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Billionaire Profile
William Stone
Global Rank
#1212

William Stone

CEO, Software
Naples, Florida
Real-Time Net Worth
$3.56B
Estimated based on Software stock value as of September 10, 2026
-1.15% (24h)
Age
70
Source
Software
Industry
Technology
Citizenship
United States

Biography

William Stone, born in 1955, is a self-made billionaire, and the founder, chairman, and CEO of SS&C Technologies, a leading provider of software and services for the financial services and healthcare industries. His career began at KPMG before founding SS&C in 1986 with $20,000. Over the years, Stone has built SS&C into a global enterprise, navigating an IPO in 1996, taking the company private and then public again in 2010. His wealth stems from his success in the software industry, with a current estimated net worth of $3.4 billion.

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Data Updated
Sep 10, 2026
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Wealth Over Time

Net Worth History

YearNet Worth
2026$3.56B
2025$3.40B
2024$3.40B

Portfolio Holdings

SS&C Technologies

SS&C Technologies

SSNCtechnology
$2.30B
Holdings Value
Ownership
15%
Market Cap
$19.1B
Stock Price
$71.53
Hartford, Connecticut
250 employees
Founded 1986

In-Depth Profile

Early Life

William (Bill) Charles Stone was born and raised in Evansville, Indiana. He was born in 1955, and graduated from Reitz Memorial High School in 1973. In high school, Stone was an athlete and captain of Reitz Memorial's football team.

Rise to Success

After graduating high school, Stone attended Marquette University in Milwaukee, Wisconsin, where he received a Bachelor of Business Administration in 1977. He began his career at KPMG, a financial services consultancy and accounting firm. He eventually became a director at KPMG. In 1986, Stone, at the age of 30, left his job at KPMG to start SS&C Technologies with approximately $20,000 he had saved. The company was initially based out of his garage and launched with four employees. SS&C went public in 1996.

Key Business Strategies

SS&C Technologies provides software and services to the financial services and healthcare industries. Stone led SS&C through its initial public offering in 1996 and a second IPO in 2010. Stone has spearheaded over 60 acquisitions since 1995, including the $5.4 billion acquisition of DST Systems. The company's core value proposition has evolved into a multi-billion-dollar enterprise with deep integration into global capital markets infrastructure. SS&C's resilience through the dot-com crash and subsequent reprivatization and relisting underscores Stone's strategic agility.

Philanthropy

Stone has shown community involvement and philanthropy. In 2006, Stone funded the NJ Stone Baseball Field at Evansville Memorial High School, his alma mater. In May 2018, Stone and his wife Mary donated $15 million toward a multi-institutional initiative in downtown Evansville, the Stone Family Center for Health Sciences. In November 2018, Bill and Mary Stone helped fund the Patricia Browning Stone Sensory Playground at St. Vincent's Center for Children in Evansville. In December 2021, Bill and Mary Stone gifted $34.2 million to establish the Mary O'Daniel Stone and Bill Stone Center for Child and Adolescent Psychiatry at IU School of Medicine-Evansville.

Career Milestones

1977

Began Career

Began his career at KPMG, a financial services consultancy and accounting firm.

1986

Founded SS&C Technologies

Founded SS&C Technologies.

1996

SS&C IPO

Led SS&C Technologies through its initial public offering (IPO).

2005

SS&C went private

Stone took SS&C private

2010

Second IPO

SS&C went public a second time.

2018

Stone Family Center for Health Sciences

Donated $15 million toward a multi-institutional initiative in downtown Evansville, the Stone Family Center for Health Sciences.

Philanthropy & Social Impact

Education

NJ Stone Baseball Field

Undisclosed

Funded the NJ Stone Baseball Field at Evansville Memorial High School.

Healthcare

Stone Family Center for Health Sciences

$15B

Donated to a multi-institutional initiative in downtown Evansville.

Children's Health

Patricia Browning Stone Sensory Playground

Undisclosed

Helped fund the Patricia Browning Stone Sensory Playground at St. Vincent's Center for Children.

Healthcare

Mary O'Daniel Stone and Bill Stone Center

$34.2B

Gifted to establish the Mary O'Daniel Stone and Bill Stone Center for Child and Adolescent Psychiatry at IU School of Medicine-Evansville.

Billionaires Connected to William Stone

Peers in Technology

All Technology billionaires

Adjacent Global Ranks

Full global ranking

Frequently Asked Questions

What is William Stone's net worth in 2026?
As of 2026, William Stone's estimated net worth is $3.555 billion, ranking #1212 among the world's billionaires. The estimate is based on publicly available shareholding data and market prices, updated daily.
How did William Stone make their money?
William Stone's wealth primarily comes from Software, most notably through Software.
Where is William Stone from?
William Stone is from United States.
How old is William Stone?
William Stone is 70 years old.

Sources & References

  1. William Stone — Forbes profile Forbes