COPJ vs. MGNR

Last updated Apr 2, 2026

Compare and contrast key facts about Sprott Junior Copper Miners ETF (COPJ) and American Beacon GLG Natural Resources ETF (MGNR).

COPJ and MGNR are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. COPJ is a passively managed fund by Sprott that tracks the performance of the Nasdaq Sprott Junior Copper Miners Index - Benchmark TR Net. It was launched on Feb 1, 2023. MGNR is an actively managed fund by American Beacon. It was launched on Feb 5, 2024.

Performance

COPJ vs. MGNR - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Sprott Junior Copper Miners ETF (COPJ) and American Beacon GLG Natural Resources ETF (MGNR). The values are adjusted to include any dividend payments, if applicable.

COPJ vs. MGNR - Yearly Performance Comparison

	2026 (YTD)	2025	2024
COPJ Sprott Junior Copper Miners ETF	1.20%	140.63%	18.67%
MGNR American Beacon GLG Natural Resources ETF	17.82%	50.57%	22.78%

Returns By Period

In the year-to-date period, COPJ achieves a 1.20% return, which is significantly lower than MGNR's 17.82% return.

COPJ

• 1D: 2.03%
• 1M: -19.66%
• YTD: 1.20%
• 6M: 38.36%
• 1Y: 122.82%
• 3Y*: 38.27%
• 5Y*: —
• 10Y*: —

MGNR

• 1D: 0.74%
• 1M: -4.73%
• YTD: 17.82%
• 6M: 27.81%
• 1Y: 75.84%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

COPJ vs. MGNR - Expense Ratio Comparison

COPJ has a 0.78% expense ratio, which is higher than MGNR's 0.75% expense ratio.

COPJ

Sprott Junior Copper Miners ETF

MGNR

American Beacon GLG Natural Resources ETF

Return for Risk

COPJ vs. MGNR — Risk / Return Rank

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

COPJ

COPJ Risk / Return Rank: 95
COPJ Sharpe Ratio Rank: 97
COPJ Sortino Ratio Rank: 95
COPJ Omega Ratio Rank: 94
COPJ Calmar Ratio Rank: 94
COPJ Martin Ratio Rank: 93

MGNR

MGNR Risk / Return Rank: 96
MGNR Sharpe Ratio Rank: 96
MGNR Sortino Ratio Rank: 95
MGNR Omega Ratio Rank: 96
MGNR Calmar Ratio Rank: 96
MGNR Martin Ratio Rank: 97

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.

COPJ vs. MGNR - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Sprott Junior Copper Miners ETF (COPJ) and American Beacon GLG Natural Resources ETF (MGNR). 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.

	COPJ	MGNR	Difference
Sharpe ratio Return per unit of total volatility	2.96	2.75	+0.21
Sortino ratio Return per unit of downside risk	3.13	3.21	-0.08
Omega ratio Gain probability vs. loss probability	1.45	1.49	-0.05
Calmar ratio Return relative to maximum drawdown	3.78	4.80	-1.02
Martin ratio Return relative to average drawdown	13.93	21.49	-7.56
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

COPJ vs. MGNR - Sharpe Ratio Comparison

The current COPJ Sharpe Ratio is 2.96, which is comparable to the MGNR Sharpe Ratio of 2.75. The chart below compares the historical Sharpe Ratios of COPJ and MGNR, 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

	COPJ	MGNR	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.96	2.75	+0.21
Sharpe Ratio (All Time) Calculated using the full available price history	1.03	1.73	-0.70

Correlation

The correlation between COPJ and MGNR is 0.74, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.

Dividends

COPJ vs. MGNR - Dividend Comparison

COPJ's dividend yield for the trailing twelve months is around 11.44%, more than MGNR's 0.99% yield.

	TTM	2025	2024	2023
COPJ Sprott Junior Copper Miners ETF	11.44%	11.57%	11.64%	2.48%
MGNR American Beacon GLG Natural Resources ETF	0.99%	1.17%	0.79%	0.00%

Drawdowns

COPJ vs. MGNR - Drawdown Comparison

The maximum COPJ drawdown since its inception was -32.28%, which is greater than MGNR's maximum drawdown of -22.06%. Use the drawdown chart below to compare losses from any high point for COPJ and MGNR.

Drawdown Indicators

	COPJ	MGNR	Difference
Max Drawdown Largest peak-to-trough decline	-32.28%	-22.06%	-10.22%
Max Drawdown (1Y) Largest decline over 1 year	-32.28%	-16.06%	-16.22%
Current Drawdown Current decline from peak	-22.65%	-4.73%	-17.92%
Average Drawdown Average peak-to-trough decline	-11.59%	-4.01%	-7.58%
Ulcer Index Depth and duration of drawdowns from previous peaks	8.76%	3.58%	+5.18%

Volatility

COPJ vs. MGNR - Volatility Comparison

Sprott Junior Copper Miners ETF (COPJ) has a higher volatility of 17.82% compared to American Beacon GLG Natural Resources ETF (MGNR) at 8.76%. This indicates that COPJ's price experiences larger fluctuations and is considered to be riskier than MGNR based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	COPJ	MGNR	Difference
Volatility (1M) Calculated over the trailing 1-month period	17.82%	8.76%	+9.06%
Volatility (6M) Calculated over the trailing 6-month period	34.55%	19.87%	+14.68%
Volatility (1Y) Calculated over the trailing 1-year period	41.70%	27.73%	+13.97%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	33.87%	25.39%	+8.48%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	33.87%	25.39%	+8.48%