IBTA.L vs. VDTY.L
IBTA.L (iShares USD Treasury Bond 1-3yr UCITS ETF (Acc)) and VDTY.L (Vanguard USD Treasury Bond UCITS ETF) are both Government Bonds funds - IBTA.L tracks the ICE US Treasury 1-3 Year Index while VDTY.L tracks the Bloomberg Global Aggregate US Treasury Float Adjusted Index. Both are passively managed. Over the past 5 years, IBTA.L returned 1.87%/yr vs -0.36%/yr for VDTY.L. A 0.68 correlation means they provide meaningful diversification when combined. IBTA.L charges 0.07%/yr vs 0.05%/yr for VDTY.L.
Performance
IBTA.L vs. VDTY.L - Performance Comparison
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Returns By Period
In the year-to-date period, IBTA.L achieves a 0.46% return, which is significantly higher than VDTY.L's -0.23% return.
IBTA.L
- 1D
- 0.13%
- 1M
- -0.00%
- YTD
- 0.46%
- 6M
- 0.97%
- 1Y
- 3.46%
- 3Y*
- 4.23%
- 5Y*
- 1.87%
- 10Y*
- —
VDTY.L
- 1D
- 0.24%
- 1M
- -0.23%
- YTD
- -0.23%
- 6M
- 0.28%
- 1Y
- 3.52%
- 3Y*
- 2.95%
- 5Y*
- -0.36%
- 10Y*
- 0.95%
IBTA.L vs. VDTY.L - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
IBTA.L iShares USD Treasury Bond 1-3yr UCITS ETF (Acc) | 0.46% | 5.30% | 4.11% | 4.15% | -3.75% | -0.64% | 3.14% | 3.58% | 1.44% | -0.05% |
VDTY.L Vanguard USD Treasury Bond UCITS ETF | -0.23% | 6.26% | 1.10% | 3.77% | -12.32% | -2.40% | 7.68% | 7.08% | 0.80% | 0.65% |
Correlation
The correlation between IBTA.L and VDTY.L is 0.76, 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 | 0.76 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.76 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.75 |
Correlation (All Time) Calculated using the full available price history since Apr 18, 2017 | 0.68 |
The correlation between IBTA.L and VDTY.L has been stable across timeframes, ranging from 0.68 to 0.76 - a consistent structural relationship.
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Return for Risk
IBTA.L vs. VDTY.L — Risk / Return Rank
IBTA.L
VDTY.L
IBTA.L vs. VDTY.L - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares USD Treasury Bond 1-3yr UCITS ETF (Acc) (IBTA.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.
| IBTA.L | VDTY.L | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +1.83 | ||
| Sortino ratioReturn per unit of downside risk | +3.13 | ||
| Omega ratioGain probability vs. loss probability | 1.59 | 1.17 | +0.42 |
| Calmar ratioReturn relative to maximum drawdown | 4.62 | 1.16 | +3.46 |
| Martin ratioReturn relative to average drawdown | 17.47 | 3.67 | +13.80 |
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
| IBTA.L | VDTY.L | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 2.80 | 0.97 | +1.83 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.93 | -0.07 | +1.00 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | — | 0.20 | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 1.08 | 0.20 | +0.89 |
Drawdowns
IBTA.L vs. VDTY.L - Drawdown Comparison
The maximum IBTA.L drawdown since its inception was -5.80%, smaller than the maximum VDTY.L drawdown of -18.99%. Use the drawdown chart below to compare losses from any high point for IBTA.L and VDTY.L.
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Drawdown Indicators
| IBTA.L | VDTY.L | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -5.80% | -18.99% | +13.19% |
Max Drawdown (1Y)Largest decline over 1 year | -0.74% | -2.97% | +2.23% |
Max Drawdown (3Y)Largest decline over 3 years | -0.89% | -5.35% | +4.46% |
Max Drawdown (5Y)Largest decline over 5 years | -5.70% | -16.60% | +10.90% |
Max Drawdown (10Y)Largest decline over 10 years | — | -18.99% | — |
Current DrawdownCurrent decline from peak | -0.13% | -6.76% | +6.63% |
Average DrawdownAverage peak-to-trough decline | -0.97% | -6.62% | +5.65% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.20% | 0.94% | -0.74% |
Volatility
IBTA.L vs. VDTY.L - Volatility Comparison
The current volatility for iShares USD Treasury Bond 1-3yr UCITS ETF (Acc) (IBTA.L) is 0.43%, while Vanguard USD Treasury Bond UCITS ETF (VDTY.L) has a volatility of 1.42%. This indicates that IBTA.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
| IBTA.L | VDTY.L | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.43% | 1.42% | -0.99% |
Volatility (6M)Calculated over the trailing 6-month period | 0.86% | 2.50% | -1.64% |
Volatility (1Y)Calculated over the trailing 1-year period | 1.23% | 3.58% | -2.35% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 2.00% | 5.54% | -3.54% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 1.76% | 4.86% | -3.10% |
IBTA.L vs. VDTY.L - Expense Ratio Comparison
IBTA.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
IBTA.L vs. VDTY.L - Dividend Comparison
IBTA.L has not paid dividends to shareholders, while VDTY.L's dividend yield for the trailing twelve months is around 4.25%.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 |
|---|---|---|---|---|---|---|---|---|---|---|---|
IBTA.L iShares USD Treasury Bond 1-3yr UCITS ETF (Acc) | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
VDTY.L Vanguard USD Treasury Bond UCITS ETF | 4.25% | 4.29% | 4.31% | 3.40% | 2.09% | 1.21% | 1.54% | 2.34% | 2.33% | 1.57% | 0.99% |
Frequently Asked Questions
IBTA.L and VDTY.L have a correlation of 0.76, 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 IBTA.L.
IBTA.L tracks ICE US Treasury 1-3 Year 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 IBTA.L and 0.05% for VDTY.L.
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