COMT vs. SBLK
COMT (iShares GSCI Commodity Dynamic Roll Strategy ETF) is Commodities fund tracking the S&P GSCI Dynamic Roll (USD) Total Return Index, while SBLK (Star Bulk Carriers Corp.) is a stock. Over the past 10 years, COMT returned 7.87%/yr vs 29.24%/yr for SBLK. At a 0.28 correlation, their price movements are largely independent.
Performance
COMT vs. SBLK - Performance Comparison
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Returns By Period
In the year-to-date period, COMT achieves a 26.00% return, which is significantly lower than SBLK's 41.89% return. Over the past 10 years, COMT has underperformed SBLK with an annualized return of 7.87%, while SBLK has yielded a comparatively higher 29.24% annualized return.
COMT
- 1D
- -0.17%
- 1M
- -4.70%
- 6M
- 23.49%
- YTD
- 26.00%
- 1Y
- 27.75%
- 3Y*
- 11.57%
- 5Y*
- 11.09%
- 10Y*
- 7.87%
SBLK
- 1D
- 1.82%
- 1M
- -1.13%
- 6M
- 38.85%
- YTD
- 41.89%
- 1Y
- 48.44%
- 3Y*
- 23.17%
- 5Y*
- 17.99%
- 10Y*
- 29.24%
COMT vs. SBLK - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
COMT iShares GSCI Commodity Dynamic Roll Strategy ETF | 26.00% | 6.07% | 5.96% | -6.56% | 19.45% | 36.88% | -18.66% | 10.81% | -6.67% | 11.70% |
SBLK Star Bulk Carriers Corp. | 41.89% | 30.76% | -21.04% | 19.24% | 8.50% | 185.15% | -24.77% | 29.82% | -18.83% | 120.35% |
Correlation
The correlation between COMT and SBLK is 0.06, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.06 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.15 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.22 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.26 |
Correlation (All Time) Calculated using the full available price history since Oct 16, 2014 | 0.28 |
Over the past year, the correlation between COMT and SBLK has dropped to 0.06 - well below their long-term average of 0.28, suggesting their price drivers have been diverging.
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Return for Risk
COMT vs. SBLK — Risk / Return Rank
COMT
SBLK
COMT vs. SBLK - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares GSCI Commodity Dynamic Roll Strategy ETF (COMT) and Star Bulk Carriers Corp. (SBLK). 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 | SBLK | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.39 | ||
| Sortino ratioReturn per unit of downside risk | -0.42 | ||
| Omega ratioGain probability vs. loss probability | 1.24 | 1.28 | -0.04 |
| Calmar ratioReturn relative to maximum drawdown | 1.66 | 3.02 | -1.36 |
| Martin ratioReturn relative to average drawdown | 5.78 | 8.05 | -2.26 |
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Drawdowns
COMT vs. SBLK - Drawdown Comparison
The maximum COMT drawdown since its inception was -51.89%, smaller than the maximum SBLK drawdown of -99.76%. Use the drawdown chart below to compare losses from any high point for COMT and SBLK.
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Drawdown Indicators
| COMT | SBLK | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -51.89% | -99.76% | +47.87% |
Max Drawdown (1Y)Largest decline over 1 year | -17.57% | -17.49% | -0.08% |
Max Drawdown (3Y)Largest decline over 3 years | -17.57% | -48.44% | +30.87% |
Max Drawdown (5Y)Largest decline over 5 years | -29.00% | -48.44% | +19.44% |
Max Drawdown (10Y)Largest decline over 10 years | -39.22% | -73.77% | +34.55% |
Current DrawdownCurrent decline from peak | -14.13% | -93.60% | +79.47% |
Average DrawdownAverage peak-to-trough decline | -23.97% | -82.73% | +58.76% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 5.05% | 6.55% | -1.50% |
Volatility
COMT vs. SBLK - Volatility Comparison
The current volatility for iShares GSCI Commodity Dynamic Roll Strategy ETF (COMT) is 5.68%, while Star Bulk Carriers Corp. (SBLK) has a volatility of 10.44%. This indicates that COMT experiences smaller price fluctuations and is considered to be less risky than SBLK based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| COMT | SBLK | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 5.68% | 10.44% | -4.76% |
Volatility (6M)Calculated over the trailing 6-month period | 19.60% | 23.70% | -4.10% |
Volatility (1Y)Calculated over the trailing 1-year period | 21.45% | 30.33% | -8.88% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 21.17% | 42.70% | -21.53% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 18.84% | 52.07% | -33.23% |
Dividends
COMT vs. SBLK - Dividend Comparison
COMT's dividend yield for the trailing twelve months is around 6.14%, more than SBLK's 3.91% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
COMT iShares GSCI Commodity Dynamic Roll Strategy ETF | 6.14% | 7.74% | 4.90% | 5.19% | 29.79% | 17.79% | 0.36% | 2.61% | 11.65% | 5.16% | 0.52% | 1.44% |
SBLK Star Bulk Carriers Corp. | 3.91% | 1.56% | 16.72% | 7.38% | 33.80% | 9.93% | 0.57% | 0.42% | 0.00% | 0.00% | 0.00% | 0.00% |
Frequently Asked Questions
COMT and SBLK have a correlation of 0.06, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
SBLK has higher volatility (10.44%) compared to COMT (5.68%). In terms of maximum drawdown, COMT dropped -51.89% vs SBLK's -99.76%.
SBLK currently has the higher Sharpe Ratio (1.75 vs 1.36), 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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