URPIX vs. SOPIX
URPIX (ProFunds UltraBear Fund) and SOPIX (ProFunds Short NASDAQ-100 Fund) are both Inverse Equities funds from ProFunds. Over the past 10 years, URPIX returned -28.18%/yr vs -20.31%/yr for SOPIX. Their correlation of 0.89 suggests significant overlap in exposure. Both charge a 1.78% expense ratio.
Performance
URPIX vs. SOPIX - Performance Comparison
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Returns By Period
In the year-to-date period, URPIX achieves a -16.69% return, which is significantly lower than SOPIX's -14.30% return. Over the past 10 years, URPIX has underperformed SOPIX with an annualized return of -28.18%, while SOPIX has yielded a comparatively higher -20.31% annualized return.
URPIX
- 1D
- -0.66%
- 1M
- 0.84%
- 6M
- -14.91%
- YTD
- -16.69%
- 1Y
- -28.97%
- 3Y*
- -27.80%
- 5Y*
- -21.97%
- 10Y*
- -28.18%
SOPIX
- 1D
- -1.08%
- 1M
- 3.17%
- 6M
- -13.72%
- YTD
- -14.30%
- 1Y
- -20.94%
- 3Y*
- -19.55%
- 5Y*
- -14.92%
- 10Y*
- -20.31%
URPIX vs. SOPIX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
URPIX ProFunds UltraBear Fund | -16.69% | -27.06% | -32.89% | -31.77% | 29.74% | -43.61% | -51.10% | -42.03% | 4.20% | -32.58% |
SOPIX ProFunds Short NASDAQ-100 Fund | -14.30% | -15.80% | -23.82% | -31.85% | 34.73% | -25.69% | -42.92% | -28.29% | -3.07% | -25.24% |
Correlation
The correlation between URPIX and SOPIX is 0.93, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.93 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.93 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.94 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.91 |
Correlation (All Time) Calculated using the full available price history since Jan 2, 2003 | 0.89 |
The correlation between URPIX and SOPIX has been stable across timeframes, ranging from 0.89 to 0.94 - a consistent structural relationship.
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Return for Risk
URPIX vs. SOPIX — Risk / Return Rank
URPIX
SOPIX
URPIX vs. SOPIX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for ProFunds UltraBear Fund (URPIX) and ProFunds Short NASDAQ-100 Fund (SOPIX). 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.
| URPIX | SOPIX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.01 | ||
| Sortino ratioReturn per unit of downside risk | -0.02 | ||
| Omega ratioGain probability vs. loss probability | 0.82 | 0.82 | 0.00 |
| Calmar ratioReturn relative to maximum drawdown | -0.93 | -0.85 | -0.08 |
| Martin ratioReturn relative to average drawdown | -1.66 | -1.75 | +0.09 |
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Drawdowns
URPIX vs. SOPIX - Drawdown Comparison
The maximum URPIX drawdown since its inception was -99.92%, roughly equal to the maximum SOPIX drawdown of -99.07%. Use the drawdown chart below to compare losses from any high point for URPIX and SOPIX.
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Drawdown Indicators
| URPIX | SOPIX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -99.92% | -99.07% | -0.85% |
Max Drawdown (1Y)Largest decline over 1 year | -30.79% | -24.87% | -5.92% |
Max Drawdown (3Y)Largest decline over 3 years | -69.89% | -54.87% | -15.02% |
Max Drawdown (5Y)Largest decline over 5 years | -76.97% | -65.00% | -11.97% |
Max Drawdown (10Y)Largest decline over 10 years | -96.59% | -89.96% | -6.63% |
Current DrawdownCurrent decline from peak | -99.92% | -99.04% | -0.88% |
Average DrawdownAverage peak-to-trough decline | -79.14% | -76.23% | -2.91% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 17.17% | 12.07% | +5.10% |
Volatility
URPIX vs. SOPIX - Volatility Comparison
The current volatility for ProFunds UltraBear Fund (URPIX) is 7.34%, while ProFunds Short NASDAQ-100 Fund (SOPIX) has a volatility of 7.82%. This indicates that URPIX experiences smaller price fluctuations and is considered to be less risky than SOPIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| URPIX | SOPIX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 7.34% | 7.82% | -0.48% |
Volatility (6M)Calculated over the trailing 6-month period | 20.09% | 15.21% | +4.88% |
Volatility (1Y)Calculated over the trailing 1-year period | 25.16% | 18.50% | +6.66% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 34.05% | 23.76% | +10.29% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 35.59% | 22.63% | +12.96% |
URPIX vs. SOPIX - Expense Ratio Comparison
Both URPIX and SOPIX have an expense ratio of 1.78%.
Dividends
URPIX vs. SOPIX - Dividend Comparison
URPIX's dividend yield for the trailing twelve months is around 3.27%, more than SOPIX's 2.50% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 |
|---|---|---|---|---|---|---|---|---|
SOPIX ProFunds Short NASDAQ-100 Fund | 2.50% | 2.14% | 0.00% | 6.71% | 0.00% | 0.00% | 0.00% | 0.29% |
URPIX ProFunds UltraBear Fund | 3.27% | 2.73% | 0.00% | 3.02% | 0.00% | 0.00% | 0.47% | 0.00% |
Frequently Asked Questions
With a correlation of 0.93, URPIX and SOPIX move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.
SOPIX has higher volatility (7.82%) compared to URPIX (7.34%). In terms of maximum drawdown, URPIX dropped -99.92% vs SOPIX's -99.07%.
URPIX currently has the higher Sharpe Ratio (-1.13 vs -1.14), 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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