All Sources
48 primary sources spanning 1992–present — annual reports, presentations, speeches, interviews, open letters, and threads, each cross-referenced with concepts and people.
Annual Reports
Pershing Square Holdings Annual Report 2014
The 2014 report documents the novel Allergan campaign, in which Pershing Square partnered with Valeant to force a takeover, and the landmark listing of Pershing Square Holdings on Euronext Amsterdam — the first step toward permanent capital. Ackman frames the listing as a structural answer to the redemption risk that had constrained every activist fund before him. The report also introduces the Valeant relationship that would define the next act of his career.
Pershing Square Holdings Annual Report 2015
The 2015 report is written under duress: Valeant, then the fund's largest position, had begun its collapse amid drug-pricing scandal and accounting allegations. For the first time, Ackman concedes in print that the investment thesis itself — not merely the price — may be flawed. The report is the opening document of the valley years, showing a manager trying to distinguish volatility from permanent loss while the ground moved beneath him.
Pershing Square Holdings Annual Report 2016
The 2016 report contains the most searching self-examination Ackman has ever published: the full exit from Valeant at a loss of roughly $4 billion, and an honest reconstruction of where the logical chain broke — mistaking an acquisition-driven roll-up for a durable franchise, and a charismatic operator for the right CEO. It also covers the Herbalife settlement trajectory and the beginning of a rebuilt, more disciplined process. This is the essential document of the valley years.
Pershing Square Holdings Annual Report 2017
The 2017 report documents the reconstruction phase: new positions in Chipotle and Howard Hughes Corporation, a smaller team, and a deliberate retreat from public confrontation. Ackman describes a return to first principles — simple, predictable businesses bought at discounts — after years in which the fund's battles had consumed its analytical edge. The tone is chastened but not defeated.
Pershing Square Holdings Annual Report 2018
The 2018 report confronts another year of significant underperformance against the index, with assets under management down roughly seventy percent from the peak. Ackman describes an internal cultural review: fewer people, fewer positions, fewer public fights, and a formalized process for stress-testing theses against their strongest opponents. The report closes the valley years and lays the procedural groundwork for the renaissance that followed.
Pershing Square Holdings Annual Report 2019
The 2019 report records one of the best years in the fund's history: a near-sixty-percent return driven by the rebuilt portfolio of simple, predictable businesses. Ackman attributes the recovery not to new brilliance but to the disciplined application of old principles — concentration, quality, and patience — under a permanent capital structure that removed redemption pressure. The report marks the visible beginning of the renaissance.
Pershing Square Holdings Annual Report 2020Essential
The 2020 annual report documents Pershing Square's most celebrated trade: a $27 million credit default swap position that returned $2.6 billion in three weeks as COVID-19 triggered a market collapse. Ackman details the thesis (not a market short, but a portfolio hedge), the specific CDS instrument chosen, and the controversial CNBC appearance where he tearfully warned that hell was coming. He then explains why he immediately redeployed all proceeds back into equities — and why his long book performed extraordinarily well as a result.
Pershing Square Holdings Annual Report 2021
The 2021 report covers the unwinding of the PSTH SPAC after its complex Universal Music transaction was blocked — an ambitious structure that failed on regulatory grounds rather than economics. Against that setback, Ackman details the core portfolio of Domino's, Lowe's, Hilton, and Restaurant Brands, framing them as durable compounders bought at reasonable prices. The report shows a manager who now treats failed experiments as tuition rather than catastrophe.
Pershing Square Holdings Annual Report 2022
The 2022 report documents Pershing Square's second great asymmetric hedge: interest rate swaptions that paid off massively as the Federal Reserve was forced to raise rates faster than markets believed possible. It also records the brief Netflix investment — bought during the post-earnings collapse, sold weeks later when the thesis on ad-supported growth proved too uncertain. The Netflix exit, taken at a loss without drama, shows how far the post-Valeant discipline had traveled.
Pershing Square Holdings Annual Report 2023
The 2023 report presents the mature state of the Pershing Square portfolio: the Howard Hughes spin-off completed, Universal Music Group held as a long-duration compounder, and the Eight Commandments applied as an explicit filter to every position. Ackman writes as the philosopher of the fourth act — less interested in battles than in structures that endure. The report is the clearest single snapshot of the post-transformation Ackman method.
Presentations
Who's Holding the Bag?
The complete forensic case against MBIA and the monoline bond insurance model: a detailed deconstruction of the debt structure, the leverage embedded in insured portfolios, and the accounting conventions that sustained a triple-A rating the capital base did not deserve. Ackman argues the rating agencies' models were structurally incapable of seeing the risk. Published before the crisis, the presentation became one of the most prescient short theses ever circulated.
