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- All HBS Web (1,163)
- Faculty Publications (307)
- December 2000
- Background Note
Online Portals
By: Thomas R. Eisenmann and Sanjay Pothen
Describes the online portal business model. Analyzes the model, focusing on the tactics used to acquire new users, turn new users into repeat visitors, and monetize user traffic. Explains portals' revenue and cost drivers and their implications for pursuing aggressive... View Details
Eisenmann, Thomas R., and Sanjay Pothen. "Online Portals." Harvard Business School Background Note 801-305, December 2000.
- March 2023 (Revised March 2023)
- Case
Roche: Innovation and Access to Healthcare
By: George Serafeim, Susanna Gallani and Benjamin Maletta
In May 2022, Roche Group, one of the largest healthcare companies in the world, hosted its first investor event focused exclusively on its efforts to impact access to healthcare. While Roche had recently set an ambitious goal to double the number of patients that had... View Details
Keywords: ESG (Environmental, Social, Governance) Performance; Sustainable Finance; Growth Strategy And Execution; Sustainability Targets; Impact Evaluation; Healthcare Access; Healthcare Innovation; Healthcare Systems; Healthcare Operations; Finance; Strategy; Health Testing and Trials; Health Care and Treatment; Growth Management; Measurement and Metrics; Innovation Strategy; Corporate Social Responsibility and Impact; Health Industry; Pharmaceutical Industry; Switzerland; North America; Europe; Asia; Latin America; Africa
Serafeim, George, Susanna Gallani, and Benjamin Maletta. "Roche: Innovation and Access to Healthcare." Harvard Business School Case 123-075, March 2023. (Revised March 2023.)
- July 2019
- Case
Christmas Inc. (A)
By: Susanna Gallani, Gregory Sabin, Lexor Adams and Nicholas Haberling
Santa Claus is facing increasing pressures to contain costs. The economic model that has worked for centuries is starting to show some cracks, to the point that he is considering outsourcing part of its toy production. Evaluating the bids his team collected from... View Details
Gallani, Susanna, Gregory Sabin, Lexor Adams, and Nicholas Haberling. "Christmas Inc. (A)." Harvard Business School Case 120-009, July 2019.
- 21 Jun 2007
- Working Paper Summaries
Multi-Sided Platforms: From Microfoundations to Design and Expansion Strategies
- September 2010
- Article
Strategies to Fight Ad-sponsored Rivals
By: Ramon Casadesus-Masanell and Feng Zhu
We analyze the optimal strategy of a high-quality incumbent that faces a low-quality ad-sponsored competitor. In addition to competing through adjustments of tactical variables such as price or the number of ads a product carries, we allow the incumbent to consider... View Details
Keywords: Strategy; Business Models; Tactics; Pricing; Business Model; Advertising; Competition; Quality; Price; Product Marketing
Casadesus-Masanell, Ramon, and Feng Zhu. "Strategies to Fight Ad-sponsored Rivals." Management Science 56, no. 9 (September 2010): 1484–1499.
- June 2009 (Revised December 2011)
- Case
Colbún—Powering Chile
By: Forest L. Reinhardt, Gustavo A. Herrero and Sanjay Patnaik
This case is about Colbún, Chile's second largest electricity generator, which is facing significant uncertainty regarding the cost and availability of alternative energy sources. Problems with the contracted supply of natural gas and the volatility of oil prices,... View Details
Keywords: Non-Renewable Energy; Globalized Markets and Industries; Governing Rules, Regulations, and Reforms; Government Legislation; Organizational Change and Adaptation; Business and Government Relations; Climate Change; Business Strategy; Energy Industry; Chile
Reinhardt, Forest L., Gustavo A. Herrero, and Sanjay Patnaik. "Colbún—Powering Chile." Harvard Business School Case 709-060, June 2009. (Revised December 2011.)
- December 2003 (Revised May 2004)
- Case
Blockbuster Inc. & Technological Substitution (A): Achieving Dominance in the Video Rental Industry
Provides a comprehensive background of the video rental industry and home entertainment giant, Blockbuster Inc. Follows the life of Blockbuster Inc. from its first days under founder Wayne Huizenga to its most recent developments under 2003 CEO John Antioco. By looking... View Details
Keywords: Risk and Uncertainty; Decisions; Technological Innovation; Competition; Change Management; Economics; Service Industry; Motion Pictures and Video Industry
Coughlan, Peter J., and Jenny Illes. "Blockbuster Inc. & Technological Substitution (A): Achieving Dominance in the Video Rental Industry." Harvard Business School Case 704-404, December 2003. (Revised May 2004.)
- 2015
- Working Paper
Executives' Financial Preferences and Shareholder Tax Outcomes
By: Gerardo Pérez Cavazos and Andreya M. Perez-Silva
We demonstrate that executives’ personal financial preferences impact both layers of shareholder taxes, corporate taxes and corporate payouts. We reconstruct executives’ insider equity portfolios to quantify their personal incentives and analyze stock sales that reveal... View Details
Keywords: Executives; Capital Gain; Dividends; Effective Tax Rate; Tax Avoidance; Taxation; Management Teams; Business and Shareholder Relations
Pérez Cavazos, Gerardo, and Andreya M. Perez-Silva. "Executives' Financial Preferences and Shareholder Tax Outcomes." Harvard Business School Working Paper, No. 16-034, September 2015.
