Billionaire Profile
David Duffield
Global Rank
#366

Image: Him121 at English Wikipedia | Public domain | via Wikimedia Commons

David Duffield

CEO, Business software
UNITED STATES
Real-Time Net Worth
$9.301B
Estimated based on Business software stock value as of March 6, 2026
+1.91% (24h)
Age
85
Source
Business software
Industry
Technology
Citizenship
UNITED STATES

Biography

David Duffield is an 85-year-old American billionaire businessman, and entrepreneur, renowned in the software industry. He is best known for co-founding PeopleSoft in 1987, which became the world's second-largest provider of enterprise resource planning software, and Workday, Inc. in 2005, a cloud-based human capital management and financial management software company. Duffield's career spans over five decades, marked by his innovative approach to user-friendly, relational database-driven systems. He has also founded other software companies, reflecting his continuous contributions to the business applications field. As of September 9, 2025, his net worth is estimated at $11 billion USD.

Fact Checked
Verified by Editorial Team
Live Data
Updated 3/6/2026

Wealth Over Time

In-Depth Profile

Early Life

David Arthur Duffield was born on September 21, 1940, in Cleveland, Ohio, but grew up in Ho-Ho-Kus, New Jersey. He graduated from Ridgewood High School in 1958. He earned a bachelor's degree in electrical engineering and an MBA from Cornell University. During his time at Cornell, he played in a band and was a pitcher on the baseball team.

Rise to Success

Duffield's career began at IBM in 1964 as a marketing representative and systems engineer. In 1968, he founded Information Associates, a company designing exam scheduling software for universities. He then established Integral Systems in 1972, which provided human resources management systems for higher education. In 1979, he co-founded Business Software Corporation, which sold human resource software to commercial enterprises. In 1987, Duffield founded PeopleSoft, which grew into the world's second-largest application software company before being acquired by Oracle in January 2005 for $10.7 billion. In March 2005, Duffield co-founded Workday, Inc. with Aneel Bhusri. He relinquished the co-CEO role in May 2014 and became chairman of the board, resigning as chairman in April 2021 and becoming chairman emeritus and ultimately CEO emeritus by Workday's board. In 2017, he founded Ridgeline, a cloud software firm for investment managers.

Key Business Strategies

Duffield's key strategies included identifying market needs and developing user-friendly software. He focused on relational database-driven systems that disrupted traditional mainframe-based enterprise software, prioritizing employee experience and scalability.

Philanthropy

David Duffield and his wife, Cheryl, are actively involved in philanthropy. Their giving extends to various causes, including animal welfare through Maddie's Fund, education, and support for military veterans. They've given over $500 million to Cornell University and over $900 million supporting animal welfare, education, and other causes. He has also donated to the College of Veterinary Medicine, where they have funded and named the Maddie's® Shelter Medicine Program and the Duffield Institute for Animal Behavior.

Career Milestones

1964

Began Career at IBM

Started as a marketing representative and systems engineer.

1987

Founded PeopleSoft

Served as CEO and chairman; PeopleSoft grew to be the world's second-largest application software company.

2005

Co-founded Workday

Co-founded Workday with Aneel Bhusri, serving as CEO and chairman.

2017

Founded Ridgeline

Founded Ridgeline, a cloud software firm for investment managers.

Philanthropy & Social Impact

Animal Welfare

Maddie's Fund

$303M

Dedicated to animal welfare causes

Education

Cornell University

$500M+

Funding education, including the naming of Duffield Hall

Veterans Affairs

Liberty Dogs

Undisclosed

Service dog training facility for veterans

Business Philosophy & Leadership

Notable Quotes

"If you truly listen to what people are saying, you'll find out what's on their mind that they want to be comfortable with. And then you'll be more effective in addressing their concerns."

Leadership Principles

Focus on Customer Needs

Prioritize understanding and addressing customer concerns.

Employee Empowerment

Create a culture that focuses on people, innovation, and integrity.