Billionaire Profile
Walter Kortschak
Global Rank
#2019

Image: Public domain | via Wikimedia Commons

Walter Kortschak

CEO, Kortschak Investments
US
Real-Time Net Worth
$1.7B
As of December 2025
Age
66
Source
Venture capital
Industry
finance-investments
Citizenship
US

Biography

Walter Kortschak is a prominent American venture capitalist and investor with a net worth of $1.7 billion. His wealth stems from his career in venture capital. Kortschak, 66, is the founder of Kortschak Investments. His career includes a long tenure at Summit Partners, where he was instrumental in the firm's growth and made successful investments in companies like E-Tek Dynamics and Xylan. He is known for his expertise in scaling innovative companies. Kortschak is a dual citizen of the US and Austria. He is a member of the Board of Trustees at Caltech and an active philanthropist, supporting educational programs.

Wealth Over Time

In-Depth Profile

Early Life

Walter Kortschak was born in Canada to an Austrian father and an American mother. He spent his childhood largely in Geneva, Switzerland, where his father worked for DuPont. Kortschak's international upbringing shaped his perspective and later influenced his investment strategies. Initially, he pursued a career in software engineering, earning degrees from Oregon State University and Caltech.

Rise to Success

Kortschak began his career in the computer graphics field, joining a startup in 1982. He later attended UCLA, where he was a Venture Fellow, gaining early experience in venture capital through an internship at Crosspoint Venture Partners. He joined Summit Partners in 1989, where he spent 26 years as an active partner, playing a key role in the firm's expansion and success. At Summit, he made significant investments, and he later founded Kortschak Investments in 2010. He served as Executive Chairman and Chief Investment Officer of SignalFire until 2023.

Key Business Strategies

Kortschak's investment philosophy is rooted in long-term value creation. He focuses on early-stage technology ventures, growth equity, and private equity. His career has spanned various sectors, including software, communications, and internet infrastructure. A key part of his approach involves disciplined management and technological foresight, seeking out innovative companies with high growth potential. He is known for identifying and nurturing promising startups, helping them navigate capital growth, acquisitions, and public listings.

Philanthropy

Beyond his investment work, Kortschak is actively involved in philanthropy. He and his wife, Marcia, founded the Kortschak Family Foundation in 2002. They established the Kortschak Scholars Program for Ph.D. students in computer science at Caltech and the USC Kortschak Center for Learning and Creativity. They also endowed the Division Chair in Film and Television Production at USC Cinematic Arts.

Career Milestones

1989

Joined Summit Partners

Began a long tenure at Summit Partners, a venture capital and private equity firm.

2005-2009

Named to Forbes Midas List

Recognized as one of the top venture capitalists.

2010

Founded Kortschak Investments

Established a firm focused on early-stage technology ventures.

2013

Launched SignalFire

Helped launch the first seed fund using a proprietary AI data platform.

Philanthropy & Social Impact

Education

Kortschak Scholars Program

Undisclosed

Supports Ph.D. students in computer science at Caltech.

Education

USC Kortschak Center for Learning and Creativity

$10M

A center for students with learning disabilities.

Education

Division Chair in Film and Television Production

Undisclosed

Endowed at USC Cinematic Arts.

Business Philosophy & Leadership

Notable Quotes

"Investing is about duration and persistence."

"I don't know a lot of folks in our industry who have done very early stage, growth equity and private equity and done it well, for this long, consistently"