- March 2002 (Revised January 2010)
- Case
BP and the Consolidation of the Oil Industry, 1998-2002
By: Forest L. Reinhardt, Ramon Casadesus-Masanell and David J Hanson
Examines the economics of the oil and gas industry with a focus on 1998 through 2001. Discusses the rationale behind using a growth in scale as a means to increase profitability and to gain competitive advantage. Also examines the classic strategic implications of... View Details
Keywords: Non-Renewable Energy; Growth and Development Strategy; Industry Structures; Competitive Advantage; Consolidation; Horizontal Integration; Vertical Integration; Energy Industry
Reinhardt, Forest L., Ramon Casadesus-Masanell, and David J Hanson. "BP and the Consolidation of the Oil Industry, 1998-2002." Harvard Business School Case 702-012, March 2002. (Revised January 2010.)
- May 2020
- Article
Negotiating a Better Future: How Interpersonal Skills Facilitate Inter-Generational Investment
By: Nava Ashraf, Natalie Bau, Corinne Low and Kathleen McGinn
Using a randomized control trial, we examine whether offering adolescent girls nonmaterial resources—specifically, negotiation skills—can improve educational outcomes in a low-income country. In so doing, we provide the first evidence on the effects of an intervention... View Details
Keywords: Negotiation; Competency and Skills; Training; Age; Gender; Education; Investment; Outcome or Result; Developing Countries and Economies
Ashraf, Nava, Natalie Bau, Corinne Low, and Kathleen McGinn. "Negotiating a Better Future: How Interpersonal Skills Facilitate Inter-Generational Investment." Quarterly Journal of Economics 135, no. 2 (May 2020): 1095–1151.
- 28 Aug 2012
- Working Paper Summaries
Channels of Influence
- Article
An Evaluation of Money Market Fund Reform Proposals
U.S. money market mutual funds (MMFs) are an important source of dollar funding for global financial institutions, particularly those headquartered outside the U.S. MMFs proved to be a source of considerable instability during the financial crisis of 2007–2009,... View Details
Hanson, Samuel G., David S. Scharfstein, and Adi Sunderam. "An Evaluation of Money Market Fund Reform Proposals." IMF Economic Review 63, no. 4 (November 2015): 984–1023.
Strategies to Fight Ad-sponsored Rivals
We analyze the optimal strategy of a high-quality incumbent that faces a low-quality ad-sponsored competitor. In addition to competing through adjustments of tactical variables such as price or the number of ads a product carries, we allow the incumbent to... View Details
- 23 Jan 2017
- Working Paper Summaries
Overcoming Institutional Voids: A Reputation-Based View of Long Run Survival
- December 2003 (Revised April 2004)
- Case
Blockbuster Inc. & Technological Substitution (D): The Threat of Direct Digital Distribution
Examines the emergence of technologies for delivering video content to consumer homes via direct digital distribution and investigates the strategic options facing video rental giant Blockbuster Inc. as it tries to respond to the new technological substitutes. Examines... View Details
Keywords: Organizational Change and Adaptation; Risk and Uncertainty; Decisions; Technological Innovation; Competition; Change Management; Service Industry; Motion Pictures and Video Industry
Coughlan, Peter J., and Jenny Illes. "Blockbuster Inc. & Technological Substitution (D): The Threat of Direct Digital Distribution." Harvard Business School Case 704-463, December 2003. (Revised April 2004.)
- 14 Jul 2003
- Research & Ideas
Keeping Your Balance With Customers
From product push to customer pull, technology has vastly reshaped the business transaction—and in turn, the customer's place in the value chain. Today, managing the customer relationship has become the single most important dimension of enterprise strategy. Here,... View Details
Keywords: by Robert S. Kaplan & David P. Norton
- November–December 2015
- Article
Active Postmarketing Drug Surveillance for Multiple Adverse Events
By: Joel Goh, Margrét V. Bjarnadóttir, Mohsen Bayati and Stefanos A. Zenios
Postmarketing drug surveillance is the process of monitoring the adverse events of pharmaceutical or medical devices after they are approved by the appropriate regulatory authorities. Historically, such surveillance was based on voluntary reports by medical... View Details
Keywords: Drug Surveillance; Health Care; Stochastic Models; Queueing; Diffusion Approximation; Brownian Motion; Health Care and Treatment; Analytics and Data Science; Analysis
Goh, Joel, Margrét V. Bjarnadóttir, Mohsen Bayati, and Stefanos A. Zenios. "Active Postmarketing Drug Surveillance for Multiple Adverse Events." Operations Research 63, no. 6 (November–December 2015): 1528–1546. (Finalist, 2012 INFORMS Health Applications Society Pierskalla Award.)
- May 2025
- Case
Windsurf and the AI Code Assistant Market
By: Suraj Srinivasan, Sudhanshu Nath Mishra and Radhika Kak
In April 2025, the founding team of Windsurf, an AI start-up specializing in code generation gathered in Mountain View, California, to assess its remarkable year of growth. The company had scaled from a niche GitHub Copilot alternative to a breakout player with over... View Details
- August 1995 (Revised September 1995)
- Background Note
Designing and Managing the Information Age IT Architecture
The co-evolution of technology, work, and the workforce over the past 30 years has dramatically influenced our concept of organizations and the industries within which they compete. No longer simply a tool to support "back-office" transactions, IT has become a... View Details
Applegate, Lynda M. "Designing and Managing the Information Age IT Architecture." Harvard Business School Background Note 196-005, August 1995. (Revised September 1995.)
- February 2000 (Revised April 2005)
- Case
Gray Security: Building a South African Services Firm
Describes Gray Security Services, an entrepreneurial South African firm that has recently gone through a financial restructuring with the help of Brait Capital Partners, a private equity firm. Gray provides complete security services to companies in South Africa, other... View Details
Keywords: Initial Public Offering; Entrepreneurship; Equity; Growth and Development Strategy; Service Industry; South Africa
Kuemmerle, Walter, William J. Coughlin Jr., and Chad S Ellis. "Gray Security: Building a South African Services Firm." Harvard Business School Case 800-193, February 2000. (Revised April 2005.)