IDTL.L vs. BNDW
IDTL.L (iShares Treasury Bond 20+ UCITS) and BNDW (Vanguard Total World Bond ETF) are both exchange-traded funds - IDTL.L is a Government Bonds fund tracking the ICE U.S. Treasury 20+ Year Bond Index, while BNDW is a Global Bonds fund tracking the Bloomberg Global Aggregate Float Adjusted Composite Index. Both are passively managed. Over the past 5 years, IDTL.L returned -6.07%/yr vs 0.25%/yr for BNDW. A 0.70 correlation means they provide meaningful diversification when combined. IDTL.L charges 0.07%/yr vs 0.05%/yr for BNDW.
Performance
IDTL.L vs. BNDW - Performance Comparison
Loading charts...
Returns By Period
In the year-to-date period, IDTL.L achieves a -1.14% return, which is significantly lower than BNDW's 0.54% 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%
BNDW
- 1D
- 0.12%
- 1M
- 0.42%
- YTD
- 0.54%
- 6M
- 0.44%
- 1Y
- 3.25%
- 3Y*
- 4.07%
- 5Y*
- 0.25%
- 10Y*
- —
IDTL.L vs. BNDW - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | |
|---|---|---|---|---|---|---|---|---|---|
IDTL.L iShares Treasury Bond 20+ UCITS | -1.14% | 4.67% | -7.18% | 2.22% | -30.42% | -4.71% | 17.11% | 15.67% | 1.70% |
BNDW Vanguard Total World Bond ETF | 0.54% | 5.02% | 2.42% | 7.18% | -12.88% | -2.10% | 6.22% | 8.37% | 1.21% |
Correlation
The correlation between IDTL.L and BNDW is 0.68, 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 | 0.68 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.73 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.70 |
Correlation (All Time) Calculated using the full available price history since Sep 7, 2018 | 0.70 |
The correlation between IDTL.L and BNDW has been stable across timeframes, ranging from 0.68 to 0.73 - a consistent structural relationship.
Compare stocks, funds, or ETFs
Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.
Return for Risk
IDTL.L vs. BNDW — Risk / Return Rank
IDTL.L
BNDW
IDTL.L vs. BNDW - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares Treasury Bond 20+ UCITS (IDTL.L) and Vanguard Total World Bond ETF (BNDW). 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 | BNDW | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.59 | ||
| Sortino ratioReturn per unit of downside risk | -0.76 | ||
| Omega ratioGain probability vs. loss probability | 1.07 | 1.17 | -0.10 |
| Calmar ratioReturn relative to maximum drawdown | 0.50 | 1.21 | -0.71 |
| Martin ratioReturn relative to average drawdown | 1.27 | 3.42 | -2.14 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
Loading charts...
Sharpe Ratios by Period
| IDTL.L | BNDW | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.39 | 0.98 | -0.59 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | -0.40 | 0.05 | -0.45 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | -0.10 | — | — |
Sharpe Ratio (All Time)Calculated using the full available price history | -0.08 | 0.38 | -0.45 |
Drawdowns
IDTL.L vs. BNDW - Drawdown Comparison
The maximum IDTL.L drawdown since its inception was -48.31%, which is greater than BNDW's maximum drawdown of -17.22%. Use the drawdown chart below to compare losses from any high point for IDTL.L and BNDW.
Loading charts...
Drawdown Indicators
| IDTL.L | BNDW | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -48.31% | -17.22% | -31.09% |
Max Drawdown (1Y)Largest decline over 1 year | -7.62% | -2.70% | -4.92% |
Max Drawdown (3Y)Largest decline over 3 years | -18.49% | -4.27% | -14.22% |
Max Drawdown (5Y)Largest decline over 5 years | -42.95% | -16.93% | -26.02% |
Max Drawdown (10Y)Largest decline over 10 years | -48.31% | — | — |
Current DrawdownCurrent decline from peak | -40.36% | -1.42% | -38.94% |
Average DrawdownAverage peak-to-trough decline | -20.41% | -4.98% | -15.43% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 3.03% | 0.96% | +2.07% |
Volatility
IDTL.L vs. BNDW - Volatility Comparison
iShares Treasury Bond 20+ UCITS (IDTL.L) has a higher volatility of 3.32% compared to Vanguard Total World Bond ETF (BNDW) at 1.31%. This indicates that IDTL.L's price experiences larger fluctuations and is considered to be riskier than BNDW based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
Loading charts...
Volatility by Period
| IDTL.L | BNDW | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 3.32% | 1.31% | +2.01% |
Volatility (6M)Calculated over the trailing 6-month period | 6.59% | 2.63% | +3.96% |
Volatility (1Y)Calculated over the trailing 1-year period | 9.89% | 3.36% | +6.53% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 14.99% | 5.21% | +9.78% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 14.61% | 4.90% | +9.71% |
IDTL.L vs. BNDW - Expense Ratio Comparison
IDTL.L has a 0.07% expense ratio, which is higher than BNDW'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. BNDW - Dividend Comparison
IDTL.L's dividend yield for the trailing twelve months is around 4.36%, more than BNDW's 4.21% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
BNDW Vanguard Total World Bond ETF | 4.21% | 4.12% | 3.90% | 3.73% | 2.02% | 2.58% | 1.56% | 3.05% | 1.66% | 0.00% | 0.00% | 0.00% |
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% |
Frequently Asked Questions
IDTL.L and BNDW have a correlation of 0.68, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
On fees, BNDW is cheaper at 0.05% per year. The better choice depends on whether you care most about return, fees, risk, or income.
BNDW is cheaper with a 0.05% expense ratio, compared with 0.07% for IDTL.L.
IDTL.L is categorized as Government Bonds, while BNDW is Global Bonds. IDTL.L tracks ICE U.S. Treasury 20+ Year Bond Index, while BNDW tracks Bloomberg Global Aggregate Float Adjusted Composite Index. They also come from different issuers: iShares and Vanguard. Their fees differ too: 0.07% for IDTL.L and 0.05% for BNDW.
Find the right allocation for IDTL.L and BNDW
Add both to a portfolio and optimize allocations for your target — whether that's maximizing returns, minimizing drawdowns, or balancing risk across holdings.
Open Portfolio Optimizer