LeaderPortfolio
Stone
William Stone
Rank #1345
UNITED STATESTechnologySoftware

William Stone

Net Worth
$3.141B
-0.52% (24h)
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.

How to read William Stone's profile

Public net-worth figures are estimates. They combine observable inputs—typically listed equity, disclosed transactions, and market prices—with editorial judgment where filings are incomplete (for example, private holdings, debt, or cross-holdings). For William Stone, we anchor the narrative to Software and Software, then update the headline number as markets move. The chart on this page is meant to show trajectory, not a certified balance sheet.

When you see $3.141B alongside global rank #1345, interpret it as our best synthesis of widely cited ownership and price signals—not a claim about cash on hand. Estimates can diverge from other publishers because of different treatment of options, trusts, charitable vehicles, or illiquid assets. We document the general approach in methodology and welcome corrections via corrections.

Country (UNITED STATES) and career milestones on this page are curated for reader context; they should be verified against primary sources when used for research. Editorial metadata for this profile is refreshed on a rolling basis, with deeper audits at least annually (last noted cycle: 2026).

Looking for depth? When available, the dossier and timeline sections below add long-form context beyond the headline number—prioritize those modules when evaluating claims about strategy, controversies, or philanthropic commitments.

The Full Dossier

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 Timeline

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.

2010

Second IPO

SS&C went public a second time.

2005

SS&C went private

Stone took SS&C private

1996

SS&C IPO

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

1986

Founded SS&C Technologies

Founded SS&C Technologies.

1977

Began Career

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

Philanthropic Impact

EducationUndisclosed

NJ Stone Baseball Field

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

Healthcare$15B

Stone Family Center for Health Sciences

Donated to a multi-institutional initiative in downtown Evansville.

Children's HealthUndisclosed

Patricia Browning Stone Sensory Playground

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

Healthcare$34.2B

Mary O'Daniel Stone and Bill Stone Center

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

Key Business Ventures & Holdings

CompanyStakeValue
SS&C Technologies15.00%$2.3M

Net Worth History

In-Depth Analysis

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.

Data Sources & Methodology

Figures for William Stone are synthesized from the sources below and cross-checked against our net worth methodology. Estimates may lag market moves; see corrections to report discrepancies.