ERO vs. CPER

Last updated Apr 1, 2026

Compare and contrast key facts about Ero Copper Corp (ERO) and United States Copper Index Fund (CPER).

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.

Performance

ERO vs. CPER - Performance Comparison

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

ERO vs. CPER - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
ERO Ero Copper Corp	-5.73%	109.87%	-14.63%	14.84%	-10.07%	-5.73%	-10.97%	151.68%	21.41%	52.24%
CPER United States Copper Index Fund	-1.52%	38.95%	4.23%	4.55%	-15.14%	25.21%	23.90%	6.66%	-21.91%	3.23%

Returns By Period

In the year-to-date period, ERO achieves a -5.73% return, which is significantly lower than CPER's -1.52% return.

ERO

• 1D: 6.98%
• 1M: -21.97%
• YTD: -5.73%
• 6M: 31.83%
• 1Y: 120.05%
• 3Y*: 14.77%
• 5Y*: 8.86%
• 10Y*: —

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)

Return for Risk

ERO vs. CPER — Risk / Return Rank

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

ERO

ERO Risk / Return Rank: 87
ERO Sharpe Ratio Rank: 92
ERO Sortino Ratio Rank: 86
ERO Omega Ratio Rank: 85
ERO Calmar Ratio Rank: 87
ERO Martin Ratio Rank: 87

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.

ERO vs. CPER - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Ero Copper Corp (ERO) 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.

	ERO	CPER	Difference
Sharpe ratio Return per unit of total volatility	2.11	0.24	+1.87
Sortino ratio Return per unit of downside risk	2.46	0.54	+1.91
Omega ratio Gain probability vs. loss probability	1.33	1.09	+0.24
Calmar ratio Return relative to maximum drawdown	3.10	0.31	+2.79
Martin ratio Return relative to average drawdown	8.50	0.64	+7.87
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ERO vs. CPER - Sharpe Ratio Comparison

The current ERO Sharpe Ratio is 2.11, which is higher than the CPER Sharpe Ratio of 0.24. The chart below compares the historical Sharpe Ratios of ERO 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

	ERO	CPER	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.11	0.24	+1.87
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.17	0.26	-0.09
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.38	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.51	0.09	+0.41

Correlation

The correlation between ERO and CPER is 0.47, 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

ERO vs. CPER - Dividend Comparison

Neither ERO nor CPER has paid dividends to shareholders.

Tickers have no history of dividend payments

Drawdowns

ERO vs. CPER - Drawdown Comparison

The maximum ERO drawdown since its inception was -67.17%, which is greater than CPER's maximum drawdown of -54.04%. Use the drawdown chart below to compare losses from any high point for ERO and CPER.

Drawdown Indicators

	ERO	CPER	Difference
Max Drawdown Largest peak-to-trough decline	-67.17%	-54.04%	-13.13%
Max Drawdown (1Y) Largest decline over 1 year	-37.97%	-24.77%	-13.20%
Max Drawdown (5Y) Largest decline over 5 years	-65.66%	-34.75%	-30.91%
Max Drawdown (10Y) Largest decline over 10 years	—	-38.42%	—
Current Drawdown Current decline from peak	-29.87%	-11.06%	-18.81%
Average Drawdown Average peak-to-trough decline	-27.10%	-25.65%	-1.45%
Ulcer Index Depth and duration of drawdowns from previous peaks	13.86%	12.19%	+1.67%

Volatility

ERO vs. CPER - Volatility Comparison

Ero Copper Corp (ERO) has a higher volatility of 19.12% compared to United States Copper Index Fund (CPER) at 9.29%. This indicates that ERO'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

	ERO	CPER	Difference
Volatility (1M) Calculated over the trailing 1-month period	19.12%	9.29%	+9.83%
Volatility (6M) Calculated over the trailing 6-month period	41.88%	21.96%	+19.92%
Volatility (1Y) Calculated over the trailing 1-year period	57.11%	36.84%	+20.27%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	54.02%	26.85%	+27.17%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	59.08%	23.87%	+35.21%