COPX vs. BRK-B

Last updated Jun 14, 2026

COPX (Global X Copper Miners ETF) is Copper fund tracking the Solactive Global Copper Miners Total Return Index, while BRK-B (Berkshire Hathaway Inc.) is a stock. Over the past 10 years, COPX returned 21.86%/yr vs 13.22%/yr for BRK-B. At a 0.42 correlation, their price movements are largely independent.

Performance

COPX vs. BRK-B - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Global X Copper Miners ETF (COPX) and Berkshire Hathaway Inc. (BRK-B). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, COPX achieves a 19.75% return, which is significantly higher than BRK-B's -2.67% return. Over the past 10 years, COPX has outperformed BRK-B with an annualized return of 21.86%, while BRK-B has yielded a comparatively lower 13.22% annualized return.

COPX

• 1D: 3.38%
• 1M: 3.52%
• YTD: 19.75%
• 6M: 29.13%
• 1Y: 106.27%
• 3Y*: 33.96%
• 5Y*: 19.28%
• 10Y*: 21.86%

BRK-B

• 1D: 0.71%
• 1M: 1.36%
• YTD: -2.67%
• 6M: -2.06%
• 1Y: 0.35%
• 3Y*: 13.30%
• 5Y*: 11.27%
• 10Y*: 13.22%

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

COPX vs. BRK-B - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
COPX Global X Copper Miners ETF	19.75%	93.50%	3.57%	8.38%	-0.76%	23.39%	51.66%	12.48%	-31.31%	38.92%
BRK-B Berkshire Hathaway Inc.	-2.67%	10.89%	27.09%	15.46%	3.31%	28.95%	2.37%	10.93%	3.01%	21.62%

Correlation

The correlation between COPX and BRK-B is 0.02, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.02
Correlation (3Y) Calculated over the trailing 3-year period	0.14
Correlation (5Y) Calculated over the trailing 5-year period	0.31
Correlation (10Y) Calculated over the trailing 10-year period	0.37
Correlation (All Time) Calculated using the full available price history since Apr 20, 2010	0.42

Over the past year, the correlation between COPX and BRK-B has dropped to 0.02 - well below their long-term average of 0.42, suggesting their price drivers have been diverging.

Return for Risk

COPX vs. BRK-B — Risk / Return Rank

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

COPX

COPX Risk / Return Rank: 76
COPX Sharpe Ratio Rank: 85
COPX Sortino Ratio Rank: 69
COPX Omega Ratio Rank: 70
COPX Calmar Ratio Rank: 81
COPX Martin Ratio Rank: 72

BRK-B

BRK-B Risk / Return Rank: 39
BRK-B Sharpe Ratio Rank: 42
BRK-B Sortino Ratio Rank: 34
BRK-B Omega Ratio Rank: 33
BRK-B Calmar Ratio Rank: 42
BRK-B Martin Ratio Rank: 42

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. BRK-B - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Global X Copper Miners ETF (COPX) and Berkshire Hathaway Inc. (BRK-B). 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.

	COPX	BRK-B	Difference
Sharpe ratio: Return per unit of total volatility	2.39	-0.02	+2.41
Sortino ratio: Return per unit of downside risk	2.70	0.08	+2.62
Omega ratio: Gain probability vs. loss probability	1.36	1.01	+0.35
Calmar ratio: Return relative to maximum drawdown	3.75	-0.02	+3.77
Martin ratio: Return relative to average drawdown	11.60	-0.05	+11.65

COPX vs. BRK-B - Sharpe Ratio Comparison

The current COPX Sharpe Ratio is 2.39, which is higher than the BRK-B Sharpe Ratio of -0.02. The chart below compares the historical Sharpe Ratios of COPX and BRK-B, 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

COPX vs. BRK-B - Drawdown Comparison

The maximum COPX drawdown since its inception was -83.16%, which is greater than BRK-B's maximum drawdown of -53.86%. Use the drawdown chart below to compare losses from any high point for COPX and BRK-B.

Drawdown Indicators

	COPX	BRK-B	Difference
Max Drawdown Largest peak-to-trough decline	-83.16%	-53.86%	-29.30%
Max Drawdown (1Y) Largest decline over 1 year	-27.82%	-9.42%	-18.40%
Max Drawdown (3Y) Largest decline over 3 years	-39.72%	-14.95%	-24.77%
Max Drawdown (5Y) Largest decline over 5 years	-42.12%	-26.58%	-15.54%
Max Drawdown (10Y) Largest decline over 10 years	-65.41%	-29.57%	-35.84%
Current Drawdown Current decline from peak	-10.17%	-9.36%	-0.81%
Average Drawdown Average peak-to-trough decline	-39.28%	-11.07%	-28.21%
Ulcer Index Depth and duration of drawdowns from previous peaks	8.98%	4.53%	+4.45%

Volatility

COPX vs. BRK-B - Volatility Comparison

Global X Copper Miners ETF (COPX) has a higher volatility of 19.30% compared to Berkshire Hathaway Inc. (BRK-B) at 3.95%. This indicates that COPX's price experiences larger fluctuations and is considered to be riskier than BRK-B based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	COPX	BRK-B	Difference
Volatility (1M) Calculated over the trailing 1-month period	19.30%	3.95%	+15.35%
Volatility (6M) Calculated over the trailing 6-month period	38.15%	10.78%	+27.37%
Volatility (1Y) Calculated over the trailing 1-year period	43.66%	14.38%	+29.28%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	37.00%	17.12%	+19.88%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	35.75%	19.44%	+16.31%

Dividends

COPX vs. BRK-B - Dividend Comparison

COPX's dividend yield for the trailing twelve months is around 2.24%, while BRK-B has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BRK-B Berkshire Hathaway Inc.	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
COPX Global X Copper Miners ETF	2.24%	2.68%	1.80%	2.39%	3.14%	1.48%	1.30%	1.37%	2.59%	1.57%	0.60%	1.20%

Frequently Asked Questions

Can I hold both COPX and BRK-B in my portfolio?

COPX and BRK-B have a correlation of 0.02, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, COPX or BRK-B?

COPX has higher volatility (19.30%) compared to BRK-B (3.95%). In terms of maximum drawdown, COPX dropped -83.16% vs BRK-B's -53.86%.

Which has better risk-adjusted returns?

COPX currently has the higher Sharpe Ratio (2.39 vs -0.02), 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.