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  • All HBS Web  (7,456)
    • People  (8)
    • News  (1,174)
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  • January 2008
  • Article

The Five Competitive Forces That Shape Strategy

By: Michael E. Porter
This article includes a one-page preview that quickly summarizes the key ideas and provides an overview of how the concepts work in practice along with suggestions for further reading. In 1979, a young associate professor at Harvard Business School published his first... View Details
Keywords: Profit; Five Forces Framework; Industry Growth; Industry Structures; Business and Government Relations; Competitive Strategy
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Porter, Michael E. "The Five Competitive Forces That Shape Strategy." Special Issue on HBS Centennial. Harvard Business Review 86, no. 1 (January 2008): 78–93.
  • April 1986 (Revised May 1989)
  • Case

Alloy Rods Corp.

By: Frank V. Cespedes
In July of 1985 the managers of Alloy Rods (who recently purchased the company through a leveraged buyout arrangement) find that their chief competitor (a company more than 6 times as large as Alloy Rods) has introduced a new product clearly aimed at Alloy's most... View Details
Keywords: Leveraged Buyouts; Business Strategy; Business or Company Management; Financial Strategy; Marketing Strategy; Marketing Channels; Product Development
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Cespedes, Frank V. "Alloy Rods Corp." Harvard Business School Case 586-046, April 1986. (Revised May 1989.)
  • January 2008 (Revised August 2012)
  • Case

Retail Sales of Health Insurance: Blue Cross Blue Shield of Florida

By: Regina E. Herzlinger and Grady Clouse
The BCBS of Florida is contemplating whether to enter the consumer-driven health care market and if so, whether to target such groups—and individuals—and in which of its geographic markets, and how. View Details
Keywords: Health Care and Treatment; Nonprofit Organizations; Strategy; Insurance; Insurance Industry; Florida
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Herzlinger, Regina E., and Grady Clouse. "Retail Sales of Health Insurance: Blue Cross Blue Shield of Florida." Harvard Business School Case 308-089, January 2008. (Revised August 2012.)
  • Article

The Stock Selection and Performance of Buy-Side Analysts

By: Boris Groysberg, Paul M. Healy, Georgios Serafeim, Devin Shanthikumar and Gui Yang
We examine the selection and performance of stocks recommended by analysts at a large investment firm relative to those of sell-side analysts during the period mid-1997 and 2004. The buy-side firm's analysts issued less optimistic recommendations for stocks with larger... View Details
Keywords: Buy-side Analysts; Sell-side Analysts; Stock Recommendations; Recommendation Optimism; Recommendation Performance; Investment Recommendations; Conflicts Of Interest; Financial Markets; Financial Institutions; Stocks; Financial Services Industry; United States
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Groysberg, Boris, Paul M. Healy, Georgios Serafeim, Devin Shanthikumar, and Gui Yang. "The Stock Selection and Performance of Buy-Side Analysts." Harvard Business School Working Knowledge (March 20, 2012).
  • July 2005 (Revised September 2016)
  • Case

24 Hour Fitness (A): The Rise, 1983–2004

By: John R. Wells, Elizabeth A. Raabe and Gabriel Ellsworth
In October 2004, Mark S. Mastrov, CEO of 24 Hour Fitness, reflected on how far his company had come in just over 20 years. From humble beginnings in 1983 in San Leandro, California, 24 Hour Fitness had grown to become the largest privately-owned health-club chain in... View Details
Keywords: 24 Hour Fitness; Mark Mastrov; Health Clubs; Fitness; Gyms; Chain; Weight Loss; Exercise; Personal Training; Retention; Sales Force Compensation; Incentive Systems; Buildings and Facilities; Business Growth and Maturation; Business Model; For-Profit Firms; Customers; Customer Focus and Relationships; Customer Satisfaction; Private Equity; Revenue; Geographic Scope; Multinational Firms and Management; Nutrition; Business History; Employees; Recruitment; Selection and Staffing; Human Capital; Business or Company Management; Goals and Objectives; Growth and Development Strategy; Marketing; Operations; Service Operations; Private Ownership; Problems and Challenges; Sales; Salesforce Management; Sports; Strategy; Business Strategy; Competition; Competitive Advantage; Competitive Strategy; Corporate Strategy; Expansion; Segmentation; Information Technology; Internet; Technology Platform; Web; Web Sites; Capital Structure; Performance; Organizational Structure; Organizational Culture; Health Industry; United States; California; San Francisco
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Wells, John R., Elizabeth A. Raabe, and Gabriel Ellsworth. "24 Hour Fitness (A): The Rise, 1983–2004." Harvard Business School Case 706-404, July 2005. (Revised September 2016.)
  • December 1990 (Revised December 1993)
  • Supplement

