Food & Finance – Stephen Mandel, Founder of Lone Pine Capital: Evolving Markets and Building a Hedge Fund

Lone Pine Capital Founder Steve Mandel recently visited Yale SOM to discuss long/short investing and building a firm that lasts.

The hedge fund veteran shared lessons from nearly three decades running one of the world’s most respected long/short equity funds as part of a joint event held by the Swensen Institute and Yale Undergraduate Diversified Investments.

Steve Mandel, founder of Lone Pine Capital, visited SOM on March 30 to speak with over 100 Yale graduate and undergraduate students about his nearly three decades of experience building and running one of the world’s most respected long/short equity hedge funds. The event offered students a candid look at the arc of Mandel's career—from his early days as a consumer and retail equity research analyst at Goldman Sachs and director at Julian Robertson's Tiger Management, to founding Lone Pine in 1998 and ultimately stepping back from day-to-day portfolio management eight years ago.

Mandel recounted that Lone Pine’s earliest and most consequential fundraising call was to Yale’s then-CIO David Swensen. His thesis was simple: if he could attract the most respected institutional investors, others would follow. Yale invested, and that vote of confidence helped establish the firm’s credibility from the start. Today, Lone Pine manages just under $20 billion, with approximately 75% in long-only strategies and 25% in long/short equity.

Throughout the conversation, Mandel returned repeatedly to the centrality of management quality as an essential component of Lone Pine’s investment decisions. Drawing on his background covering consumer and retail companies—including an early deep dive into Walmart that shaped his admiration for Sam Walton, and then into Costco's leadership team—he argued that nearly every major investment mistake he has made traces back to a misjudgment of the people running a business.

Mandel also spoke at length about the firm he set out to build—one designed to outlast its founder. From the beginning, he structured Lone Pine with broadly distributed ownership, uniform office sizes, and a deliberate culture of meritocracy, in which more junior employees are given better office views and every analyst is expected to buy into the firm’s long-term mission. The firm is now on its second generation of leadership, and Mandel expressed confidence in its ability to persist—a goal he considers as important as any investment return.