CPER vs. EMET
CPER (United States Copper Index Fund) and EMET (VanEck Copper and Green Metals ETF) are both Copper funds - CPER tracks the SummerHaven Copper Index Total Return while EMET tracks the MVIS Global Clean-Tech Metals Index. Both are passively managed. Over the past 3 years, CPER returned 17.80%/yr vs 13.48%/yr for EMET. Their 0.70 correlation means they have sometimes moved together and sometimes differently. CPER charges 1.06%/yr vs 0.61%/yr for EMET.
Performance
CPER vs. EMET - Performance Comparison
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Returns By Period
In the year-to-date period, CPER achieves a 13.16% return, which is significantly higher than EMET's 4.91% return.
CPER
- 1D
- 0.56%
- 1M
- 6.09%
- 6M
- 8.59%
- YTD
- 13.16%
- 1Y
- 43.49%
- 3Y*
- 17.80%
- 5Y*
- 7.64%
- 10Y*
- 10.57%
- ALL TIME*
- 3.14%
EMET
- 1D
- -0.78%
- 1M
- -2.10%
- 6M
- -9.46%
- YTD
- 4.91%
- 1Y
- 64.11%
- 3Y*
- 13.48%
- 5Y*
- —
- 10Y*
- —
- ALL TIME*
- 4.05%
Liquidity Comparison
| Position | Avg. Volume Value (2W) | Avg. Volume Value (1M) | Avg. Volume Value (3M) |
|---|---|---|---|
| $16.98M | $14.74M | $24.58M | |
| $206.80K | $212.67K | $453.71K |
CPER vs. EMET - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | |
|---|---|---|---|---|---|---|
CPER United States Copper Index Fund | 13.16% | 38.95% | 4.23% | 4.55% | -15.14% | 3.66% |
EMET VanEck Copper and Green Metals ETF | 4.91% | 81.22% | -12.81% | -12.28% | -17.15% | 0.11% |
Correlation
The correlation between CPER and EMET is 0.75, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.
| Correlation | |
|---|---|
Correlation (1Y) Focuses on recent behavior, but can change the most. | 0.75 |
Correlation (3Y) Balances recent behavior with more history. | 0.72 |
Correlation (All Time) Calculated using the full available price history since Nov 11, 2021 | 0.70 |
The correlation between CPER and EMET has been stable across timeframes, ranging from 0.70 to 0.75 - a consistent structural relationship.
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Return for Risk
CPER vs. EMET — Risk / Return Rank
CPER
EMET
CPER vs. EMET - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for United States Copper Index Fund (CPER) and VanEck Copper and Green Metals ETF (EMET). 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.
| CPER | EMET | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.07 | ||
| Sortino ratioReturn per unit of downside risk | +0.04 | ||
| Omega ratioGain probability vs. loss probability | 1.28 | 1.27 | +0.01 |
| Calmar ratioReturn relative to maximum drawdown | 2.70 | 2.53 | +0.17 |
| Martin ratioReturn relative to average drawdown | 8.40 | 6.21 | +2.20 |
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Drawdowns
CPER vs. EMET - Drawdown Comparison
The maximum CPER drawdown since its inception was -54.04%, roughly equal to the maximum EMET drawdown of -53.05%. Use the drawdown chart below to compare losses from any high point for CPER and EMET.
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Drawdown Indicators
| CPER | EMET | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -54.04% | -53.05% | -0.99% |
Max Drawdown (1Y)Largest decline over 1 year | -16.43% | -25.58% | +9.15% |
Max Drawdown (3Y)Largest decline over 3 years | -24.77% | -40.50% | +15.73% |
Max Drawdown (5Y)Largest decline over 5 years | -34.75% | — | — |
Max Drawdown (10Y)Largest decline over 10 years | -38.42% | — | — |
Current DrawdownCurrent decline from peak | -2.56% | -20.49% | +17.93% |
Average DrawdownAverage peak-to-trough decline | -25.19% | -24.56% | -0.63% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 5.26% | 10.39% | -5.13% |
Volatility
CPER vs. EMET - Volatility Comparison
The current volatility for United States Copper Index Fund (CPER) is 6.29%, while VanEck Copper and Green Metals ETF (EMET) has a volatility of 11.74%. This indicates that CPER experiences smaller price fluctuations and is considered to be less risky than EMET based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| CPER | EMET | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 6.29% | 11.74% | -5.45% |
Volatility (6M)Calculated over the trailing 6-month period | 21.59% | 33.95% | -12.36% |
Volatility (1Y)Calculated over the trailing 1-year period | 28.15% | 39.19% | -11.04% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 27.08% | 33.48% | -6.40% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 24.11% | 33.48% | -9.37% |
CPER vs. EMET - Expense Ratio Comparison
CPER has a 1.06% expense ratio, which is higher than EMET's 0.61% expense ratio.
Dividends
CPER vs. EMET - Dividend Comparison
CPER has not paid dividends to shareholders, while EMET's dividend yield for the trailing twelve months is around 1.76%.
| 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 | 1.76% | 1.84% | 1.89% | 2.02% | 2.56% |
Frequently Asked Questions
CPER and EMET have a correlation of 0.75, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
EMET has higher volatility (11.74%) compared to CPER (6.29%). In terms of maximum drawdown, CPER dropped -54.04% vs EMET's -53.05%.
On 3-year performance, CPER leads with 17.80% vs 13.48% for EMET. On fees, EMET is cheaper at 0.61% per year. On volatility, CPER has been the lower-risk option at 6.29%. The better choice depends on whether you care most about return, fees, risk, or income.
Over the 3-year period, CPER has performed better with a 17.80% return vs 13.48%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
EMET is cheaper with a 0.61% expense ratio, compared with 1.06% for CPER.
EMET has the higher dividend yield at 1.76%, compared with 0.00% for CPER.
CPER tracks SummerHaven Copper Index Total Return, while EMET tracks MVIS Global Clean-Tech Metals Index. They also come from different issuers: USCF and VanEck. Their fees differ too: 1.06% for CPER and 0.61% for EMET.
EMET currently has the higher Sharpe Ratio (1.65 vs 1.58), 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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