IBTA.L vs. VDTA.L
IBTA.L (iShares USD Treasury Bond 1-3yr UCITS ETF (Acc)) and VDTA.L (Vanguard USD Treasury Bond UCITS ETF Accumulating) are both Government Bonds funds - IBTA.L tracks the ICE US Treasury 1-3 Year Index while VDTA.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 -0.41%/yr for VDTA.L. A 0.68 correlation means they provide meaningful diversification when combined. IBTA.L charges 0.07%/yr vs 0.05%/yr for VDTA.L.
Performance
IBTA.L vs. VDTA.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 VDTA.L's -0.23% return.
IBTA.L
- 1D
- 0.13%
- 1M
- 0.13%
- YTD
- 0.46%
- 6M
- 0.92%
- 1Y
- 3.43%
- 3Y*
- 4.23%
- 5Y*
- 1.87%
- 10Y*
- —
VDTA.L
- 1D
- 0.21%
- 1M
- 0.17%
- YTD
- -0.23%
- 6M
- 0.10%
- 1Y
- 3.61%
- 3Y*
- 2.87%
- 5Y*
- -0.41%
- 10Y*
- —
IBTA.L vs. VDTA.L - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | |
|---|---|---|---|---|---|---|---|---|
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% | 3.23% |
VDTA.L Vanguard USD Treasury Bond UCITS ETF Accumulating | -0.23% | 6.25% | 0.93% | 3.71% | -12.37% | -2.33% | 7.64% | 6.63% |
Correlation
The correlation between IBTA.L and VDTA.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 Feb 22, 2019 | 0.68 |
The correlation between IBTA.L and VDTA.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. VDTA.L — Risk / Return Rank
IBTA.L
VDTA.L
IBTA.L vs. VDTA.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 Accumulating (VDTA.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 | VDTA.L | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +1.78 | ||
| Sortino ratioReturn per unit of downside risk | +3.10 | ||
| Omega ratioGain probability vs. loss probability | 1.59 | 1.18 | +0.41 |
| Calmar ratioReturn relative to maximum drawdown | 4.62 | 1.23 | +3.38 |
| Martin ratioReturn relative to average drawdown | 17.47 | 3.80 | +13.66 |
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 | VDTA.L | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 2.80 | 1.02 | +1.78 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.93 | -0.07 | +1.01 |
Sharpe Ratio (All Time)Calculated using the full available price history | 1.08 | 0.22 | +0.86 |
Drawdowns
IBTA.L vs. VDTA.L - Drawdown Comparison
The maximum IBTA.L drawdown since its inception was -5.80%, smaller than the maximum VDTA.L drawdown of -18.82%. Use the drawdown chart below to compare losses from any high point for IBTA.L and VDTA.L.
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Drawdown Indicators
| IBTA.L | VDTA.L | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -5.80% | -18.82% | +13.02% |
Max Drawdown (1Y)Largest decline over 1 year | -0.74% | -2.90% | +2.16% |
Max Drawdown (3Y)Largest decline over 3 years | -0.89% | -5.15% | +4.26% |
Max Drawdown (5Y)Largest decline over 5 years | -5.70% | -16.41% | +10.71% |
Current DrawdownCurrent decline from peak | -0.13% | -6.97% | +6.84% |
Average DrawdownAverage peak-to-trough decline | -0.97% | -8.11% | +7.14% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.20% | 0.94% | -0.74% |
Volatility
IBTA.L vs. VDTA.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 Accumulating (VDTA.L) has a volatility of 1.37%. This indicates that IBTA.L experiences smaller price fluctuations and is considered to be less risky than VDTA.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 | VDTA.L | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.43% | 1.37% | -0.94% |
Volatility (6M)Calculated over the trailing 6-month period | 0.86% | 2.55% | -1.69% |
Volatility (1Y)Calculated over the trailing 1-year period | 1.23% | 3.51% | -2.28% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 2.00% | 5.57% | -3.57% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 1.76% | 5.35% | -3.59% |
IBTA.L vs. VDTA.L - Expense Ratio Comparison
IBTA.L has a 0.07% expense ratio, which is higher than VDTA.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. VDTA.L - Dividend Comparison
Neither IBTA.L nor VDTA.L has paid dividends to shareholders.
Frequently Asked Questions
IBTA.L and VDTA.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, VDTA.L is cheaper at 0.05% per year. The better choice depends on whether you care most about return, fees, risk, or income.
VDTA.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 VDTA.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 VDTA.L.
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