IBDU vs. IBDS
IBDU (iShares iBonds Dec 2029 Term Corporate ETF) and IBDS (iShares iBonds Dec 2027 Term Corporate ETF) are both Corporate Bonds funds from iShares - IBDU tracks the Bloomberg December 2029 Maturity Corporate Index while IBDS tracks the Bloomberg Barclays December 2027 Maturity Corporate Index. Both are passively managed. Over the past 5 years, IBDU returned 1.29%/yr vs 1.45%/yr for IBDS. Their correlation of 0.85 suggests significant overlap in exposure. Both charge a 0.10% expense ratio.
Performance
IBDU vs. IBDS - Performance Comparison
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Returns By Period
In the year-to-date period, IBDU achieves a 0.54% return, which is significantly lower than IBDS's 1.23% return.
IBDU
- 1D
- -0.13%
- 1M
- 0.12%
- YTD
- 0.54%
- 6M
- 0.88%
- 1Y
- 4.76%
- 3Y*
- 5.73%
- 5Y*
- 1.29%
- 10Y*
- —
IBDS
- 1D
- -0.04%
- 1M
- 0.31%
- YTD
- 1.23%
- 6M
- 1.61%
- 1Y
- 4.57%
- 3Y*
- 5.28%
- 5Y*
- 1.45%
- 10Y*
- —
IBDU vs. IBDS - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | |
|---|---|---|---|---|---|---|---|---|
IBDU iShares iBonds Dec 2029 Term Corporate ETF | 0.54% | 7.59% | 3.62% | 8.67% | -13.04% | -2.05% | 10.38% | 2.22% |
IBDS iShares iBonds Dec 2027 Term Corporate ETF | 1.23% | 5.86% | 4.61% | 6.44% | -9.52% | -1.56% | 8.95% | 2.23% |
Correlation
The correlation between IBDU and IBDS is 0.81, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.81 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.88 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.88 |
Correlation (All Time) Calculated using the full available price history since Sep 20, 2019 | 0.85 |
The correlation between IBDU and IBDS has been stable across timeframes, ranging from 0.81 to 0.88 - a consistent structural relationship.
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Return for Risk
IBDU vs. IBDS — Risk / Return Rank
IBDU
IBDS
IBDU vs. IBDS - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares iBonds Dec 2029 Term Corporate ETF (IBDU) and iShares iBonds Dec 2027 Term Corporate ETF (IBDS). 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.
| IBDU | IBDS | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -2.07 | ||
| Sortino ratioReturn per unit of downside risk | -4.75 | ||
| Omega ratioGain probability vs. loss probability | 1.41 | 2.09 | -0.69 |
| Calmar ratioReturn relative to maximum drawdown | 3.02 | 10.55 | -7.54 |
| Martin ratioReturn relative to average drawdown | 11.33 | 48.73 | -37.40 |
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
| IBDU | IBDS | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 2.12 | 4.19 | -2.07 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.23 | 0.35 | -0.12 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.33 | 0.57 | -0.24 |
Drawdowns
IBDU vs. IBDS - Drawdown Comparison
The maximum IBDU drawdown since its inception was -19.44%, which is greater than IBDS's maximum drawdown of -16.75%. Use the drawdown chart below to compare losses from any high point for IBDU and IBDS.
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Drawdown Indicators
| IBDU | IBDS | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -19.44% | -16.75% | -2.69% |
Max Drawdown (1Y)Largest decline over 1 year | -1.59% | -0.43% | -1.16% |
Max Drawdown (3Y)Largest decline over 3 years | -4.14% | -2.27% | -1.87% |
Max Drawdown (5Y)Largest decline over 5 years | -19.44% | -14.98% | -4.46% |
Current DrawdownCurrent decline from peak | -0.54% | -0.06% | -0.48% |
Average DrawdownAverage peak-to-trough decline | -5.41% | -3.36% | -2.05% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.42% | 0.09% | +0.33% |
Volatility
IBDU vs. IBDS - Volatility Comparison
iShares iBonds Dec 2029 Term Corporate ETF (IBDU) has a higher volatility of 0.58% compared to iShares iBonds Dec 2027 Term Corporate ETF (IBDS) at 0.15%. This indicates that IBDU's price experiences larger fluctuations and is considered to be riskier than IBDS based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| IBDU | IBDS | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.58% | 0.15% | +0.43% |
Volatility (6M)Calculated over the trailing 6-month period | 1.49% | 0.64% | +0.85% |
Volatility (1Y)Calculated over the trailing 1-year period | 2.26% | 1.10% | +1.16% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 5.72% | 4.18% | +1.54% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 7.32% | 5.55% | +1.77% |
IBDU vs. IBDS - Expense Ratio Comparison
Both IBDU and IBDS have an expense ratio of 0.10%, making them cost-effective options compared to the broader market, where average expense ratios typically range from 0.3% to 0.9%.
Dividends
IBDU vs. IBDS - Dividend Comparison
IBDU's dividend yield for the trailing twelve months is around 4.66%, more than IBDS's 4.32% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 |
|---|---|---|---|---|---|---|---|---|---|---|
IBDS iShares iBonds Dec 2027 Term Corporate ETF | 4.32% | 4.36% | 4.37% | 3.81% | 2.87% | 2.19% | 2.66% | 3.32% | 3.66% | 0.97% |
IBDU iShares iBonds Dec 2029 Term Corporate ETF | 4.66% | 4.67% | 4.75% | 4.21% | 3.34% | 2.29% | 2.42% | 0.74% | 0.00% | 0.00% |
Frequently Asked Questions
IBDU and IBDS have a correlation of 0.81, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
IBDU has higher volatility (0.58%) compared to IBDS (0.15%). In terms of maximum drawdown, IBDU dropped -19.44% vs IBDS's -16.75%.
On 5-year performance, IBDS leads with 1.45% vs 1.29% for IBDU. Both ETFs have the same 0.10% expense ratio. On volatility, IBDS has been the lower-risk option at 0.15%. The better choice depends on whether you care most about return, fees, risk, or income.
Over the 5-year period, IBDS has performed better with a 1.45% return vs 1.29%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
IBDU and IBDS have the same expense ratio: 0.10% per year.
IBDU has the higher dividend yield at 4.66%, compared with 4.32% for IBDS.
IBDU tracks Bloomberg December 2029 Maturity Corporate Index, while IBDS tracks Bloomberg Barclays December 2027 Maturity Corporate Index.
IBDS currently has the higher Sharpe Ratio (4.19 vs 2.12), 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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