UNM vs. CPER

Last updated Aug 4, 2026

UNM (Unum Group) is a stock, while CPER (United States Copper Index Fund) is Copper fund tracking the SummerHaven Copper Index Total Return. Over the past 10 years, UNM returned 13.83%/yr vs 10.80%/yr for CPER. Their 0.20 correlation means their historical movements had little consistent relationship.

Performance

UNM vs. CPER - Performance Comparison

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

Returns By Period

In the year-to-date period, UNM achieves a 18.36% return, which is significantly higher than CPER's 13.39% return. Over the past 10 years, UNM has outperformed CPER with an annualized return of 13.83%, while CPER has yielded a comparatively lower 10.80% annualized return.

UNM

• 1D: 4.65%
• 1M: -1.84%
• 6M: 19.23%
• YTD: 18.36%
• 1Y: 32.35%
• 3Y*: 24.61%
• 5Y*: 33.36%
• 10Y*: 13.83%
• ALL TIME*: 8.95%

CPER

• 1D: 0.20%
• 1M: 6.30%
• 6M: 10.48%
• YTD: 13.39%
• 1Y: 43.78%
• 3Y*: 18.39%
• 5Y*: 8.40%
• 10Y*: 10.80%
• ALL TIME*: 3.15%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
CPER United States Copper Index Fund	$17.79M	$15.35M	$24.62M
UNM Unum Group	$156.60M	$141.20M	$125.50M

UNM vs. CPER - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
UNM Unum Group	18.36%	8.56%	66.31%	13.72%	73.56%	11.87%	-16.22%	2.63%	-45.22%	27.19%
CPER United States Copper Index Fund	13.39%	38.95%	4.23%	4.55%	-15.14%	25.21%	23.90%	6.66%	-21.91%	28.80%

Correlation

The correlation between UNM and CPER is 0.05, meaning there was essentially no consistent relationship between their historical price movements. Each responded to its own set of market drivers.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.05
Correlation (3Y) Balances recent behavior with more history.	0.08
Correlation (5Y) Shows whether the relationship held over a longer period.	0.14
Correlation (10Y) Provides a long-term view across more market conditions.	0.20
Correlation (All Time) Calculated using the full available price history since Nov 15, 2011	0.20

The correlation between UNM and CPER shifts across timeframes, from 0.05 (1 year) to 0.20 (10 years), reflecting how their relationship changes across market environments.

Return for Risk

UNM vs. CPER — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

UNM

UNM Risk / Return Rank: 83
UNM Sharpe Ratio Rank: 84
UNM Sortino Ratio Rank: 81
UNM Omega Ratio Rank: 80
UNM Calmar Ratio Rank: 85
UNM Martin Ratio Rank: 85

CPER

CPER Risk / Return Rank: 67
CPER Sharpe Ratio Rank: 67
CPER Sortino Ratio Rank: 63
CPER Omega Ratio Rank: 64
CPER Calmar Ratio Rank: 75
CPER Martin Ratio Rank: 67

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

UNM vs. CPER - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Unum Group (UNM) 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.

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.

	UNM	CPER	Difference
Sharpe ratio: Return per unit of total volatility	1.44	1.57	-0.13
Sortino ratio: Return per unit of downside risk	2.13	2.13	0.00
Omega ratio: Gain probability vs. loss probability	1.27	1.28	-0.01
Calmar ratio: Return relative to maximum drawdown	2.81	2.68	+0.14
Martin ratio: Return relative to average drawdown	7.04	8.34	-1.30

UNM vs. CPER - Sharpe Ratio Comparison

The current UNM Sharpe Ratio is 1.44, which is comparable to the CPER Sharpe Ratio of 1.57. The chart below compares the historical Sharpe Ratios of UNM and CPER, 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

UNM vs. CPER - Drawdown Comparison

The maximum UNM drawdown since its inception was -89.38%, which is greater than CPER's maximum drawdown of -54.04%. Use the drawdown chart below to compare losses from any high point for UNM and CPER.

Drawdown Indicators

	UNM	CPER	Difference
Max Drawdown Largest peak-to-trough decline	-89.38%	-54.04%	-35.34%
Max Drawdown (1Y) Largest decline over 1 year	-11.55%	-16.43%	+4.88%
Max Drawdown (3Y) Largest decline over 3 years	-17.94%	-24.77%	+6.83%
Max Drawdown (5Y) Largest decline over 5 years	-20.95%	-34.75%	+13.80%
Max Drawdown (10Y) Largest decline over 10 years	-81.06%	-38.42%	-42.64%
Current Drawdown Current decline from peak	-2.25%	-2.36%	+0.11%
Average Drawdown Average peak-to-trough decline	-32.57%	-25.18%	-7.39%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.61%	5.27%	-0.66%

Volatility

UNM vs. CPER - Volatility Comparison

Unum Group (UNM) has a higher volatility of 9.57% compared to United States Copper Index Fund (CPER) at 6.29%. This indicates that UNM'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

	UNM	CPER	Difference
Volatility (1M) Calculated over the trailing 1-month period	9.57%	6.29%	+3.28%
Volatility (6M) Calculated over the trailing 6-month period	17.13%	20.70%	-3.57%
Volatility (1Y) Calculated over the trailing 1-year period	22.66%	28.05%	-5.39%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	29.88%	27.08%	+2.80%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	37.49%	24.12%	+13.37%

Dividends

UNM vs. CPER - Dividend Comparison

UNM's dividend yield for the trailing twelve months is around 2.09%, while CPER has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
CPER United States Copper Index Fund	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
UNM Unum Group	2.09%	2.27%	2.15%	3.07%	3.07%	4.76%	4.97%	3.74%	3.34%	1.57%	1.75%	2.10%

Frequently Asked Questions

Can I hold both UNM and CPER in my portfolio?

UNM and CPER have a correlation of 0.05, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, UNM or CPER?

UNM has higher volatility (9.57%) compared to CPER (6.29%). In terms of maximum drawdown, UNM dropped -89.38% vs CPER's -54.04%.

Which has better risk-adjusted returns?

CPER currently has the higher Sharpe Ratio (1.57 vs 1.44), 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.