IMBS.L vs. CSP1.L
IMBS.L (iShares US Mortgage Backed Securities UCITS ETF USD (Dist)) and CSP1.L (iShares Core S&P 500 UCITS ETF) are both exchange-traded funds - IMBS.L is a Global Equities fund tracking the iShares US Mortgage Backed Securities UCITS ETF USD (Dist), while CSP1.L is a S&P 500 fund tracking the S&P 500 Index. Both are passively managed. Over the past 10 years, IMBS.L returned 1.01%/yr vs 15.00%/yr for CSP1.L. At a 0.07 correlation, their price movements are largely independent. IMBS.L charges 0.28%/yr vs 0.07%/yr for CSP1.L.
Performance
IMBS.L vs. CSP1.L - Performance Comparison
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Different Trading Currencies
IMBS.L is traded in USD, while CSP1.L is traded in GBp. To make them comparable, the CSP1.L values have been converted to USD using the latest available exchange rates.
Returns By Period
In the year-to-date period, IMBS.L achieves a -0.33% return, which is significantly lower than CSP1.L's 10.64% return. Over the past 10 years, IMBS.L has underperformed CSP1.L with an annualized return of 1.01%, while CSP1.L has yielded a comparatively higher 15.00% annualized return.
IMBS.L
- 1D
- -0.04%
- 1M
- -0.33%
- 6M
- -0.09%
- YTD
- -0.33%
- 1Y
- 5.49%
- 3Y*
- 4.05%
- 5Y*
- 0.06%
- 10Y*
- 1.01%
CSP1.L
- 1D
- 0.64%
- 1M
- 0.52%
- 6M
- 10.36%
- YTD
- 10.64%
- 1Y
- 22.24%
- 3Y*
- 20.23%
- 5Y*
- 13.16%
- 10Y*
- 15.00%
IMBS.L vs. CSP1.L - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
IMBS.L iShares US Mortgage Backed Securities UCITS ETF USD (Dist) | -0.33% | 8.60% | 1.54% | 3.57% | -11.37% | -1.69% | 4.04% | 6.52% | -0.09% | 2.90% |
CSP1.L iShares Core S&P 500 UCITS ETF | 10.64% | 17.63% | 25.22% | 26.11% | -18.77% | 29.88% | 17.14% | 31.49% | -5.65% | 21.38% |
Correlation
The correlation between IMBS.L and CSP1.L is 0.17, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.17 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.17 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.15 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.07 |
Correlation (All Time) Calculated using the full available price history since May 23, 2016 | 0.07 |
The correlation between IMBS.L and CSP1.L shifts across timeframes, from 0.07 (all time) to 0.17 (3 years), reflecting how their relationship changes across market environments.
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Return for Risk
IMBS.L vs. CSP1.L — Risk / Return Rank
IMBS.L
CSP1.L
IMBS.L vs. CSP1.L - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares US Mortgage Backed Securities UCITS ETF USD (Dist) (IMBS.L) and iShares Core S&P 500 UCITS ETF (CSP1.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.
| IMBS.L | CSP1.L | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -1.06 | ||
| Sortino ratioReturn per unit of downside risk | -1.52 | ||
| Omega ratioGain probability vs. loss probability | 1.15 | 1.33 | -0.19 |
| Calmar ratioReturn relative to maximum drawdown | 1.60 | 2.55 | -0.95 |
| Martin ratioReturn relative to average drawdown | 5.11 | 10.42 | -5.31 |
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Drawdowns
IMBS.L vs. CSP1.L - Drawdown Comparison
The maximum IMBS.L drawdown since its inception was -18.09%, smaller than the maximum CSP1.L drawdown of -33.51%. Use the drawdown chart below to compare losses from any high point for IMBS.L and CSP1.L.
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Drawdown Indicators
| IMBS.L | CSP1.L | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -18.09% | -33.51% | +15.42% |
Max Drawdown (1Y)Largest decline over 1 year | -3.26% | -8.68% | +5.42% |
Max Drawdown (3Y)Largest decline over 3 years | -7.51% | -19.33% | +11.82% |
Max Drawdown (5Y)Largest decline over 5 years | -17.67% | -25.16% | +7.49% |
Max Drawdown (10Y)Largest decline over 10 years | -18.09% | -33.51% | +15.42% |
Current DrawdownCurrent decline from peak | -1.49% | -0.22% | -1.27% |
Average DrawdownAverage peak-to-trough decline | -4.22% | -4.07% | -0.15% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.02% | 2.13% | -1.11% |
Volatility
IMBS.L vs. CSP1.L - Volatility Comparison
The current volatility for iShares US Mortgage Backed Securities UCITS ETF USD (Dist) (IMBS.L) is 1.37%, while iShares Core S&P 500 UCITS ETF (CSP1.L) has a volatility of 3.12%. This indicates that IMBS.L experiences smaller price fluctuations and is considered to be less risky than CSP1.L based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| IMBS.L | CSP1.L | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.37% | 3.12% | -1.75% |
Volatility (6M)Calculated over the trailing 6-month period | 4.22% | 8.66% | -4.44% |
Volatility (1Y)Calculated over the trailing 1-year period | 6.17% | 11.64% | -5.47% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 7.77% | 20.99% | -13.22% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 6.35% | 18.84% | -12.49% |
IMBS.L vs. CSP1.L - Expense Ratio Comparison
IMBS.L has a 0.28% expense ratio, which is higher than CSP1.L's 0.07% expense ratio.
Dividends
IMBS.L vs. CSP1.L - Dividend Comparison
IMBS.L's dividend yield for the trailing twelve months is around 3.74%, while CSP1.L has not paid dividends to shareholders.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 |
|---|---|---|---|---|---|---|---|---|---|---|---|
CSP1.L iShares Core S&P 500 UCITS ETF | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
IMBS.L iShares US Mortgage Backed Securities UCITS ETF USD (Dist) | 3.74% | 3.58% | 3.55% | 3.23% | 2.42% | 2.24% | 2.56% | 2.99% | 3.04% | 2.89% | 1.53% |
Frequently Asked Questions
IMBS.L and CSP1.L have a correlation of 0.17, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
On fees, CSP1.L is cheaper at 0.07% per year. The better choice depends on whether you care most about return, fees, risk, or income.
CSP1.L is cheaper with a 0.07% expense ratio, compared with 0.28% for IMBS.L.
IMBS.L is categorized as Global Equities, while CSP1.L is S&P 500. IMBS.L tracks iShares US Mortgage Backed Securities UCITS ETF USD (Dist), while CSP1.L tracks S&P 500 Index. Their fees differ too: 0.28% for IMBS.L and 0.07% for CSP1.L.
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