ISDU.L vs. FLXK.L
ISDU.L (iShares MSCI USA Islamic UCITS ETF) and FLXK.L (Franklin FTSE Korea UCITS ETF USD (Acc)) are both exchange-traded funds - ISDU.L is a Large Cap Blend Equities fund tracking the MSCI USA Islamic Index, while FLXK.L is a South Korea Equities fund tracking the FTSE Korea 30/18 Capped Index (Net Return). Both are passively managed. Over the past 5 years, ISDU.L returned 12.53%/yr vs 15.20%/yr for FLXK.L. A 0.60 correlation means they provide meaningful diversification when combined. ISDU.L charges 0.30%/yr vs 0.09%/yr for FLXK.L.
Performance
ISDU.L vs. FLXK.L - Performance Comparison
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Returns By Period
In the year-to-date period, ISDU.L achieves a 14.99% return, which is significantly lower than FLXK.L's 71.91% return.
ISDU.L
- 1D
- -1.35%
- 1M
- -4.71%
- 6M
- 12.48%
- YTD
- 14.99%
- 1Y
- 27.16%
- 3Y*
- 15.09%
- 5Y*
- 12.53%
- 10Y*
- 11.27%
FLXK.L
- 1D
- -2.04%
- 1M
- -22.39%
- 6M
- 50.11%
- YTD
- 71.91%
- 1Y
- 137.12%
- 3Y*
- 38.47%
- 5Y*
- 15.20%
- 10Y*
- —
ISDU.L vs. FLXK.L - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | |
|---|---|---|---|---|---|---|---|---|
ISDU.L iShares MSCI USA Islamic UCITS ETF | 14.99% | 15.85% | 9.35% | 25.84% | -11.90% | 29.59% | 6.85% | 14.73% |
FLXK.L Franklin FTSE Korea UCITS ETF USD (Acc) | 71.91% | 94.79% | -21.63% | 20.77% | -28.01% | -6.85% | 47.31% | 13.27% |
Correlation
The correlation between ISDU.L and FLXK.L is 0.68, 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 | 0.68 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.61 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.61 |
Correlation (All Time) Calculated using the full available price history since Jun 4, 2019 | 0.60 |
The correlation between ISDU.L and FLXK.L has been stable across timeframes, ranging from 0.60 to 0.68 - a consistent structural relationship.
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Return for Risk
ISDU.L vs. FLXK.L — Risk / Return Rank
ISDU.L
FLXK.L
ISDU.L vs. FLXK.L - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares MSCI USA Islamic UCITS ETF (ISDU.L) and Franklin FTSE Korea UCITS ETF USD (Acc) (FLXK.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.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| ISDU.L | FLXK.L | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -1.21 | ||
| Sortino ratioReturn per unit of downside risk | -0.67 | ||
| Omega ratioGain probability vs. loss probability | 1.32 | 1.45 | -0.13 |
| Calmar ratioReturn relative to maximum drawdown | 3.87 | 5.32 | -1.45 |
| Martin ratioReturn relative to average drawdown | 10.99 | 17.39 | -6.39 |
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Drawdowns
ISDU.L vs. FLXK.L - Drawdown Comparison
The maximum ISDU.L drawdown since its inception was -44.43%, smaller than the maximum FLXK.L drawdown of -49.43%. Use the drawdown chart below to compare losses from any high point for ISDU.L and FLXK.L.
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Drawdown Indicators
| ISDU.L | FLXK.L | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -44.43% | -49.43% | +5.00% |
Max Drawdown (1Y)Largest decline over 1 year | -6.98% | -25.64% | +18.66% |
Max Drawdown (3Y)Largest decline over 3 years | -21.98% | -28.54% | +6.56% |
Max Drawdown (5Y)Largest decline over 5 years | -21.98% | -47.00% | +25.02% |
Max Drawdown (10Y)Largest decline over 10 years | -33.00% | — | — |
Current DrawdownCurrent decline from peak | -6.98% | -25.64% | +18.66% |
Average DrawdownAverage peak-to-trough decline | -6.22% | -20.23% | +14.01% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 2.46% | 7.86% | -5.40% |
Volatility
ISDU.L vs. FLXK.L - Volatility Comparison
The current volatility for iShares MSCI USA Islamic UCITS ETF (ISDU.L) is 6.24%, while Franklin FTSE Korea UCITS ETF USD (Acc) (FLXK.L) has a volatility of 18.88%. This indicates that ISDU.L experiences smaller price fluctuations and is considered to be less risky than FLXK.L based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| ISDU.L | FLXK.L | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 6.24% | 18.88% | -12.64% |
Volatility (6M)Calculated over the trailing 6-month period | 12.43% | 41.57% | -29.14% |
Volatility (1Y)Calculated over the trailing 1-year period | 14.97% | 45.12% | -30.15% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 16.51% | 29.63% | -13.12% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 16.28% | 29.60% | -13.32% |
ISDU.L vs. FLXK.L - Expense Ratio Comparison
ISDU.L has a 0.30% expense ratio, which is higher than FLXK.L's 0.09% expense ratio.
Dividends
ISDU.L vs. FLXK.L - Dividend Comparison
ISDU.L's dividend yield for the trailing twelve months is around 0.66%, while FLXK.L has not paid dividends to shareholders.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
FLXK.L Franklin FTSE Korea 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 | 0.66% | 0.39% | 0.90% | 1.10% | 1.52% | 1.01% | 1.39% | 1.37% | 1.49% | 1.38% | 1.34% | 1.43% |
Frequently Asked Questions
ISDU.L and FLXK.L have a correlation of 0.68, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
On fees, FLXK.L is cheaper at 0.09% per year. The better choice depends on whether you care most about return, fees, risk, or income.
FLXK.L is cheaper with a 0.09% expense ratio, compared with 0.30% for ISDU.L.
ISDU.L is categorized as Large Cap Blend Equities, while FLXK.L is South Korea Equities. ISDU.L tracks MSCI USA Islamic Index, while FLXK.L tracks FTSE Korea 30/18 Capped Index (Net Return). They also come from different issuers: iShares and Franklin. Their fees differ too: 0.30% for ISDU.L and 0.09% for FLXK.L.
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