CORB vs. IEO
CORB (AB Core Bond ETF) and IEO (iShares U.S. Oil & Gas Exploration & Production ETF) are both exchange-traded funds - CORB is a Intermediate Core Bond fund actively managed by AllianceBernstein, while IEO is a Energy Equities fund tracking the Dow Jones U.S. Select Oil Exploration & Production Index. CORB is actively managed, while IEO is passively managed. Their -0.41 correlation means they have often moved in opposite directions in the past. CORB charges 0.28%/yr vs 0.38%/yr for IEO.
Performance
CORB vs. IEO - Performance Comparison
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Returns By Period
In the year-to-date period, CORB achieves a -0.91% return, which is significantly lower than IEO's 42.54% return.
CORB
- 1D
- -0.27%
- 1M
- -1.29%
- 6M
- -1.03%
- YTD
- -0.91%
- 1Y
- —
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
- ALL TIME*
- —
IEO
- 1D
- 1.37%
- 1M
- 14.08%
- 6M
- 29.47%
- YTD
- 42.54%
- 1Y
- 47.44%
- 3Y*
- 12.66%
- 5Y*
- 23.53%
- 10Y*
- 11.48%
- ALL TIME*
- 6.22%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
CORB AB Core Bond ETF | $1.51M | $2.31M | $2.96M |
| $7.85M | $6.98M | $8.74M |
CORB vs. IEO - Yearly Performance Comparison
| 2026 (YTD) | 2025 | |
|---|---|---|
CORB AB Core Bond ETF | -0.91% | 0.41% |
IEO iShares U.S. Oil & Gas Exploration & Production ETF | 42.54% | -1.25% |
Correlation
The correlation between CORB and IEO is -0.41, meaning they have often moved in opposite directions in the past. This relationship can weaken or reverse as market conditions change.
| Correlation | |
|---|---|
Correlation (All Time) Calculated using the full available price history since Nov 10, 2025 | -0.41 |
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Return for Risk
CORB vs. IEO — Risk / Return Rank
CORB
Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.
IEO
CORB vs. IEO - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for AB Core Bond ETF (CORB) and iShares U.S. Oil & Gas Exploration & Production ETF (IEO). 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.
Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.
| CORB | IEO | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | — | — | |
| Sortino ratioReturn per unit of downside risk | — | — | |
| Omega ratioGain probability vs. loss probability | — | 1.27 | — |
| Calmar ratioReturn relative to maximum drawdown | — | 2.64 | — |
| Martin ratioReturn relative to average drawdown | — | 6.61 | — |
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Drawdowns
CORB vs. IEO - Drawdown Comparison
The maximum CORB drawdown since its inception was -3.08%, smaller than the maximum IEO drawdown of -79.17%. Use the drawdown chart below to compare losses from any high point for CORB and IEO.
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Drawdown Indicators
| CORB | IEO | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -3.08% | -79.17% | +76.09% |
Max Drawdown (1Y)Largest decline over 1 year | — | -16.32% | — |
Max Drawdown (3Y)Largest decline over 3 years | — | -31.46% | — |
Max Drawdown (5Y)Largest decline over 5 years | — | -31.46% | — |
Max Drawdown (10Y)Largest decline over 10 years | — | -75.00% | — |
Current DrawdownCurrent decline from peak | -2.69% | -1.83% | -0.86% |
Average DrawdownAverage peak-to-trough decline | -1.17% | -26.14% | +24.97% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | — | 6.54% | — |
Volatility
CORB vs. IEO - Volatility Comparison
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Volatility by Period
| CORB | IEO | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | — | 7.46% | — |
Volatility (6M)Calculated over the trailing 6-month period | — | 20.47% | — |
Volatility (1Y)Calculated over the trailing 1-year period | 4.05% | 25.90% | -21.85% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 4.05% | 30.27% | -26.22% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 4.05% | 34.91% | -30.86% |
CORB vs. IEO - Expense Ratio Comparison
CORB has a 0.28% expense ratio, which is lower than IEO's 0.38% expense ratio.
Dividends
CORB vs. IEO - Dividend Comparison
CORB's dividend yield for the trailing twelve months is around 2.77%, more than IEO's 1.85% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
CORB AB Core Bond ETF | 2.77% | 0.81% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
IEO iShares U.S. Oil & Gas Exploration & Production ETF | 1.85% | 2.61% | 2.63% | 3.00% | 3.77% | 2.62% | 3.17% | 1.85% | 1.67% | 0.94% | 0.98% | 2.03% |
Frequently Asked Questions
CORB and IEO have a correlation of -0.41, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
On fees, CORB is cheaper at 0.28% per year. The better choice depends on whether you care most about return, fees, risk, or income.
CORB is cheaper with a 0.28% expense ratio, compared with 0.38% for IEO.
CORB has the higher dividend yield at 2.77%, compared with 1.85% for IEO.
CORB is categorized as Intermediate Core Bond, while IEO is Energy Equities. They also come from different issuers: AllianceBernstein and iShares. Their fees differ too: 0.28% for CORB and 0.38% for IEO.
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