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PRBLX vs. VFFSX
Performance
Risk-Adjusted Performance
Dividends
Drawdowns
Volatility

Correlation

The correlation between PRBLX and VFFSX is 0.95, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.


-0.50.00.51.00.9

Performance

PRBLX vs. VFFSX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Parnassus Core Equity Fund (PRBLX) and Vanguard 500 Index Fund Institutional Select Shares (VFFSX). The values are adjusted to include any dividend payments, if applicable.

-5.00%0.00%5.00%10.00%AugustSeptemberOctoberNovemberDecember2025
-2.12%
9.61%
PRBLX
VFFSX

Key characteristics

Sharpe Ratio

PRBLX:

0.77

VFFSX:

2.19

Sortino Ratio

PRBLX:

1.01

VFFSX:

2.91

Omega Ratio

PRBLX:

1.16

VFFSX:

1.40

Calmar Ratio

PRBLX:

0.76

VFFSX:

3.35

Martin Ratio

PRBLX:

2.74

VFFSX:

13.94

Ulcer Index

PRBLX:

4.23%

VFFSX:

2.03%

Daily Std Dev

PRBLX:

14.98%

VFFSX:

12.85%

Max Drawdown

PRBLX:

-45.76%

VFFSX:

-52.30%

Current Drawdown

PRBLX:

-9.48%

VFFSX:

-0.53%

Returns By Period

In the year-to-date period, PRBLX achieves a 3.42% return, which is significantly higher than VFFSX's 2.91% return.


PRBLX

YTD

3.42%

1M

2.34%

6M

-2.12%

1Y

10.01%

5Y*

5.64%

10Y*

5.24%

VFFSX

YTD

2.91%

1M

2.09%

6M

9.60%

1Y

26.42%

5Y*

14.54%

10Y*

N/A

*Annualized

Compare stocks, funds, or ETFs

Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.


PRBLX vs. VFFSX - Expense Ratio Comparison

PRBLX has a 0.82% expense ratio, which is higher than VFFSX's 0.01% expense ratio.


PRBLX
Parnassus Core Equity Fund
Expense ratio chart for PRBLX: current value at 0.82% compared with the broader market ranging from 0.00% to 2.12%.0.50%1.00%1.50%2.00%0.82%
Expense ratio chart for VFFSX: current value at 0.01% compared with the broader market ranging from 0.00% to 2.12%.0.50%1.00%1.50%2.00%0.01%

Risk-Adjusted Performance

PRBLX vs. VFFSX — Risk-Adjusted Performance Rank

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

PRBLX
The Risk-Adjusted Performance Rank of PRBLX is 3636
Overall Rank
The Sharpe Ratio Rank of PRBLX is 3232
Sharpe Ratio Rank
The Sortino Ratio Rank of PRBLX is 2828
Sortino Ratio Rank
The Omega Ratio Rank of PRBLX is 3636
Omega Ratio Rank
The Calmar Ratio Rank of PRBLX is 5151
Calmar Ratio Rank
The Martin Ratio Rank of PRBLX is 3333
Martin Ratio Rank

VFFSX
The Risk-Adjusted Performance Rank of VFFSX is 8989
Overall Rank
The Sharpe Ratio Rank of VFFSX is 8989
Sharpe Ratio Rank
The Sortino Ratio Rank of VFFSX is 8787
Sortino Ratio Rank
The Omega Ratio Rank of VFFSX is 8787
Omega Ratio Rank
The Calmar Ratio Rank of VFFSX is 9191
Calmar Ratio Rank
The Martin Ratio Rank of VFFSX is 9292
Martin Ratio Rank
The risk-adjusted ranks indicate the investment's position relative to the market. A rank closer to 100 signifies top-performing investments, while a rank closer to 0 might suggest underperformance, based on the selected ratio. The values are calculated based on the past 12 months of returns.

PRBLX vs. VFFSX - Risk-Adjusted Performance Comparison

This table presents a comparison of risk-adjusted performance metrics for Parnassus Core Equity Fund (PRBLX) and Vanguard 500 Index Fund Institutional Select Shares (VFFSX). 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.


Sharpe ratio
The chart of Sharpe ratio for PRBLX, currently valued at 0.77, compared to the broader market-1.000.001.002.003.004.000.772.19
The chart of Sortino ratio for PRBLX, currently valued at 1.01, compared to the broader market0.005.0010.001.012.91
The chart of Omega ratio for PRBLX, currently valued at 1.16, compared to the broader market1.002.003.004.001.161.40
The chart of Calmar ratio for PRBLX, currently valued at 0.76, compared to the broader market0.005.0010.0015.0020.000.763.35
The chart of Martin ratio for PRBLX, currently valued at 2.74, compared to the broader market0.0020.0040.0060.0080.002.7413.94
PRBLX
VFFSX

The current PRBLX Sharpe Ratio is 0.77, which is lower than the VFFSX Sharpe Ratio of 2.19. The chart below compares the historical Sharpe Ratios of PRBLX and VFFSX, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.


Rolling 12-month Sharpe Ratio0.001.002.003.004.00AugustSeptemberOctoberNovemberDecember2025
0.77
2.19
PRBLX
VFFSX

Dividends

PRBLX vs. VFFSX - Dividend Comparison

PRBLX's dividend yield for the trailing twelve months is around 0.37%, less than VFFSX's 1.21% yield.


TTM20242023202220212020201920182017201620152014
PRBLX
Parnassus Core Equity Fund
0.37%0.38%0.57%0.49%0.83%0.57%0.73%1.14%1.30%1.02%2.17%1.46%
VFFSX
Vanguard 500 Index Fund Institutional Select Shares
1.21%1.24%1.46%1.70%1.26%1.56%1.90%2.09%1.81%1.08%0.00%0.00%

Drawdowns

PRBLX vs. VFFSX - Drawdown Comparison

The maximum PRBLX drawdown since its inception was -45.76%, smaller than the maximum VFFSX drawdown of -52.30%. Use the drawdown chart below to compare losses from any high point for PRBLX and VFFSX. For additional features, visit the drawdowns tool.


-14.00%-12.00%-10.00%-8.00%-6.00%-4.00%-2.00%0.00%AugustSeptemberOctoberNovemberDecember2025
-9.48%
-0.53%
PRBLX
VFFSX

Volatility

PRBLX vs. VFFSX - Volatility Comparison

The current volatility for Parnassus Core Equity Fund (PRBLX) is 4.84%, while Vanguard 500 Index Fund Institutional Select Shares (VFFSX) has a volatility of 5.14%. This indicates that PRBLX experiences smaller price fluctuations and is considered to be less risky than VFFSX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.


2.00%4.00%6.00%8.00%10.00%AugustSeptemberOctoberNovemberDecember2025
4.84%
5.14%
PRBLX
VFFSX
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Disclaimer

The information contained herein does not constitute investment advice and made available for educational purposes only. Prices and returns on equities are listed without consideration of fees, commissions, taxes, penalties, or interest payable due to purchasing, holding, or selling.

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