MBBA vs. CMDY
MBBA (iShares Mortgage-Backed Securities Active ETF) and CMDY (iShares Bloomberg Roll Select Commodity Strategy ETF) are both exchange-traded funds - MBBA is a Mortgage Backed Securities fund actively managed by iShares, while CMDY is a Commodities fund tracking the Bloomberg Roll Select Commodity Total Return Index. MBBA is actively managed, while CMDY is passively managed. At a correlation of -0.38, they often move in opposite directions. MBBA charges 0.25%/yr vs 0.28%/yr for CMDY.
Performance
MBBA vs. CMDY - Performance Comparison
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Returns By Period
MBBA
- 1D
- 0.38%
- 1M
- 1.26%
- YTD
- —
- 6M
- —
- 1Y
- —
- 3Y*
- —
- 5Y*
- —
- 10Y*
- —
CMDY
- 1D
- -1.90%
- 1M
- -11.06%
- YTD
- 12.04%
- 6M
- 10.50%
- 1Y
- 21.81%
- 3Y*
- 10.68%
- 5Y*
- 8.63%
- 10Y*
- —
MBBA vs. CMDY - Yearly Performance Comparison
| 2026 (YTD) | |
|---|---|
MBBA iShares Mortgage-Backed Securities Active ETF | 1.27% |
CMDY iShares Bloomberg Roll Select Commodity Strategy ETF | 2.61% |
Correlation
The correlation between MBBA and CMDY is -0.38, meaning they tend to move in opposite directions. This is especially valuable for risk management - when one declines, the other has historically tended to hold steady or rise.
| Correlation | |
|---|---|
Correlation (All Time) Calculated using the full available price history since Jan 26, 2026 | -0.38 |
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Return for Risk
MBBA vs. CMDY — Risk / Return Rank
MBBA
Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.
CMDY
MBBA vs. CMDY - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares Mortgage-Backed Securities Active ETF (MBBA) and iShares Bloomberg Roll Select Commodity Strategy ETF (CMDY). 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.
| MBBA | CMDY | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | — | — | |
| Sortino ratioReturn per unit of downside risk | — | — | |
| Omega ratioGain probability vs. loss probability | — | 1.25 | — |
| Calmar ratioReturn relative to maximum drawdown | — | 1.54 | — |
| Martin ratioReturn relative to average drawdown | — | 6.83 | — |
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Drawdowns
MBBA vs. CMDY - Drawdown Comparison
The maximum MBBA drawdown since its inception was -2.83%, smaller than the maximum CMDY drawdown of -31.19%. Use the drawdown chart below to compare losses from any high point for MBBA and CMDY.
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Drawdown Indicators
| MBBA | CMDY | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -2.83% | -31.19% | +28.36% |
Max Drawdown (1Y)Largest decline over 1 year | — | -14.23% | — |
Max Drawdown (3Y)Largest decline over 3 years | — | -14.23% | — |
Max Drawdown (5Y)Largest decline over 5 years | — | -26.56% | — |
Current DrawdownCurrent decline from peak | -0.72% | -14.23% | +13.51% |
Average DrawdownAverage peak-to-trough decline | -1.12% | -13.11% | +11.99% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | — | 3.20% | — |
Volatility
MBBA vs. CMDY - Volatility Comparison
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Volatility by Period
| MBBA | CMDY | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | — | 3.90% | — |
Volatility (6M)Calculated over the trailing 6-month period | — | 14.58% | — |
Volatility (1Y)Calculated over the trailing 1-year period | 4.55% | 16.37% | -11.82% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 4.55% | 15.80% | -11.25% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 4.55% | 14.65% | -10.10% |
MBBA vs. CMDY - Expense Ratio Comparison
MBBA has a 0.25% expense ratio, which is lower than CMDY's 0.28% expense ratio.
Dividends
MBBA vs. CMDY - Dividend Comparison
MBBA's dividend yield for the trailing twelve months is around 1.83%, less than CMDY's 11.51% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 |
|---|---|---|---|---|---|---|---|---|---|
CMDY iShares Bloomberg Roll Select Commodity Strategy ETF | 11.51% | 12.89% | 4.23% | 5.10% | 3.98% | 16.09% | 0.15% | 2.21% | 1.73% |
MBBA iShares Mortgage-Backed Securities Active ETF | 1.83% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
Frequently Asked Questions
MBBA and CMDY have a correlation of -0.38, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
On fees, MBBA is cheaper at 0.25% per year. The better choice depends on whether you care most about return, fees, risk, or income.
MBBA is cheaper with a 0.25% expense ratio, compared with 0.28% for CMDY.
CMDY has the higher dividend yield at 11.51%, compared with 1.83% for MBBA.
MBBA is categorized as Mortgage Backed Securities, while CMDY is Commodities. Their fees differ too: 0.25% for MBBA and 0.28% for CMDY.
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