IBDY vs. SPBO
IBDY (iShares iBonds Dec 2033 Term Corporate ETF) and SPBO (SPDR Portfolio Corporate Bond ETF) are both Corporate Bonds funds - IBDY tracks the Bloomberg December 2033 Maturity Corporate Index while SPBO tracks the Bloomberg Barclays U.S. Corporate Bond Index. Both are passively managed. Over the past year, IBDY returned 5.45% vs 5.51% for SPBO. With a 0.96 correlation, they move nearly in lockstep. IBDY charges 0.10%/yr vs 0.03%/yr for SPBO.
Performance
IBDY vs. SPBO - Performance Comparison
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Returns By Period
In the year-to-date period, IBDY achieves a -0.23% return, which is significantly lower than SPBO's 0.31% return.
IBDY
- 1D
- -0.49%
- 1M
- -0.73%
- YTD
- -0.23%
- 6M
- 0.14%
- 1Y
- 5.45%
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
SPBO
- 1D
- -0.55%
- 1M
- -0.42%
- YTD
- 0.31%
- 6M
- 0.36%
- 1Y
- 5.51%
- 3Y*
- 5.43%
- 5Y*
- 0.58%
- 10Y*
- 2.71%
IBDY vs. SPBO - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | |
|---|---|---|---|---|
IBDY iShares iBonds Dec 2033 Term Corporate ETF | -0.23% | 9.41% | 2.02% | 5.75% |
SPBO SPDR Portfolio Corporate Bond ETF | 0.31% | 7.83% | 2.59% | 5.16% |
Correlation
The correlation between IBDY and SPBO is 0.96 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.96 |
Correlation (All Time) Calculated using the full available price history since Jun 26, 2023 | 0.96 |
The correlation between IBDY and SPBO has been stable across timeframes, ranging from 0.96 to 0.96 - a consistent structural relationship.
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Return for Risk
IBDY vs. SPBO — Risk / Return Rank
IBDY
SPBO
IBDY vs. SPBO - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares iBonds Dec 2033 Term Corporate ETF (IBDY) and SPDR Portfolio Corporate Bond ETF (SPBO). 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.
| IBDY | SPBO | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.04 | ||
| Sortino ratioReturn per unit of downside risk | +0.11 | ||
| Omega ratioGain probability vs. loss probability | 1.23 | 1.22 | +0.01 |
| Calmar ratioReturn relative to maximum drawdown | 1.93 | 1.93 | 0.00 |
| Martin ratioReturn relative to average drawdown | 6.14 | 6.07 | +0.07 |
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
| IBDY | SPBO | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.31 | 1.27 | +0.04 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | — | 0.08 | — |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | — | 0.36 | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.90 | 0.47 | +0.43 |
Drawdowns
IBDY vs. SPBO - Drawdown Comparison
The maximum IBDY drawdown since its inception was -7.53%, smaller than the maximum SPBO drawdown of -22.23%. Use the drawdown chart below to compare losses from any high point for IBDY and SPBO.
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Drawdown Indicators
| IBDY | SPBO | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -7.53% | -22.23% | +14.70% |
Max Drawdown (1Y)Largest decline over 1 year | -2.84% | -2.87% | +0.03% |
Max Drawdown (3Y)Largest decline over 3 years | — | -6.41% | — |
Max Drawdown (5Y)Largest decline over 5 years | — | -22.23% | — |
Max Drawdown (10Y)Largest decline over 10 years | — | -22.23% | — |
Current DrawdownCurrent decline from peak | -1.76% | -1.28% | -0.48% |
Average DrawdownAverage peak-to-trough decline | -1.57% | -4.04% | +2.47% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.89% | 0.91% | -0.02% |
Volatility
IBDY vs. SPBO - Volatility Comparison
iShares iBonds Dec 2033 Term Corporate ETF (IBDY) and SPDR Portfolio Corporate Bond ETF (SPBO) have volatilities of 1.33% and 1.38%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| IBDY | SPBO | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.33% | 1.38% | -0.05% |
Volatility (6M)Calculated over the trailing 6-month period | 3.04% | 3.25% | -0.21% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.18% | 4.36% | -0.18% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 6.35% | 7.18% | -0.83% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 6.35% | 7.49% | -1.14% |
IBDY vs. SPBO - Expense Ratio Comparison
IBDY has a 0.10% expense ratio, which is higher than SPBO's 0.03% 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
IBDY vs. SPBO - Dividend Comparison
IBDY's dividend yield for the trailing twelve months is around 4.91%, less than SPBO's 5.14% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
IBDY iShares iBonds Dec 2033 Term Corporate ETF | 4.91% | 4.87% | 5.02% | 2.20% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
SPBO SPDR Portfolio Corporate Bond ETF | 5.14% | 5.09% | 5.28% | 4.73% | 3.54% | 2.42% | 2.75% | 3.46% | 3.60% | 3.15% | 3.35% | 3.07% |
Frequently Asked Questions
With a correlation of 0.96, IBDY and SPBO move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.
SPBO has higher volatility (1.38%) compared to IBDY (1.33%). In terms of maximum drawdown, IBDY dropped -7.53% vs SPBO's -22.23%.
On 1-year performance, SPBO leads with 5.51% vs 5.45% for IBDY. On fees, SPBO is cheaper at 0.03% per year. Their volatility is very similar. The better choice depends on whether you care most about return, fees, risk, or income.
Over the 1-year period, SPBO has performed better with a 5.51% return vs 5.45%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
SPBO is cheaper with a 0.03% expense ratio, compared with 0.10% for IBDY.
SPBO has the higher dividend yield at 5.14%, compared with 4.91% for IBDY.
IBDY tracks Bloomberg December 2033 Maturity Corporate Index, while SPBO tracks Bloomberg Barclays U.S. Corporate Bond Index. They also come from different issuers: iShares and State Street. Their fees differ too: 0.10% for IBDY and 0.03% for SPBO.
IBDY currently has the higher Sharpe Ratio (1.31 vs 1.27), 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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