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Show Results For
- All HBS Web
(3,554)
- People (13)
- News (885)
- Research (2,017)
- Events (33)
- Multimedia (3)
- Faculty Publications (801)
- 13 Jul 2020
- Research & Ideas
Merck CEO Ken Frazier Discusses a COVID Cure, Racism, and Why Leaders Need to Walk the Talk
just one generation away from slavery. [div class=infogram-embed data-id=_/J7l1CMM7ky86fk3Wh7qQ][/div] Video Click Here Ken Frazier talks with Tsedal Neeley.) Interview Transcript Tsedal Neeley: Before we talk about vaccines and other... View Details
- January 2020 (Revised July 2020)
- Case
BlackRock: Linking Purpose to Profit
By: Aiyesha Dey
The case revolves around the actions that Barbara Novick, co-founder and Vice-Chair of Blackrock, and Michelle Edkins, Global Head of Investment Stewardship, would need to take in response to the controversial CEO letters from Laurence (Larry) Fink, Chairman and CEO of... View Details
Keywords: Boards Of Directors; Institutional Investors; Disclosure; Transparency; Corporate Purpose; Corporate Profits; ESG; ESG Disclosure Metrics; Corporate Sustainability; Engagement Strategy Of Institutions; Stewardship Role Of Institutions; BlackRock; Corporate Governance; Governing and Advisory Boards; Institutional Investing; Accounting; Corporate Disclosure; Mission and Purpose; Profit; Environmental Sustainability; Climate Change; Diversity; Corporate Accountability; Financial Services Industry; United States
Deshpandé, Rohit, Aiyesha Dey, and George Serafeim. "BlackRock: Linking Purpose to Profit." Harvard Business School Case 120-042, January 2020. (Revised July 2020.)
- winter 2003
- Article
Massively Categorical Variables: Revealing the Information in Zip Codes
We introduce the idea of a massively categorical variable, a variable such as zip code that takes on too many values to be treated in the standard manner, and show how to use it directly as explanatory variables in an econometric model. In an application of this... View Details
Steenburgh, Thomas J., Andrew Ainslie, and Peder Hans Engebretson. "Massively Categorical Variables: Revealing the Information in Zip Codes." Marketing Science 22, no. 1 (winter 2003): 40–57.
- Research Summary
Overview
By: Feng Zhu
Professor Zhu’s research focuses on the design of platform business models and its impact on platform performance. Platforms have become central to our economy. A platform is a product or service that enables two or more customer groups to interact. For example,... View Details
- February 2018
- Case
Infrastructure in Nigeria: Unlocking Pension Fund Investments
By: John Macomber and Pippa Tubman Armerding
The so-called “infrastructure finance gap” was a problem in Nigeria as in many parts of the world. Infrastructure projects like power plants and dams were very large capital investments that could generate long-term consistent cash flows, but their financing and... View Details
Keywords: Pension Fund Investing; Infrastucture; Power/Energy; Credit Enhancement; Infrastructure; Project Finance; Investment Funds; Emerging Markets; Nigeria; Africa
Macomber, John, and Pippa Tubman Armerding. "Infrastructure in Nigeria: Unlocking Pension Fund Investments." Harvard Business School Case 218-071, February 2018.
- June 2019 (Revised October 2019)
- Technical Note
Note on the Future of Commerce
By: William R. Kerr, Daniel O'Connor and Nathaniel Schwalb
In 2019, the retail and consumer product industries were undergoing a significant transformation. Over the past 50 years, what was once a highly fragmented industry began to consolidate, digitize, and increase convenience while lowering costs. The winning enterprises... View Details
Keywords: Trade; Demand and Consumers; Demographics; Transformation; Global Range; Organizational Change and Adaptation; Business Model; Leading Change; Retail Industry; Consumer Products Industry
Kerr, William R., Daniel O'Connor, and Nathaniel Schwalb. "Note on the Future of Commerce." Harvard Business School Technical Note 819-017, June 2019. (Revised October 2019.)
- 2023
- Working Paper
Black-box Training Data Identification in GANs via Detector Networks
By: Lukman Olagoke, Salil Vadhan and Seth Neel
Since their inception Generative Adversarial Networks (GANs) have been popular generative models across images, audio, video, and tabular data. In this paper we study whether given access to a trained GAN, as well as fresh samples from the underlying distribution, if... View Details
Olagoke, Lukman, Salil Vadhan, and Seth Neel. "Black-box Training Data Identification in GANs via Detector Networks." Working Paper, October 2023.
- 11 Jan 2010
- Research & Ideas
Mixing Open Source and Proprietary Software Strategies
competes through a proprietary business model and the other opens one module, generally the extensions. As the quality difference grows, cannibalization concerns lessen, and both competitors elect to compete... View Details
- August 2024
- Article
How Do Copayment Coupons Affect Branded Drug Prices and Quantities Purchased?
By: Leemore S. Dafny, Kate Ho and Edward Kong
Drug copayment coupons to reduce patient cost-sharing have become nearly ubiquitous for high-priced brand-name prescription drugs. Medicare bans such coupons on the grounds that they are kickbacks that induce utilization, but they are commonly used by... View Details
Keywords: Prescription Drugs; Coupons; Impact; Health Care and Treatment; Markets; Price; Spending; Pharmaceutical Industry; United States
Dafny, Leemore S., Kate Ho, and Edward Kong. "How Do Copayment Coupons Affect Branded Drug Prices and Quantities Purchased?" American Economic Journal: Economic Policy 16, no. 3 (August 2024): 314–346.
How Do Drug Copayment Coupons Affect Branded Drug Prices and Quantities Purchased?
