COPX vs. CPER

Last updated Apr 1, 2026

Compare and contrast key facts about Global X Copper Miners ETF (COPX) and United States Copper Index Fund (CPER).

COPX and CPER are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. COPX is a passively managed fund by Global X that tracks the performance of the Solactive Global Copper Miners Index. It was launched on Apr 19, 2010. CPER is a passively managed fund by Concierge Technologies that tracks the performance of the SummerHaven Copper Index Total Return. It was launched on Nov 15, 2011. Both COPX and CPER are passive ETFs, meaning that they are not actively managed but aim to replicate the performance of the underlying index as closely as possible.

Performance

COPX vs. CPER - Performance Comparison

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

COPX vs. CPER - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
COPX Global X Copper Miners ETF	6.35%	93.50%	3.57%	8.38%	-0.76%	23.39%	51.66%	12.48%	-31.31%	38.92%
CPER United States Copper Index Fund	-1.52%	38.95%	4.23%	4.55%	-15.14%	25.21%	23.90%	6.66%	-21.91%	28.80%

Returns By Period

In the year-to-date period, COPX achieves a 6.35% return, which is significantly higher than CPER's -1.52% return. Over the past 10 years, COPX has outperformed CPER with an annualized return of 20.82%, while CPER has yielded a comparatively lower 9.10% annualized return.

COPX

• 1D: 7.92%
• 1M: -20.22%
• YTD: 6.35%
• 6M: 30.65%
• 1Y: 101.10%
• 3Y*: 28.34%
• 5Y*: 18.72%
• 10Y*: 20.82%

CPER

• 1D: 2.50%
• 1M: -6.64%
• YTD: -1.52%
• 6M: 14.77%
• 1Y: 8.96%
• 3Y*: 11.35%
• 5Y*: 6.82%
• 10Y*: 9.10%

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

COPX vs. CPER - Expense Ratio Comparison

COPX has a 0.65% expense ratio, which is lower than CPER's 0.80% expense ratio.

CPER

United States Copper Index Fund

COPX

Global X Copper Miners ETF

Return for Risk

COPX vs. CPER — Risk / Return Rank

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

COPX

COPX Risk / Return Rank: 94
COPX Sharpe Ratio Rank: 96
COPX Sortino Ratio Rank: 93
COPX Omega Ratio Rank: 91
COPX Calmar Ratio Rank: 94
COPX Martin Ratio Rank: 94

CPER

CPER Risk / Return Rank: 21
CPER Sharpe Ratio Rank: 20
CPER Sortino Ratio Rank: 22
CPER Omega Ratio Rank: 25
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.

COPX vs. CPER - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Global X Copper Miners ETF (COPX) 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.

	COPX	CPER	Difference
Sharpe ratio Return per unit of total volatility	2.41	0.24	+2.17
Sortino ratio Return per unit of downside risk	2.75	0.54	+2.21
Omega ratio Gain probability vs. loss probability	1.38	1.09	+0.29
Calmar ratio Return relative to maximum drawdown	3.46	0.31	+3.15
Martin ratio Return relative to average drawdown	13.40	0.64	+12.76
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

COPX vs. CPER - Sharpe Ratio Comparison

The current COPX Sharpe Ratio is 2.41, which is higher than the CPER Sharpe Ratio of 0.24. The chart below compares the historical Sharpe Ratios of COPX and CPER, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	COPX	CPER	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.41	0.24	+2.17
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.52	0.26	+0.27
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.59	0.38	+0.21
Sharpe Ratio (All Time) Calculated using the full available price history	0.16	0.09	+0.07

Correlation

The correlation between COPX and CPER is 0.63, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.

Dividends

COPX vs. CPER - Dividend Comparison

COPX's dividend yield for the trailing twelve months is around 2.52%, while CPER has not paid dividends to shareholders.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
COPX Global X Copper Miners ETF	2.52%	2.68%	1.80%	2.39%	3.14%	1.48%	1.30%	1.37%	2.59%	1.57%	0.60%	1.20%
CPER United States Copper Index Fund	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Drawdowns

COPX vs. CPER - Drawdown Comparison

The maximum COPX drawdown since its inception was -83.16%, which is greater than CPER's maximum drawdown of -54.04%. Use the drawdown chart below to compare losses from any high point for COPX and CPER.

Drawdown Indicators

	COPX	CPER	Difference
Max Drawdown Largest peak-to-trough decline	-83.16%	-54.04%	-29.12%
Max Drawdown (1Y) Largest decline over 1 year	-27.82%	-24.77%	-3.05%
Max Drawdown (5Y) Largest decline over 5 years	-42.12%	-34.75%	-7.37%
Max Drawdown (10Y) Largest decline over 10 years	-65.41%	-38.42%	-26.99%
Current Drawdown Current decline from peak	-20.22%	-11.06%	-9.16%
Average Drawdown Average peak-to-trough decline	-39.60%	-25.65%	-13.95%
Ulcer Index Depth and duration of drawdowns from previous peaks	7.20%	12.19%	-4.99%

Volatility

COPX vs. CPER - Volatility Comparison

Global X Copper Miners ETF (COPX) has a higher volatility of 18.96% compared to United States Copper Index Fund (CPER) at 9.29%. This indicates that COPX'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

	COPX	CPER	Difference
Volatility (1M) Calculated over the trailing 1-month period	18.96%	9.29%	+9.67%
Volatility (6M) Calculated over the trailing 6-month period	33.75%	21.96%	+11.79%
Volatility (1Y) Calculated over the trailing 1-year period	42.22%	36.84%	+5.38%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	36.05%	26.85%	+9.20%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	35.51%	23.87%	+11.64%