What Does Parnassus Investments Do?

Total employees89
HeadquartersSan Francisco
Founded1984

Parnassus Investments is a pioneer in responsible investing, founded in 1984. The firm is dedicated to building wealth responsibly for its clients by investing in companies that meet rigorous environmental, social, and governance (ESG) criteria alongside strong financial fundamentals. Parnassus offers a range of actively managed equity and fixed income mutual funds, aiming to achieve attractive long-term returns while making a positive impact. Their investment philosophy emphasizes high-quality businesses with sustainable competitive advantages and ethical practices.

Where Is Parnassus Investments's Headquarters?

HQ Function

The headquarters serves as the central hub for all investment management, research, client services, operations, and strategic decision-making for the firm.

Notable Features:

Located in the prominent One Market Plaza complex, offering modern facilities and convenient access to the heart of San Francisco's financial community. The office space is designed to foster collaboration and focused research.

Work Culture:

Parnassus cultivates a principled, collaborative, and intellectually stimulating work environment. The culture is deeply rooted in its ESG investment philosophy, attracting mission-driven individuals who are passionate about responsible investing and long-term value creation. Emphasis is placed on thorough research, ethical conduct, and teamwork.

HQ Significance:

The San Francisco headquarters is significant as it's the sole operational center for this pioneering ESG investment firm, from which all fund management and company strategy emanate. Its location in a major U.S. financial hub underscores its standing in the investment community.

Values Reflected in HQ: The headquarters' professional environment reflects the firm's commitment to diligence, expertise, and responsible stewardship of client assets. The focus on a single, centralized location promotes cohesive teamwork and a unified approach to its ESG principles.

Location:

Parnassus Investments operates primarily from its headquarters in San Francisco, USA. While it does not maintain physical branch offices globally, its mutual funds may invest in companies across global markets that meet its ESG and financial criteria. The firm serves a diverse client base, including individuals and institutions, interested in responsible investing, extending its reach beyond its physical location through its investment activities and client relationships.

Street Address:

1 Market Street, Suite 1600

City:

San Francisco

State/Province:

CA

Country:

USA

Where Else Does Parnassus Investments Operate Around the World?

No additional office locations available.

Buying Intent Signals for Parnassus Investments

Highperformr Signals uncover buying intent and give you clear insights to target the right accounts at the right time — helping your sales, marketing, and GTM teams close more deals, faster.

Notable news
Hiring actively
Corporate Finance
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Corporate Finance
Corporate Finance
*Example signal, not calculated in real time

Who's Leading Parnassus Investments? Meet the Executive Team

As of April 2025, Parnassus Investments' leadership includes:

Benjamin E. Allen - Chief Executive Officer & Portfolio Manager
Todd C. Ahlsten - Chief Investment Officer & Portfolio Manager
Iyassu Essayas - President
Matthew D. Gershuny - General Counsel & Chief Compliance Officer
Marc Mahon - Chief Financial Officer
Marianne Hutchinson - Chief Marketing Officer

Who's Investing in Parnassus Investments?

Parnassus Investments has been backed by several prominent investors over the years, including:

100% Employee-Owned Firm

What Leadership Changes Has Parnassus Investments Seen Recently?

Hire1
Exits0

In the past year, Parnassus Investments has seen strategic additions to its team, reflecting continued growth and focus in specialized areas. No high-profile C-suite departures have been publicly announced during this specific period.

New Appointments:

George ZagToght, George ZagToght appointed as Director, Consultant Relations, bolstering the firm's engagement with the consultant community.

What Technology (Tech Stack) Is Used byParnassus Investments?

Discover the tools Parnassus Investments uses. Highperformr reveals the technologies powering your target accounts — helping your sales, marketing, and GTM teams prioritize smarter and close faster.

Parnassus Investments Email Formats and Examples

Parnassus Investments commonly uses the email format combining the first initial of an employee's name followed by their last name.

[first_initial][last]@parnassus.com

Format

jdoe@parnassus.com

Example

90%

Success rate

What's the Latest News About Parnassus Investments?

PR NewswireJanuary 25, 2024

Parnassus Investments Recognized by Investor's Business Daily as a Best Mutual Fund Family of 2024

Parnassus Investments announced its recognition by Investor's Business Daily (IBD) as one of the Best Mutual Fund Families of 2024. This marks the fourth consecutive year Parnassus has received this honor, highlighting its consistent performance in the U.S. Equity and ESG categories....more

Parnassus Investments BlogFebruary 14, 2024

Parnassus Investments: Navigating the AI Revolution: An Investor's Perspective

Parnassus portfolio managers discuss their approach to investing in the rapidly evolving field of Artificial Intelligence, emphasizing the importance of identifying companies with sustainable competitive advantages and responsible AI development practices within their ESG framework....more

CitywireMay 7, 2024

Parnassus CIO on the ESG metric that matters most

Parnassus Chief Investment Officer Todd Ahlsten discusses the firm's investment process and highlights key considerations within their ESG framework, offering insights into what metrics they prioritize when evaluating companies for long-term responsible investment....more

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