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- All HBS Web
(3,908)
- Faculty Publications (977)
- October 2024
- Article
Medicare Part D Protected-Class Policy Is Associated with Lower Drug Rebates
By: Pragya Kakani, Michael Anne Kyle, Amitabh Chandra and Luca Maini
Medicare Part D does not allow plans to exclude drugs in six protected classes from their formularies, which may limit plans’ ability to negotiate rebates and lead to higher spending. We estimated the association between protected-class status, US-level estimated... View Details
Keywords: Insurance; Health Care and Treatment; Governing Rules, Regulations, and Reforms; United States
Kakani, Pragya, Michael Anne Kyle, Amitabh Chandra, and Luca Maini. "Medicare Part D Protected-Class Policy Is Associated with Lower Drug Rebates." Health Affairs 43, no. 10 (October 2024): 1420–1427.
- October 2024
- Article
Global Mobile Inventors
By: Dany Bahar, Prithwiraj Choudhury, Ernest Miguelez and Sara Signorelli
The number of Global Mobile Inventors (GMIs), inventors moving across borders during their
career, has increased more than tenfold over the past two decades, and the corridors of mobility
have shifted towards a growing presence of emerging markets. We document that... View Details
Bahar, Dany, Prithwiraj Choudhury, Ernest Miguelez, and Sara Signorelli. "Global Mobile Inventors." Art. 103357. Journal of Development Economics 171 (October 2024).
- Fall, 2024
- Article
Sixty Years of the Voting Rights Act: Progress and Pitfalls
By: Andrea Bernini, Giovanni Facchini, Marco Tabellini and Cecilia Testa
We review the literature on the effects of the 1965 Voting Rights Act (VRA), which removed formal restrictions to Black political participation. After a brief description of racial discrimination suffered by Black Americans since Reconstruction, we introduce the goals... View Details
Keywords: Prejudice and Bias; Equality and Inequality; Race; Political Elections; Voting; Policy; Outcome or Result; Government Legislation
Bernini, Andrea, Giovanni Facchini, Marco Tabellini, and Cecilia Testa. "Sixty Years of the Voting Rights Act: Progress and Pitfalls." Oxford Review of Economic Policy 40, no. 3 (Fall, 2024): 486–497.
- September 2024 (Revised March 2025)
- Supplement
Wemade: (Re)Establishing Trust in Blockchain Games (B)
By: Jung Koo Kang, Charles C.Y. Wang, David Allen and Kwangmoon So
This supplement reviews Wemade's efforts to rebuild confidence in its business after its WEMIX coin was delisted from the major South Korean cryptocurrency exchanges on December 8, 2022. It outlines Wemade's strategy of transparency, which included partnerships with... View Details
Keywords: Blockchain; Cryptocurrency; Crypto Economy; Accounting; Financial Reporting; Revenue Recognition; Games, Gaming, and Gambling; Corporate Disclosure; Information Technology; Financial Markets; Governance; Accounting Industry; Video Game Industry; South Korea
Kang, Jung Koo, Charles C.Y. Wang, David Allen, and Kwangmoon So. "Wemade: (Re)Establishing Trust in Blockchain Games (B)." Harvard Business School Supplement 125-018, September 2024. (Revised March 2025.)
- September 2024
- Case
Faena: Magic in Mid-Miami Beach
By: Robin Greenwood, Denise Han, Dave Habeeb and Ruth Page
The link to this multimedia case should be provided to students in advance as preparation for classroom case discussion.
This multimedia case follows real estate developer Alan Faena as he expanded his luxury development business from Argentina to the... View Details
This multimedia case follows real estate developer Alan Faena as he expanded his luxury development business from Argentina to the... View Details
Keywords: Development; Real Estate; Hotels; Luxury; Urban Development; Sustainable Cities; Design; Markets; Transformation; Cost vs Benefits; Economic Growth; Private Sector; Public Sector; Economic Slowdown and Stagnation; Cultural Entrepreneurship; Financial Strategy; Investment Return; Geographic Location; Urban Scope; Corporate Accountability; Collaborative Innovation and Invention; Business and Community Relations; Business and Government Relations; Opportunities; Culture; Value Creation; Real Estate Industry; Entertainment and Recreation Industry; Florida; Miami; Argentina; Buenos Aires
Greenwood, Robin, Denise Han, Dave Habeeb, and Ruth Page. "Faena: Magic in Mid-Miami Beach." Harvard Business School Multimedia/Video Case 225-701, September 2024.
