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Publications
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- Faculty Publications (9)
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- July 2021 (Revised December 2021)
- Case
Pershing Square's Pandemic Trade (A)
By: Emil N. Siriwardane, Luis M. Viceira, Dean Xu and Lucas Baker
This case explores the decision that Bill Ackman, CEO and founder of the hedge fund Pershing Square Capital, was considering in late February 2020 about hedging the exposure of the fund’s portfolio from the potential financial fallout ensuing from an extreme event like...
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- December 2018 (Revised February 2019)
- Teaching Note
Pershing Square 2.0
By: Samuel G. Hanson
Teaching Note for HBS No. 216-003.
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- January 2016 (Revised January 2019)
- Case
The Allergan Board Under Fire (A)
By: Lynn S. Paine, Suraj Srinivasan, John C. Coates and David Lane
In 2014, the Allergan Inc. board of directors received a surprise takeover offer from Valeant Pharmaceuticals in alliance with hedge fund activist Bill Ackman's Pershing Square Capital Management. In the unprecedented arrangement between an acquirer and a hedge fund...
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Keywords:
Allergan, Inc.;
Valeant;
Ackman;
Pershing Square;
Tender Offer;
Activist Investors;
Business Models;
R＆D;
Board Of Directors;
Securities Litigation;
Acquisition Strategy;
Takeover Defenses;
Hedge Funds;
Shareholder Rights;
Proxy Contest;
Shareholder Special Meetings;
Legal Issues In Contested Takeovers;
Governing and Advisory Boards;
Mergers and Acquisitions;
Corporate Governance;
Management Teams;
Business and Shareholder Relations;
Pharmaceutical Industry
- January 2016 (Revised January 2019)
- Supplement
The Allergan Board Under Fire (B)
By: Lynn S. Paine, Suraj Srinivasan, John C. Coates and David Lane
In 2014, the Allergan Inc. board of directors received a surprise takeover offer from Valeant Pharmaceuticals in alliance with hedge fund activist Bill Ackman's Pershing Square Capital Management. In the unprecedented arrangement between an acquirer and a hedge fund...
View Details
Keywords:
Allergan, Inc.;
Valeant;
Ackman;
Pershing Square;
Tender Offer;
Activist Investors;
Business Models;
R＆D;
Board Of Directors;
Securities Litigation;
Acquisition Strategy;
Takeover Defenses;
Hedge Funds;
Shareholder Rights;
Proxy Contest;
Shareholder Special Meetings;
Legal Issues In Contested Takeovers;
Corporate Governance;
Investment Activism;
Business and Stakeholder Relations;
Business Model;
Business and Shareholder Relations;
Valuation;
Pharmaceutical Industry
- September 2015 (Revised September 2017)
- Case
Pershing Square 2.0
By: Robin Greenwood, Samuel Hanson and David Biery
In June 2015 William A. Ackman, the CEO and founder of New York hedge fund Pershing Square Capital, reflects on the success of the fund he has spent over a decade building. Since its inception in 2004, Pershing Square's assets under management had grown from $500...
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- August 2015 (Revised September 2015)
- Case
Shareholder Activists and Corporate Strategy
By: David Collis and Ashley Hartman
By 2015, there had been an upsurge in activist shareholders arguing for radical changes in companies' corporate strategies. Personalities like Carl Icahn, Bill Ackman, and Daniel Loeb were feared and loathed in some quarters, celebrated in others. With nearly $120...
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Keywords:
Scope;
Activist Investors;
Spin-offs;
Synergy;
Diversification;
Consolidation;
Hedge Fund;
Corporate Strategy
- June 2013 (Revised September 2015)
- Case
Procter & Gamble
By: Jay W. Lorsch and Kathleen Durante
On July 12, 2012, Bill Ackman's Pershing Square Capital Management announced publicly that it had purchased about $2 billion of Procter and Gamble (P&G) stock. Shares in the company closed up 3.75% the day the disclosure was made public. Ackman told the New York... View Details
- September 2012
- Teaching Note
General Growth Properties and Pershing Square Capital Management (TN)
By: Arthur I. Segel and Stuart C. Gilson
- May 2012 (Revised November 2015)
- Case
General Growth Properties and Pershing Square Capital Management
By: Arthur I. Segel, Stuart C. Gilson, Thomas Edward Follett Langer, Zubin Gopal Malkani and John Anthony Mascari