Activist investor Bill Ackman on value investing, his biggest wins and losses, the Harvard DEI fight, defending his wife, and politics.

Bill Ackman: Founder and CEO of Pershing Square, a legendary activist hedge fund investor behind some of the biggest and most controversial trades in history. He is also a prominent and outspoken voice on X, having played a central role in the resignation of Harvard's president.
Ackman walks Lex Fridman through his investing philosophy rooted in Benjamin Graham and Warren Buffett, explaining value investing, margins of safety, moats, and how he picks companies like Chipotle, Universal Music Group, and Alphabet. He recounts landmark battles including the General Growth bankruptcy bet, the Canadian Pacific proxy contest, and the Herbalife short war with Carl Icahn, as well as his worst loss, Valeant, which coincided with personal crisis. The conversation then turns to the campus response to October 7th, Harvard's governance failures and DEI ideology, and the resignation of president Claudine Gay. Ackman passionately defends his wife Neri Oxman against Business Insider's plagiarism accusations and discusses suing the outlet. He closes with views on Trump, Biden's fitness, his support for Dean Phillips, free speech on X, and optimism about AI and the future.
Benjamin Graham
“actually it was the first investment book I read and uh as such it was kind of the inspiration for my career and a lot of my life so important book”— Bill Ackman
Christopher Rufo
“a friend of mine sent me a Christopher rufo book America's cultural revolution... I found it actually one of the more important books I've read”— Bill Ackman
Tesla
“individual investors did a much better job analyzing Tesla than the so-called professional investors or analysts... if you bought a Tesla you understand the product”— Bill Ackman
Celador
“it's a bit like um Who Wants To Be A Millionaire you know when you go to the crowd and the crowd says a certain thing you got to trust the crowd”— Bill Ackman