- 2024
- Working Paper
Changing Perceptions and Post-Pandemic Monetary Policy
By: Michael D. Bauer, Carolin Pflueger and Adi Sunderam
We document that the Fed’s perceived monetary policy response to inflation shifted materially over the post-pandemic period. In forward-looking policy rules estimated from surveys of macroeconomic forecasters, the inflation coefficient rose significantly after liftoff... View Details
Bauer, Michael D., Carolin Pflueger, and Adi Sunderam. "Changing Perceptions and Post-Pandemic Monetary Policy." Working Paper, September 2024.
- September 2024 (Revised October 2024)
- Case
River Remedy: Navigating Mississippi’s Medical Marijuana Market
By: Robin Greenwood, Richard S. Ruback and Robert Ialenti
MBA student William Chism, the founder of a fully integrated medical marijuana company based in Mississippi, must respond to a significant disruption in the fledgling industry. In late 2023, Rapid Analytics, one of two active licensed testing facilities, has its... View Details
Keywords: Plant-Based Agribusiness; Business Growth and Maturation; Forecasting and Prediction; Microeconomics; Local Range; Government Legislation; Demand and Consumers; Supply and Industry; Competitive Strategy; Governance Controls; Agriculture and Agribusiness Industry; Consumer Products Industry; Mississippi
Greenwood, Robin, Richard S. Ruback, and Robert Ialenti. "River Remedy: Navigating Mississippi’s Medical Marijuana Market." Harvard Business School Case 225-011, September 2024. (Revised October 2024.)
- September 2024
- Article
Activist Directors: Determinants and Consequences
By: Ian D. Gow, Sa-Pyung Sean Shin and Suraj Srinivasan
This paper examines determinants and consequences of hedge fund activism, focusing on activist directors, i.e., directors appointed in response to activist demands. Using a sample of 3,259 activism events from 2004 to 2016, we identify 1,623 activist directors.... View Details
Gow, Ian D., Sa-Pyung Sean Shin, and Suraj Srinivasan. "Activist Directors: Determinants and Consequences." Review of Accounting Studies 29, no. 3 (September 2024): 2578–2616.
- 2024
- Working Paper
Bounded Solidarity: The Role of Migrants in Shaping Entrepreneurial Ventures
By: Astrid Marinoni and Prithwiraj Choudhury
We explore a previously unexamined aspect of migrants’ contributions to local entrepreneurial
ecosystems: the value created by cooperative interactions between migrants and locals in entrepreneurial
ventures. Specifically, we analyze whether mixed teams composed of... View Details
Marinoni, Astrid, and Prithwiraj Choudhury. "Bounded Solidarity: The Role of Migrants in Shaping Entrepreneurial Ventures." Harvard Business School Working Paper, No. 25-019, September 2024.
- 2024
- Working Paper
The New Digital Divide
By: Mayana Pereira, Shane Greenstein, Raffaella Sadun, Prasanna Tambe, Lucia Ronchi Darre, Tammy Glazer, Allen Kim, Rahul Dodhia and Juan Lavista Ferres
We build and analyze new metrics of digital usage that leverage telemetry data collected by Microsoft during operating system updates across forty million Windows devices in U.S. households. These measures of US household digital usage are much more comprehensive than... View Details
Keywords: Mathematical Methods; Measurement and Metrics; Geographic Location; Behavior; Technology Adoption; Demographics
Pereira, Mayana, Shane Greenstein, Raffaella Sadun, Prasanna Tambe, Lucia Ronchi Darre, Tammy Glazer, Allen Kim, Rahul Dodhia, and Juan Lavista Ferres. "The New Digital Divide." NBER Working Paper Series, No. 32932, September 2024.
