RYTPX vs. SOPIX

Last updated Jun 4, 2026

RYTPX (Rydex Inverse S&P 500 2x Strategy Fund) and SOPIX (ProFunds Short NASDAQ-100 Fund) are both Inverse Equities funds. Over the past 10 years, RYTPX returned -17.53%/yr vs -20.74%/yr for SOPIX. Their correlation of 0.86 suggests significant overlap in exposure. RYTPX charges 2.16%/yr vs 1.78%/yr for SOPIX.

Performance

RYTPX vs. SOPIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Rydex Inverse S&P 500 2x Strategy Fund (RYTPX) and ProFunds Short NASDAQ-100 Fund (SOPIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

The year-to-date returns for both investments are quite close, with RYTPX having a -17.63% return and SOPIX slightly higher at -16.96%. Over the past 10 years, RYTPX has outperformed SOPIX with an annualized return of -17.53%, while SOPIX has yielded a comparatively lower -20.74% annualized return.

RYTPX

• 1D: -0.24%
• 1M: -8.63%
• YTD: -17.63%
• 6M: -17.07%
• 1Y: -35.12%
• 3Y*: -29.11%
• 5Y*: -22.76%
• 10Y*: -17.53%

SOPIX

• 1D: -0.46%
• 1M: -9.63%
• YTD: -16.96%
• 6M: -15.51%
• 1Y: -27.05%
• 3Y*: -21.92%
• 5Y*: -17.02%
• 10Y*: -20.74%

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

RYTPX vs. SOPIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
RYTPX Rydex Inverse S&P 500 2x Strategy Fund	-17.63%	-27.24%	-29.24%	-31.96%	29.31%	-43.38%	-50.05%	-41.84%	4.42%	-32.54%
SOPIX ProFunds Short NASDAQ-100 Fund	-16.96%	-15.80%	-23.82%	-31.85%	34.73%	-25.69%	-42.92%	-28.29%	-3.07%	-25.24%

Correlation

The correlation between RYTPX 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	0.92
Correlation (5Y) Calculated over the trailing 5-year period	0.93
Correlation (10Y) Calculated over the trailing 10-year period	0.89
Correlation (All Time) Calculated using the full available price history since Jan 3, 2003	0.86

The correlation between RYTPX and SOPIX has been stable across timeframes, ranging from 0.86 to 0.93 - a consistent structural relationship.

Return for Risk

RYTPX vs. SOPIX — Risk / Return Rank

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

RYTPX

RYTPX Risk / Return Rank: 0
RYTPX Sharpe Ratio Rank: 0
RYTPX Sortino Ratio Rank: 0
RYTPX Omega Ratio Rank: 0
RYTPX Calmar Ratio Rank: 0
RYTPX Martin Ratio Rank: 0

SOPIX

SOPIX Risk / Return Rank: 0
SOPIX Sharpe Ratio Rank: 0
SOPIX Sortino Ratio Rank: 0
SOPIX Omega Ratio Rank: 0
SOPIX Calmar Ratio Rank: 0
SOPIX Martin Ratio Rank: 0

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.

RYTPX vs. SOPIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Rydex Inverse S&P 500 2x Strategy Fund (RYTPX) 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.

	RYTPX	SOPIX	Difference
Sharpe ratio: Return per unit of total volatility	-1.52	-1.73	+0.21
Sortino ratio: Return per unit of downside risk	-2.37	-2.60	+0.23
Omega ratio: Gain probability vs. loss probability	0.74	0.73	+0.02
Calmar ratio: Return relative to maximum drawdown	-1.00	-1.01	+0.01
Martin ratio: Return relative to average drawdown	-1.74	-2.19	+0.45
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

RYTPX vs. SOPIX - Sharpe Ratio Comparison

The current RYTPX Sharpe Ratio is -1.52, which is comparable to the SOPIX Sharpe Ratio of -1.73. The chart below compares the historical Sharpe Ratios of RYTPX and SOPIX, 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

	RYTPX	SOPIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	-1.52	-1.73	+0.21
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.68	-0.73	+0.05
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	-0.06	-0.92	+0.86
Sharpe Ratio (All Time) Calculated using the full available price history	-0.06	-0.81	+0.76

Drawdowns

RYTPX vs. SOPIX - Drawdown Comparison

The maximum RYTPX 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 RYTPX and SOPIX.

Drawdown Indicators

	RYTPX	SOPIX	Difference
Max Drawdown Largest peak-to-trough decline	-99.92%	-99.07%	-0.85%
Max Drawdown (1Y) Largest decline over 1 year	-35.82%	-27.45%	-8.37%
Max Drawdown (3Y) Largest decline over 3 years	-68.03%	-54.87%	-13.16%
Max Drawdown (5Y) Largest decline over 5 years	-75.66%	-65.00%	-10.66%
Max Drawdown (10Y) Largest decline over 10 years	-96.56%	-90.86%	-5.70%
Current Drawdown Current decline from peak	-99.92%	-99.07%	-0.85%
Average Drawdown Average peak-to-trough decline	-82.33%	-76.14%	-6.19%
Ulcer Index Depth and duration of drawdowns from previous peaks	20.65%	12.80%	+7.85%

Volatility

RYTPX vs. SOPIX - Volatility Comparison

Rydex Inverse S&P 500 2x Strategy Fund (RYTPX) has a higher volatility of 5.66% compared to ProFunds Short NASDAQ-100 Fund (SOPIX) at 4.53%. This indicates that RYTPX's price experiences larger fluctuations and is considered to be riskier than SOPIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RYTPX	SOPIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.66%	4.53%	+1.13%
Volatility (6M) Calculated over the trailing 6-month period	18.00%	12.16%	+5.84%
Volatility (1Y) Calculated over the trailing 1-year period	23.70%	16.01%	+7.69%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	33.74%	23.38%	+10.36%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	289.86%	22.49%	+267.37%

RYTPX vs. SOPIX - Expense Ratio Comparison

RYTPX has a 2.16% expense ratio, which is higher than SOPIX's 1.78% expense ratio.

Dividends

RYTPX vs. SOPIX - Dividend Comparison

RYTPX's dividend yield for the trailing twelve months is around 6.25%, more than SOPIX's 2.58% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019
RYTPX Rydex Inverse S&P 500 2x Strategy Fund	6.25%	5.15%	6.90%	3.35%	0.00%	0.00%	0.00%	0.23%
SOPIX ProFunds Short NASDAQ-100 Fund	2.58%	2.14%	0.00%	6.71%	0.00%	0.00%	0.00%	0.29%

Frequently Asked Questions

Can I hold both RYTPX and SOPIX in my portfolio?

With a correlation of 0.93, RYTPX 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.

Which is riskier, RYTPX or SOPIX?

RYTPX has higher volatility (5.66%) compared to SOPIX (4.53%). In terms of maximum drawdown, RYTPX dropped -99.92% vs SOPIX's -99.07%.

Which has better risk-adjusted returns?

RYTPX currently has the higher Sharpe Ratio (-1.52 vs -1.73), 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.