XME vs. CPER
XME (SPDR S&P Metals & Mining ETF) and CPER (United States Copper Index Fund) are both exchange-traded funds - XME is a Materials fund tracking the S&P Metals & Mining Select Industry Index, while CPER is a Copper fund tracking the SummerHaven Copper Index Total Return. Both are passively managed. Over the past 10 years, XME returned 19.14%/yr vs 11.25%/yr for CPER. At a 0.46 correlation, their price movements are largely independent. XME charges 0.35%/yr vs 1.06%/yr for CPER.
Performance
XME vs. CPER - Performance Comparison
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Returns By Period
In the year-to-date period, XME achieves a 16.50% return, which is significantly higher than CPER's 13.42% return. Over the past 10 years, XME has outperformed CPER with an annualized return of 19.14%, while CPER has yielded a comparatively lower 11.25% annualized return.
XME
- 1D
- 0.16%
- 1M
- 4.36%
- YTD
- 16.50%
- 6M
- 19.83%
- 1Y
- 85.37%
- 3Y*
- 35.28%
- 5Y*
- 22.93%
- 10Y*
- 19.14%
CPER
- 1D
- 0.25%
- 1M
- 3.96%
- YTD
- 13.42%
- 6M
- 19.61%
- 1Y
- 33.19%
- 3Y*
- 18.43%
- 5Y*
- 8.39%
- 10Y*
- 11.25%
XME vs. CPER - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
XME SPDR S&P Metals & Mining ETF | 16.50% | 83.47% | -4.54% | 21.51% | 13.13% | 34.92% | 15.95% | 14.69% | -26.78% | 21.17% |
CPER United States Copper Index Fund | 13.42% | 38.95% | 4.23% | 4.55% | -15.14% | 25.21% | 23.90% | 6.66% | -21.91% | 28.80% |
Correlation
The correlation between XME and CPER is 0.57, 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 | 0.57 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.52 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.54 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.51 |
Correlation (All Time) Calculated using the full available price history since Nov 15, 2011 | 0.46 |
The correlation between XME and CPER shifts across timeframes, from 0.46 (all time) to 0.57 (1 year), reflecting how their relationship changes across market environments.
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Return for Risk
XME vs. CPER — Risk / Return Rank
XME
CPER
XME vs. CPER - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for SPDR S&P Metals & Mining ETF (XME) 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.
| XME | CPER | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +1.42 | ||
| Sortino ratioReturn per unit of downside risk | +1.52 | ||
| Omega ratioGain probability vs. loss probability | 1.37 | 1.22 | +0.15 |
| Calmar ratioReturn relative to maximum drawdown | 3.80 | 1.35 | +2.45 |
| Martin ratioReturn relative to average drawdown | 9.44 | 2.78 | +6.66 |
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Drawdowns
XME vs. CPER - Drawdown Comparison
The maximum XME drawdown since its inception was -85.89%, which is greater than CPER's maximum drawdown of -54.04%. Use the drawdown chart below to compare losses from any high point for XME and CPER.
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Drawdown Indicators
| XME | CPER | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -85.89% | -54.04% | -31.85% |
Max Drawdown (1Y)Largest decline over 1 year | -22.60% | -24.77% | +2.17% |
Max Drawdown (3Y)Largest decline over 3 years | -30.47% | -24.77% | -5.70% |
Max Drawdown (5Y)Largest decline over 5 years | -37.27% | -34.75% | -2.52% |
Max Drawdown (10Y)Largest decline over 10 years | -61.69% | -38.42% | -23.27% |
Current DrawdownCurrent decline from peak | -9.18% | -2.34% | -6.84% |
Average DrawdownAverage peak-to-trough decline | -44.08% | -25.35% | -18.73% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 9.07% | 11.95% | -2.88% |
Volatility
XME vs. CPER - Volatility Comparison
SPDR S&P Metals & Mining ETF (XME) has a higher volatility of 15.14% compared to United States Copper Index Fund (CPER) at 10.05%. This indicates that XME'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.
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Volatility by Period
| XME | CPER | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 15.14% | 10.05% | +5.09% |
Volatility (6M)Calculated over the trailing 6-month period | 28.15% | 23.31% | +4.84% |
Volatility (1Y)Calculated over the trailing 1-year period | 36.17% | 34.88% | +1.29% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 32.83% | 27.03% | +5.80% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 32.93% | 24.09% | +8.84% |
XME vs. CPER - Expense Ratio Comparison
XME has a 0.35% expense ratio, which is lower than CPER's 1.06% expense ratio.
Dividends
XME vs. CPER - Dividend Comparison
XME's dividend yield for the trailing twelve months is around 0.32%, 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% |
XME SPDR S&P Metals & Mining ETF | 0.32% | 0.38% | 0.65% | 1.00% | 1.64% | 0.70% | 0.99% | 2.43% | 2.23% | 1.15% | 1.02% | 2.61% |
Frequently Asked Questions
XME and CPER have a correlation of 0.57, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
XME has higher volatility (15.14%) compared to CPER (10.05%). In terms of maximum drawdown, XME dropped -85.89% vs CPER's -54.04%.
On 10-year performance, XME leads with 19.14% vs 11.25% for CPER. On fees, XME is cheaper at 0.35% per year. On volatility, CPER has been the lower-risk option at 10.05%. The better choice depends on whether you care most about return, fees, risk, or income.
Over the 10-year period, XME has performed better with a 19.14% return vs 11.25%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
XME is cheaper with a 0.35% expense ratio, compared with 1.06% for CPER.
XME has the higher dividend yield at 0.32%, compared with 0.00% for CPER.
XME is categorized as Materials, while CPER is Copper. XME tracks S&P Metals & Mining Select Industry Index, while CPER tracks SummerHaven Copper Index Total Return. They also come from different issuers: State Street and USCF. Their fees differ too: 0.35% for XME and 1.06% for CPER.
XME currently has the higher Sharpe Ratio (2.38 vs 0.96), 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.
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