General Growth Properties Bankruptcy Thesis
The investment case for General Growth Properties in Chapter 11: a presentation arguing that a real estate company's bankruptcy is a capital structure event, not a destruction of the underlying assets. Ackman walks through the mall portfolio's earning power, the reorganization math, and why unsecured creditors and equity could recover multiples of their distressed prices. The thesis became one of the most profitable distressed investments on record.
Target Corporation: The Real Estate Opportunity
A lengthy presentation arguing that Target's owned real estate — land beneath its stores carried at historical cost — represented billions in unrecognized value that a REIT separation could unlock. Ackman models the transaction structures, the rent coverage, and the pro forma valuation in exhaustive detail. The campaign ultimately failed at the proxy level, making the deck a study in the difference between being right about value and winning the vote.
Canadian Pacific Railway: The Case for ChangeEssential
The full activist thesis on Canadian Pacific: an underperforming railroad with world-class assets run at industry-worst efficiency, fixable by installing Hunter Harrison and his precision scheduled railroading model. The presentation lays out the operating ratio gap, the network analysis, and the specific operational playbook Harrison would execute. The ensuing proxy victory and operational transformation became the canonical proof of the right-CEO thesis — Ackman's finest activist campaign.
Who Wants to Be a Millionaire? — Herbalife PresentationEssential
The most famous short-selling presentation in modern hedge fund history. Over 334 slides, Ackman forensically dismantles Herbalife's business model, arguing it meets the legal and structural definition of a pyramid scheme: an unsustainable network that extracts money from distributors rather than from external retail customers. The presentation sparked a years-long battle with Carl Icahn, triggered an FTC investigation, and created the largest public short debate in financial history.
A Rising Tide is a Good Gamble
The case that Procter & Gamble's underperformance was a management problem rather than a portfolio problem: bloated cost structure, slowing innovation, and a board too patient with mediocre execution. Ackman proposes specific operational targets and a leadership change. The campaign contributed to the return of A.G. Lafley as CEO, an outcome Ackman accepted even though it was not his first choice.
Fannie Mae and Freddie Mac: The Time for Reform Is Now
The institutional case for Fannie Mae and Freddie Mac: why the government-sponsored enterprises are indispensable to US housing finance, why their conservatorship was legally and economically unsustainable, and why private shareholders would ultimately be restored. The presentation combines constitutional argument, housing policy analysis, and valuation math. The position became one of the longest-duration and most litigious bets in the fund's history.
The Allergan Campaign
The unprecedented Allergan campaign, in which Pershing Square accumulated a toehold stake and partnered with Valeant to force a takeover of the Botox maker. The presentation argues that Allergan's standalone plan destroyed value relative to a Valeant combination, and that shareholders deserved the right to decide. The structure — activist as deal catalyst rather than bidder — broke new legal ground, though the partner chosen would later become the defining regret of Ackman's career.
ADP: The Time Is Now
The ADP activist thesis: a dominant payroll processor trading at a persistent discount to its own subsidiary's margins, held back by underinvested technology and an unambitious cost structure. Ackman proposes a transformation plan and questions whether the incumbent CEO is the right leader for it. The proxy fight was narrowly lost, but the operational agenda was largely adopted — and the stock outperformed materially in the years that followed.
Howard Hughes Corporation: The SimCity Thesis
The complete thesis on Howard Hughes Corporation: a unique vehicle owning irreplaceable master-planned communities whose land appreciates as the company itself builds the surrounding city — the SimCity framework. Ackman argues the market systematically undervalues the embedded land bank and the self-reinforcing economics of MPC development. The position became a cornerstone of the rebuilt, long-duration portfolio.
Music Is Universal
The formal SEC-filed investment presentation for Universal Music Group, delivered as part of the PSTH transaction. Ackman lays out the recorded-music royalty model as an annuity-like cash stream, streaming as a decades-long structural growth engine, and the SPARC structure designed to let long-term shareholders participate. Distinct from the informal Twitter threads on the same thesis — this is the institutional, numbers-first version.
Speeches
Ira Sohn 2010: Citigroup After GGP
Fresh off the General Growth windfall, Ackman uses the Ira Sohn stage to present his next recovery thesis: Citigroup preferred securities. He argues that the market continued to price Citi as if the crisis were permanent, while the underlying franchise and recapitalized balance sheet told a different story. The speech shows the GGP playbook being generalized into a repeatable distressed-to-quality framework.
Ira Sohn 2012: Think Big — The JCPenney Transformation
Ackman's most optimistic retail presentation: the case that JCPenney, under new CEO Ron Johnson of Apple Store fame, could be transformed from a fading department store into a collection of branded shops at dramatically higher sales per square foot. The logic was seductive — great real estate, a proven retail visionary, and a broken cost structure — and the speech captures Ackman's conviction at its peak. The thesis failed within two years, making this the defining document of his pre-valley confidence.
