Parnassus Core Equity Fund (Investor)
Figures last verified October 31, 2026
Quality-focused large-cap investing with ESG screens; concentrated portfolio of wide-moat businesses.
Parnassus Core Equity is the awkward data point in the 'ESG costs returns' debate: screening out fossil fuels and weapons since long before ESG was a Bloomberg vertical, it nonetheless beat the S&P 500 over most extended windows in its first quarter-century — mostly because the quality-and-moat discipline does the work and the ethical screens just describe the durable businesses they wanted anyway.
The recent era is tougher: the fund has grown large, the quality factor went from undiscovered to crowded, and an 0.81% fee is a serious hurdle against an S&P 500 fund at 0.02%. For values-motivated investors it remains one of the most credible options — a real strategy with screens, not screens posing as a strategy. For purely returns-motivated investors, the index remains the percentage play, as the fund's own honest shareholder letters more or less concede.
Investors who want ESG screening with a record predating the ESG marketing boom.
PRBLX alternatives & comparable funds
If you’re weighing PRBLX against the field, these are the funds most investors line it up against — same job, different provider, slightly different terms.
| Fund | Family | Expense Ratio | Minimum |
|---|---|---|---|
| PRBLX — Parnassus Core Equity Fund (Investor) | Parnassus | 0.81% | $2,000 |
| FXAIX — Fidelity 500 Index Fund | Fidelity | 0.015% | $0 |
| VFIAX — Vanguard 500 Index Fund Admiral Shares | Vanguard | 0.04% | $3,000 |
| JENSX — Jensen Quality Growth Fund (Class J) | Jensen | 0.81% | $2,500 |
Frequently asked questions
What is the expense ratio of PRBLX?
PRBLX (Parnassus Core Equity Fund (Investor)) has an expense ratio of 0.81%, which works out to roughly $81 per year for every $10,000 invested. That is high relative to index alternatives, and it compounds against you every year, so the fund needs to outperform just to break even versus a cheaper option.
What is the minimum investment for PRBLX?
PRBLX requires a minimum initial investment of $2,000.
What does PRBLX invest in?
Quality-focused large-cap investing with ESG screens; concentrated portfolio of wide-moat businesses. It falls in the s&p 500 / large blend category and is an actively managed fund.
What are good alternatives to PRBLX?
The funds most often compared with PRBLX are FXAIX, VFIAX, JENSX — broadly similar exposure from different providers, with small differences in fee, minimum, and portability that usually come down to which brokerage holds your account.
Expense ratio and minimum for PRBLX drawn from Parnassus fund documentation; last verified October 31, 2026. Figures change — confirm against the official prospectus before investing. This review is editorial opinion, not investment advice.