LeaderPortfolio
family
M
Rank #68
UNITED STATESFinance & InvestmentsHedge funds

Marilyn Simons & family

Net Worth
$32.549B
0% (24h)
Marilyn Simons is an American philanthropist and advocate, recognized for her significant contributions to scientific research and education. With an estimated net worth of $32.5 billion, she is a leading figure in the world of philanthropy. Her wealth stems from her late husband, Jim Simons, a hedge fund legend and the founder of Renaissance Technologies, a quantitative trading firm. She co-founded the Simons Foundation in 1994, which has become a major supporter of basic science, mathematics, and autism research. Throughout her career, Simons has championed STEM research, education, and outreach, actively serving on various boards and councils. Her dedication to philanthropy and her influence in the scientific community have made her a notable figure in both finance and the advancement of knowledge.

The Full Dossier

Early Life

Marilyn Hawrys Simons, born around 1951, pursued a path in economics, earning both a B.A. and a Ph.D. from Stony Brook University. During her time at Stony Brook, she met her future husband, Jim Simons. While her academic background was in economics, her career trajectory led her to the world of philanthropy, particularly in the realm of scientific research and education.

Rise to Success

Marilyn Simons co-founded the Simons Foundation in 1994 with her husband, Jim Simons. Jim Simons was a mathematician, hedge fund manager, and investor. The Simons Foundation supports research in mathematics and basic sciences. After Jim Simons's death in May 2024, Marilyn Simons has continued to lead the foundation.

Key Business Strategies

The Simons Foundation's key strategy has been to fund basic science research, education, and outreach. The foundation makes grants to individual researchers and their projects. The foundation also launched the Flatiron Institute, an in-house multidisciplinary research institute focused on computational science. Renaissance Technologies, founded by her late husband, Jim Simons, employed quantitative investment strategies, which led to significant financial success.

Philanthropy

Marilyn Simons oversees the philanthropic work of the MJS Foundation, a private family foundation. The Simons Foundation has made significant contributions to research in mathematics, life sciences, autism research, and education. She is also involved in supporting K-12 education for underserved communities. She is also a member of the board of trustees of the LearningSpring School, a New York City-based school for children diagnosed on the autism spectrum.

Career Timeline

2024

Widowed

Her husband, Jim Simons, passed away.

2019

Chair of the Board of Trustees of the Cold Spring Harbor Laboratory

Assumed the role of chair of the board.

2014

Founded the Stony Brook Women's Leadership Council

Established a mentoring program for undergraduate women at Stony Brook University.

2008

Joined the Cold Spring Harbor Laboratory Board of Trustees

Became a member of the board of trustees for the Cold Spring Harbor Laboratory.

1994

Co-founded the Simons Foundation

Established the foundation with her husband, Jim Simons, to support research in mathematics and basic sciences.

Philanthropic Impact

Science Research$4B+

Simons Foundation

Supports research in mathematics and basic sciences.

EducationUndisclosed

Math for America

Supports math and science teachers at public schools.

Autism Research$725M+

Autism Research

Funds research into the causes of autism.

Education$500M

Stony Brook University

Donation to support research infrastructure, faculty recruitment, and student programs

Wealth Trajectory