WDIG vs. CPER

Last updated Jun 4, 2026

WDIG (WisdomTree Efficient Rare Earth Plus Strategic Metals Fund) and CPER (United States Copper Index Fund) are both exchange-traded funds - WDIG is a Commodities fund actively managed by WisdomTree, while CPER is a Metals fund tracking the SummerHaven Copper Index Total Return. WDIG is actively managed, while CPER is passively managed. A 0.70 correlation means they provide meaningful diversification when combined. WDIG charges 0.55%/yr vs 1.06%/yr for CPER.

Performance

WDIG vs. CPER - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in WisdomTree Efficient Rare Earth Plus Strategic Metals Fund (WDIG) and United States Copper Index Fund (CPER). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

WDIG

• 1D: -4.03%
• 1M: —
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

CPER

• 1D: -2.91%
• 1M: 10.79%
• YTD: 12.76%
• 6M: 19.35%
• 1Y: 29.71%
• 3Y*: 19.71%
• 5Y*: 7.21%
• 10Y*: 10.91%

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

WDIG vs. CPER - Yearly Performance Comparison

	2026 (YTD)
WDIG WisdomTree Efficient Rare Earth Plus Strategic Metals Fund	1.18%
CPER United States Copper Index Fund	5.54%

Correlation

The correlation between WDIG and CPER is 0.70, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (All Time) Calculated using the full available price history since May 8, 2026	0.70

Return for Risk

WDIG vs. CPER — Risk / Return Rank

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

CPER

CPER Risk / Return Rank: 24
CPER Sharpe Ratio Rank: 24
CPER Sortino Ratio Rank: 22
CPER Omega Ratio Rank: 30
CPER Calmar Ratio Rank: 25
CPER Martin Ratio Rank: 21

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.

WDIG vs. CPER - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for WisdomTree Efficient Rare Earth Plus Strategic Metals Fund (WDIG) 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.

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

Sharpe Ratios by Period

	WDIG	CPER	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	—	0.87	—
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.27	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.46	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.35	0.13	+0.22

Drawdowns

WDIG vs. CPER - Drawdown Comparison

The maximum WDIG drawdown since its inception was -15.71%, smaller than the maximum CPER drawdown of -54.04%. Use the drawdown chart below to compare losses from any high point for WDIG and CPER.

Drawdown Indicators

	WDIG	CPER	Difference
Max Drawdown Largest peak-to-trough decline	-15.71%	-54.04%	+38.33%
Max Drawdown (1Y) Largest decline over 1 year	—	-24.77%	—
Max Drawdown (3Y) Largest decline over 3 years	—	-24.77%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-34.75%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-38.42%	—
Current Drawdown Current decline from peak	-5.40%	-2.91%	-2.49%
Average Drawdown Average peak-to-trough decline	-6.14%	-25.41%	+19.27%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	11.93%	—

Volatility

Volatility by Period

	WDIG	CPER	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	9.73%	—
Volatility (6M) Calculated over the trailing 6-month period	—	22.85%	—
Volatility (1Y) Calculated over the trailing 1-year period	52.06%	34.48%	+17.58%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	52.06%	26.97%	+25.09%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	52.06%	24.04%	+28.02%

WDIG vs. CPER - Expense Ratio Comparison

WDIG has a 0.55% expense ratio, which is lower than CPER's 1.06% expense ratio.

Dividends

WDIG vs. CPER - Dividend Comparison

Neither WDIG nor CPER has paid dividends to shareholders.

Tickers have no history of dividend payments

Frequently Asked Questions

Can I hold both WDIG and CPER in my portfolio?

WDIG and CPER have a correlation of 0.70, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, WDIG or CPER?

On fees, WDIG is cheaper at 0.55% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, WDIG or CPER?

WDIG is cheaper with a 0.55% expense ratio, compared with 1.06% for CPER.

Which ETF pays a higher dividend yield, WDIG or CPER?

WDIG and CPER have nearly identical dividend yields, around 0.00%.

What is the main difference between WDIG and CPER?

WDIG is categorized as Commodities, while CPER is Metals. They also come from different issuers: WisdomTree and USCF. Their fees differ too: 0.55% for WDIG and 1.06% for CPER.