Australian Paper Manufacturers (B)

By: David M. Upton and Joshua D. Margolis
Describes events that occur after the decision point in Australian Paper Manufacturers (A). With these facts and more detailed market projections, this case intensifies the long-term financial, strategic, and ethical decisions confronting the invader. View Details
Keywords: Forecasting and Prediction; Finance; Strategy; Ethics; Pulp and Paper Industry; Australia
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Upton, David M., and Joshua D. Margolis. "Australian Paper Manufacturers (B)." Harvard Business School Supplement 691-043, December 1990. (Revised December 1993.)

    Debora L. Spar

    Debora Spar is the Jaime and Josefina Chua Tiampo Professor of Business Administration at Harvard Business School and Senior Associate Dean for Business and Global Society. Her current research focuses on issues of gender and technology, and the interplay between... View Details

    Keywords: biotechnology; broadcasting; communications; entertainment; federal government; health care; information; internet; music; pharmaceuticals
    • 12 PM – 1 PM EST, 10 Nov 2016
    • Webinars: Trending@HBS

    Impact Investing: Challenges and Opportunities

    Never has there been a time when so many believed in both the ability and responsibility of the private sector to combat the world's greatest social challengesfrom poverty to climate change to accessible health care. Recent years have seen the creation of thousands of... View Details
    • 12 Jul 2016
    • First Look

    July 12, 2016

    forecasts as an input into the government budgeting-making process would probably reduce official forecast errors for budget deficits. Download working paper: https://www.hbs.edu/faculty/Pages/item.aspx?num=51324 College Tuition, Public View Details
    Keywords: Sean Silverthorne
    • 2021
    • Working Paper

    The Project on Impact Investments' Impact Investment Database

    By: M. Diane Burton, Shawn Cole, Abhishek Dev, Christina Jarymowycz, Leslie Jeng, Josh Lerner, Fanele Mashwama, Yue (Cynthia) Xu and T. Robert Zochowski
    Impact investing has grown significantly over the past 15 years. From a niche investing segment with only $25 billion AUM in 2013 (WEF 2013), it experienced double-digit growth and developed into a market with an estimated $502 billion AUM (Mudaliapar and Dithrich... View Details
    Keywords: Impact Investing; Investment; Analytics and Data Science; Analysis
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    Burton, M. Diane, Shawn Cole, Abhishek Dev, Christina Jarymowycz, Leslie Jeng, Josh Lerner, Fanele Mashwama, Yue (Cynthia) Xu, and T. Robert Zochowski. "The Project on Impact Investments' Impact Investment Database." Harvard Business School Working Paper, No. 20-117, May 2020. (Revised August 2021.)
    • 28 May 2024
    • In Practice

    Job Search Advice for a Tough Market: Think Broadly and Stay Flexible

    New graduates entering the job market will face a very different landscape from even a year ago, with a murky economy and potentially more limited career prospects. Though unemployment figures in the US remain near historically low... View Details
    Keywords: by Rachel Layne
    • November 2001
    • Case

    Lakeside

    By: Michael A. Wheeler
    This case presents an ethical choice: How should a prospective buyer respond when a homeowner quotes a price that the buyer knows is significantly below market value? The case describes a private transaction in which the prospective seller is fully competent mentally... View Details
    Keywords: Ethics; Price; Negotiation Process; Property; Risk and Uncertainty; Real Estate Industry
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    Wheeler, Michael A. "Lakeside." Harvard Business School Case 902-104, November 2001.
    • July 2005 (Revised September 2020)
    • Case

    The U.S. Current Account Deficit

    By: Laura Alfaro, Rafael Di Tella, Ingrid Vogel, Renee Kim, Sarah Jeong, Matthew Johnson and Jonathan Schlefer
    Investors and policymakers throughout the world were confronted with the risk of painful economic consequences arising from the large U.S. current account deficit. In 2007, the U.S. current account deficit was $731 billion, equivalent to 5.3% of GDP. The implications... View Details
    Keywords: World Economy; Macroeconomics; Borrowing and Debt; Currency; Foreign Direct Investment; Business and Government Relations; United States
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    Alfaro, Laura, Rafael Di Tella, Ingrid Vogel, Renee Kim, Sarah Jeong, Matthew Johnson, and Jonathan Schlefer. "The U.S. Current Account Deficit." Harvard Business School Case 706-002, July 2005. (Revised September 2020.)
    • March 1998 (Revised June 1998)
    • Case

