IGLT.L vs. VDTA.L
IGLT.L (iShares Core UK Gilts UCITS ETF) and VDTA.L (Vanguard USD Treasury Bond UCITS ETF Accumulating) are both Government Bonds funds - IGLT.L tracks the FTSE Actuaries UK Conventional Gilts All Stocks Index while VDTA.L tracks the Bloomberg Global Aggregate US Treasury Float Adjusted index. Both are passively managed. Over the past 5 years, IGLT.L returned -4.26%/yr vs 0.67%/yr for VDTA.L. At a 0.38 correlation, their price movements are largely independent. IGLT.L charges 0.07%/yr vs 0.05%/yr for VDTA.L.
Performance
IGLT.L vs. VDTA.L - Performance Comparison
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Different Trading Currencies
IGLT.L is traded in GBP, while VDTA.L is traded in USD. To make them comparable, the VDTA.L values have been converted to GBP using the latest available exchange rates.
Returns By Period
In the year-to-date period, IGLT.L achieves a -0.84% return, which is significantly lower than VDTA.L's 0.18% return.
IGLT.L
- 1D
- 0.21%
- 1M
- 1.42%
- YTD
- -0.84%
- 6M
- -1.14%
- 1Y
- 2.10%
- 3Y*
- 2.44%
- 5Y*
- -4.26%
- 10Y*
- -0.90%
VDTA.L
- 1D
- 0.21%
- 1M
- 1.08%
- YTD
- 0.18%
- 6M
- -0.59%
- 1Y
- 4.61%
- 3Y*
- 0.29%
- 5Y*
- 0.67%
- 10Y*
- —
IGLT.L vs. VDTA.L - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | |
|---|---|---|---|---|---|---|---|---|
IGLT.L iShares Core UK Gilts UCITS ETF | -0.84% | 4.69% | -3.33% | 3.56% | -23.71% | -5.03% | 8.08% | 5.29% |
VDTA.L Vanguard USD Treasury Bond UCITS ETF Accumulating | 0.18% | -1.32% | 2.70% | -1.47% | -1.95% | -1.41% | 4.48% | 4.81% |
Correlation
The correlation between IGLT.L and VDTA.L is 0.13, which is low. Their price movements are largely independent, making them effective diversification partners.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.13 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.34 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.34 |
Correlation (All Time) Calculated using the full available price history since Feb 22, 2019 | 0.38 |
Over the past year, the correlation between IGLT.L and VDTA.L has dropped to 0.13 - well below their long-term average of 0.38, suggesting their price drivers have been diverging.
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Return for Risk
IGLT.L vs. VDTA.L — Risk / Return Rank
IGLT.L
VDTA.L
IGLT.L vs. VDTA.L - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares Core UK Gilts UCITS ETF (IGLT.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.
| IGLT.L | VDTA.L | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.35 | ||
| Sortino ratioReturn per unit of downside risk | -0.53 | ||
| Omega ratioGain probability vs. loss probability | 1.06 | 1.13 | -0.06 |
| Calmar ratioReturn relative to maximum drawdown | 0.40 | 0.79 | -0.39 |
| Martin ratioReturn relative to average drawdown | 1.07 | 1.96 | -0.89 |
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
| IGLT.L | VDTA.L | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.35 | 0.70 | -0.35 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | -0.42 | 0.07 | -0.50 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | -0.10 | — | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.28 | 0.08 | +0.19 |
Drawdowns
IGLT.L vs. VDTA.L - Drawdown Comparison
The maximum IGLT.L drawdown since its inception was -35.52%, which is greater than VDTA.L's maximum drawdown of -22.99%. Use the drawdown chart below to compare losses from any high point for IGLT.L and VDTA.L.
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Drawdown Indicators
| IGLT.L | VDTA.L | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -35.52% | -22.99% | -12.53% |
Max Drawdown (1Y)Largest decline over 1 year | -5.24% | -5.83% | +0.59% |
Max Drawdown (3Y)Largest decline over 3 years | -6.97% | -8.53% | +1.56% |
Max Drawdown (5Y)Largest decline over 5 years | -33.49% | -16.79% | -16.70% |
Max Drawdown (10Y)Largest decline over 10 years | -35.52% | — | — |
Current DrawdownCurrent decline from peak | -25.96% | -17.88% | -8.08% |
Average DrawdownAverage peak-to-trough decline | -8.26% | -14.97% | +6.71% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.97% | 2.34% | -0.37% |
Volatility
IGLT.L vs. VDTA.L - Volatility Comparison
iShares Core UK Gilts UCITS ETF (IGLT.L) has a higher volatility of 2.31% compared to Vanguard USD Treasury Bond UCITS ETF Accumulating (VDTA.L) at 1.78%. This indicates that IGLT.L's price experiences larger fluctuations and is considered to be riskier 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
| IGLT.L | VDTA.L | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 2.31% | 1.78% | +0.53% |
Volatility (6M)Calculated over the trailing 6-month period | 4.73% | 5.10% | -0.37% |
Volatility (1Y)Calculated over the trailing 1-year period | 6.00% | 6.53% | -0.53% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 10.02% | 9.00% | +1.02% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 9.02% | 9.44% | -0.42% |
IGLT.L vs. VDTA.L - Expense Ratio Comparison
IGLT.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
IGLT.L vs. VDTA.L - Dividend Comparison
IGLT.L's dividend yield for the trailing twelve months is around 4.50%, while VDTA.L has not paid dividends to shareholders.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
IGLT.L iShares Core UK Gilts UCITS ETF | 4.50% | 4.26% | 3.69% | 2.40% | 1.32% | 0.79% | 0.95% | 1.25% | 1.31% | 1.30% | 1.88% | 2.05% |
VDTA.L Vanguard USD Treasury Bond UCITS ETF Accumulating | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
Frequently Asked Questions
IGLT.L and VDTA.L have a correlation of 0.13, 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 IGLT.L.
IGLT.L tracks FTSE Actuaries UK Conventional Gilts All Stocks 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 IGLT.L and 0.05% for VDTA.L.
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