BillionaireNet
Sundheim
D
Rank #1539
UNITED STATESFinance & InvestmentsHedge funds

Daniel Sundheim

Net Worth
$2.586B
0% (24h)
Daniel Sundheim is the founder and Chief Investment Officer (CIO) of D1 Capital Partners, a global investment firm. With a net worth estimated at $2.6 billion as of December 16, 2025, Sundheim made his fortune through hedge funds. His career includes 15 years at Viking Global Investors, where he served as CIO. Sundheim founded D1 Capital Partners in 2018, and the firm has become a significant player in the investment world. He is known for his strategic bets and commitment to long-term investment strategies. Sundheim is also actively involved in philanthropy, supporting various educational and cultural institutions.

The Full Dossier

Early Life and Education

Daniel Sundheim was born around 1976 or 1977. He graduated from the Wharton School at the University of Pennsylvania in 1999 with a bachelor's degree in economics.

Rise to Success

Sundheim began his career at Bear Stearns in the Merchant Banking Group, where he worked on private equity investments. In 2002, he joined Viking Global Investors, and over 15 years, he rose to Chief Investment Officer. Sundheim founded D1 Capital Partners in July 2018 with more than $500 million of his own money. The firm focuses on sectors such as technology, healthcare, and consumer markets. D1 Capital Partners quickly became one of the top-performing hedge funds.

Key Business Strategies

Sundheim's business philosophy emphasizes flexibility and a long-term view. He focuses on both public and private markets and adapts investment strategies to changing market conditions. Sundheim is known for his collaborative leadership style, combining rigorous research with calculated risk-taking. D1 Capital Partners' investment strategy includes a focus on the consumer, business services, financial services, healthcare, industrials, real estate, and technology sectors.

Philanthropy

Sundheim and his wife, Brett, are actively involved in philanthropy. They support education and the arts, including the Museum of Modern Art (MoMA) and the University of Pennsylvania.

Career Timeline

2018

Founded D1 Capital Partners

Launched a global investment firm that operates across public and private markets.

2002

Joined Viking Global Investors

Held various roles, eventually becoming Chief Investment Officer.

1999

Began Career at Bear Stearns

Worked in the Merchant Banking Group on private equity investments.

Philanthropic Impact

Education$10M

University of Pennsylvania

Gift to support international students in the School of Arts and Sciences

Education$7.5M

Ransom Everglades School

Pledged for a new humanities building

Healthcare$5M

UHealth-University of Miami Health System

Committed to the university's Ever Brighter fundraising campaign

Wealth Trajectory