RYILX vs. SOPIX

Last updated Aug 1, 2026

RYILX (Rydex Inverse High Yield Strategy Fund) and SOPIX (ProFunds Short NASDAQ-100 Fund) are both mutual funds - RYILX is a Inverse Bonds fund managed by Rydex Funds, while SOPIX is a Inverse Equities fund managed by ProFunds. Over the past 10 years, RYILX returned -2.64%/yr vs -19.61%/yr for SOPIX. Their 0.55 correlation means they have sometimes moved together and sometimes differently. RYILX charges 1.55%/yr vs 1.78%/yr for SOPIX.

Performance

RYILX vs. SOPIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Rydex Inverse High Yield Strategy Fund (RYILX) and ProFunds Short NASDAQ-100 Fund (SOPIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, RYILX achieves a 2.66% return, which is significantly higher than SOPIX's -9.87% return. Over the past 10 years, RYILX has outperformed SOPIX with an annualized return of -2.64%, while SOPIX has yielded a comparatively lower -19.61% annualized return.

RYILX

• 1D: -0.31%
• 1M: 1.08%
• 6M: 2.40%
• YTD: 2.66%
• 1Y: 0.76%
• 3Y*: -1.46%
• 5Y*: 0.20%
• 10Y*: -2.64%
• ALL TIME*: -6.51%

SOPIX

• 1D: -3.36%
• 1M: 4.31%
• 6M: -9.07%
• YTD: -9.87%
• 1Y: -17.52%
• 3Y*: -17.93%
• 5Y*: -14.03%
• 10Y*: -19.61%
• ALL TIME*: -17.47%

*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)
RYILX Rydex Inverse High Yield Strategy Fund	$0.00	$0.00	$0.00
SOPIX ProFunds Short NASDAQ-100 Fund	$0.00	$0.00	$0.00

RYILX vs. SOPIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
RYILX Rydex Inverse High Yield Strategy Fund	2.66%	-4.36%	0.83%	-5.00%	8.71%	-3.58%	-5.89%	-11.11%	1.00%	-5.87%
SOPIX ProFunds Short NASDAQ-100 Fund	-9.87%	-15.80%	-23.82%	-31.85%	34.73%	-25.69%	-42.92%	-28.29%	-3.07%	-25.24%

Correlation

The correlation between RYILX and SOPIX is 0.55, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.55
Correlation (3Y) Balances recent behavior with more history.	0.54
Correlation (5Y) Shows whether the relationship held over a longer period.	0.61
Correlation (10Y) Provides a long-term view across more market conditions.	0.59
Correlation (All Time) Calculated using the full available price history since Apr 16, 2007	0.55

The correlation between RYILX and SOPIX has been stable across timeframes, ranging from 0.54 to 0.61 - a consistent structural relationship.

Return for Risk

RYILX vs. SOPIX — Risk / Return Rank

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

RYILX

RYILX Risk / Return Rank: 5
RYILX Sharpe Ratio Rank: 6
RYILX Sortino Ratio Rank: 5
RYILX Omega Ratio Rank: 5
RYILX Calmar Ratio Rank: 6
RYILX Martin Ratio Rank: 5

SOPIX

SOPIX Risk / Return Rank: 1
SOPIX Sharpe Ratio Rank: 1
SOPIX Sortino Ratio Rank: 0
SOPIX Omega Ratio Rank: 1
SOPIX Calmar Ratio Rank: 1
SOPIX Martin Ratio Rank: 0

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.

RYILX vs. SOPIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Rydex Inverse High Yield Strategy Fund (RYILX) 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.

	RYILX	SOPIX	Difference
Sharpe ratio: Return per unit of total volatility	0.12	-0.80	+0.92
Sortino ratio: Return per unit of downside risk	0.21	-1.09	+1.30
Omega ratio: Gain probability vs. loss probability	1.03	0.88	+0.15
Calmar ratio: Return relative to maximum drawdown	0.15	-0.62	+0.78
Martin ratio: Return relative to average drawdown	0.31	-1.21	+1.52

RYILX vs. SOPIX - Sharpe Ratio Comparison

The current RYILX Sharpe Ratio is 0.12, which is higher than the SOPIX Sharpe Ratio of -0.80. The chart below compares the historical Sharpe Ratios of RYILX 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.

Drawdowns

RYILX vs. SOPIX - Drawdown Comparison

The maximum RYILX drawdown since its inception was -77.21%, smaller than the maximum SOPIX drawdown of -99.07%. Use the drawdown chart below to compare losses from any high point for RYILX and SOPIX.

Drawdown Indicators

	RYILX	SOPIX	Difference
Max Drawdown Largest peak-to-trough decline	-77.21%	-99.07%	+21.86%
Max Drawdown (1Y) Largest decline over 1 year	-4.01%	-24.87%	+20.86%
Max Drawdown (3Y) Largest decline over 3 years	-12.72%	-54.87%	+42.15%
Max Drawdown (5Y) Largest decline over 5 years	-15.44%	-65.00%	+49.56%
Max Drawdown (10Y) Largest decline over 10 years	-26.23%	-89.76%	+63.53%
Current Drawdown Current decline from peak	-76.53%	-98.99%	+22.46%
Average Drawdown Average peak-to-trough decline	-58.24%	-76.28%	+18.04%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.97%	12.79%	-10.82%

Volatility

RYILX vs. SOPIX - Volatility Comparison

The current volatility for Rydex Inverse High Yield Strategy Fund (RYILX) is 1.24%, while ProFunds Short NASDAQ-100 Fund (SOPIX) has a volatility of 6.90%. This indicates that RYILX 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.

Volatility by Period

	RYILX	SOPIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.24%	6.90%	-5.66%
Volatility (6M) Calculated over the trailing 6-month period	4.35%	15.93%	-11.58%
Volatility (1Y) Calculated over the trailing 1-year period	5.03%	19.30%	-14.27%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	7.57%	23.86%	-16.29%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	8.14%	22.69%	-14.55%

RYILX vs. SOPIX - Expense Ratio Comparison

RYILX has a 1.55% expense ratio, which is lower than SOPIX's 1.78% expense ratio.

Dividends

RYILX vs. SOPIX - Dividend Comparison

RYILX has not paid dividends to shareholders, while SOPIX's dividend yield for the trailing twelve months is around 2.38%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019
RYILX Rydex Inverse High Yield Strategy Fund	0.00%	0.00%	0.00%	0.00%	0.00%	2.45%	7.79%	0.00%
SOPIX ProFunds Short NASDAQ-100 Fund	2.38%	2.14%	0.00%	6.71%	0.00%	0.00%	0.00%	0.29%

Frequently Asked Questions

Can I hold both RYILX and SOPIX in my portfolio?

RYILX and SOPIX have a correlation of 0.55, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, RYILX or SOPIX?

SOPIX has higher volatility (6.90%) compared to RYILX (1.24%). In terms of maximum drawdown, RYILX dropped -77.21% vs SOPIX's -99.07%.

Which has better risk-adjusted returns?

RYILX currently has the higher Sharpe Ratio (0.12 vs -0.80), 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.