PARWX vs. BRK-B

Last updated Jun 5, 2026

PARWX (Parnassus Endeavor Fund) is Large Cap Value Equities fund managed by Parnassus, while BRK-B (Berkshire Hathaway Inc.) is a stock. Over the past 10 years, PARWX returned 14.57%/yr vs 12.93%/yr for BRK-B. A 0.59 correlation means they provide meaningful diversification when combined.

Performance

PARWX vs. BRK-B - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Parnassus Endeavor Fund (PARWX) and Berkshire Hathaway Inc. (BRK-B). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, PARWX achieves a 11.92% return, which is significantly higher than BRK-B's -4.78% return. Over the past 10 years, PARWX has outperformed BRK-B with an annualized return of 14.57%, while BRK-B has yielded a comparatively lower 12.93% annualized return.

PARWX

• 1D: -0.16%
• 1M: 2.66%
• YTD: 11.92%
• 6M: 13.12%
• 1Y: 32.58%
• 3Y*: 18.87%
• 5Y*: 8.86%
• 10Y*: 14.57%

BRK-B

• 1D: 0.69%
• 1M: 2.82%
• YTD: -4.78%
• 6M: -4.89%
• 1Y: -2.52%
• 3Y*: 13.36%
• 5Y*: 10.35%
• 10Y*: 12.93%

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

PARWX vs. BRK-B - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
PARWX Parnassus Endeavor Fund	11.92%	19.07%	12.03%	13.67%	-13.71%	31.09%	27.42%	33.28%	-13.58%	19.85%
BRK-B Berkshire Hathaway Inc.	-4.78%	10.89%	27.09%	15.46%	3.31%	28.95%	2.37%	10.93%	3.01%	21.62%

Correlation

The correlation between PARWX and BRK-B is 0.24, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.24
Correlation (3Y) Calculated over the trailing 3-year period	0.43
Correlation (5Y) Calculated over the trailing 5-year period	0.59
Correlation (10Y) Calculated over the trailing 10-year period	0.62
Correlation (All Time) Calculated using the full available price history since May 2, 2005	0.59

Over the past year, the correlation between PARWX and BRK-B has dropped to 0.24 - well below their long-term average of 0.59, suggesting their price drivers have been diverging.

Return for Risk

PARWX vs. BRK-B — Risk / Return Rank

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

PARWX

PARWX Risk / Return Rank: 82
PARWX Sharpe Ratio Rank: 85
PARWX Sortino Ratio Rank: 81
PARWX Omega Ratio Rank: 75
PARWX Calmar Ratio Rank: 81
PARWX Martin Ratio Rank: 89

BRK-B

BRK-B Risk / Return Rank: 31
BRK-B Sharpe Ratio Rank: 34
BRK-B Sortino Ratio Rank: 28
BRK-B Omega Ratio Rank: 27
BRK-B Calmar Ratio Rank: 33
BRK-B Martin Ratio Rank: 32

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.

PARWX vs. BRK-B - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Parnassus Endeavor Fund (PARWX) and Berkshire Hathaway Inc. (BRK-B). 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.

	PARWX	BRK-B	Difference
Sharpe ratio: Return per unit of total volatility	2.78	-0.18	+2.96
Sortino ratio: Return per unit of downside risk	3.93	-0.15	+4.07
Omega ratio: Gain probability vs. loss probability	1.50	0.98	+0.52
Calmar ratio: Return relative to maximum drawdown	3.70	-0.27	+3.96
Martin ratio: Return relative to average drawdown	17.40	-0.57	+17.96
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

PARWX vs. BRK-B - Sharpe Ratio Comparison

The current PARWX Sharpe Ratio is 2.78, which is higher than the BRK-B Sharpe Ratio of -0.18. The chart below compares the historical Sharpe Ratios of PARWX and BRK-B, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	PARWX	BRK-B	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.78	-0.18	+2.96
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.48	0.61	-0.13
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.70	0.67	+0.03
Sharpe Ratio (All Time) Calculated using the full available price history	0.60	0.48	+0.12

Drawdowns

PARWX vs. BRK-B - Drawdown Comparison

The maximum PARWX drawdown since its inception was -47.76%, smaller than the maximum BRK-B drawdown of -53.86%. Use the drawdown chart below to compare losses from any high point for PARWX and BRK-B.

Drawdown Indicators

	PARWX	BRK-B	Difference
Max Drawdown Largest peak-to-trough decline	-47.76%	-53.86%	+6.10%
Max Drawdown (1Y) Largest decline over 1 year	-8.92%	-9.42%	+0.50%
Max Drawdown (3Y) Largest decline over 3 years	-18.02%	-14.95%	-3.07%
Max Drawdown (5Y) Largest decline over 5 years	-32.27%	-26.58%	-5.69%
Max Drawdown (10Y) Largest decline over 10 years	-37.21%	-29.57%	-7.64%
Current Drawdown Current decline from peak	-0.16%	-11.33%	+11.17%
Average Drawdown Average peak-to-trough decline	-6.88%	-11.07%	+4.19%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.89%	4.46%	-2.57%

Volatility

PARWX vs. BRK-B - Volatility Comparison

The current volatility for Parnassus Endeavor Fund (PARWX) is 3.02%, while Berkshire Hathaway Inc. (BRK-B) has a volatility of 3.72%. This indicates that PARWX experiences smaller price fluctuations and is considered to be less risky than BRK-B based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	PARWX	BRK-B	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.02%	3.72%	-0.70%
Volatility (6M) Calculated over the trailing 6-month period	9.26%	10.70%	-1.44%
Volatility (1Y) Calculated over the trailing 1-year period	11.88%	14.32%	-2.44%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.70%	17.11%	+1.59%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	21.04%	19.43%	+1.61%

Dividends

PARWX vs. BRK-B - Dividend Comparison

PARWX's dividend yield for the trailing twelve months is around 10.85%, while BRK-B has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BRK-B Berkshire Hathaway Inc.	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
PARWX Parnassus Endeavor Fund	10.85%	12.14%	8.25%	1.76%	2.97%	16.75%	0.70%	0.79%	12.34%	6.32%	3.27%	10.26%

Frequently Asked Questions

Can I hold both PARWX and BRK-B in my portfolio?

PARWX and BRK-B have a correlation of 0.24, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, PARWX or BRK-B?

BRK-B has higher volatility (3.72%) compared to PARWX (3.02%). In terms of maximum drawdown, PARWX dropped -47.76% vs BRK-B's -53.86%.

Which has better risk-adjusted returns?

PARWX currently has the higher Sharpe Ratio (2.78 vs -0.18), 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.