LeaderPortfolio
family
M
Rank #63
UNITED STATESFinance & InvestmentsHedge funds

Marilyn Simons & family

Net Worth
$32.549B
0% (24h)
Marilyn Simons, the widow of hedge fund legend Jim Simons, is a prominent figure in the world of philanthropy and finance. With an estimated net worth of $32.5 billion, her wealth stems from her late husband's successful career at Renaissance Technologies. She actively supports STEM research, education, and outreach. She is the co-founder and co-chair of the Simons Foundation, which has contributed billions to various fields, including mathematics, physics, and autism research. Simons has dedicated a significant portion of her career to philanthropic leadership, serving on multiple boards and founding the Stony Brook Women's Leadership Council, reflecting her commitment to education and scientific advancement.

The Full Dossier

Early Life

Marilyn Hawrys Simons was born around 1951 in the United States. She pursued a path in academia, earning a B.A. and Ph.D. in economics from Stony Brook University. Her early life instilled in her a curiosity about the influence of money, policy, and institutions on daily life. This interest guided her towards a career in the non-profit sector.

Rise to Success

Marilyn Simons gained prominence through her marriage to Jim Simons, a renowned mathematician, investor, and the founder of Renaissance Technologies. While Jim built an empire in quantitative finance, Marilyn dedicated herself to philanthropy. After Jim's passing in May 2024, her role in the Simons Foundation became even more visible, and she continues to lead the foundation's initiatives.

Key Business Strategies

Marilyn Simons’ wealth is primarily derived from her late husband, Jim Simon's, hedge fund, Renaissance Technologies. The Simons family's wealth has been built through the application of mathematical models and algorithms to financial markets. Her focus is on the Simons Foundation which supports basic science across mathematics, physics, biology, and autism research.

Philanthropy

Marilyn Simons has been a driving force behind the Simons Foundation, which has committed over $4 billion in grants. Her personal experiences have deeply influenced her philanthropic choices, particularly after the loss of her sons. She supports initiatives related to science education, research, and autism awareness. Marilyn is also involved with LearningSpring School and the East Harlem Scholars Academies. She founded the Stony Brook Women's Leadership Council and supports multiple research facilities. The Simons Foundation focuses on long-term projects and gives researchers the freedom to pursue their work. Marilyn encourages her children to create their own philanthropic paths.

Career Timeline

2024

Widowed

Widow of Jim Simons.

2019

Chair of the Board of Trustees, Cold Spring Harbor Laboratory

Became the chair of the board of trustees of the Cold Spring Harbor Laboratory.

2014

Founded Stony Brook Women's Leadership Council

Founded a mentoring program for outstanding undergraduate women at Stony Brook University.

2008

Joined the CSHL Board of Trustees

Joined the Board of Trustees of the Cold Spring Harbor Laboratory.

1994

Co-founded the Simons Foundation

Co-founded the Simons Foundation to support research in mathematics and fundamental sciences.

Philanthropic Impact

Scientific Research$4B+

Simons Foundation

Supports research in mathematics, physics, biology, and autism research. The foundation has given away over $4 billion in grants since its beginning and is still growing.

EducationUnknown

Math for America

Supports Math for America and improves math education.

Autism SupportUnknown

LearningSpring School

Supports a New York City-based school for children diagnosed on the autism spectrum.

EducationUnknown

East Harlem Scholars Academies

Supports K-12 education for underserved communities.

EducationUnknown

Stony Brook Women's Leadership Council

Founded a mentoring program for outstanding undergraduate women at Stony Brook University.

Wealth Trajectory