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- All HBS Web
(30)
- News (8)
- Research (13)
- Multimedia (2)
- Faculty Publications (16)
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- 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... View Details
Keywords: Activism; Value Investing; Portfolio Management; Management; Investment Portfolio; Investment Activism
Greenwood, Robin, Samuel Hanson, and David Biery. "Pershing Square 2.0." Harvard Business School Case 216-003, September 2015. (Revised September 2017.)
- December 2018 (Revised February 2019)
- Teaching Note
Pershing Square 2.0
By: Samuel G. Hanson
Teaching Note for HBS No. 216-003. View Details
General Growth Properties and Pershing Square Capital Management
Segel, Arthur I., Stuart C. Gilson, Thomas Edward Follett Langer, Zubin Gopal Malkani, and John Anthony Mascari. "General Growth Properties and Pershing Square Capital Management." Harvard Business School Case 212-109, May 2012.
View Details- Awards
Russell Sage Foundation Small Research Grant
Awarded grants from the Russell Sage Foundation, the Pershing Square Fund for Research on the Foundations of Human Behavior, and the Lab for Economic Applications and Policy for experimental project "Asymmetric Naivete: Beliefs about Self-Control." View Details
- 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
Segel, Arthur I., Stuart C. Gilson, Thomas Edward Follett Langer, Zubin Gopal Malkani, and John Anthony Mascari. "General Growth Properties and Pershing Square Capital Management." Harvard Business School Case 212-109, May 2012. (Revised November 2015.)
- 14 Apr 2014
- News
The Pershing Square Foundation Awards $17M to Harvard
- September 2012
- Teaching Note
General Growth Properties and Pershing Square Capital Management (TN)
By: Arthur I. Segel and Stuart C. Gilson
- 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
Keywords: Ackman; P＆G; Pershing Square Capital Managment; Disruption; Management Succession; Crisis Management; Acquisition; Consumer Products Industry; Financial Services Industry
Lorsch, Jay W., and Kathleen Durante. "Procter & Gamble." Harvard Business School Case 413-127, June 2013. (Revised September 2015.)
- 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... View Details
Keywords: Health Pandemics; Financial Liquidity; Cost Management; Decision Choices and Conditions; Risk Management
Siriwardane, Emil N., Luis M. Viceira, Dean Xu, and Lucas Baker. "Pershing Square's Pandemic Trade (A)." Harvard Business School Case 222-007, July 2021. (Revised December 2021.)
- 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... 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; Governing and Advisory Boards; Mergers and Acquisitions; Corporate Governance; Management Teams; Business and Shareholder Relations; Pharmaceutical Industry
Paine, Lynn S., Suraj Srinivasan, John C. Coates, and David Lane. "The Allergan Board Under Fire (A)." Harvard Business School Case 316-010, January 2016. (Revised January 2019.)
- 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
Paine, Lynn S., Suraj Srinivasan, John C. Coates, and David Lane. "The Allergan Board Under Fire (B)." Harvard Business School Supplement 316-029, January 2016. (Revised January 2019.)
Case: The Allergan Board Under Fire (A)
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... View Details
- 09 Feb 2011
- News
The Long & Short on Investing
- 09 Feb 2011
- News
Access to Capital
- 07 Jun 2018
- News
Bill Ackman on what it means to be an activist investor
Matthew Rabin
Matthew Rabin is the Pershing Square Professor of Behavioral Economics in the Harvard Economics Department and Harvard Business School.
Before that, he spent 25 years at the wonderful University of California, Berkeley Economics Department. His research... View Details
- 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... View Details
Keywords: Scope; Activist Investors; Spin-offs; Synergy; Diversification; Consolidation; Hedge Fund; Corporate Strategy
Collis, David, and Ashley Hartman. "Shareholder Activists and Corporate Strategy." Harvard Business School Case 716-403, August 2015. (Revised September 2015.)
- Web
Founders & Investors - Entrepreneurship
Ramon Blanco Board Member, etece.com MBA 1997 Load More Hüsnü Özyeğin Finansbank MBA 1969 William A. Ackman Pershing Square Capital Management MBA 1992 Arun Agarwal Infinio MBA 2011 Ethan Anderson MyTime MBA... View Details
- Web
Marketing Awards & Honors - Faculty & Research
University in 2020. Julian De Freitas : Awarded the Goethals Teaching Prize by Harvard University in spring of 2020. Julian De Freitas : Recipient of a Hodgson Fund Grant from Harvard University in 2020. Julian De Freitas : Recipient of a View Details
- 01 Jun 2011
- News
HBS on Squawk Box
CNBC’s morning business show broadcast live from the Baker Library | Bloomberg Center’s Stamps Reading Room on February 9, giving faculty and alumni an opportunity to air their views on investing and access to capital. Host Carl Quintanilla (right) and cohost... View Details