COMT vs. CMDY
COMT (iShares GSCI Commodity Dynamic Roll Strategy ETF) and CMDY (iShares Bloomberg Roll Select Commodity Strategy ETF) are both Commodities funds from iShares - COMT tracks the S&P GSCI Dynamic Roll (USD) Total Return Index while CMDY tracks the Bloomberg Roll Select Commodity Total Return Index. Both are passively managed. Over the past 5 years, COMT returned 11.04%/yr vs 9.37%/yr for CMDY. A 0.79 correlation means they provide meaningful diversification when combined. COMT charges 0.48%/yr vs 0.28%/yr for CMDY.
Performance
COMT vs. CMDY - Performance Comparison
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Returns By Period
In the year-to-date period, COMT achieves a 25.05% return, which is significantly higher than CMDY's 15.88% return.
COMT
- 1D
- -0.76%
- 1M
- -11.08%
- YTD
- 25.05%
- 6M
- 25.05%
- 1Y
- 21.95%
- 3Y*
- 12.36%
- 5Y*
- 11.04%
- 10Y*
- 8.06%
CMDY
- 1D
- -0.65%
- 1M
- -8.01%
- YTD
- 15.88%
- 6M
- 15.95%
- 1Y
- 21.57%
- 3Y*
- 11.93%
- 5Y*
- 9.37%
- 10Y*
- —
COMT vs. CMDY - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | |
|---|---|---|---|---|---|---|---|---|---|
COMT iShares GSCI Commodity Dynamic Roll Strategy ETF | 25.05% | 6.07% | 5.96% | -6.56% | 19.45% | 36.88% | -18.66% | 10.81% | -7.40% |
CMDY iShares Bloomberg Roll Select Commodity Strategy ETF | 15.88% | 15.81% | 5.43% | -9.33% | 14.55% | 26.38% | 1.15% | 4.96% | -11.13% |
Correlation
The correlation between COMT and CMDY is 0.87, 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 | 0.87 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.84 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.83 |
Correlation (All Time) Calculated using the full available price history since Apr 5, 2018 | 0.79 |
The correlation between COMT and CMDY has been stable across timeframes, ranging from 0.79 to 0.87 - a consistent structural relationship.
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Return for Risk
COMT vs. CMDY — Risk / Return Rank
COMT
CMDY
COMT vs. CMDY - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares GSCI Commodity Dynamic Roll Strategy ETF (COMT) 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.
| COMT | CMDY | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.30 | ||
| Sortino ratioReturn per unit of downside risk | -0.30 | ||
| Omega ratioGain probability vs. loss probability | 1.19 | 1.24 | -0.05 |
| Calmar ratioReturn relative to maximum drawdown | 1.49 | 1.92 | -0.43 |
| Martin ratioReturn relative to average drawdown | 6.26 | 7.24 | -0.98 |
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Drawdowns
COMT vs. CMDY - Drawdown Comparison
The maximum COMT drawdown since its inception was -51.89%, which is greater than CMDY's maximum drawdown of -31.19%. Use the drawdown chart below to compare losses from any high point for COMT and CMDY.
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Drawdown Indicators
| COMT | CMDY | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -51.89% | -31.19% | -20.70% |
Max Drawdown (1Y)Largest decline over 1 year | -14.78% | -11.29% | -3.49% |
Max Drawdown (3Y)Largest decline over 3 years | -14.78% | -11.29% | -3.49% |
Max Drawdown (5Y)Largest decline over 5 years | -29.00% | -26.56% | -2.44% |
Max Drawdown (10Y)Largest decline over 10 years | -39.22% | — | — |
Current DrawdownCurrent decline from peak | -14.78% | -11.29% | -3.49% |
Average DrawdownAverage peak-to-trough decline | -24.01% | -13.11% | -10.90% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 4.16% | 3.21% | +0.95% |
Volatility
COMT vs. CMDY - Volatility Comparison
iShares GSCI Commodity Dynamic Roll Strategy ETF (COMT) has a higher volatility of 5.01% compared to iShares Bloomberg Roll Select Commodity Strategy ETF (CMDY) at 3.50%. This indicates that COMT's price experiences larger fluctuations and is considered to be riskier than CMDY based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| COMT | CMDY | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 5.01% | 3.50% | +1.51% |
Volatility (6M)Calculated over the trailing 6-month period | 19.22% | 14.39% | +4.83% |
Volatility (1Y)Calculated over the trailing 1-year period | 21.47% | 16.32% | +5.15% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 21.12% | 15.76% | +5.36% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 18.89% | 14.63% | +4.26% |
COMT vs. CMDY - Expense Ratio Comparison
COMT has a 0.48% expense ratio, which is higher than CMDY's 0.28% expense ratio.
Dividends
COMT vs. CMDY - Dividend Comparison
COMT's dividend yield for the trailing twelve months is around 6.19%, less than CMDY's 11.13% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
CMDY iShares Bloomberg Roll Select Commodity Strategy ETF | 11.13% | 12.89% | 4.23% | 5.10% | 3.98% | 16.09% | 0.15% | 2.21% | 1.73% | 0.00% | 0.00% | 0.00% |
COMT iShares GSCI Commodity Dynamic Roll Strategy ETF | 6.19% | 7.74% | 4.90% | 5.19% | 29.79% | 17.79% | 0.36% | 2.61% | 11.65% | 5.16% | 0.52% | 1.44% |
Frequently Asked Questions
COMT and CMDY have a correlation of 0.87, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
COMT has higher volatility (5.01%) compared to CMDY (3.50%). In terms of maximum drawdown, COMT dropped -51.89% vs CMDY's -31.19%.
On 5-year performance, COMT leads with 11.04% vs 9.37% for CMDY. On fees, CMDY is cheaper at 0.28% per year. On volatility, CMDY has been the lower-risk option at 3.50%. The better choice depends on whether you care most about return, fees, risk, or income.
Over the 5-year period, COMT has performed better with a 11.04% return vs 9.37%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
CMDY is cheaper with a 0.28% expense ratio, compared with 0.48% for COMT.
CMDY has the higher dividend yield at 11.13%, compared with 6.19% for COMT.
COMT tracks S&P GSCI Dynamic Roll (USD) Total Return Index, while CMDY tracks Bloomberg Roll Select Commodity Total Return Index. Their fees differ too: 0.48% for COMT and 0.28% for CMDY.
CMDY currently has the higher Sharpe Ratio (1.33 vs 1.03), 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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