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Billionaire Profile
Joel Greenberg
Global Rank
#1415

Image: Office of the Seminole County Tax Collector | Public domain | via Wikimedia Commons

Joel Greenberg

CEO, Trading
UNITED STATES
Real-Time Net Worth
$3.003B
Estimated based on Trading stock value as of April 20, 2026
0% (24h)
Age
68
Source
Trading, investments
Industry
Finance & Investments
Citizenship
UNITED STATES

Biography

Joel Greenberg is an American billionaire businessman and co-founder of Susquehanna International Group (SIG), one of the world's largest and most successful trading firms. His source of wealth comes from trading and investments. Greenberg, who met his billionaire co-founder Jeff Yass at SUNY Binghamton, served as SIG's chief operating officer after co-founding the firm in 1987. As of January 2025, his net worth was estimated at $2.3 billion. Greenberg is known for his analytical rigor, and his career has seen him become an executive producer and involved in philanthropy.

Fact Checked
Verified by Editorial Team
Live Data
Updated 4/20/2026

Wealth Over Time

In-Depth Profile

Early Life and Education

Joel Kenneth Greenberg was born in either 1957 or 1958. He earned a Bachelor's degree from Binghamton University where he met his future co-founder Jeff Yass. He then earned a Juris Doctor degree from Columbia Law School.

Rise to Success

In 1987, Greenberg co-founded Susquehanna International Group (SIG) and served as its chief operating officer. SIG is a major player in quantitative trading.

Key Business Strategies

SIG's success is attributed to its probabilistic, game-theory-driven approach to trading. The company has made significant investments in private companies, including a major stake in ByteDance, the parent company of TikTok. Greenberg retired from his role at SIG in 2016.

Philanthropy

Greenberg, with his wife Marcy Gringlas, is involved in philanthropy through their Seed the Dream Foundation, donating over $2 million to the USC Shoah Foundation.

Career Milestones

1987

Cofounded Susquehanna International Group

Co-founded Susquehanna International Group (SIG) and became Chief Operating Officer. SIG is one of Wall Street's largest and most successful trading firms.

2016

Retired from Susquehanna International Group

Retired from his role at SIG.

2021

Executive Producer

Served as an executive producer for the film "The Survivor"

Philanthropy & Social Impact

Education

USC Shoah Foundation

$2M+

Through their Seed the Dream Foundation, Joel and Marcy have donated over $2 million to the USC Shoah Foundation.

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