RYAIX vs. RYSOX

Last updated Jun 24, 2026

RYAIX (Rydex Inverse NASDAQ-100 Strategy Fund) and RYSOX (Rydex S&P 500 Fund) are both mutual funds - RYAIX is a Inverse Equities fund managed by Rydex Funds, while RYSOX is a S&P 500 fund tracking the S&P 500 Index. Over the past 10 years, RYAIX returned -19.63%/yr vs 13.84%/yr for RYSOX. At a correlation of -0.90, they often move in opposite directions. RYAIX charges 1.55%/yr vs 1.56%/yr for RYSOX.

Performance

RYAIX vs. RYSOX - Performance Comparison

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

Returns By Period

In the year-to-date period, RYAIX achieves a -16.95% return, which is significantly lower than RYSOX's 8.94% return. Over the past 10 years, RYAIX has underperformed RYSOX with an annualized return of -19.63%, while RYSOX has yielded a comparatively higher 13.84% annualized return.

RYAIX

• 1D: 0.21%
• 1M: -3.12%
• YTD: -16.95%
• 6M: -15.72%
• 1Y: -26.31%
• 3Y*: -18.55%
• 5Y*: -14.02%
• 10Y*: -19.63%

RYSOX

• 1D: -0.37%
• 1M: -0.02%
• YTD: 8.94%
• 6M: 7.91%
• 1Y: 23.49%
• 3Y*: 19.41%
• 5Y*: 11.75%
• 10Y*: 13.84%

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

RYAIX vs. RYSOX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
RYAIX Rydex Inverse NASDAQ-100 Strategy Fund	-16.95%	-15.63%	-15.64%	-31.71%	35.92%	-24.88%	-40.98%	-27.65%	-2.63%	-24.47%
RYSOX Rydex S&P 500 Fund	8.94%	15.93%	22.98%	24.15%	-19.47%	26.68%	16.25%	29.15%	-6.01%	19.53%

Correlation

The correlation between RYAIX and RYSOX is -0.94, meaning they tend to move in opposite directions. This is especially valuable for risk management - when one declines, the other has historically tended to hold steady or rise.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	-0.94
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 3, 2007	-0.90

The correlation between RYAIX and RYSOX has been stable across timeframes, ranging from -0.94 to -0.90 - a consistent structural relationship.

Return for Risk

RYAIX vs. RYSOX — Risk / Return Rank

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

RYAIX

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

RYSOX

RYSOX Risk / Return Rank: 55
RYSOX Sharpe Ratio Rank: 53
RYSOX Sortino Ratio Rank: 49
RYSOX Omega Ratio Rank: 51
RYSOX Calmar Ratio Rank: 55
RYSOX Martin Ratio Rank: 66

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.

RYAIX vs. RYSOX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Rydex Inverse NASDAQ-100 Strategy Fund (RYAIX) and Rydex S&P 500 Fund (RYSOX). 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.

	RYAIX	RYSOX	Difference
Sharpe ratio: Return per unit of total volatility	-1.53	1.99	-3.52
Sortino ratio: Return per unit of downside risk	-2.29	2.71	-5.00
Omega ratio: Gain probability vs. loss probability	0.75	1.36	-0.61
Calmar ratio: Return relative to maximum drawdown	-1.01	2.73	-3.75
Martin ratio: Return relative to average drawdown	-2.10	12.10	-14.20

RYAIX vs. RYSOX - Sharpe Ratio Comparison

The current RYAIX Sharpe Ratio is -1.53, which is lower than the RYSOX Sharpe Ratio of 1.99. The chart below compares the historical Sharpe Ratios of RYAIX and RYSOX, 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

RYAIX vs. RYSOX - Drawdown Comparison

The maximum RYAIX drawdown since its inception was -98.93%, which is greater than RYSOX's maximum drawdown of -55.24%. Use the drawdown chart below to compare losses from any high point for RYAIX and RYSOX.

Drawdown Indicators

	RYAIX	RYSOX	Difference
Max Drawdown Largest peak-to-trough decline	-98.93%	-55.24%	-43.69%
Max Drawdown (1Y) Largest decline over 1 year	-25.69%	-9.06%	-16.63%
Max Drawdown (3Y) Largest decline over 3 years	-50.13%	-18.94%	-31.19%
Max Drawdown (5Y) Largest decline over 5 years	-61.15%	-25.45%	-35.70%
Max Drawdown (10Y) Largest decline over 10 years	-89.04%	-34.05%	-54.99%
Current Drawdown Current decline from peak	-98.92%	-1.80%	-97.12%
Average Drawdown Average peak-to-trough decline	-73.33%	-8.25%	-65.08%
Ulcer Index Depth and duration of drawdowns from previous peaks	13.68%	2.04%	+11.64%

Volatility

RYAIX vs. RYSOX - Volatility Comparison

Rydex Inverse NASDAQ-100 Strategy Fund (RYAIX) has a higher volatility of 8.29% compared to Rydex S&P 500 Fund (RYSOX) at 4.67%. This indicates that RYAIX's price experiences larger fluctuations and is considered to be riskier than RYSOX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RYAIX	RYSOX	Difference
Volatility (1M) Calculated over the trailing 1-month period	8.29%	4.67%	+3.62%
Volatility (6M) Calculated over the trailing 6-month period	14.30%	9.81%	+4.49%
Volatility (1Y) Calculated over the trailing 1-year period	17.81%	12.48%	+5.33%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	23.10%	17.00%	+6.10%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	22.79%	18.14%	+4.65%

RYAIX vs. RYSOX - Expense Ratio Comparison

RYAIX has a 1.55% expense ratio, which is lower than RYSOX's 1.56% expense ratio.

Dividends

RYAIX vs. RYSOX - Dividend Comparison

RYAIX's dividend yield for the trailing twelve months is around 2.68%, more than RYSOX's 2.43% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
RYAIX Rydex Inverse NASDAQ-100 Strategy Fund	2.68%	2.23%	5.67%	4.81%	0.00%	0.00%	0.09%	0.72%	0.00%	0.00%	0.00%	0.00%
RYSOX Rydex S&P 500 Fund	2.43%	2.65%	1.08%	0.60%	1.17%	1.25%	13.42%	0.93%	1.69%	4.56%	0.84%	4.01%

Frequently Asked Questions

Can I hold both RYAIX and RYSOX in my portfolio?

RYAIX and RYSOX have a correlation of -0.94, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, RYAIX or RYSOX?

RYAIX has higher volatility (8.29%) compared to RYSOX (4.67%). In terms of maximum drawdown, RYAIX dropped -98.93% vs RYSOX's -55.24%.

Which has better risk-adjusted returns?

RYSOX currently has the higher Sharpe Ratio (1.99 vs -1.53), 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.