Parnassus Investments
Principles and Performance®
We seek to build wealth responsibly by investing in high-quality companies with both strong financial prospects and sustainable business practices.
Updates
Explore Our Funds
Our funds are deeply researched, high conviction portfolios. We construct concentrated portfolios that aim to outperform the benchmark over the long term and reduce the impact from down markets.
Our Investment Approach
The Parnassus investment approach is highly selective. We pursue high-quality companies that are likely to thrive in a healthy economy—and be resilient in a downturn—based on the four pillars below.
Increasing Relevancy
Companies with products or services that are gaining share in the overall economy.
Durable Competitive Advantages
Companies that can defend the business against new or existing competition.
Strong Management
Company leaders with a long-term focus, high integrity and alignment with shareholder interests.
Sustainable Business Practices
Companies actively planning for future opportunities and potential risks from multiple lenses.
Insights


The Case for Life Sciences Tools & Services Amid Cyclical Uncertainty
After a few years of weakness, we see the Life Science Tools & Services sector, foundational to biopharma R&D, rebounding as cyclical headwinds abate and innovation drives long-term growth.


Examining the Impact of Artificial Intelligence on Business Sectors
AI is reshaping business landscapes across sectors. Our investment team offers insights into how leading companies are integrating AI to achieve new competitive advantages and increase productivity.


AI in Focus: Unlocking Innovation, Growth, and Investment Insights
Andrew Choi, Portfolio Manager and Senior Analyst at Parnassus Investments, explores the transformative role of artificial intelligence in investment strategies.
