Principles and Performance®

At Parnassus Investments, we invest responsibly to build wealth for our clients. We select businesses that we believe have increasingly relevant products or services, sustainable competitive advantages and quality management teams for our high conviction portfolios. Every investment we make must meet rigorous fundamental and environmental, social and governance (ESG) criteria.


Learn more about the history of Parnassus Investments, our investment philosophy and how we strive to build wealth responsibly for long-term investors.