RYHIX vs. PDFDX

Last updated Aug 5, 2026

RYHIX (Rydex Health Care Fund) and PDFDX (Perkins Discovery Fund) are both Health & Biotech Equities funds. Their 0.55 correlation means they have sometimes moved together and sometimes differently. RYHIX charges 1.35%/yr vs 2.50%/yr for PDFDX.

Performance

RYHIX vs. PDFDX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Rydex Health Care Fund (RYHIX) and Perkins Discovery Fund (PDFDX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

RYHIX

• 1D: 0.30%
• 1M: -1.53%
• 6M: 7.46%
• YTD: 7.73%
• 1Y: 24.65%
• 3Y*: 9.09%
• 5Y*: 3.22%
• 10Y*: 8.66%
• ALL TIME*: 7.48%

PDFDX

• 1D: —
• 1M: —
• 6M: —
• YTD: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —
• ALL TIME*: —

*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)
RYHIX Rydex Health Care Fund	$0.00	$0.00	$0.00

RYHIX vs. PDFDX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
RYHIX Rydex Health Care Fund	7.73%	14.42%	0.61%	5.84%	-11.59%	19.27%	18.84%	22.77%	1.56%	23.48%
PDFDX Perkins Discovery Fund	4.76%	9.94%	19.19%	10.77%	-39.93%	2.11%	62.16%	15.01%	22.19%	11.58%

Correlation

The correlation between RYHIX and PDFDX is 0.51, 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.	0.51
Correlation (3Y) Balances recent behavior with more history.	0.58
Correlation (5Y) Shows whether the relationship held over a longer period.	0.66
Correlation (10Y) Provides a long-term view across more market conditions.	0.67
Correlation (All Time) Calculated using the full available price history since Jan 4, 1999	0.55

The correlation between RYHIX and PDFDX shifts across timeframes, from 0.51 (1 year) to 0.67 (10 years), reflecting how their relationship changes across market environments.

Return for Risk

RYHIX vs. PDFDX — Risk / Return Rank

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

RYHIX

RYHIX Risk / Return Rank: 58
RYHIX Sharpe Ratio Rank: 64
RYHIX Sortino Ratio Rank: 72
RYHIX Omega Ratio Rank: 55
RYHIX Calmar Ratio Rank: 60
RYHIX Martin Ratio Rank: 39

PDFDX

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

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.

RYHIX vs. PDFDX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Rydex Health Care Fund (RYHIX) and Perkins Discovery Fund (PDFDX). 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.

	RYHIX	PDFDX	Difference
Sharpe ratio: Return per unit of total volatility	1.75	—	—
Sortino ratio: Return per unit of downside risk	2.65	—	—
Omega ratio: Gain probability vs. loss probability	1.30	—	—
Calmar ratio: Return relative to maximum drawdown	2.35	—	—
Martin ratio: Return relative to average drawdown	6.38	—	—

Drawdowns

Drawdown Indicators

	RYHIX	PDFDX	Difference
Max Drawdown Largest peak-to-trough decline	-41.27%	—	—
Max Drawdown (1Y) Largest decline over 1 year	-11.31%	—	—
Max Drawdown (3Y) Largest decline over 3 years	-17.46%	—	—
Max Drawdown (5Y) Largest decline over 5 years	-22.83%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-29.03%	—	—
Current Drawdown Current decline from peak	-1.94%	—	—
Average Drawdown Average peak-to-trough decline	-8.62%	—	—
Ulcer Index Depth and duration of drawdowns from previous peaks	4.15%	—	—

Volatility

Volatility by Period

	RYHIX	PDFDX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.41%	—	—
Volatility (6M) Calculated over the trailing 6-month period	11.71%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	15.23%	—	—
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.03%	—	—
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.65%	—	—

RYHIX vs. PDFDX - Expense Ratio Comparison

RYHIX has a 1.35% expense ratio, which is lower than PDFDX's 2.50% expense ratio.

Dividends

RYHIX vs. PDFDX - Dividend Comparison

RYHIX's dividend yield for the trailing twelve months is around 2.02%, less than PDFDX's 9.34% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
PDFDX Perkins Discovery Fund	9.34%	4.25%	0.00%	0.00%	1.78%	31.11%	1.71%	0.00%	0.58%	0.00%	0.00%	0.00%
RYHIX Rydex Health Care Fund	2.02%	2.18%	0.00%	0.00%	1.64%	3.19%	8.81%	0.00%	1.76%	9.17%	13.88%	6.39%

Frequently Asked Questions

Can I hold both RYHIX and PDFDX in my portfolio?

RYHIX and PDFDX have a correlation of 0.51, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.