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Billionaire Profile
Peter Kellogg
Global Rank
#685

Image: Peter McDermott  | CC BY-SA 2.0 | via Wikimedia Commons

Peter Kellogg

CEO, Spear, Leeds & Kellogg
Short Hills, New Jersey
Real-Time Net Worth
$6.08B
Estimated based on Spear, Leeds & Kellogg stock value as of September 10, 2026
-0.24% (24h)
Age
83
Source
Investments
Industry
finance-investments
Citizenship
United States

Biography

Peter R. Kellogg is an American billionaire businessman and philanthropist. He is best known for leading the Wall Street specialist trading firm Spear, Leeds & Kellogg, which he grew to handle over 10% of the New York Stock Exchange volume before selling it to Goldman Sachs in 2000. His wealth originates from this sale and subsequent investments. With a career spanning decades in the finance industry, Kellogg has demonstrated exceptional leadership and business acumen. He is also actively involved in philanthropy, primarily through the Peter R. and Cynthia K. Kellogg Foundation.

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Data Updated
Sep 10, 2026
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Wealth Over Time

Net Worth History

YearNet Worth
2026$6.08B
2025$5.40B
2024$3.40B
2022$3.50B

Portfolio Holdings

Mercer International Inc

Mercer International Inc

MERCPulp & Paper
$44.0B
Holdings Value
Ownership
36.53%
Nam Tai Property Inc

Nam Tai Property Inc

NTPReal Estate
$8.00B
Holdings Value
Ownership
3.25%

In-Depth Profile

Early Life

Peter R. Kellogg was born on September 5, 1942, in New Jersey, to James Crane Kellogg III, a stockbroker and senior partner in Spear, Leeds & Kellogg. His upbringing was centered around Wall Street, exposing him to the mechanics of stock trading from an early age. He attended the Berkshire School and later, Babson College, although he did not graduate.

Rise to Success

Kellogg's career began in 1967 when he joined Spear, Leeds & Kellogg, his father's specialist trading firm. Under his leadership, the firm became a dominant market maker. In 2000, Kellogg orchestrated the sale of Spear, Leeds & Kellogg to Goldman Sachs for $6.5 billion in cash and stock. Following the sale, he joined Goldman Sachs as a senior managing director and later became CEO of IAT Reinsurance Company until 2015.

Key Business Strategies

Kellogg's success is rooted in his strategic leadership and ability to navigate the complexities of the financial markets. His focus on specialist trading and strategic acquisitions, particularly the sale of Spear, Leeds & Kellogg, significantly contributed to his wealth. Post-sale, he maintained concentrated holdings in sectors like reinsurance to preserve capital and compound returns.

Philanthropy

Peter Kellogg conducts philanthropy through the Peter R. and Cynthia K. Kellogg Foundation, established in 1983. The foundation supports youth education and competitive sports programs. A significant portion of funding has gone to Berkshire School, where he graduated. The Kellogg's also purchased and renovated the John F. Peto Studio Museum in Island Heights, NJ.

Career Milestones

1967

Joined Spear, Leeds & Kellogg

Joined his father's firm, Spear, Leeds & Kellogg.

1980s

Led Spear, Leeds & Kellogg

Led Spear, Leeds & Kellogg, growing it to handle over 10% of the New York Stock Exchange volume.

2000

Sold Spear, Leeds & Kellogg to Goldman Sachs

Sold the firm to Goldman Sachs for $6.5 billion.

2000-2015

CEO of IAT Reinsurance Company

Served as CEO of IAT Reinsurance Company.

Philanthropy & Social Impact

Education

Berkshire School

$46M+

Supported Berkshire School through the Kellogg Foundation, including facilities, scholarships, and program enhancements.

Sports

US Olympic Ski and Snowboarding Teams

$4M+

Donations to the U.S. Olympic ski and snowboarding teams.

Arts and Culture

John F. Peto Studio Museum

Undisclosed

Purchased and renovated the John F. Peto Studio Museum in Island Heights, NJ.

Controversies & Challenges

2003

NASD Disciplinary Action

NASD filed a disciplinary action against Peter Kellogg alleging he directed fraudulent wash trades and matched trades in 2001. The allegations were dismissed in 2004.

Tax Strategy Disputes

Tax Strategy Disputes

Used offshore reinsurance structures through IAT Reinsurance Company Ltd., a Bermuda-domiciled entity, to defer U.S. taxes on investment income.

Billionaires Connected to Peter Kellogg

Peers in Finance-Investments

All Finance-Investments billionaires

Richest in United States

All billionaires from United States

Adjacent Global Ranks

Full global ranking

Frequently Asked Questions

What is Peter Kellogg's net worth in 2026?
As of 2026, Peter Kellogg's estimated net worth is $6.079 billion, ranking #685 among the world's billionaires. The estimate is based on publicly available shareholding data and market prices, updated daily.
How did Peter Kellogg make their money?
Peter Kellogg's wealth primarily comes from Investments, most notably through Spear, Leeds & Kellogg.
Where is Peter Kellogg from?
Peter Kellogg is from United States.
How old is Peter Kellogg?
Peter Kellogg is 83 years old.

Sources & References

  1. Peter Kellogg — Forbes profile Forbes