IBTS.L vs. VDTY.L
IBTS.L (iShares $ Treasury Bond 1-3yr UCITS ETF) and VDTY.L (Vanguard USD Treasury Bond UCITS ETF) are both Government Bonds funds - IBTS.L tracks the ICE U.S. Treasury 1-3 Year Bond Index while VDTY.L tracks the Bloomberg Global Aggregate US Treasury Float Adjusted Index. Both are passively managed. Over the past 10 years, IBTS.L returned 2.54%/yr vs 1.71%/yr for VDTY.L. A 0.74 correlation means they provide meaningful diversification when combined. IBTS.L charges 0.07%/yr vs 0.05%/yr for VDTY.L.
Performance
IBTS.L vs. VDTY.L - Performance Comparison
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Different Trading Currencies
IBTS.L is traded in GBP, while VDTY.L is traded in USD. To make them comparable, the VDTY.L values have been converted to GBP using the latest available exchange rates.
Returns By Period
In the year-to-date period, IBTS.L achieves a 0.51% return, which is significantly higher than VDTY.L's -0.10% return. Over the past 10 years, IBTS.L has outperformed VDTY.L with an annualized return of 2.54%, while VDTY.L has yielded a comparatively lower 1.71% annualized return.
IBTS.L
- 1D
- 0.19%
- 1M
- 1.36%
- YTD
- 0.51%
- 6M
- 0.07%
- 1Y
- 4.08%
- 3Y*
- 1.62%
- 5Y*
- 2.92%
- 10Y*
- 2.54%
VDTY.L
- 1D
- 0.01%
- 1M
- 0.82%
- YTD
- -0.10%
- 6M
- -0.92%
- 1Y
- 4.19%
- 3Y*
- 0.27%
- 5Y*
- 0.66%
- 10Y*
- 1.71%
IBTS.L vs. VDTY.L - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
IBTS.L iShares $ Treasury Bond 1-3yr UCITS ETF | 0.51% | -1.91% | 5.79% | -1.41% | 7.61% | 0.64% | -0.34% | 0.37% | 7.21% | -8.60% |
VDTY.L Vanguard USD Treasury Bond UCITS ETF | -0.10% | -1.31% | 2.87% | -1.42% | -1.90% | -1.48% | 4.52% | 3.00% | 6.78% | -6.53% |
Correlation
The correlation between IBTS.L and VDTY.L is 0.66, 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 | 0.66 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.65 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.67 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.74 |
Correlation (All Time) Calculated using the full available price history since Feb 26, 2016 | 0.74 |
The correlation between IBTS.L and VDTY.L has been stable across timeframes, ranging from 0.65 to 0.74 - a consistent structural relationship.
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Return for Risk
IBTS.L vs. VDTY.L — Risk / Return Rank
IBTS.L
VDTY.L
IBTS.L vs. VDTY.L - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares $ Treasury Bond 1-3yr UCITS ETF (IBTS.L) and Vanguard USD Treasury Bond UCITS ETF (VDTY.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.
| IBTS.L | VDTY.L | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.01 | ||
| Sortino ratioReturn per unit of downside risk | -0.01 | ||
| Omega ratioGain probability vs. loss probability | 1.12 | 1.12 | -0.01 |
| Calmar ratioReturn relative to maximum drawdown | 0.90 | 0.77 | +0.13 |
| Martin ratioReturn relative to average drawdown | 2.29 | 1.91 | +0.38 |
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
| IBTS.L | VDTY.L | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.67 | 0.68 | -0.01 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.36 | 0.07 | +0.29 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.27 | 0.17 | +0.11 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.35 | 0.13 | +0.23 |
Drawdowns
IBTS.L vs. VDTY.L - Drawdown Comparison
The maximum IBTS.L drawdown since its inception was -19.02%, smaller than the maximum VDTY.L drawdown of -22.88%. Use the drawdown chart below to compare losses from any high point for IBTS.L and VDTY.L.
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Drawdown Indicators
| IBTS.L | VDTY.L | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -19.02% | -22.88% | +3.86% |
Max Drawdown (1Y)Largest decline over 1 year | -4.51% | -5.74% | +1.23% |
Max Drawdown (3Y)Largest decline over 3 years | -8.89% | -8.56% | -0.33% |
Max Drawdown (5Y)Largest decline over 5 years | -16.28% | -16.81% | +0.53% |
Max Drawdown (10Y)Largest decline over 10 years | -19.02% | -22.88% | +3.86% |
Current DrawdownCurrent decline from peak | -7.64% | -17.78% | +10.14% |
Average DrawdownAverage peak-to-trough decline | -7.93% | -12.78% | +4.85% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.77% | 2.31% | -0.54% |
Volatility
IBTS.L vs. VDTY.L - Volatility Comparison
The current volatility for iShares $ Treasury Bond 1-3yr UCITS ETF (IBTS.L) is 1.69%, while Vanguard USD Treasury Bond UCITS ETF (VDTY.L) has a volatility of 1.88%. This indicates that IBTS.L experiences smaller price fluctuations and is considered to be less risky than VDTY.L based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| IBTS.L | VDTY.L | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.69% | 1.88% | -0.19% |
Volatility (6M)Calculated over the trailing 6-month period | 4.49% | 5.12% | -0.63% |
Volatility (1Y)Calculated over the trailing 1-year period | 6.10% | 6.50% | -0.40% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 8.09% | 9.00% | -0.91% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 9.24% | 10.19% | -0.95% |
IBTS.L vs. VDTY.L - Expense Ratio Comparison
IBTS.L has a 0.07% expense ratio, which is higher than VDTY.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
IBTS.L vs. VDTY.L - Dividend Comparison
IBTS.L's dividend yield for the trailing twelve months is around 4.00%, less than VDTY.L's 4.26% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
IBTS.L iShares $ Treasury Bond 1-3yr UCITS ETF | 4.00% | 4.22% | 4.12% | 3.08% | 0.75% | 0.61% | 1.84% | 2.39% | 1.49% | 1.01% | 0.67% | 0.49% |
VDTY.L Vanguard USD Treasury Bond UCITS ETF | 4.26% | 4.29% | 4.31% | 3.40% | 2.09% | 1.21% | 1.54% | 2.34% | 2.33% | 1.57% | 0.99% | 0.00% |
Frequently Asked Questions
IBTS.L and VDTY.L have a correlation of 0.66, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
On fees, VDTY.L is cheaper at 0.05% per year. The better choice depends on whether you care most about return, fees, risk, or income.
VDTY.L is cheaper with a 0.05% expense ratio, compared with 0.07% for IBTS.L.
IBTS.L tracks ICE U.S. Treasury 1-3 Year Bond Index, while VDTY.L tracks Bloomberg Global Aggregate US Treasury Float Adjusted Index. They also come from different issuers: iShares and Vanguard. Their fees differ too: 0.07% for IBTS.L and 0.05% for VDTY.L.
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