D1 Capital Partners

D1 Capital Partners was founded in 2018 by Dan Sundheim, formerly a partner at Viking Global Investors where he spent over a decade. The firm operates as both a long/short equity hedge fund and venture capital investor, managing over $20 billion in assets across public and private markets. Sundheim's approach combines traditional public market analysis with private company investing, focusing on technology companies with strong unit economics and defensible market positions. The firm has gained prominence for its growth-stage investments in unicorn companies, often writing checks of $50-200 million in Series B and later rounds. D1's investment philosophy centers on identifying companies with exceptional management teams, large addressable markets, and sustainable competitive advantages. The firm has been particularly active in enterprise software, fintech, and consumer technology, with notable investments spanning both sides of the Atlantic. What distinguishes D1 is its ability to provide both growth capital and public market expertise to portfolio companies preparing for eventual IPOs.