CPER vs. BRK-B

Last updated Jun 9, 2026

CPER (United States Copper Index Fund) is Metals fund tracking the SummerHaven Copper Index Total Return, while BRK-B (Berkshire Hathaway Inc.) is a stock. Over the past 10 years, CPER returned 11.08%/yr vs 13.14%/yr for BRK-B. At a 0.21 correlation, their price movements are largely independent.

Performance

CPER vs. BRK-B - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in United States Copper Index Fund (CPER) 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, CPER achieves a 10.27% return, which is significantly higher than BRK-B's -3.11% return. Over the past 10 years, CPER has underperformed BRK-B with an annualized return of 11.08%, while BRK-B has yielded a comparatively higher 13.14% annualized return.

CPER

• 1D: 1.23%
• 1M: 0.73%
• YTD: 10.27%
• 6M: 15.97%
• 1Y: 27.52%
• 3Y*: 18.31%
• 5Y*: 6.72%
• 10Y*: 11.08%

BRK-B

• 1D: -0.23%
• 1M: 2.32%
• YTD: -3.11%
• 6M: -2.06%
• 1Y: -1.32%
• 3Y*: 13.25%
• 5Y*: 11.03%
• 10Y*: 13.14%

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

CPER vs. BRK-B - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
CPER United States Copper Index Fund	10.27%	38.95%	4.23%	4.55%	-15.14%	25.21%	23.90%	6.66%	-21.91%	28.80%
BRK-B Berkshire Hathaway Inc.	-3.11%	10.89%	27.09%	15.46%	3.31%	28.95%	2.37%	10.93%	3.01%	21.62%

Correlation

The correlation between CPER and BRK-B is 0.04, 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	0.04
Correlation (3Y) Calculated over the trailing 3-year period	0.06
Correlation (5Y) Calculated over the trailing 5-year period	0.17
Correlation (10Y) Calculated over the trailing 10-year period	0.22
Correlation (All Time) Calculated using the full available price history since Nov 16, 2011	0.21

The correlation between CPER and BRK-B shifts across timeframes, from 0.04 (1 year) to 0.22 (10 years), reflecting how their relationship changes across market environments.

Return for Risk

CPER vs. BRK-B — Risk / Return Rank

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

CPER

CPER Risk / Return Rank: 25
CPER Sharpe Ratio Rank: 25
CPER Sortino Ratio Rank: 23
CPER Omega Ratio Rank: 31
CPER Calmar Ratio Rank: 26
CPER Martin Ratio Rank: 21

BRK-B

BRK-B Risk / Return Rank: 35
BRK-B Sharpe Ratio Rank: 38
BRK-B Sortino Ratio Rank: 30
BRK-B Omega Ratio Rank: 30
BRK-B Calmar Ratio Rank: 38
BRK-B Martin Ratio Rank: 37

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.

CPER vs. BRK-B - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for United States Copper Index Fund (CPER) 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.

	CPER	BRK-B	Difference
Sharpe ratio: Return per unit of total volatility	0.80	-0.09	+0.89
Sortino ratio: Return per unit of downside risk	1.15	-0.03	+1.17
Omega ratio: Gain probability vs. loss probability	1.19	1.00	+0.20
Calmar ratio: Return relative to maximum drawdown	1.12	-0.14	+1.26
Martin ratio: Return relative to average drawdown	2.31	-0.30	+2.61
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

CPER vs. BRK-B - Sharpe Ratio Comparison

The current CPER Sharpe Ratio is 0.80, which is higher than the BRK-B Sharpe Ratio of -0.09. The chart below compares the historical Sharpe Ratios of CPER 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.

Sharpe Ratios by Period

	CPER	BRK-B	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.80	-0.09	+0.89
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.25	0.65	-0.40
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.46	0.68	-0.22
Sharpe Ratio (All Time) Calculated using the full available price history	0.13	0.48	-0.36

Drawdowns

CPER vs. BRK-B - Drawdown Comparison

The maximum CPER drawdown since its inception was -54.04%, roughly equal to the maximum BRK-B drawdown of -53.86%. Use the drawdown chart below to compare losses from any high point for CPER and BRK-B.

Drawdown Indicators

	CPER	BRK-B	Difference
Max Drawdown Largest peak-to-trough decline	-54.04%	-53.86%	-0.18%
Max Drawdown (1Y) Largest decline over 1 year	-24.77%	-9.42%	-15.35%
Max Drawdown (3Y) Largest decline over 3 years	-24.77%	-14.95%	-9.82%
Max Drawdown (5Y) Largest decline over 5 years	-34.75%	-26.58%	-8.17%
Max Drawdown (10Y) Largest decline over 10 years	-38.42%	-29.57%	-8.85%
Current Drawdown Current decline from peak	-5.05%	-9.78%	+4.73%
Average Drawdown Average peak-to-trough decline	-25.39%	-11.07%	-14.32%
Ulcer Index Depth and duration of drawdowns from previous peaks	11.94%	4.49%	+7.45%

Volatility

CPER vs. BRK-B - Volatility Comparison

United States Copper Index Fund (CPER) has a higher volatility of 10.22% compared to Berkshire Hathaway Inc. (BRK-B) at 3.98%. This indicates that CPER'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

	CPER	BRK-B	Difference
Volatility (1M) Calculated over the trailing 1-month period	10.22%	3.98%	+6.24%
Volatility (6M) Calculated over the trailing 6-month period	23.14%	10.87%	+12.27%
Volatility (1Y) Calculated over the trailing 1-year period	34.78%	14.38%	+20.40%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	27.04%	17.13%	+9.91%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	24.07%	19.44%	+4.63%

Dividends

CPER vs. BRK-B - Dividend Comparison

Neither CPER nor BRK-B has paid dividends to shareholders.

Tickers have no history of dividend payments

Frequently Asked Questions

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

CPER and BRK-B have a correlation of 0.04, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, CPER or BRK-B?

CPER has higher volatility (10.22%) compared to BRK-B (3.98%). In terms of maximum drawdown, CPER dropped -54.04% vs BRK-B's -53.86%.

Which has better risk-adjusted returns?

CPER currently has the higher Sharpe Ratio (0.80 vs -0.09), 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.