Stephen Francis Mandel Jr. is the founder of Lone Pine Capital, a long/short equity hedge fund managing approximately $25 billion. Lone Pine is one of the most consistently successful Tiger Cub funds, known for its deep fundamental research approach.
Mandel graduated from Dartmouth College and Harvard Business School before joining Tiger Management under Julian Robertson. He founded Lone Pine in 1997, naming it after a tree on the Dartmouth campus.
Lone Pine has generated estimated annualised net returns of approximately 20% since inception, with a focus on concentrated positions in high-quality growth companies. Mandel stepped back from day-to-day portfolio management in 2019, passing the reins to a team of portfolio managers, though he remains chairman. His net worth is estimated at approximately $4.6 billion.
SEC 13F filings, Institutional Investor Rich List, Bloomberg
| Year | 2023 | 2024 | 2025 |
|---|---|---|---|
| Return | +15% | +18% | +16% |