Drug copayment coupons to reduce patient cost-sharing have become nearly ubiquitous for high-priced brand-name prescription drugs. Medicare bans such coupons on the grounds that they are kickbacks that induce utilization, but they are commonly used by... View Details
- January 2022
- Case
Somatus: Value-Based Kidney Care (A)
By: Ariel D. Stern, Robert S. Huckman and Sarah Mehta
When Dr. Ikenna Okezie founded Somatus, a value-based kidney care provider, his goal had been nothing short of transforming kidney care delivery in the United States. Rather than relying on dialysis, a costly and intensive treatment for late-stage kidney disease, the... View Details
Keywords: Business Startups; Disruption; Entrepreneurship; Health; Health Care and Treatment; Health Disorders; Medical Specialties; Innovation and Invention; Disruptive Innovation; Management; Strategy; Business Strategy; Value; Value Creation; Health Industry; United States; Virginia
Stern, Ariel D., Robert S. Huckman, and Sarah Mehta. "Somatus: Value-Based Kidney Care (A)." Harvard Business School Case 622-009, January 2022.
- 2025
- Working Paper
Management and Firm Dynamism
By: Nicholas Bloom, Jonathan S. Hartley, Raffaella Sadun, Rachel Schuh and John Van Reenen
We show better-managed firms are more dynamic in plant acquisitions, disposals, openings and closings in U.S. Census and international data. Better-managed firms also birth better-managed plants, and improve the performance of the plants they acquire. To explain these... View Details
Keywords: Management Practices; Productivity; Management Practices and Processes; Mergers and Acquisitions; Competition; Business or Company Management; Performance Productivity
Bloom, Nicholas, Jonathan S. Hartley, Raffaella Sadun, Rachel Schuh, and John Van Reenen. "Management and Firm Dynamism." Harvard Business School Working Paper, No. 25-052, April 2025.
- 19 Oct 2021
- Research & Ideas
Fed Up Workers and Supply Woes: What's Next for Dollar Stores?
question. You are definitely seeing competition for labor from Amazon, from Walmart. Dollar Tree and Family Dollar are not quite the pure model Dollar General has become, but they’re all at that low end of... View Details
- December 2021 (Revised January 2023)
- Case
Katerra (A)
By: Lindsay N. Hyde, Thomas R. Eisenmann and Tom Quinn
In April 2020, Katerra executives struggled with a series of decisions that would determine the fate of one of the best-funded construction startups in history. Katerra was founded in 2015 by technology-industry executive Michael Marks and commercial real estate... View Details
Keywords: Business Startups; Insolvency and Bankruptcy; Entrepreneurship; Failure; Construction; Real Estate Industry; Technology Industry; United States
Hyde, Lindsay N., Thomas R. Eisenmann, and Tom Quinn. "Katerra (A)." Harvard Business School Case 822-021, December 2021. (Revised January 2023.)
- Forthcoming
- Article
Slowly Varying Regression Under Sparsity
By: Dimitris Bertsimas, Vassilis Digalakis Jr, Michael Lingzhi Li and Omar Skali Lami
We consider the problem of parameter estimation in slowly varying regression models with sparsity constraints. We formulate the problem as a mixed integer optimization problem and demonstrate that it can be reformulated exactly as a binary convex optimization problem... View Details
Bertsimas, Dimitris, Vassilis Digalakis Jr, Michael Lingzhi Li, and Omar Skali Lami. "Slowly Varying Regression Under Sparsity." Operations Research (forthcoming). (Pre-published online March 27, 2024.)
- Teaching Interest
Overview
By: John F. Batter
As as Senior Lecturer I teach the EC course Law, Management and Entrepreneurship (cross-listed in the General Management and Entrepreneurial Management Units) in both the Fall and Spring semesters. While I have retired from my public and private company litigation... View Details
- September 1992 (Revised October 1992)
- Case
Acid Rain: The Southern Co. (B)
In addition to the issues of expected cost minimization elucidated in Acid Rain: The Southern Co. (A), problems involving regulatory uncertainty are critical to the firm's Clean Air Act compliance strategy. The regulatory uncertainty affects, and is affected by, the... View Details
Keywords: Energy Generation; Business Strategy; Environmental Sustainability; Cost vs Benefits; Risk and Uncertainty; Strategic Planning; Investment Return; Government Legislation; Wastes and Waste Processing; Business and Government Relations; Utilities Industry; Energy Industry; United States
Reinhardt, Forest L. "Acid Rain: The Southern Co. (B)." Harvard Business School Case 793-040, September 1992. (Revised October 1992.)
- March 2021
- Article
Assortment Rotation and the Value of Concealment
By: Kris J. Ferreira and Joel Goh
Assortment rotation—the retailing practice of changing the assortment of products offered to customers—has recently been used as a competitive advantage for both brick-and-mortar and online retailers. We focus on product categories where consumers may purchase multiple... View Details
Keywords: Assortment Optimization; Retailing; Imperfect Information; Sales; Strategy; Consumer Behavior
Ferreira, Kris J., and Joel Goh. "Assortment Rotation and the Value of Concealment." Management Science 67, no. 3 (March 2021): 1489–1507.
- January 2020 (Revised March 2020)
- Case
LOLA: Do You Know What's in Your Tampon?
By: Leonard A. Schlesinger and Aldo Sesia
LOLA is a direct-to-consumer (DTC) business launched in 2015. What started as a company to provide women with organic and transparent material-labeled tampons via a subscription model, had, by 2019 evolved to include additional menstrual and sexual wellness products.... View Details
Keywords: Direct-to-consumer; Channels; Disruption; Business Model; Brands and Branding; Internet and the Web; Strategy; Retail Industry; United States; Canada
Schlesinger, Leonard A., and Aldo Sesia. "LOLA: Do You Know What's in Your Tampon?" Harvard Business School Case 320-015, January 2020. (Revised March 2020.)