 3.43% yield.

PositionTTM20252024202320222021202020192018201720162015
ISF.L
iShares Core FTSE 100 UCITS ETF (Dist)		2.86%3.01%3.71%3.86%3.75%3.76%3.11%4.47%4.44%3.96%3.79%4.12%
MIDD.L
iShares FTSE 250 UCITS ETF		3.43%3.56%3.05%3.17%2.76%2.01%1.51%2.72%3.07%2.80%2.67%2.80%

Frequently Asked Questions

ISF.L and MIDD.L have a correlation of 0.71, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

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

ISF.L is cheaper with a 0.07% expense ratio, compared with 0.40% for MIDD.L.

ISF.L tracks FTSE AllSh TR GBP, while MIDD.L tracks FTSE 250 Ex Investment Trust TR GBP. Their fees differ too: 0.07% for ISF.L and 0.40% for MIDD.L.

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