POGRX vs. RYGRX

Last updated Jun 23, 2026

POGRX (PrimeCap Odyssey Growth Fund) and RYGRX (Rydex S&P 500 Pure Growth Fund) are both Large Cap Growth Equities funds. Over the past 10 years, POGRX returned 17.99%/yr vs 13.61%/yr for RYGRX. Their correlation of 0.90 suggests significant overlap in exposure. POGRX charges 0.65%/yr vs 2.26%/yr for RYGRX.

Performance

POGRX vs. RYGRX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in PrimeCap Odyssey Growth Fund (POGRX) and Rydex S&P 500 Pure Growth Fund (RYGRX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, POGRX achieves a 29.75% return, which is significantly lower than RYGRX's 33.25% return. Over the past 10 years, POGRX has outperformed RYGRX with an annualized return of 17.99%, while RYGRX has yielded a comparatively lower 13.61% annualized return.

POGRX

• 1D: 2.81%
• 1M: 7.74%
• YTD: 29.75%
• 6M: 27.90%
• 1Y: 67.31%
• 3Y*: 28.60%
• 5Y*: 16.63%
• 10Y*: 17.99%

RYGRX

• 1D: 2.67%
• 1M: 8.71%
• YTD: 33.25%
• 6M: 30.14%
• 1Y: 41.89%
• 3Y*: 25.56%
• 5Y*: 10.73%
• 10Y*: 13.61%

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

POGRX vs. RYGRX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
POGRX PrimeCap Odyssey Growth Fund	29.75%	32.99%	13.09%	23.85%	-14.61%	18.81%	17.05%	23.98%	-4.56%	32.07%
RYGRX Rydex S&P 500 Pure Growth Fund	33.25%	11.00%	25.73%	5.80%	-28.71%	26.61%	26.34%	34.13%	-6.28%	23.74%

Correlation

The correlation between POGRX and RYGRX is 0.84, 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	0.84
Correlation (3Y) Calculated over the trailing 3-year period	0.83
Correlation (5Y) Calculated over the trailing 5-year period	0.87
Correlation (10Y) Calculated over the trailing 10-year period	0.87
Correlation (All Time) Calculated using the full available price history since Jan 3, 2005	0.90

The correlation between POGRX and RYGRX has been stable across timeframes, ranging from 0.83 to 0.90 - a consistent structural relationship.

Return for Risk

POGRX vs. RYGRX — Risk / Return Rank

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

POGRX

POGRX Risk / Return Rank: 93
POGRX Sharpe Ratio Rank: 97
POGRX Sortino Ratio Rank: 93
POGRX Omega Ratio Rank: 90
POGRX Calmar Ratio Rank: 92
POGRX Martin Ratio Rank: 94

RYGRX

RYGRX Risk / Return Rank: 62
RYGRX Sharpe Ratio Rank: 52
RYGRX Sortino Ratio Rank: 47
RYGRX Omega Ratio Rank: 47
RYGRX Calmar Ratio Rank: 85
RYGRX Martin Ratio Rank: 81

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.

POGRX vs. RYGRX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for PrimeCap Odyssey Growth Fund (POGRX) and Rydex S&P 500 Pure Growth Fund (RYGRX). 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.

	POGRX	RYGRX	Difference
Sharpe ratio: Return per unit of total volatility	3.42	1.97	+1.46
Sortino ratio: Return per unit of downside risk	4.43	2.66	+1.78
Omega ratio: Gain probability vs. loss probability	1.60	1.34	+0.26
Calmar ratio: Return relative to maximum drawdown	4.63	3.79	+0.84
Martin ratio: Return relative to average drawdown	19.52	14.10	+5.42

POGRX vs. RYGRX - Sharpe Ratio Comparison

The current POGRX Sharpe Ratio is 3.42, which is higher than the RYGRX Sharpe Ratio of 1.97. The chart below compares the historical Sharpe Ratios of POGRX and RYGRX, 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

POGRX vs. RYGRX - Drawdown Comparison

The maximum POGRX drawdown since its inception was -51.63%, roughly equal to the maximum RYGRX drawdown of -54.22%. Use the drawdown chart below to compare losses from any high point for POGRX and RYGRX.

Drawdown Indicators

	POGRX	RYGRX	Difference
Max Drawdown Largest peak-to-trough decline	-51.63%	-54.22%	+2.59%
Max Drawdown (1Y) Largest decline over 1 year	-14.40%	-11.17%	-3.23%
Max Drawdown (3Y) Largest decline over 3 years	-22.13%	-24.95%	+2.82%
Max Drawdown (5Y) Largest decline over 5 years	-26.85%	-36.57%	+9.72%
Max Drawdown (10Y) Largest decline over 10 years	-35.29%	-36.63%	+1.34%
Current Drawdown Current decline from peak	0.00%	-0.17%	+0.17%
Average Drawdown Average peak-to-trough decline	-7.12%	-9.39%	+2.27%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.41%	2.99%	+0.42%

Volatility

POGRX vs. RYGRX - Volatility Comparison

The current volatility for PrimeCap Odyssey Growth Fund (POGRX) is 8.95%, while Rydex S&P 500 Pure Growth Fund (RYGRX) has a volatility of 9.93%. This indicates that POGRX experiences smaller price fluctuations and is considered to be less risky than RYGRX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	POGRX	RYGRX	Difference
Volatility (1M) Calculated over the trailing 1-month period	8.95%	9.93%	-0.98%
Volatility (6M) Calculated over the trailing 6-month period	16.45%	18.47%	-2.02%
Volatility (1Y) Calculated over the trailing 1-year period	19.47%	21.50%	-2.03%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.89%	23.82%	-3.93%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	20.61%	23.04%	-2.43%

POGRX vs. RYGRX - Expense Ratio Comparison

POGRX has a 0.65% expense ratio, which is lower than RYGRX's 2.26% expense ratio.

Dividends

POGRX vs. RYGRX - Dividend Comparison

POGRX's dividend yield for the trailing twelve months is around 19.18%, more than RYGRX's 3.82% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
POGRX PrimeCap Odyssey Growth Fund	19.18%	24.89%	20.79%	13.28%	12.36%	13.68%	12.50%	5.13%	2.45%	1.54%	5.83%	1.29%
RYGRX Rydex S&P 500 Pure Growth Fund	3.82%	5.09%	0.00%	0.00%	0.00%	2.81%	4.43%	12.10%	7.15%	6.26%	0.05%	2.96%

Frequently Asked Questions

Can I hold both POGRX and RYGRX in my portfolio?

POGRX and RYGRX have a correlation of 0.84, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, POGRX or RYGRX?

RYGRX has higher volatility (9.93%) compared to POGRX (8.95%). In terms of maximum drawdown, POGRX dropped -51.63% vs RYGRX's -54.22%.

Which has better risk-adjusted returns?

POGRX currently has the higher Sharpe Ratio (3.42 vs 1.97), 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.