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Billionaire Profile
Irving Grousbeck & family
Global Rank
#1880

Irving Grousbeck & family

CEO, Telecommunication
REAL city
Real-Time Net Worth
$2.23B
Estimated based on Telecommunication stock value as of September 10, 2026
0% (24h)
Age
91
Source
Telecommunication, sports
Industry
Sports
Citizenship
United States

Biography

Irving Grousbeck, born in 1934, is an American entrepreneur and professor at Stanford Graduate School of Business. He is known for co-founding Continental Cablevision (later Media One) in 1964, a major player in the cable industry. His career also includes a significant role in the sports world, as he co-owned the Boston Celtics NBA franchise from 2002 until its sale in 2025. Grousbeck's wealth stems from his ventures in telecommunications and sports. He earned his MBA from Harvard University and has taught entrepreneurship at Stanford, mentoring generations of students. His acquisition of the Boston Celtics for $360 million in 2002, which the team was valued at $6 billion in 2024. His family sold their majority stake in the team in 2025 for $6.1 billion.

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Data Updated
Sep 10, 2026
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Wealth Over Time

Net Worth History

YearNet Worth
2026$2.23B
2025$2.20B
2024$2.20B

Portfolio Holdings

Boston Celtics

Boston Celtics

sports
Boston, Massachusetts
512 employees
Founded 1946

In-Depth Profile

Early Life and Education

Harold Irving "Irv" Grousbeck was born on July 20, 1934, in Northampton, Massachusetts. He attended Deerfield Academy before earning a Bachelor of Arts degree from Amherst College in 1956, where he majored in economics. He furthered his education at Harvard Business School, receiving a Master of Business Administration in 1960. In 2000, Amherst College awarded Grousbeck an honorary Doctor of Humane Letters.

Rise to Success

Grousbeck's business career began with early experiences at Procter & Gamble and Arthur Young. However, his entrepreneurial spirit led him to co-found Continental Cablevision in 1964, where he served as president until 1980 and chairman until 1985. Under his leadership, Continental Cablevision expanded significantly, becoming a key figure in the U.S. cable industry. The company was acquired by US West in 1996, later spun off as MediaOne in 1998.

Boston Celtics Ownership

In 2002, Grousbeck, along with his son Wycliffe Grousbeck and other investors, acquired the Boston Celtics for $360 million. This marked the first local ownership group since 1964. The franchise was sold in 2025 for a record $6.1 billion. Grousbeck served as the co-owner and provided financial backing from his telecommunications fortune. During his tenure, the team won two NBA championships, in 2008 and 2024.

Academic Career

Grousbeck taught at Harvard Business School as an instructor and lecturer before joining Stanford Graduate School of Business in 1985 as a visiting lecturer and later as a consulting professor. He co-founded Stanford's Center for Entrepreneurial Studies in 1996, focusing his teaching on entrepreneurship and management, drawing from his extensive entrepreneurial experience.

Philanthropy

Grousbeck's philanthropy has included board positions with the William and Flora Hewlett Foundation and Children's Hospital Boston. He has also served on the boards of Newton-Wellesley Hospital, the New England Eye Bank, and Menlo School.

Career Milestones

1964

Cofounded Continental Cablevision

Co-founded Continental Cablevision, a major cable television provider (later Media One).

1985

Joined Stanford GSB

Became a visiting lecturer at Stanford Graduate School of Business, later becoming a consulting professor.

2002

Acquired Boston Celtics

Co-acquired the Boston Celtics NBA franchise with Wycliffe Grousbeck and other investors.

2024

Won NBA Championship

The Boston Celtics won the NBA Championship.

2025

Sold Boston Celtics

Sold the Boston Celtics franchise.

Philanthropy & Social Impact

Education and Healthcare

Various Non-Profit Boards

$XB

Served on boards of William and Flora Hewlett Foundation, Children's Hospital Boston, Newton-Wellesley Hospital, the New England Eye Bank, and Menlo School.

Controversies & Challenges

2024

Financial Dispute

Financial disagreements within the Grousbeck family led to the sale of the Boston Celtics.

Billionaires Connected to Irving Grousbeck & family

Peers in Sports

All Sports billionaires

Richest in United States

All billionaires from United States

Adjacent Global Ranks

Full global ranking

Frequently Asked Questions

What is Irving Grousbeck & family's net worth in 2026?
As of 2026, Irving Grousbeck & family's estimated net worth is $2.229 billion, ranking #1880 among the world's billionaires. The estimate is based on publicly available shareholding data and market prices, updated daily.
How did Irving Grousbeck & family make their money?
Irving Grousbeck & family's wealth primarily comes from Telecommunication, sports, most notably through Telecommunication.
Where is Irving Grousbeck & family from?
Irving Grousbeck & family is from United States.
How old is Irving Grousbeck & family?
Irving Grousbeck & family is 91 years old.

Sources & References

Citations for this profile have not been published yet. Net worth figures here are estimates and should not be treated as verified. See our methodology for how these estimates are produced, or report a correction.