CMDY vs. IEMG

Last updated Jun 9, 2026

CMDY (iShares Bloomberg Roll Select Commodity Strategy ETF) and IEMG (iShares Core MSCI Emerging Markets ETF) are both exchange-traded funds - CMDY is a Commodities fund tracking the Bloomberg Roll Select Commodity Total Return Index, while IEMG is a Emerging Markets Diversified fund tracking the MSCI Emerging Markets Investable Market Index (USD) (Net). Both are passively managed. Over the past 5 years, CMDY returned 9.88%/yr vs 6.57%/yr for IEMG. At a 0.32 correlation, their price movements are largely independent. CMDY charges 0.28%/yr vs 0.09%/yr for IEMG.

Performance

CMDY vs. IEMG - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares Bloomberg Roll Select Commodity Strategy ETF (CMDY) and iShares Core MSCI Emerging Markets ETF (IEMG). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, CMDY achieves a 21.76% return, which is significantly higher than IEMG's 18.97% return.

CMDY

• 1D: 0.27%
• 1M: -3.10%
• YTD: 21.76%
• 6M: 21.83%
• 1Y: 31.65%
• 3Y*: 14.14%
• 5Y*: 9.88%
• 10Y*: —

IEMG

• 1D: 1.70%
• 1M: -3.66%
• YTD: 18.97%
• 6M: 20.80%
• 1Y: 40.80%
• 3Y*: 20.51%
• 5Y*: 6.57%
• 10Y*: 9.88%

*Multi-year figures are annualized to reflect compound growth (CAGR)

CMDY vs. IEMG - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018
CMDY iShares Bloomberg Roll Select Commodity Strategy ETF	21.76%	15.81%	5.43%	-9.33%	14.55%	26.38%	1.15%	4.96%	-11.11%
IEMG iShares Core MSCI Emerging Markets ETF	18.97%	32.56%	6.50%	11.52%	-19.98%	-0.64%	17.87%	17.81%	-16.65%

Correlation

The correlation between CMDY and IEMG is 0.03, 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	0.03
Correlation (3Y) Calculated over the trailing 3-year period	0.27
Correlation (5Y) Calculated over the trailing 5-year period	0.30
Correlation (All Time) Calculated using the full available price history since Apr 6, 2018	0.32

Over the past year, the correlation between CMDY and IEMG has dropped to 0.03 - well below their long-term average of 0.32, suggesting their price drivers have been diverging.

CMDY vs. IEMG - Sectors Allocation Comparison

Sectors	CMDY	IEMG
Communication Services	100.0%	6.4%
Basic Materials	-	6.9%
Consumer Cyclical	-	9.5%
Consumer Defensive	-	3.3%
Energy	-	3.8%
Financial Services	-	18.4%
Healthcare	-	3.7%
Industrials	-	9.0%
Real Estate	-	1.7%
Technology	-	35.0%
Utilities	-	2.2%

Return for Risk

CMDY vs. IEMG — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

CMDY

CMDY Risk / Return Rank: 69
CMDY Sharpe Ratio Rank: 66
CMDY Sortino Ratio Rank: 59
CMDY Omega Ratio Rank: 66
CMDY Calmar Ratio Rank: 84
CMDY Martin Ratio Rank: 71

IEMG

IEMG Risk / Return Rank: 67
IEMG Sharpe Ratio Rank: 67
IEMG Sortino Ratio Rank: 61
IEMG Omega Ratio Rank: 71
IEMG Calmar Ratio Rank: 68
IEMG Martin Ratio Rank: 69

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

CMDY vs. IEMG - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares Bloomberg Roll Select Commodity Strategy ETF (CMDY) and iShares Core MSCI Emerging Markets ETF (IEMG). 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.

