AUMI vs. COPJ

Last updated Jun 13, 2026

AUMI (Themes Gold Miners ETF) and COPJ (Sprott Junior Copper Miners ETF) are both exchange-traded funds - AUMI is a Gold fund tracking the Solactive Global Pure Gold Miners Index, while COPJ is a Commodity Producers Equities fund tracking the Nasdaq Sprott Junior Copper Miners Index. Both are passively managed. Over the past year, AUMI returned 38.17% vs 100.49% for COPJ. A 0.60 correlation means they provide meaningful diversification when combined. AUMI charges 0.35%/yr vs 0.78%/yr for COPJ.

Performance

AUMI vs. COPJ - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Themes Gold Miners ETF (AUMI) and Sprott Junior Copper Miners ETF (COPJ). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, AUMI achieves a -11.62% return, which is significantly lower than COPJ's 8.25% return.

AUMI

• 1D: 2.52%
• 1M: -17.27%
• YTD: -11.62%
• 6M: -9.97%
• 1Y: 38.17%
• 3Y*: —
• 5Y*: —
• 10Y*: —

COPJ

• 1D: 4.06%
• 1M: -7.22%
• YTD: 8.25%
• 6M: 18.98%
• 1Y: 100.49%
• 3Y*: 41.69%
• 5Y*: —
• 10Y*: —

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

AUMI vs. COPJ - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023
AUMI Themes Gold Miners ETF	-11.62%	164.18%	30.61%	10.23%
COPJ Sprott Junior Copper Miners ETF	8.25%	140.63%	11.07%	13.13%

Correlation

The correlation between AUMI and COPJ is 0.63, 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	0.63
Correlation (All Time) Calculated using the full available price history since Dec 13, 2023	0.60

The correlation between AUMI and COPJ has been stable across timeframes, ranging from 0.60 to 0.63 - a consistent structural relationship.

AUMI vs. COPJ - Sectors Allocation Comparison

Sectors	AUMI	COPJ
Basic Materials	99.4%	100.0%
Communication Services	0.1%	-
Consumer Cyclical	-	-
Consumer Defensive	-	-
Energy	-	-
Financial Services	-	-
Healthcare	-	-
Industrials	-	-
Real Estate	-	-
Technology	-	3.6%
Utilities	-	-

Return for Risk

AUMI vs. COPJ — Risk / Return Rank

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

AUMI

AUMI Risk / Return Rank: 25
AUMI Sharpe Ratio Rank: 25
AUMI Sortino Ratio Rank: 25
AUMI Omega Ratio Rank: 28
AUMI Calmar Ratio Rank: 24
AUMI Martin Ratio Rank: 24

COPJ

COPJ Risk / Return Rank: 70
COPJ Sharpe Ratio Rank: 84
COPJ Sortino Ratio Rank: 66
COPJ Omega Ratio Rank: 72
COPJ Calmar Ratio Rank: 72
COPJ Martin Ratio Rank: 57

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.

AUMI vs. COPJ - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Themes Gold Miners ETF (AUMI) and Sprott Junior Copper Miners ETF (COPJ). 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.

	AUMI	COPJ	Difference
Sharpe ratio: Return per unit of total volatility	0.78	2.33	-1.55
Sortino ratio: Return per unit of downside risk	1.24	2.62	-1.38
Omega ratio: Gain probability vs. loss probability	1.17	1.37	-0.20
Calmar ratio: Return relative to maximum drawdown	0.98	3.21	-2.23
Martin ratio: Return relative to average drawdown	2.81	8.96	-6.16

AUMI vs. COPJ - Sharpe Ratio Comparison

The current AUMI Sharpe Ratio is 0.78, which is lower than the COPJ Sharpe Ratio of 2.33. The chart below compares the historical Sharpe Ratios of AUMI and COPJ, 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

AUMI vs. COPJ - Drawdown Comparison

The maximum AUMI drawdown since its inception was -39.28%, which is greater than COPJ's maximum drawdown of -32.28%. Use the drawdown chart below to compare losses from any high point for AUMI and COPJ.

Drawdown Indicators

	AUMI	COPJ	Difference
Max Drawdown Largest peak-to-trough decline	-39.28%	-32.28%	-7.00%
Max Drawdown (1Y) Largest decline over 1 year	-39.28%	-32.28%	-7.00%
Max Drawdown (3Y) Largest decline over 3 years	—	-32.28%	—
Current Drawdown Current decline from peak	-33.51%	-17.26%	-16.25%
Average Drawdown Average peak-to-trough decline	-7.35%	-11.97%	+4.62%
Ulcer Index Depth and duration of drawdowns from previous peaks	13.72%	11.53%	+2.19%

Volatility

AUMI vs. COPJ - Volatility Comparison

The current volatility for Themes Gold Miners ETF (AUMI) is 17.47%, while Sprott Junior Copper Miners ETF (COPJ) has a volatility of 19.44%. This indicates that AUMI experiences smaller price fluctuations and is considered to be less risky than COPJ based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	AUMI	COPJ	Difference
Volatility (1M) Calculated over the trailing 1-month period	17.47%	19.44%	-1.97%
Volatility (6M) Calculated over the trailing 6-month period	40.45%	37.98%	+2.47%
Volatility (1Y) Calculated over the trailing 1-year period	49.48%	44.42%	+5.06%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	42.24%	35.48%	+6.76%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	42.24%	35.48%	+6.76%

AUMI vs. COPJ - Expense Ratio Comparison

AUMI has a 0.35% expense ratio, which is lower than COPJ's 0.78% expense ratio.

Dividends

AUMI vs. COPJ - Dividend Comparison

AUMI's dividend yield for the trailing twelve months is around 0.98%, less than COPJ's 10.69% yield.

Position	TTM	2025	2024	2023
AUMI Themes Gold Miners ETF	0.98%	0.86%	1.84%	0.00%
COPJ Sprott Junior Copper Miners ETF	10.69%	11.57%	11.64%	2.48%

Frequently Asked Questions

Can I hold both AUMI and COPJ in my portfolio?

AUMI and COPJ have a correlation of 0.63, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, AUMI or COPJ?

COPJ has higher volatility (19.44%) compared to AUMI (17.47%). In terms of maximum drawdown, AUMI dropped -39.28% vs COPJ's -32.28%.

Which ETF is better, AUMI or COPJ?

On 1-year performance, COPJ leads with 100.49% vs 38.17% for AUMI. On fees, AUMI is cheaper at 0.35% per year. On volatility, AUMI has been the lower-risk option at 17.47%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, AUMI or COPJ?

Over the 1-year period, COPJ has performed better with a 100.49% return vs 38.17%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, AUMI or COPJ?

AUMI is cheaper with a 0.35% expense ratio, compared with 0.78% for COPJ.

Which ETF pays a higher dividend yield, AUMI or COPJ?

COPJ has the higher dividend yield at 10.69%, compared with 0.98% for AUMI.

What is the main difference between AUMI and COPJ?

AUMI is categorized as Gold, while COPJ is Commodity Producers Equities. AUMI tracks Solactive Global Pure Gold Miners Index, while COPJ tracks Nasdaq Sprott Junior Copper Miners Index. They also come from different issuers: Themes and Sprott. Their fees differ too: 0.35% for AUMI and 0.78% for COPJ.

Which has better risk-adjusted returns?

COPJ currently has the higher Sharpe Ratio (2.33 vs 0.78), 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.