IDTL.L vs. USTY.L
IDTL.L (iShares Treasury Bond 20+ UCITS) and USTY.L (SPDR Bloomberg US Treasury Bond UCITS ETF) are both Government Bonds funds - IDTL.L tracks the ICE U.S. Treasury 20+ Year Bond Index while USTY.L tracks the Bloomberg US Treasury Index. Both are passively managed. Over the past 10 years, IDTL.L returned -1.51%/yr vs 1.54%/yr for USTY.L. A 0.61 correlation means they provide meaningful diversification when combined. IDTL.L charges 0.07%/yr vs 0.05%/yr for USTY.L.
Performance
IDTL.L vs. USTY.L - Performance Comparison
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Different Trading Currencies
IDTL.L is traded in USD, while USTY.L is traded in GBP. To make them comparable, the USTY.L values have been converted to USD using the latest available exchange rates.
Returns By Period
In the year-to-date period, IDTL.L achieves a -1.14% return, which is significantly lower than USTY.L's 0.41% return. Over the past 10 years, IDTL.L has underperformed USTY.L with an annualized return of -1.51%, while USTY.L has yielded a comparatively higher 1.54% annualized return.
IDTL.L
- 1D
- 0.36%
- 1M
- 0.66%
- YTD
- -1.14%
- 6M
- -1.07%
- 1Y
- 3.86%
- 3Y*
- -1.56%
- 5Y*
- -6.07%
- 10Y*
- -1.51%
USTY.L
- 1D
- 0.26%
- 1M
- 0.28%
- YTD
- 0.41%
- 6M
- 0.90%
- 1Y
- 5.00%
- 3Y*
- 3.82%
- 5Y*
- 0.31%
- 10Y*
- 1.54%
IDTL.L vs. USTY.L - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
IDTL.L iShares Treasury Bond 20+ UCITS | -1.14% | 4.67% | -7.18% | 2.22% | -30.42% | -4.71% | 17.11% | 15.67% | -1.84% | 8.97% |
USTY.L SPDR Bloomberg US Treasury Bond UCITS ETF | 0.41% | 7.65% | 1.64% | 3.84% | -12.17% | -1.76% | 7.78% | 8.38% | 1.15% | 2.48% |
Correlation
The correlation between IDTL.L and USTY.L is 0.54, 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 | 0.54 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.67 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.67 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.62 |
Correlation (All Time) Calculated using the full available price history since Sep 21, 2015 | 0.61 |
The correlation between IDTL.L and USTY.L shifts across timeframes, from 0.54 (1 year) to 0.67 (5 years), reflecting how their relationship changes across market environments.
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Return for Risk
IDTL.L vs. USTY.L — Risk / Return Rank
IDTL.L
USTY.L
IDTL.L vs. USTY.L - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares Treasury Bond 20+ UCITS (IDTL.L) and SPDR Bloomberg US Treasury Bond UCITS ETF (USTY.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.
| IDTL.L | USTY.L | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.54 | ||
| Sortino ratioReturn per unit of downside risk | -0.80 | ||
| Omega ratioGain probability vs. loss probability | 1.07 | 1.16 | -0.09 |
| Calmar ratioReturn relative to maximum drawdown | 0.50 | 1.46 | -0.95 |
| Martin ratioReturn relative to average drawdown | 1.27 | 4.56 | -3.29 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| IDTL.L | USTY.L | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.39 | 0.94 | -0.54 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | -0.40 | 0.04 | -0.45 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | -0.10 | 0.22 | -0.33 |
Sharpe Ratio (All Time)Calculated using the full available price history | -0.08 | 0.26 | -0.34 |
Drawdowns
IDTL.L vs. USTY.L - Drawdown Comparison
The maximum IDTL.L drawdown since its inception was -48.31%, which is greater than USTY.L's maximum drawdown of -18.61%. Use the drawdown chart below to compare losses from any high point for IDTL.L and USTY.L.
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Drawdown Indicators
| IDTL.L | USTY.L | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -48.31% | -18.61% | -29.70% |
Max Drawdown (1Y)Largest decline over 1 year | -7.62% | -3.42% | -4.20% |
Max Drawdown (3Y)Largest decline over 3 years | -18.49% | -5.11% | -13.38% |
Max Drawdown (5Y)Largest decline over 5 years | -42.95% | -16.44% | -26.51% |
Max Drawdown (10Y)Largest decline over 10 years | -48.31% | -18.61% | -29.70% |
Current DrawdownCurrent decline from peak | -40.36% | -3.73% | -36.63% |
Average DrawdownAverage peak-to-trough decline | -20.41% | -5.80% | -14.61% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.03% | 1.09% | +1.94% |
Volatility
IDTL.L vs. USTY.L - Volatility Comparison
iShares Treasury Bond 20+ UCITS (IDTL.L) has a higher volatility of 3.32% compared to SPDR Bloomberg US Treasury Bond UCITS ETF (USTY.L) at 1.73%. This indicates that IDTL.L's price experiences larger fluctuations and is considered to be riskier than USTY.L based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| IDTL.L | USTY.L | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 3.32% | 1.73% | +1.59% |
Volatility (6M)Calculated over the trailing 6-month period | 6.59% | 3.97% | +2.62% |
Volatility (1Y)Calculated over the trailing 1-year period | 9.89% | 5.33% | +4.56% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 14.99% | 7.13% | +7.86% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 14.61% | 6.86% | +7.75% |
IDTL.L vs. USTY.L - Expense Ratio Comparison
IDTL.L has a 0.07% expense ratio, which is higher than USTY.L's 0.05% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.
Dividends
IDTL.L vs. USTY.L - Dividend Comparison
IDTL.L's dividend yield for the trailing twelve months is around 4.36%, less than USTY.L's 4.87% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
IDTL.L iShares Treasury Bond 20+ UCITS | 4.36% | 4.31% | 4.65% | 3.79% | 3.01% | 1.74% | 1.76% | 2.49% | 2.79% | 2.60% | 2.63% | 2.14% |
USTY.L SPDR Bloomberg US Treasury Bond UCITS ETF | 4.87% | 4.61% | 3.81% | 2.81% | 1.57% | 1.31% | 2.49% | 2.79% | 2.11% | 2.11% | 1.66% | 0.00% |
Frequently Asked Questions
IDTL.L and USTY.L have a correlation of 0.54, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
On fees, USTY.L is cheaper at 0.05% per year. The better choice depends on whether you care most about return, fees, risk, or income.
USTY.L is cheaper with a 0.05% expense ratio, compared with 0.07% for IDTL.L.
IDTL.L tracks ICE U.S. Treasury 20+ Year Bond Index, while USTY.L tracks Bloomberg US Treasury Index. They also come from different issuers: iShares and State Street. Their fees differ too: 0.07% for IDTL.L and 0.05% for USTY.L.
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