PRBLX vs. AKREX

Last updated Jun 23, 2026

PRBLX (Parnassus Core Equity Fund) and AKREX (Akre Focus Fund Retail Class) are both mutual funds - PRBLX is a Large Cap Blend Equities fund managed by Parnassus, while AKREX is a Large Cap Growth Equities fund managed by Akre. Their correlation of 0.84 suggests significant overlap in exposure. PRBLX charges 0.82%/yr vs 1.30%/yr for AKREX.

Performance

PRBLX vs. AKREX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Parnassus Core Equity Fund (PRBLX) and Akre Focus Fund Retail Class (AKREX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

PRBLX

• 1D: 1.65%
• 1M: 2.48%
• YTD: 7.77%
• 6M: 7.55%
• 1Y: 16.44%
• 3Y*: 15.69%
• 5Y*: 10.64%
• 10Y*: 13.76%

AKREX

• 1D: —
• 1M: —
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

PRBLX vs. AKREX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
PRBLX Parnassus Core Equity Fund	7.77%	11.67%	18.58%	24.97%	-18.64%	27.59%	21.21%	30.68%	-0.30%	16.63%
AKREX Akre Focus Fund Retail Class	0.00%	1.72%	17.97%	28.39%	-22.95%	24.23%	20.37%	35.05%	5.25%	30.49%

Correlation

The correlation between PRBLX and AKREX is 0.28, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.28
Correlation (3Y) Calculated over the trailing 3-year period	0.66
Correlation (5Y) Calculated over the trailing 5-year period	0.80
Correlation (10Y) Calculated over the trailing 10-year period	0.82
Correlation (All Time) Calculated using the full available price history since Jan 4, 2010	0.84

Over the past year, the correlation between PRBLX and AKREX has dropped to 0.28 - well below their long-term average of 0.84, suggesting their price drivers have been diverging.

Return for Risk

PRBLX vs. AKREX — Risk / Return Rank

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

PRBLX

PRBLX Risk / Return Rank: 22
PRBLX Sharpe Ratio Rank: 24
PRBLX Sortino Ratio Rank: 23
PRBLX Omega Ratio Rank: 22
PRBLX Calmar Ratio Rank: 17
PRBLX Martin Ratio Rank: 24

AKREX

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

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.

PRBLX vs. AKREX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Parnassus Core Equity Fund (PRBLX) and Akre Focus Fund Retail Class (AKREX). 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.

	PRBLX	AKREX	Difference
Sharpe ratio: Return per unit of total volatility	1.31	—	—
Sortino ratio: Return per unit of downside risk	1.87	—	—
Omega ratio: Gain probability vs. loss probability	1.23	—	—
Calmar ratio: Return relative to maximum drawdown	1.39	—	—
Martin ratio: Return relative to average drawdown	5.38	—	—

Drawdowns

Drawdown Indicators

	PRBLX	AKREX	Difference
Max Drawdown Largest peak-to-trough decline	-42.20%	—	—
Max Drawdown (1Y) Largest decline over 1 year	-11.63%	—	—
Max Drawdown (3Y) Largest decline over 3 years	-16.31%	—	—
Max Drawdown (5Y) Largest decline over 5 years	-26.31%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-30.09%	—	—
Current Drawdown Current decline from peak	-0.13%	—	—
Average Drawdown Average peak-to-trough decline	-4.04%	—	—
Ulcer Index Depth and duration of drawdowns from previous peaks	2.98%	—	—

Volatility

Volatility by Period

	PRBLX	AKREX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.67%	—	—
Volatility (6M) Calculated over the trailing 6-month period	9.97%	—	—
Volatility (1Y) Calculated over the trailing 1-year period	12.35%	—	—
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.34%	—	—
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.31%	—	—

PRBLX vs. AKREX - Expense Ratio Comparison

PRBLX has a 0.82% expense ratio, which is lower than AKREX's 1.30% expense ratio.

Dividends

PRBLX vs. AKREX - Dividend Comparison

PRBLX's dividend yield for the trailing twelve months is around 17.66%, while AKREX has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AKREX Akre Focus Fund Retail Class	4.80%	4.80%	5.07%	3.56%	6.73%	3.65%	0.00%	2.99%	0.55%	0.62%	0.18%	0.00%
PRBLX Parnassus Core Equity Fund	17.66%	19.08%	10.00%	6.01%	10.13%	7.77%	5.87%	8.02%	9.64%	7.16%	3.80%	9.62%

Frequently Asked Questions

Can I hold both PRBLX and AKREX in my portfolio?

PRBLX and AKREX have a correlation of 0.28, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.