Warren Buffett

Biography

Warren Buffett (b. 1930) needs no introduction in these pages, but he needs a precise one, because his role in Ackman's story is easily overstated in the wrong way and understated in the right one. He is not a partner, not a confidant, not a collaborator in any campaign; the two men are not close, and Berkshire Hathaway appears in the Pershing Square archive as a portfolio position for only a brief window. He is, instead, the distant professor — the investor whose published writings formed Ackman's education more than any teacher he ever sat in front of, and whose corporate structure became the explicit blueprint for Ackman's fourth act. The golden-era Ackman was the anti-Buffett in method: public, confrontational, catalyst-driven. The renaissance Ackman is recognizably Buffett's student: long-duration, quality-first, structurally patient. Tracing how one became the other is one of the subtler arcs in this knowledge base.

Relationship with Ackman

The relationship runs along two tracks, and Ackman names both himself. The first is intellectual apprenticeship. Asked in 2024 what he finds most powerful about Buffett's approach, he answers without hesitation: "most of what I've learned in the investment business I've learned from waren Buffett he's been my great Professor" (Lex Fridman podcast, 2024 — the transcript's rendering of "Warren"). The curriculum was self-administered and documentary: after Benjamin Graham's Intelligent Investor, "I started by reading the Berkshire hathway and reports uh and then I eventually got the Buffett partnership letters" — the mid-1950s letters to Buffett's first limited partners, which Ackman praises as an amazing read for following one investor's trajectory across decades. What he absorbed above all was temperament: the emotional discipline to face the lemmings running the other way, to ask, in Ackman's paraphrase, whether a risk is real or the crowd is merely overreacting. "Buffett's been great at that and great at teaching about what he calls temperament" (Lex Fridman podcast, 2024).

The second track is structural, and it is the more consequential. The problem of Ackman's first career was redemption risk: Gotham died because investors could leave at the bottom, and the 2015–2017 siege nearly killed Pershing Square the same way. Buffett had solved this problem permanently. "What Buffett has is is a company where people want to take their money out they sell the stock but the money stays so we set up a similar structure in October of 2014" (Lex Fridman podcast, 2024). That structure is Pershing Square Holdings, listed on Euronext Amsterdam on October 13, 2014 — the 2014 annual report notes the "permanent capital base is quickly approaching a majority of our capital." The debt of the fourth act to Buffett is therefore not stylistic but existential: Ackman rebuilt his own firm in the image of the man who never needs anyone's permission to wait.

The relationship has one warm footnote. Buffett's world and Ackman's occasionally touched, and Buffett once gave Ackman a piece of media wisdom he quotes with evident feeling, describing a business Buffett loves: "the only person who can cause you more harm than a thief with a dagger is a journalist with a pen" (Warren Buffett, as relayed by Bill Ackman, Lex Fridman podcast, 2024). For a man whose valley was dug partly by hostile coverage, the sentence landed where it was aimed.

Key Episodes

The education (1980s–2000s). There is no single scene, only a reading life: the Intelligent Investor first, then the Berkshire annual reports, then the partnership letters. The compound effect shows everywhere in the archive — in the insistence that risk is not volatility but permanent loss (volatility vs. permanent loss), in the circle-of-competence gate inside the Eight Commandments, in the preference for businesses whose cash flows can be projected a decade out. Ackman's activism was always grafted onto a value-investing rootstock, and the rootstock is Buffett's version of Graham.

The permanent capital conversion (2014). The PSH listing was the moment the apprenticeship became architecture. Ackman has described the listed vehicle, in the period before Valeant, as "our version of Burkshire hathway" — so to speak, permanent capital (Lex Fridman podcast, 2024; transcript's spelling). The timing proved brutal: the structure arrived one year before the crisis that would have destroyed the old fund, and it is the reason the valley was survivable. When redemptions came, they came only to the open-ended funds; the listed core held. The student had built the master's shelter just before the storm.

Owning Berkshire itself (2019–2020). The most literal expression of the relationship came at the turn of the fourth act. In 2019, Pershing Square established a new investment in Berkshire Hathaway; in the COVID crash, as the 2019 annual report records, the fund redeployed its hedge proceeds aggressively: "we have increased our stakes in Agilent by 16%, Berkshire Hathaway by 39%, Hilton by 34%, Howard Hughes by 158%, Lowe's by 46%, and Restaurant Brands by 26%." The rationale reads like a tribute: Berkshire was built to withstand exactly this kind of global shock, with more than $120 billion of free cash to deploy opportunistically, advantaged in its ability to invest insurance capital in equities when other insurers could not. The position was not held forever — the 2020 report records that the Investment Manager "exited its investment in Berkshire Hathaway" later that year — but the episode completes the arc: the student of the letters became, briefly, an owner of the institution, buying it at the moment of maximum fear with the proceeds of the greatest hedge in the firm's history.

Legacy & Lessons

Buffett's legacy in this knowledge base is the destination of the four-act arc. The young Ackman weaponized research; the mature Ackman, after the valley, sought what Buffett had all along: a structure in which time is an ally rather than a creditor. Permanent capital, a concentrated portfolio of durable franchises, the refusal of public short campaigns, the patience to let intrinsic value compound — the renaissance operating system is, clause by clause, a Buffett document written in Ackman's hand. Even the COVID trade, the most spectacular coup of the fourth act, was executed on Buffett's logic: hedge the tail, never sell the good companies into the panic, and when terror peaks, buy.

The subtler lesson is about learning from a master you cannot call. Ackman's Buffett is a textual relationship — annual reports and sixty-year-old partnership letters — which makes it, in its way, the purest mentorship in this archive: no access, no favors, nothing but the published record and the discipline to follow it across thirty years. Ackman's summary judgment is the fitting epitaph for the relationship: "Buffett is the ultimate long-term thinker" (Lex Fridman podcast, 2024). The warrior of the golden era would have called that an aspiration. The philosopher of the renaissance calls it, simply, the model — and he rebuilt his firm to be able to live up to it.