RYOIX vs. RYURX

Last updated Jul 14, 2026

RYOIX (Rydex Biotechnology Fund) and RYURX (Rydex Inverse S&P 500 Strategy Fund) are both mutual funds - RYOIX is a Health & Biotech Equities fund managed by Rydex Funds, while RYURX is a Inverse Equities fund managed by Rydex Funds. Over the past 10 years, RYOIX returned 10.29%/yr vs -12.74%/yr for RYURX. At a correlation of -0.66, they often move in opposite directions. RYOIX charges 1.36%/yr vs 1.49%/yr for RYURX.

Performance

RYOIX vs. RYURX - Performance Comparison

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

Returns By Period

In the year-to-date period, RYOIX achieves a 19.63% return, which is significantly higher than RYURX's -8.00% return. Over the past 10 years, RYOIX has outperformed RYURX with an annualized return of 10.29%, while RYURX has yielded a comparatively lower -12.74% annualized return.

RYOIX

• 1D: -2.73%
• 1M: 11.04%
• 6M: 17.79%
• YTD: 19.63%
• 1Y: 52.63%
• 3Y*: 18.96%
• 5Y*: 6.30%
• 10Y*: 10.29%

RYURX

• 1D: -0.38%
• 1M: -1.59%
• 6M: -6.41%
• YTD: -8.00%
• 1Y: -13.80%
• 3Y*: -11.96%
• 5Y*: -8.52%
• 10Y*: -12.74%

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

RYOIX vs. RYURX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
RYOIX Rydex Biotechnology Fund	19.63%	30.62%	-0.95%	6.06%	-13.04%	2.05%	21.94%	30.69%	-8.94%	29.68%
RYURX Rydex Inverse S&P 500 Strategy Fund	-8.00%	-11.41%	-13.04%	-14.56%	17.56%	-24.19%	-24.90%	-22.65%	4.33%	-17.38%

Correlation

The correlation between RYOIX and RYURX is -0.42, 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	-0.42
Correlation (3Y) Calculated over the trailing 3-year period	-0.52
Correlation (5Y) Calculated over the trailing 5-year period	-0.60
Correlation (10Y) Calculated over the trailing 10-year period	-0.62
Correlation (All Time) Calculated using the full available price history since Jan 4, 1999	-0.66

Over the past year, the inverse relationship between RYOIX and RYURX has weakened: their correlation has moved from -0.66 to -0.42, meaning they move in opposite directions less often than they have historically.

Return for Risk

RYOIX vs. RYURX — Risk / Return Rank

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

RYOIX

RYOIX Risk / Return Rank: 91
RYOIX Sharpe Ratio Rank: 92
RYOIX Sortino Ratio Rank: 88
RYOIX Omega Ratio Rank: 81
RYOIX Calmar Ratio Rank: 97
RYOIX Martin Ratio Rank: 97

RYURX

RYURX Risk / Return Rank: 0
RYURX Sharpe Ratio Rank: 0
RYURX Sortino Ratio Rank: 0
RYURX Omega Ratio Rank: 0
RYURX Calmar Ratio Rank: 0
RYURX 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.

RYOIX vs. RYURX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Rydex Biotechnology Fund (RYOIX) and Rydex Inverse S&P 500 Strategy Fund (RYURX). 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.

	RYOIX	RYURX	Difference
Sharpe ratio: Return per unit of total volatility	2.52	-1.08	+3.60
Sortino ratio: Return per unit of downside risk	3.52	-1.54	+5.06
Omega ratio: Gain probability vs. loss probability	1.41	0.83	+0.58
Calmar ratio: Return relative to maximum drawdown	6.00	-0.84	+6.84
Martin ratio: Return relative to average drawdown	21.84	-1.62	+23.46

RYOIX vs. RYURX - Sharpe Ratio Comparison

The current RYOIX Sharpe Ratio is 2.52, which is higher than the RYURX Sharpe Ratio of -1.08. The chart below compares the historical Sharpe Ratios of RYOIX and RYURX, 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

RYOIX vs. RYURX - Drawdown Comparison

The maximum RYOIX drawdown since its inception was -74.43%, smaller than the maximum RYURX drawdown of -96.72%. Use the drawdown chart below to compare losses from any high point for RYOIX and RYURX.

Drawdown Indicators

	RYOIX	RYURX	Difference
Max Drawdown Largest peak-to-trough decline	-74.43%	-96.72%	+22.29%
Max Drawdown (1Y) Largest decline over 1 year	-8.43%	-16.08%	+7.65%
Max Drawdown (3Y) Largest decline over 3 years	-23.47%	-38.48%	+15.01%
Max Drawdown (5Y) Largest decline over 5 years	-33.66%	-44.10%	+10.44%
Max Drawdown (10Y) Largest decline over 10 years	-33.66%	-75.17%	+41.51%
Current Drawdown Current decline from peak	-3.76%	-96.69%	+92.93%
Average Drawdown Average peak-to-trough decline	-27.54%	-69.00%	+41.46%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.32%	8.34%	-6.02%

Volatility

RYOIX vs. RYURX - Volatility Comparison

Rydex Biotechnology Fund (RYOIX) has a higher volatility of 6.37% compared to Rydex Inverse S&P 500 Strategy Fund (RYURX) at 4.27%. This indicates that RYOIX's price experiences larger fluctuations and is considered to be riskier than RYURX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	RYOIX	RYURX	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.37%	4.27%	+2.10%
Volatility (6M) Calculated over the trailing 6-month period	15.57%	9.91%	+5.66%
Volatility (1Y) Calculated over the trailing 1-year period	20.10%	12.46%	+7.64%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	21.34%	17.10%	+4.24%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	23.14%	18.08%	+5.06%

RYOIX vs. RYURX - Expense Ratio Comparison

RYOIX has a 1.36% expense ratio, which is lower than RYURX's 1.49% expense ratio.

Dividends

RYOIX vs. RYURX - Dividend Comparison

RYOIX's dividend yield for the trailing twelve months is around 10.51%, more than RYURX's 4.15% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
RYOIX Rydex Biotechnology Fund	10.51%	12.57%	14.61%	0.00%	1.29%	19.39%	7.28%	8.58%	14.11%	5.38%	0.00%	1.45%
RYURX Rydex Inverse S&P 500 Strategy Fund	4.15%	3.82%	6.78%	2.79%	0.00%	0.00%	0.42%	0.86%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both RYOIX and RYURX in my portfolio?

RYOIX and RYURX have a correlation of -0.42, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, RYOIX or RYURX?

RYOIX has higher volatility (6.37%) compared to RYURX (4.27%). In terms of maximum drawdown, RYOIX dropped -74.43% vs RYURX's -96.72%.

Which has better risk-adjusted returns?

RYOIX currently has the higher Sharpe Ratio (2.52 vs -1.08), 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.