Ira Sohn 2015: The Valeant Defense
Delivered as Valeant's stock was collapsing, this speech is Ackman's full-throated public defense of the company and CEO Michael Pearson: the acquisition model was sound, the accounting concerns were overblown, and the market was confusing controversy with fraud. Read with hindsight it is a catalogue of motivated reasoning; read in context it shows how a well-built thesis can capture its author. It is now studied as the canonical example of conviction curdling into commitment.
The Valeant Defense Webcast
A four-hour conference call in which Ackman defends Valeant point by point against mounting skepticism (including questions from Sequoia Fund shareholders). It is the single most complete record of his reasoning while the thesis was breaking — and therefore the ultimate case study in confirmation bias: every answer is internally coherent, and the premise was still wrong. To be presented as the logic of the moment, with honest retrospective kept separate.
Ira Sohn 2017: Howard Hughes Corporation
Ackman presents Howard Hughes Corporation to the Sohn audience as a generational asset: master-planned communities whose value compounds as the company develops its own land over decades. The speech marks a visible shift in his public persona — away from combat, toward patient ownership of irreplaceable assets. It is the renaissance thesis arriving a year before the renaissance returns.
Interviews
Confidence Game
The definitive third-party account of the six-year MBIA short: the forensic research process, the regulatory stonewalling, the endurance required to hold a mocked position. Ackman is the book's subject and speaks extensively throughout. Priority chapters: the 'back-door' trades, the MBIA confrontation, and the denouement. Direct quotations are primary material; narration is secondary context. Subject matter belongs to the Gotham-to-golden-era arc.
The Alpha Masters — Chapter 6: The Activist Answer
A book-chapter-length interview conducted at the peak of Ackman's activist powers. He narrates the activist playbook in his own voice: position building, board engagement, public campaigns, and the temperament required. Not his own writing, but extensive direct speech — a primary window into how he explained himself at the height of the golden era.
Ackman vs. Icahn: The Live CNBC ShowdownEssential
Carl Icahn calls into CNBC while Ackman is on air, and what follows is thirty minutes of unscripted financial warfare: accusations, a decade-old grudge over a 2003 deal, and two irreconcilable views of Herbalife and of what activist investing is for. The broadcast turned a short thesis into a personal saga and guaranteed that the Herbalife trade would be fought in public to the end. It remains the most watched moment of either man's career.
Squawk Box: The Valeant Exit
A Squawk Box panel segment — third-party coverage, not an interview — dissecting Pershing Square's complete exit from Valeant at a loss of roughly $4 billion: whether the wound is Ackman-specific or a broader statement about hedge-fund activism. Ackman himself does not appear; the segment's archival value is exactly that — the market conducting its own autopsy of the valley's deepest cut in real time. The 2016 annual report provides Ackman's own account.
Bloomberg Invest 2019
In one of his first extended interviews after the turnaround, Ackman explains what changed: a smaller firm, permanent capital through PSH, no more public short campaigns, and a portfolio of businesses he is content to own for years. He speaks openly about the personal toll of the valley years and why the new structure is designed to make them unrepeatable. The interview is the public debut of the fourth-act Ackman.
Hell Is ComingEssential
In an emotional, nearly half-hour CNBC appearance at the peak of the COVID panic, Ackman warns that hell is coming, urges an immediate national shutdown, and discloses that Pershing Square has profited enormously from credit hedges. Widely condemned in the moment as fear-mongering from a positioned trader, the interview looks different in full context: he was simultaneously pleading for the policy response that would — and did — save the economy, and buying stocks aggressively with his hedge proceeds. Three weeks later the trade was closed for $2.6 billion.
Bloomberg Markets 2021
Following the collapse of the PSTH-Universal Music transaction under SEC pressure, Ackman discusses what went wrong: a structure too clever for its regulatory moment. Notably, he treats the failure as a process error to be absorbed rather than defended, returning the SPAC's capital and folding the UMG thesis into the main fund. The interview shows the post-Valeant discipline applied to his own ambitions.
Squawk Box: Inflation Is Not Transitory
Ackman argues on air that inflation is structural rather than transitory and that the Federal Reserve is dangerously behind the curve — the macro view underwriting the fund's interest rate swaption position. He explains why the hedge was cheap precisely because the consensus believed the Fed's own forecasts. The call was vindicated within months as the Fed delivered the fastest tightening cycle in four decades.
Delivering Alpha 2023
At the Delivering Alpha conference, Ackman surveys the macro landscape — sticky inflation, fiscal deficits, regional banking stress — and makes the case that Pershing Square Holdings itself, trading at a wide discount to net asset value, is among his best ideas. The interview highlights the closed-end structure's strange dynamic: a manager who can buy back his own fund when the market misprices it. He frames buybacks as capital allocation discipline applied at home.
