COMT vs. BCD
COMT (iShares GSCI Commodity Dynamic Roll Strategy ETF) and BCD (abrdn Bloomberg All Commodity Longer Dated Strategy K-1 Free ETF) are both Commodities funds. COMT is passively managed, while BCD is actively managed. Over the past 5 years, COMT returned 11.04%/yr vs 11.03%/yr for BCD. A 0.76 correlation means they provide meaningful diversification when combined. COMT charges 0.48%/yr vs 0.29%/yr for BCD.
Performance
COMT vs. BCD - 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 BCD's 12.69% 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%
BCD
- 1D
- -0.37%
- 1M
- -6.61%
- YTD
- 12.69%
- 6M
- 12.67%
- 1Y
- 18.46%
- 3Y*
- 11.12%
- 5Y*
- 11.03%
- 10Y*
- —
COMT vs. BCD - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
COMT iShares GSCI Commodity Dynamic Roll Strategy ETF | 25.05% | 6.07% | 5.96% | -6.56% | 19.45% | 36.88% | -18.66% | 10.81% | -6.67% | 14.39% |
BCD abrdn Bloomberg All Commodity Longer Dated Strategy K-1 Free ETF | 12.69% | 15.71% | 6.20% | -7.58% | 18.38% | 31.87% | 4.76% | 7.34% | -8.65% | 3.83% |
Correlation
The correlation between COMT and BCD is 0.79, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.79 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.79 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.81 |
Correlation (All Time) Calculated using the full available price history since Mar 31, 2017 | 0.76 |
The correlation between COMT and BCD has been stable across timeframes, ranging from 0.76 to 0.81 - a consistent structural relationship.
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Return for Risk
COMT vs. BCD — Risk / Return Rank
COMT
BCD
COMT vs. BCD - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares GSCI Commodity Dynamic Roll Strategy ETF (COMT) and abrdn Bloomberg All Commodity Longer Dated Strategy K-1 Free ETF (BCD). 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 | BCD | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.30 | ||
| Sortino ratioReturn per unit of downside risk | -0.33 | ||
| Omega ratioGain probability vs. loss probability | 1.19 | 1.24 | -0.05 |
| Calmar ratioReturn relative to maximum drawdown | 1.49 | 1.89 | -0.40 |
| Martin ratioReturn relative to average drawdown | 6.26 | 6.83 | -0.57 |
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Drawdowns
COMT vs. BCD - Drawdown Comparison
The maximum COMT drawdown since its inception was -51.89%, which is greater than BCD's maximum drawdown of -29.81%. Use the drawdown chart below to compare losses from any high point for COMT and BCD.
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Drawdown Indicators
| COMT | BCD | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -51.89% | -29.81% | -22.08% |
Max Drawdown (1Y)Largest decline over 1 year | -14.78% | -9.80% | -4.98% |
Max Drawdown (3Y)Largest decline over 3 years | -14.78% | -10.50% | -4.28% |
Max Drawdown (5Y)Largest decline over 5 years | -29.00% | -23.03% | -5.97% |
Max Drawdown (10Y)Largest decline over 10 years | -39.22% | — | — |
Current DrawdownCurrent decline from peak | -14.78% | -9.80% | -4.98% |
Average DrawdownAverage peak-to-trough decline | -24.01% | -9.84% | -14.17% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 4.16% | 3.00% | +1.16% |
Volatility
COMT vs. BCD - Volatility Comparison
iShares GSCI Commodity Dynamic Roll Strategy ETF (COMT) has a higher volatility of 5.01% compared to abrdn Bloomberg All Commodity Longer Dated Strategy K-1 Free ETF (BCD) at 3.18%. This indicates that COMT's price experiences larger fluctuations and is considered to be riskier than BCD based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| COMT | BCD | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 5.01% | 3.18% | +1.83% |
Volatility (6M)Calculated over the trailing 6-month period | 19.22% | 11.93% | +7.29% |
Volatility (1Y)Calculated over the trailing 1-year period | 21.47% | 13.95% | +7.52% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 21.12% | 15.37% | +5.75% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 18.89% | 13.90% | +4.99% |
COMT vs. BCD - Expense Ratio Comparison
COMT has a 0.48% expense ratio, which is higher than BCD's 0.29% expense ratio.
Dividends
COMT vs. BCD - Dividend Comparison
COMT's dividend yield for the trailing twelve months is around 6.19%, less than BCD's 15.27% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
BCD abrdn Bloomberg All Commodity Longer Dated Strategy K-1 Free ETF | 15.27% | 17.21% | 3.60% | 4.51% | 5.21% | 8.30% | 1.29% | 1.55% | 1.59% | 0.07% | 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 BCD have a correlation of 0.79, 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 BCD (3.18%). In terms of maximum drawdown, COMT dropped -51.89% vs BCD's -29.81%.
On 5-year performance, COMT leads with 11.04% vs 11.03% for BCD. On fees, BCD is cheaper at 0.29% per year. On volatility, BCD has been the lower-risk option at 3.18%. 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 11.03%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
BCD is cheaper with a 0.29% expense ratio, compared with 0.48% for COMT.
BCD has the higher dividend yield at 15.27%, compared with 6.19% for COMT.
They also come from different issuers: iShares and Aberdeen. Their fees differ too: 0.48% for COMT and 0.29% for BCD.
BCD 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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