PARWX vs. TWEIX

Last updated Aug 4, 2026

PARWX (Parnassus Endeavor Fund) and TWEIX (American Century Equity Income Fund) are both mutual funds - PARWX is a Large Cap Value Equities fund managed by Parnassus, while TWEIX is a Dividend fund managed by American Century. Over the past 10 years, PARWX returned 15.11%/yr vs 8.99%/yr for TWEIX. Their correlation of 0.82 means they have usually moved in the same direction. PARWX charges 0.88%/yr vs 0.94%/yr for TWEIX.

Performance

PARWX vs. TWEIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Parnassus Endeavor Fund (PARWX) and American Century Equity Income Fund (TWEIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, PARWX achieves a 17.13% return, which is significantly higher than TWEIX's 13.18% return. Over the past 10 years, PARWX has outperformed TWEIX with an annualized return of 15.11%, while TWEIX has yielded a comparatively lower 8.99% annualized return.

PARWX

• 1D: 0.82%
• 1M: 0.54%
• 6M: 11.27%
• YTD: 17.13%
• 1Y: 31.23%
• 3Y*: 17.82%
• 5Y*: 9.87%
• 10Y*: 15.11%
• ALL TIME*: 12.95%

TWEIX

• 1D: 0.00%
• 1M: 2.27%
• 6M: 8.31%
• YTD: 13.18%
• 1Y: 19.64%
• 3Y*: 11.74%
• 5Y*: 7.98%
• 10Y*: 8.99%
• ALL TIME*: 10.15%

*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)
PARWX Parnassus Endeavor Fund	$0.00	$0.00	$0.00
TWEIX American Century Equity Income Fund	$0.00	$0.00	$0.00

PARWX vs. TWEIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
PARWX Parnassus Endeavor Fund	17.13%	19.07%	12.03%	13.67%	-13.71%	31.09%	27.42%	33.28%	-13.58%	19.85%
TWEIX American Century Equity Income Fund	13.18%	11.84%	10.51%	3.92%	-3.06%	16.83%	1.10%	24.14%	-3.77%	13.35%

Correlation

The correlation between PARWX and TWEIX is 0.58, 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.	0.58
Correlation (3Y) Balances recent behavior with more history.	0.71
Correlation (5Y) Shows whether the relationship held over a longer period.	0.79
Correlation (10Y) Provides a long-term view across more market conditions.	0.78
Correlation (All Time) Calculated using the full available price history since Apr 29, 2005	0.82

Over the past year, the correlation between PARWX and TWEIX has dropped to 0.58 - well below their long-term average of 0.82, suggesting their price drivers have been diverging.

Return for Risk

PARWX vs. TWEIX — Risk / Return Rank

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

PARWX

PARWX Risk / Return Rank: 90
PARWX Sharpe Ratio Rank: 92
PARWX Sortino Ratio Rank: 89
PARWX Omega Ratio Rank: 85
PARWX Calmar Ratio Rank: 88
PARWX Martin Ratio Rank: 94

TWEIX

TWEIX Risk / Return Rank: 84
TWEIX Sharpe Ratio Rank: 89
TWEIX Sortino Ratio Rank: 90
TWEIX Omega Ratio Rank: 82
TWEIX Calmar Ratio Rank: 84
TWEIX Martin Ratio Rank: 76

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.

PARWX vs. TWEIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Parnassus Endeavor Fund (PARWX) and American Century Equity Income Fund (TWEIX). 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.

	PARWX	TWEIX	Difference
Sharpe ratio: Return per unit of total volatility	2.38	2.23	+0.15
Sortino ratio: Return per unit of downside risk	3.37	3.40	-0.03
Omega ratio: Gain probability vs. loss probability	1.42	1.39	+0.03
Calmar ratio: Return relative to maximum drawdown	3.30	2.96	+0.34
Martin ratio: Return relative to average drawdown	15.41	9.77	+5.64

PARWX vs. TWEIX - Sharpe Ratio Comparison

The current PARWX Sharpe Ratio is 2.38, which is comparable to the TWEIX Sharpe Ratio of 2.23. The chart below compares the historical Sharpe Ratios of PARWX and TWEIX, 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

PARWX vs. TWEIX - Drawdown Comparison

The maximum PARWX drawdown since its inception was -47.76%, which is greater than TWEIX's maximum drawdown of -39.30%. Use the drawdown chart below to compare losses from any high point for PARWX and TWEIX.

Drawdown Indicators

	PARWX	TWEIX	Difference
Max Drawdown Largest peak-to-trough decline	-47.76%	-39.30%	-8.46%
Max Drawdown (1Y) Largest decline over 1 year	-8.92%	-6.43%	-2.49%
Max Drawdown (3Y) Largest decline over 3 years	-18.02%	-10.16%	-7.86%
Max Drawdown (5Y) Largest decline over 5 years	-32.27%	-13.69%	-18.58%
Max Drawdown (10Y) Largest decline over 10 years	-37.21%	-32.82%	-4.39%
Current Drawdown Current decline from peak	0.00%	-0.63%	+0.63%
Average Drawdown Average peak-to-trough decline	-6.83%	-4.14%	-2.69%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.91%	1.94%	-0.03%

Volatility

PARWX vs. TWEIX - Volatility Comparison

Parnassus Endeavor Fund (PARWX) has a higher volatility of 3.49% compared to American Century Equity Income Fund (TWEIX) at 2.85%. This indicates that PARWX's price experiences larger fluctuations and is considered to be riskier than TWEIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	PARWX	TWEIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.49%	2.85%	+0.64%
Volatility (6M) Calculated over the trailing 6-month period	9.66%	6.56%	+3.10%
Volatility (1Y) Calculated over the trailing 1-year period	12.41%	8.58%	+3.83%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.73%	10.74%	+7.99%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	20.96%	13.32%	+7.64%

PARWX vs. TWEIX - Expense Ratio Comparison

PARWX has a 0.88% expense ratio, which is lower than TWEIX's 0.94% expense ratio.

Dividends

PARWX vs. TWEIX - Dividend Comparison

PARWX's dividend yield for the trailing twelve months is around 10.37%, more than TWEIX's 9.31% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
PARWX Parnassus Endeavor Fund	10.37%	12.14%	8.25%	1.76%	2.97%	16.75%	0.70%	0.79%	12.34%	6.32%	3.27%	10.26%
TWEIX American Century Equity Income Fund	9.31%	10.35%	11.51%	8.02%	8.76%	6.83%	2.00%	7.38%	8.79%	11.95%	7.88%	10.49%

Frequently Asked Questions

Can I hold both PARWX and TWEIX in my portfolio?

PARWX and TWEIX have a correlation of 0.58, 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 TWEIX?

PARWX has higher volatility (3.49%) compared to TWEIX (2.85%). In terms of maximum drawdown, PARWX dropped -47.76% vs TWEIX's -39.30%.

Which has better risk-adjusted returns?

PARWX currently has the higher Sharpe Ratio (2.38 vs 2.23), 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.