LDUR vs. ISTB
LDUR (PIMCO Enhanced Low Duration Active ETF) and ISTB (iShares Core 1-5 Year USD Bond ETF) are both Short-Term Bond funds. LDUR is actively managed, while ISTB is passively managed. Over the past 10 years, LDUR returned 2.43%/yr vs 2.27%/yr for ISTB. At a 0.44 correlation, their price movements are largely independent. LDUR charges 0.54%/yr vs 0.06%/yr for ISTB.
Performance
LDUR vs. ISTB - Performance Comparison
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Returns By Period
In the year-to-date period, LDUR achieves a 0.91% return, which is significantly higher than ISTB's 0.49% return. Over the past 10 years, LDUR has outperformed ISTB with an annualized return of 2.43%, while ISTB has yielded a comparatively lower 2.27% annualized return.
LDUR
- 1D
- -0.02%
- 1M
- 0.15%
- YTD
- 0.91%
- 6M
- 1.29%
- 1Y
- 4.37%
- 3Y*
- 5.11%
- 5Y*
- 2.23%
- 10Y*
- 2.43%
ISTB
- 1D
- -0.08%
- 1M
- 0.15%
- YTD
- 0.49%
- 6M
- 0.71%
- 1Y
- 4.19%
- 3Y*
- 4.95%
- 5Y*
- 1.85%
- 10Y*
- 2.27%
LDUR vs. ISTB - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
LDUR PIMCO Enhanced Low Duration Active ETF | 0.91% | 5.76% | 5.14% | 4.78% | -4.23% | -0.55% | 4.49% | 4.27% | 1.05% | 2.06% |
ISTB iShares Core 1-5 Year USD Bond ETF | 0.49% | 6.36% | 4.37% | 5.56% | -6.08% | -0.71% | 4.75% | 5.61% | 1.02% | 1.72% |
Correlation
The correlation between LDUR and ISTB 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 | 0.72 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.67 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.51 |
Correlation (All Time) Calculated using the full available price history since Jan 24, 2014 | 0.44 |
Over the past year, LDUR and ISTB have become more correlated (0.76) than their long-term average of 0.44, meaning their price movements have been converging.
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Return for Risk
LDUR vs. ISTB — Risk / Return Rank
LDUR
ISTB
LDUR vs. ISTB - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for PIMCO Enhanced Low Duration Active ETF (LDUR) and iShares Core 1-5 Year USD Bond ETF (ISTB). 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.
| LDUR | ISTB | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.46 | ||
| Sortino ratioReturn per unit of downside risk | +0.62 | ||
| Omega ratioGain probability vs. loss probability | 1.56 | 1.46 | +0.10 |
| Calmar ratioReturn relative to maximum drawdown | 4.70 | 3.34 | +1.36 |
| Martin ratioReturn relative to average drawdown | 22.64 | 12.72 | +9.92 |
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
| LDUR | ISTB | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 2.83 | 2.37 | +0.46 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 1.10 | 0.67 | +0.43 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.88 | 0.91 | -0.03 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.87 | 0.84 | +0.03 |
Drawdowns
LDUR vs. ISTB - Drawdown Comparison
The maximum LDUR drawdown since its inception was -8.68%, smaller than the maximum ISTB drawdown of -9.34%. Use the drawdown chart below to compare losses from any high point for LDUR and ISTB.
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Drawdown Indicators
| LDUR | ISTB | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -8.68% | -9.34% | +0.66% |
Max Drawdown (1Y)Largest decline over 1 year | -0.93% | -1.26% | +0.33% |
Max Drawdown (3Y)Largest decline over 3 years | -1.17% | -1.36% | +0.19% |
Max Drawdown (5Y)Largest decline over 5 years | -6.75% | -9.34% | +2.59% |
Max Drawdown (10Y)Largest decline over 10 years | -8.68% | -9.34% | +0.66% |
Current DrawdownCurrent decline from peak | -0.04% | -0.42% | +0.38% |
Average DrawdownAverage peak-to-trough decline | -0.85% | -1.22% | +0.37% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.19% | 0.33% | -0.14% |
Volatility
LDUR vs. ISTB - Volatility Comparison
The current volatility for PIMCO Enhanced Low Duration Active ETF (LDUR) is 0.44%, while iShares Core 1-5 Year USD Bond ETF (ISTB) has a volatility of 0.54%. This indicates that LDUR experiences smaller price fluctuations and is considered to be less risky than ISTB based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| LDUR | ISTB | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.44% | 0.54% | -0.10% |
Volatility (6M)Calculated over the trailing 6-month period | 1.08% | 1.28% | -0.20% |
Volatility (1Y)Calculated over the trailing 1-year period | 1.55% | 1.77% | -0.22% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 2.03% | 2.79% | -0.76% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 2.77% | 2.51% | +0.26% |
LDUR vs. ISTB - Expense Ratio Comparison
LDUR has a 0.54% expense ratio, which is higher than ISTB's 0.06% expense ratio.
Dividends
LDUR vs. ISTB - Dividend Comparison
LDUR's dividend yield for the trailing twelve months is around 4.35%, more than ISTB's 4.25% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
ISTB iShares Core 1-5 Year USD Bond ETF | 4.25% | 4.12% | 3.83% | 2.97% | 2.01% | 1.69% | 2.20% | 2.75% | 2.57% | 2.06% | 1.90% | 1.58% |
LDUR PIMCO Enhanced Low Duration Active ETF | 4.35% | 4.60% | 4.77% | 4.11% | 2.22% | 0.90% | 2.15% | 3.14% | 2.66% | 2.08% | 1.85% | 2.92% |
Frequently Asked Questions
LDUR and ISTB 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.
ISTB has higher volatility (0.54%) compared to LDUR (0.44%). In terms of maximum drawdown, LDUR dropped -8.68% vs ISTB's -9.34%.
On 10-year performance, LDUR leads with 2.43% vs 2.27% for ISTB. On fees, ISTB is cheaper at 0.06% per year. On volatility, LDUR has been the lower-risk option at 0.44%. The better choice depends on whether you care most about return, fees, risk, or income.
Over the 10-year period, LDUR has performed better with a 2.43% return vs 2.27%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
ISTB is cheaper with a 0.06% expense ratio, compared with 0.54% for LDUR.
LDUR has the higher dividend yield at 4.35%, compared with 4.25% for ISTB.
They also come from different issuers: PIMCO and iShares. Their fees differ too: 0.54% for LDUR and 0.06% for ISTB.
LDUR currently has the higher Sharpe Ratio (2.83 vs 2.37), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.
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