	CMDY	IEMG	Difference
Sharpe ratio: Return per unit of total volatility	1.96	1.99	-0.04
Sortino ratio: Return per unit of downside risk	2.51	2.58	-0.07
Omega ratio: Gain probability vs. loss probability	1.35	1.38	-0.03
Calmar ratio: Return relative to maximum drawdown	4.11	3.10	+1.01
Martin ratio: Return relative to average drawdown	11.95	11.68	+0.26
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

CMDY vs. IEMG - Sharpe Ratio Comparison

The current CMDY Sharpe Ratio is 1.96, which is comparable to the IEMG Sharpe Ratio of 1.99. The chart below compares the historical Sharpe Ratios of CMDY and IEMG, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	CMDY	IEMG	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.96	1.99	-0.04
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.63	0.35	+0.27
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.49	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.53	0.33	+0.20

Drawdowns

CMDY vs. IEMG - Drawdown Comparison

The maximum CMDY drawdown since its inception was -31.19%, smaller than the maximum IEMG drawdown of -38.71%. Use the drawdown chart below to compare losses from any high point for CMDY and IEMG.

Drawdown Indicators

	CMDY	IEMG	Difference
Max Drawdown Largest peak-to-trough decline	-31.19%	-38.71%	+7.52%
Max Drawdown (1Y) Largest decline over 1 year	-7.73%	-13.21%	+5.48%
Max Drawdown (3Y) Largest decline over 3 years	-10.08%	-17.21%	+7.13%
Max Drawdown (5Y) Largest decline over 5 years	-26.56%	-35.75%	+9.19%
Max Drawdown (10Y) Largest decline over 10 years	—	-38.71%	—
Current Drawdown Current decline from peak	-6.78%	-7.00%	+0.22%
Average Drawdown Average peak-to-trough decline	-13.13%	-12.97%	-0.16%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.66%	3.50%	-0.84%

Volatility

CMDY vs. IEMG - Volatility Comparison

The current volatility for iShares Bloomberg Roll Select Commodity Strategy ETF (CMDY) is 5.12%, while iShares Core MSCI Emerging Markets ETF (IEMG) has a volatility of 10.33%. This indicates that CMDY experiences smaller price fluctuations and is considered to be less risky than IEMG based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	CMDY	IEMG	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.12%	10.33%	-5.21%
Volatility (6M) Calculated over the trailing 6-month period	14.45%	18.35%	-3.90%
Volatility (1Y) Calculated over the trailing 1-year period	16.28%	20.62%	-4.34%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	15.83%	18.62%	-2.79%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	14.65%	20.14%	-5.49%

CMDY vs. IEMG - Expense Ratio Comparison

CMDY has a 0.28% expense ratio, which is higher than IEMG's 0.09% expense ratio.

Dividends

CMDY vs. IEMG - Dividend Comparison

CMDY's dividend yield for the trailing twelve months is around 10.59%, more than IEMG's 2.31% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
CMDY iShares Bloomberg Roll Select Commodity Strategy ETF	10.59%	12.89%	4.23%	5.10%	3.98%	16.09%	0.15%	2.21%	1.73%	0.00%	0.00%	0.00%
IEMG iShares Core MSCI Emerging Markets ETF	2.31%	2.75%	3.20%	2.89%	2.71%	3.06%	1.87%	3.15%	2.76%	2.35%	2.28%	2.53%

Frequently Asked Questions

Can I hold both CMDY and IEMG in my portfolio?

CMDY and IEMG have a correlation of 0.03, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, CMDY or IEMG?

IEMG has higher volatility (10.33%) compared to CMDY (5.12%). In terms of maximum drawdown, CMDY dropped -31.19% vs IEMG's -38.71%.

Which ETF is better, CMDY or IEMG?

On 5-year performance, CMDY leads with 9.88% vs 6.57% for IEMG. On fees, IEMG is cheaper at 0.09% per year. On volatility, CMDY has been the lower-risk option at 5.12%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, CMDY or IEMG?

Over the 5-year period, CMDY has performed better with a 9.88% return vs 6.57%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, CMDY or IEMG?

IEMG is cheaper with a 0.09% expense ratio, compared with 0.28% for CMDY.

Which ETF pays a higher dividend yield, CMDY or IEMG?

CMDY has the higher dividend yield at 10.59%, compared with 2.31% for IEMG.

What is the main difference between CMDY and IEMG?

CMDY is categorized as Commodities, while IEMG is Emerging Markets Diversified. CMDY tracks Bloomberg Roll Select Commodity Total Return Index, while IEMG tracks MSCI Emerging Markets Investable Market Index (USD) (Net). Their fees differ too: 0.28% for CMDY and 0.09% for IEMG.

Which has better risk-adjusted returns?

IEMG currently has the higher Sharpe Ratio (1.99 vs 1.96), 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.