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Publications

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  • All HBS Web  (33)
    • Faculty Publications  (9)

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    • All HBS Web  (33)
      • 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...  View Details
      Keywords: Health Pandemics; Financial Liquidity; Cost Management; Decision Choices and Conditions; Risk Management
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      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.)
      • October 2018
      • Case

      The Proxy Fight at ADP

      By: Robin Greenwood and E. Scott Mayfield
      In July 2017, shares of Automatic Data Processing, Inc. (ADP) surged 12% following a report that the activist investor Bill Ackman had acquired a sizable stake in the company and planned to nominate his own slate of directors at the company’s annual meeting in...  View Details
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      Greenwood, Robin, and E. Scott Mayfield. "The Proxy Fight at ADP." Harvard Business School Case 219-052, October 2018.
      • 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
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      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
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      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.)
      • 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
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      Greenwood, Robin, Samuel Hanson, and David Biery. "Pershing Square 2.0." Harvard Business School Case 216-003, September 2015. (Revised September 2017.)
      • 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
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      Lorsch, Jay W., and Kathleen Durante. "Procter & Gamble." Harvard Business School Case 413-127, June 2013. (Revised September 2015.)
      • May 2011 (Revised December 2011)
      • Case

      Stuyvesant Town - Peter Cooper Village: America's Largest Foreclosure

      By: Arthur I Segel, Gregory S. Feldman, James T. Liu and Elizabeth C. Williamson
      In July 2010, William Ackman, the founder of Pershing Square, is considering a potential new opportunity: the acquisition of the distressed Stuyvesant Town and Peter Cooper Village ("ST /PCV") complex. The property had recently been abandoned by its owners and had come...  View Details
      Keywords: Property; Risk Management; Opportunities; Valuation; Insolvency and Bankruptcy; Investment; Outcome or Result; Acquisition; North and Central America
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      Segel, Arthur I., Gregory S. Feldman, James T. Liu, and Elizabeth C. Williamson. "Stuyvesant Town - Peter Cooper Village: America's Largest Foreclosure." Harvard Business School Case 211-106, May 2011. (Revised December 2011.)
      • October 2010
      • Teaching Note

      Target Corporation: Ackman versus the Board (TN)

      By: Krishna G. Palepu and Suraj Srinivasan
      Teaching Note for 109010.  View Details
      Keywords: Business Strategy; Problems and Challenges; Governing and Advisory Boards; Conflict and Resolution; Voting; Investment Activism
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      Palepu, Krishna G., and Suraj Srinivasan. "Target Corporation: Ackman versus the Board (TN)." Harvard Business School Teaching Note 111-053, October 2010.
      • June 2009 (Revised January 2011)
      • Case

      Target Corporation: Ackman versus the Board

      By: Krishna G. Palepu, Suraj Srinivasan and James Weber
      After 15 years of great performance, Target's faltering performance during an economic downturn led an activist shareholder to initiate a proxy fight. Target Corporation, the second largest discount store retailer in the U.S., had competed successfully against industry...  View Details
      Keywords: Financial Crisis; Investment Activism; Governing and Advisory Boards; Business and Shareholder Relations; Business Strategy; Value; Retail Industry
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      Palepu, Krishna G., Suraj Srinivasan, and James Weber. "Target Corporation: Ackman versus the Board." Harvard Business School Case 109-010, June 2009. (Revised January 2011.)
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