Parnassus Investments

Todd Ahlsten serves as Chief Investment Officer and lead portfolio manager of the flagship Parnassus Core Equity Fund. Benjamin Allen is CEO. Jerome Dodson, the founder, built the firm's initial investment framework and ESG methodology. The portfolio management team operates with a bottom-up, fundamental research approach across its fund lineup.

No. Parnassus Investments is a mutual fund manager focused exclusively on publicly traded U.S. equities. The firm does not operate private equity, venture capital, or hedge fund vehicles. Its entire platform consists of no-load mutual funds available to retail and institutional investors.

Parnassus targets publicly traded large-cap and mid-cap U.S. equities. The firm runs approximately half a dozen mutual funds spanning core, mid-cap, small-cap, and fixed income strategies. Its flagship Core Equity Fund concentrates on roughly 30 to 40 large-cap holdings with durable competitive moats and high ESG ratings.

Parnassus screens out companies deriving significant revenue from fossil fuel extraction, tobacco, weapons manufacturing, and nuclear power. The firm also avoids companies with poor records on labor relations, environmental violations, or corporate governance failures. These exclusions are hardwired into the investment mandate, not subject to portfolio manager discretion.

Parnassus conducts proprietary ESG research rather than outsourcing ratings to third-party vendors. Its internal ESG team performs company evaluations, engages management on sustainability issues, and publishes an annual ESG Impact Report detailing proxy-voting records. This in-house approach allows deeper, more nuanced assessments than external rating agencies typically provide.

Parnassus Investments is an asset manager—specifically, an SEC-registered mutual fund company. It is not a family office. The firm was founded by Jerome Dodson and historically operated with significant employee ownership, though a minority stake has been sold to an outside investor in recent years.

No. Parnassus does not participate in direct private deals, co-investments alongside private equity firms, or any form of private capital deployment. The firm invests solely through its publicly traded mutual fund products. Institutional allocators access Parnassus strategies by purchasing the funds directly or through intermediary platforms.