EMET vs. CPER

Last updated Jun 24, 2026

EMET (VanEck Copper and Green Metals ETF) and CPER (United States Copper Index Fund) are both Copper funds - EMET tracks the MVIS Global Clean-Tech Metals Index while CPER tracks the SummerHaven Copper Index Total Return. Both are passively managed. Over the past 3 years, EMET returned 18.09%/yr vs 16.60%/yr for CPER. A 0.70 correlation means they provide meaningful diversification when combined. EMET charges 0.61%/yr vs 1.06%/yr for CPER.

Performance

EMET vs. CPER - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in VanEck Copper and Green Metals ETF (EMET) and United States Copper Index Fund (CPER). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, EMET achieves a 11.62% return, which is significantly higher than CPER's 6.75% return.

EMET

• 1D: -5.73%
• 1M: -5.77%
• YTD: 11.62%
• 6M: 11.02%
• 1Y: 87.54%
• 3Y*: 18.09%
• 5Y*: —
• 10Y*: —

CPER

• 1D: -3.84%
• 1M: -4.11%
• YTD: 6.75%
• 6M: 9.28%
• 1Y: 21.76%
• 3Y*: 16.60%
• 5Y*: 7.10%
• 10Y*: 10.37%

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

EMET vs. CPER - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
EMET VanEck Copper and Green Metals ETF	11.62%	81.22%	-12.81%	-12.28%	-17.15%	0.11%
CPER United States Copper Index Fund	6.75%	38.95%	4.23%	4.55%	-15.14%	3.66%

Correlation

The correlation between EMET and CPER is 0.74, 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	0.74
Correlation (3Y) Calculated over the trailing 3-year period	0.72
Correlation (All Time) Calculated using the full available price history since Nov 11, 2021	0.70

The correlation between EMET and CPER has been stable across timeframes, ranging from 0.70 to 0.74 - a consistent structural relationship.

Return for Risk

EMET vs. CPER — Risk / Return Rank

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

EMET

EMET Risk / Return Rank: 69
EMET Sharpe Ratio Rank: 78
EMET Sortino Ratio Rank: 62
EMET Omega Ratio Rank: 65
EMET Calmar Ratio Rank: 73
EMET Martin Ratio Rank: 66

CPER

CPER Risk / Return Rank: 20
CPER Sharpe Ratio Rank: 19
CPER Sortino Ratio Rank: 18
CPER Omega Ratio Rank: 23
CPER Calmar Ratio Rank: 20
CPER Martin Ratio Rank: 17

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.

EMET vs. CPER - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for VanEck Copper and Green Metals ETF (EMET) and United States Copper Index Fund (CPER). 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.

	EMET	CPER	Difference
Sharpe ratio: Return per unit of total volatility	2.30	0.62	+1.68
Sortino ratio: Return per unit of downside risk	2.67	0.97	+1.70
Omega ratio: Gain probability vs. loss probability	1.36	1.16	+0.20
Calmar ratio: Return relative to maximum drawdown	3.44	0.88	+2.56
Martin ratio: Return relative to average drawdown	11.10	1.82	+9.28

EMET vs. CPER - Sharpe Ratio Comparison

The current EMET Sharpe Ratio is 2.30, which is higher than the CPER Sharpe Ratio of 0.62. The chart below compares the historical Sharpe Ratios of EMET and CPER, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

EMET vs. CPER - Drawdown Comparison

The maximum EMET drawdown since its inception was -53.05%, roughly equal to the maximum CPER drawdown of -54.04%. Use the drawdown chart below to compare losses from any high point for EMET and CPER.

Drawdown Indicators

	EMET	CPER	Difference
Max Drawdown Largest peak-to-trough decline	-53.05%	-54.04%	+0.99%
Max Drawdown (1Y) Largest decline over 1 year	-25.58%	-24.77%	-0.81%
Max Drawdown (3Y) Largest decline over 3 years	-40.50%	-24.77%	-15.73%
Max Drawdown (5Y) Largest decline over 5 years	—	-34.75%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-38.42%	—
Current Drawdown Current decline from peak	-15.40%	-8.08%	-7.32%
Average Drawdown Average peak-to-trough decline	-24.65%	-25.32%	+0.67%
Ulcer Index Depth and duration of drawdowns from previous peaks	7.91%	11.97%	-4.06%

Volatility

EMET vs. CPER - Volatility Comparison

VanEck Copper and Green Metals ETF (EMET) has a higher volatility of 15.63% compared to United States Copper Index Fund (CPER) at 9.34%. This indicates that EMET's price experiences larger fluctuations and is considered to be riskier than CPER based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	EMET	CPER	Difference
Volatility (1M) Calculated over the trailing 1-month period	15.63%	9.34%	+6.29%
Volatility (6M) Calculated over the trailing 6-month period	33.60%	23.62%	+9.98%
Volatility (1Y) Calculated over the trailing 1-year period	38.24%	35.07%	+3.17%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	33.37%	27.06%	+6.31%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	33.37%	24.11%	+9.26%

EMET vs. CPER - Expense Ratio Comparison

EMET has a 0.61% expense ratio, which is lower than CPER's 1.06% expense ratio.

Dividends

EMET vs. CPER - Dividend Comparison

EMET's dividend yield for the trailing twelve months is around 1.65%, while CPER has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022
CPER United States Copper Index Fund	0.00%	0.00%	0.00%	0.00%	0.00%
EMET VanEck Copper and Green Metals ETF	1.65%	1.84%	1.89%	2.02%	2.56%

Frequently Asked Questions

Can I hold both EMET and CPER in my portfolio?

EMET and CPER have a correlation of 0.74, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, EMET or CPER?

EMET has higher volatility (15.63%) compared to CPER (9.34%). In terms of maximum drawdown, EMET dropped -53.05% vs CPER's -54.04%.

Which ETF is better, EMET or CPER?

On 3-year performance, EMET leads with 18.09% vs 16.60% for CPER. On fees, EMET is cheaper at 0.61% per year. On volatility, CPER has been the lower-risk option at 9.34%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, EMET or CPER?

Over the 3-year period, EMET has performed better with a 18.09% return vs 16.60%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, EMET or CPER?

EMET is cheaper with a 0.61% expense ratio, compared with 1.06% for CPER.

Which ETF pays a higher dividend yield, EMET or CPER?

EMET has the higher dividend yield at 1.65%, compared with 0.00% for CPER.

What is the main difference between EMET and CPER?

EMET tracks MVIS Global Clean-Tech Metals Index, while CPER tracks SummerHaven Copper Index Total Return. They also come from different issuers: VanEck and USCF. Their fees differ too: 0.61% for EMET and 1.06% for CPER.

Which has better risk-adjusted returns?

EMET currently has the higher Sharpe Ratio (2.30 vs 0.62), 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.