Squawk Box: The Pershing Square USA Vision
Breaking-news coverage, not an interview: Leslie Picker reports live that the Pershing Square USA IPO has been postponed, a day after a filing cut the target from $25 billion to $2.5–5 billion. Ackman does not appear. The clip preserves the renaissance's most public setback as the market received it — a real-time record of the pulled IPO, not a retrospective.
Podcasts
Open Letters & SEC
SC 13D: Target Corporation
Pershing Square's Schedule 13D filing on Target, which — unusually for a legal disclosure — carries the full investment thesis: the real estate value case, the proposed REIT separation, and the governance critique. The filing converts a regulatory obligation into a public argument, a signature Ackman technique. It is the legal spine of the Target campaign documented in the companion presentation.
SC 13D: Canadian Pacific Railway
The 13D filing that opened the Canadian Pacific campaign: disclosure of Pershing Square's large stake, its intent to seek board change, and the operational case for installing Hunter Harrison. As a legal document it marks the point of no return in an activist campaign — the moment argument becomes action. The proxy victory that followed reshaped the North American rail industry.
Open Letter to the JCPenney Board
Ackman's public letter to the JCPenney board demanding an accelerated CEO search after the Ron Johnson strategy collapsed — released while he still sat on that board. The letter turned an internal governance dispute into a public fight and led within days to his resignation from the board. It is a case study in the activist's dilemma: how to force change on an institution you are legally part of.
Open Letter to Allergan Shareholders
The open letter appealing directly to Allergan's shareholders over the head of its board: a detailed argument that the Valeant offer created more value than any standalone plan, and that the board's refusal to negotiate served entrenchment rather than owners. The letter was a central instrument in the campaign that ultimately delivered Allergan to Actavis. It shows Ackman's fluency in the rhetoric of shareholder democracy.
Pershing Square Holdings IPO Prospectus
The prospectus for the listing of Pershing Square Holdings on Euronext Amsterdam — the legal birth certificate of Ackman's permanent capital structure. Buried in its risk factors and structure descriptions is the strategic argument that would define the rest of his career: that an activist freed from redemption risk can hold through volatility that forces every competitor to sell. The document deserves reading as a founding text, not just a filing.
SC 13D: Automatic Data Processing
The 13D filing opening the ADP campaign, attaching Pershing Square's analysis of the margin gap between ADP and its own former subsidiary, the underinvestment in next-generation payroll technology, and the case for new leadership. ADP responded by putting the full Pershing Square presentation into its own proxy filings — an unusual moment of an activist thesis being litigated in both companies' disclosure documents. The proxy was lost; much of the agenda was adopted anyway.
Letter to Shareholders: The Netflix Exit
Pershing Square's shareholder letter announcing the complete exit of its Netflix position roughly four months after establishing it, at a loss of approximately $400 million. Ackman explains the decision in thesis terms: the subscriber miss and the pivot to advertising and account-sharing crackdowns changed the predictability of the business model — and when a core assumption breaks, the discipline is to exit rather than hope. A compact modern case study in volatility-vs-permanent-loss reasoning applied fast.
Social
Twitter Thread: The COVID Warnings
In the days around his CNBC appearance, Ackman used Twitter to argue for an immediate national lockdown, predicting catastrophic economic and human costs if the virus were allowed to spread unchecked. The threads, dismissed by many at the time as hysteria, read today as a remarkably accurate forecast of both the pandemic and the policy response. They are the public record of the information edge behind the greatest trade of his career.
Twitter Thread: Explaining the PSTH-UMG Failure
After the SEC effectively blocked PSTH's transaction to acquire a stake in Universal Music, Ackman takes to Twitter to explain what happened, why the structure failed, and what shareholders would receive instead. The threads are a model of public accountability: no defensiveness, a clear causal account, and a concrete remedy. They show the fourth-act Ackman handling failure the way the third-act Ackman could not.
Twitter Thread: The Universal Music Thesis
Across a series of threads, Ackman presents the investment case for Universal Music Group: recorded music as an annuity-like royalty stream, streaming as a structural growth engine with decades to run, and content ownership as an inflation-protected asset. The threads translate the full quality filter — simple, predictable, free-cash-flow generative — into public form. UMG became a core Pershing Square holding.
Twitter Thread: The Fed Is Behind the Curve
A series of extended threads arguing that the Federal Reserve fundamentally misread inflation and would be forced into a far more aggressive tightening cycle than markets priced. Ackman lays out the wage-price dynamics, the policy arithmetic, and the market implications with the rigor of a formal letter. The threads double as the public rationale for the swaption hedge that became his second great macro win.