PRILX vs. POGSX

Last updated Jul 14, 2026

PRILX (Parnassus Core Equity Institutional Shares) and POGSX (Pin Oak Equity) are both Large Cap Blend Equities funds. Over the past 10 years, PRILX returned 13.86%/yr vs 14.07%/yr for POGSX. Their correlation of 0.88 suggests significant overlap in exposure. PRILX charges 0.61%/yr vs 0.91%/yr for POGSX.

Performance

PRILX vs. POGSX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Parnassus Core Equity Institutional Shares (PRILX) and Pin Oak Equity (POGSX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, PRILX achieves a 9.32% return, which is significantly lower than POGSX's 19.88% return. Both investments have delivered pretty close results over the past 10 years, with PRILX having a 13.86% annualized return and POGSX not far ahead at 14.07%.

PRILX

• 1D: 0.64%
• 1M: 2.73%
• 6M: 5.98%
• YTD: 9.32%
• 1Y: 13.31%
• 3Y*: 16.64%
• 5Y*: 10.25%
• 10Y*: 13.86%

POGSX

• 1D: 0.21%
• 1M: 2.17%
• 6M: 16.30%
• YTD: 19.88%
• 1Y: 36.94%
• 3Y*: 27.26%
• 5Y*: 12.10%
• 10Y*: 14.07%

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

PRILX vs. POGSX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
PRILX Parnassus Core Equity Institutional Shares	9.32%	11.91%	18.81%	25.25%	-18.47%	27.86%	21.50%	30.95%	-0.06%	16.87%
POGSX Pin Oak Equity	19.88%	27.41%	18.99%	27.16%	-25.10%	21.42%	10.60%	27.72%	-6.15%	15.14%

Correlation

The correlation between PRILX and POGSX is 0.83, 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	0.83
Correlation (3Y) Calculated over the trailing 3-year period	0.85
Correlation (5Y) Calculated over the trailing 5-year period	0.89
Correlation (10Y) Calculated over the trailing 10-year period	0.88
Correlation (All Time) Calculated using the full available price history since Apr 28, 2006	0.88

The correlation between PRILX and POGSX has been stable across timeframes, ranging from 0.83 to 0.89 - a consistent structural relationship.

Return for Risk

PRILX vs. POGSX — Risk / Return Rank

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

PRILX

PRILX Risk / Return Rank: 22
PRILX Sharpe Ratio Rank: 23
PRILX Sortino Ratio Rank: 23
PRILX Omega Ratio Rank: 22
PRILX Calmar Ratio Rank: 18
PRILX Martin Ratio Rank: 24

POGSX

POGSX Risk / Return Rank: 92
POGSX Sharpe Ratio Rank: 88
POGSX Sortino Ratio Rank: 93
POGSX Omega Ratio Rank: 88
POGSX Calmar Ratio Rank: 95
POGSX Martin Ratio Rank: 94

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.

PRILX vs. POGSX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Parnassus Core Equity Institutional Shares (PRILX) and Pin Oak Equity (POGSX). 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.

	PRILX	POGSX	Difference
Sharpe ratio: Return per unit of total volatility	1.03	2.36	-1.33
Sortino ratio: Return per unit of downside risk	1.50	3.98	-2.48
Omega ratio: Gain probability vs. loss probability	1.18	1.50	-0.31
Calmar ratio: Return relative to maximum drawdown	1.11	4.52	-3.40
Martin ratio: Return relative to average drawdown	4.31	16.16	-11.85

PRILX vs. POGSX - Sharpe Ratio Comparison

The current PRILX Sharpe Ratio is 1.03, which is lower than the POGSX Sharpe Ratio of 2.36. The chart below compares the historical Sharpe Ratios of PRILX and POGSX, 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

PRILX vs. POGSX - Drawdown Comparison

The maximum PRILX drawdown since its inception was -42.00%, smaller than the maximum POGSX drawdown of -89.46%. Use the drawdown chart below to compare losses from any high point for PRILX and POGSX.

Drawdown Indicators

	PRILX	POGSX	Difference
Max Drawdown Largest peak-to-trough decline	-42.00%	-89.46%	+47.46%
Max Drawdown (1Y) Largest decline over 1 year	-11.61%	-8.03%	-3.58%
Max Drawdown (3Y) Largest decline over 3 years	-16.28%	-15.76%	-0.52%
Max Drawdown (5Y) Largest decline over 5 years	-26.18%	-29.81%	+3.63%
Max Drawdown (10Y) Largest decline over 10 years	-30.02%	-33.05%	+3.03%
Current Drawdown Current decline from peak	-0.36%	0.00%	-0.36%
Average Drawdown Average peak-to-trough decline	-4.63%	-36.61%	+31.98%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.99%	2.24%	+0.75%

Volatility

PRILX vs. POGSX - Volatility Comparison

Parnassus Core Equity Institutional Shares (PRILX) has a higher volatility of 4.76% compared to Pin Oak Equity (POGSX) at 3.84%. This indicates that PRILX's price experiences larger fluctuations and is considered to be riskier than POGSX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	PRILX	POGSX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.76%	3.84%	+0.92%
Volatility (6M) Calculated over the trailing 6-month period	10.21%	12.90%	-2.69%
Volatility (1Y) Calculated over the trailing 1-year period	12.54%	15.38%	-2.84%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.36%	17.80%	-1.44%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.23%	18.42%	-1.19%

PRILX vs. POGSX - Expense Ratio Comparison

PRILX has a 0.61% expense ratio, which is lower than POGSX's 0.91% expense ratio.

Dividends

PRILX vs. POGSX - Dividend Comparison

PRILX's dividend yield for the trailing twelve months is around 17.50%, more than POGSX's 15.85% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
POGSX Pin Oak Equity	15.85%	8.85%	17.87%	8.21%	0.15%	10.93%	4.60%	3.22%	2.94%	1.79%	2.03%	3.83%
PRILX Parnassus Core Equity Institutional Shares	17.50%	19.16%	10.17%	6.18%	10.34%	7.94%	6.04%	8.23%	9.89%	7.37%	3.99%	9.84%

Frequently Asked Questions

Can I hold both PRILX and POGSX in my portfolio?

PRILX and POGSX have a correlation of 0.83, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, PRILX or POGSX?

PRILX has higher volatility (4.76%) compared to POGSX (3.84%). In terms of maximum drawdown, PRILX dropped -42.00% vs POGSX's -89.46%.

Which has better risk-adjusted returns?

POGSX currently has the higher Sharpe Ratio (2.36 vs 1.03), 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.