    Coming to Grips with Deregulation: Bay State Gas

    In 1995, CEO Roger Young made a surprising decision to bring in Joel Singer, an outsider with an MBA, to lead Bay State through the upcoming turmoil of deregulation. Singer was convinced that in this situation where the boundaries of the industry were being defined,... View Details
    Keywords: Organizational Change and Adaptation; Corporate Strategy; Emerging Markets; Energy Industry; Massachusetts
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    Dyck, Alexander, and Indra Reinbergs. "Coming to Grips with Deregulation: Bay State Gas." Harvard Business School Case 798-058, March 1998. (Revised June 1998.)
    • June 2024
    • Article

    Information Spillovers in Experience Goods Competition

    By: Zhuoqiong Charlie Chen, Christopher Stanton and Catherine Thomas
    When experience goods compete, consuming one product can be informative about value for similar untried products. We study a two-period model of duopoly competition in markets that have this feature and where firms can price discriminate between consumers based on... View Details
    Keywords: Experience Goods; Competition; Information; Demand and Consumers; Profit; Price
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    Chen, Zhuoqiong Charlie, Christopher Stanton, and Catherine Thomas. "Information Spillovers in Experience Goods Competition." Management Science 70, no. 6 (June 2024): 3923–3950.
    • 13 Mar 2012
    • First Look

    First Look: March 13

    MaterialsFonterra David E. Bell and Mary ShelmanHarvard Business School Case 512-003 In 2011, Fonterra, the world's largest processor and exporter of dairy products, needed to reposition its business to take advantage of rising demand in View Details
    Keywords: Sean Silverthorne
    • March 2018 (Revised March 2018)
    • Teaching Note

    OpenInvest

    By: Boris Vallee and Caitlin Reimers Brumme
    Founded by a team of hedge fund and NGO alumni, OpenInvest launched its platform in 2015 to enable retail investors to tailor their portfolio to their personal values in an automated way, for instance by screening out weapon manufacturers stocks or overweighting LGBTQ... View Details
    Keywords: Socially Responsible Investing; Investing For Impact; Robo-advisors; Investment; Values and Beliefs; Customization and Personalization; Technology; Financial Services Industry
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    Vallee, Boris, and Caitlin Reimers Brumme. "OpenInvest." Harvard Business School Teaching Note 218-089, March 2018. (Revised March 2018.)

      DJ DiDonna

      Dennis “DJ” DiDonna has dedicated his career to commercializing social science research to create organizations which positively impact the world. 

      He is a Senior Lecturer in the Entrepreneurial Management Unit at Harvard Business School where he teaches the... View Details

      • March 2004 (Revised July 2004)
      • Case

      Sarbanes-Oxley Act, The

      By: Lynn S. Paine and James Weber
      Describes the evolution and passage of the Sarbanes-Oxley Act of 2002 from the perspective of the senior counsel on capital markets for the U.S. House Committee on Financial Services. View Details
      Keywords: Government Legislation; Corporate Accountability; Governance Controls; Capital Markets; Financial Reporting; Laws and Statutes; United States
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      Paine, Lynn S., and James Weber. "Sarbanes-Oxley Act, The." Harvard Business School Case 304-079, March 2004. (Revised July 2004.)
      • September 2020 (Revised July 2022)
      • Exercise

      Artea (B): Including Customer-Level Demographic Data

      By: Eva Ascarza and Ayelet Israeli
      This collection of exercises aims to teach students about 1)Targeting Policies; and 2)Algorithmic bias in marketing—implications, causes, and possible solutions. Part (A) focuses on A/B testing analysis and targeting. Parts (B),(C),(D) Introduce algorithmic bias. The... View Details
      Keywords: Targeting; Algorithmic Bias; Race; Gender; Marketing; Diversity; Customer Relationship Management; Demographics; Prejudice and Bias; Retail Industry; Apparel and Accessories Industry; Technology Industry; United States
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      Ascarza, Eva, and Ayelet Israeli. "Artea (B): Including Customer-Level Demographic Data." Harvard Business School Exercise 521-022, September 2020. (Revised July 2022.)
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