- August 2024
- Case
Zipline: Expanding the World's Largest Autonomous Drone Delivery Network
By: Tarun Khanna and George Gonzalez
Zipline initially established the world's largest logistics network in Rwanda and Ghana by delivering medical supplies to hospitals via automated drones from a centralized hub. The company is now looking to expand to the U.S. home delivery market and designed a... View Details
Keywords: Governing Rules, Regulations, and Reforms; Growth and Development Strategy; Logistics; Expansion; Air Transportation; Business Model; Rwanda; Ghana; United States
Khanna, Tarun, and George Gonzalez. "Zipline: Expanding the World's Largest Autonomous Drone Delivery Network." Harvard Business School Case 725-381, August 2024.
- August 2024
- Case
Circle: Reinventing the Future of Money
By: Shikhar Ghosh and Shweta Bagai
In early 2024, Circle Internet Financial's leadership team gathered to discuss the company's strategic path as it prepared for an IPO. Founded in 2013 by Jeremy Allaire, Circle had emerged as a pioneer in digital finance through its USD Coin (USDC), a regulated... View Details
Keywords: Currency; Governance Compliance; Initial Public Offering; Competition; Financial Services Industry
Ghosh, Shikhar, and Shweta Bagai. "Circle: Reinventing the Future of Money." Harvard Business School Case 825-067, August 2024.
- August 2024
- Article
The Labor Market Effects of Loan Guarantee Programs
By: Jean-Noël Barrot, Thorsten Martin, Julien Sauvagnat and Boris Vallée
We investigate the labor market effects of a loan guarantee program targeting French SMEs during the financial crisis. Exploiting differences in regional treatment intensity in a border discontinuity design, we uncover a central trade-off for such interventions. While... View Details
Barrot, Jean-Noël, Thorsten Martin, Julien Sauvagnat, and Boris Vallée. "The Labor Market Effects of Loan Guarantee Programs." Review of Financial Studies 37, no. 8 (August 2024): 2315–2354.
- July 2024 (Revised January 2025)
- Case
Dynamic Pricing at Wendy's: Where's the Beef?
By: Elie Ofek, Alicia Dadlani and Martha Hostetter
In early 2024, Wendy’s new CEO announced on an earnings call that the company would install digital menus in its US locations so it could begin testing dynamic pricing—changing prices up or down in response to shifts in supply and demand – as well as allow engaging in... View Details
Keywords: Dynamic Pricing; Marketing Strategy; Price; Technology Adoption; Consumer Behavior; AI and Machine Learning; Customer Focus and Relationships; Policy; Food and Beverage Industry
Ofek, Elie, Alicia Dadlani, and Martha Hostetter. "Dynamic Pricing at Wendy's: Where's the Beef?" Harvard Business School Case 525-010, July 2024. (Revised January 2025.)
- July, 2024
- Article
Consumer Protection in an Online World: An Analysis of Occupational Licensing
By: Chiara Farronato, Andrey Fradkin, Bradley Larsen and Erik Brynjolfsson
We study the demand and supply implications of occupational licensing using transaction-level data from a large online platform for home improvement services. We find that demand is more responsive to a professional's reviews than to the professional's... View Details
Keywords: Occupational Licensing; Consumer Protection; Perception; Experience and Expertise; Public Opinion; Governing Rules, Regulations, and Reforms; Demand and Consumers
Farronato, Chiara, Andrey Fradkin, Bradley Larsen, and Erik Brynjolfsson. "Consumer Protection in an Online World: An Analysis of Occupational Licensing." American Economic Journal: Applied Economics 16, no. 3 (July, 2024): 549–579.
- July–August 2024
- Article
Doing More with Less: Overcoming Ineffective Long-Term Targeting Using Short-Term Signals
By: Ta-Wei Huang and Eva Ascarza
Firms are increasingly interested in developing targeted interventions for customers with the best response,
which requires identifying differences in customer sensitivity, typically through the conditional average treatment
effect (CATE) estimation. In theory, to... View Details
Keywords: Long-run Targeting; Heterogeneous Treatment Effect; Statistical Surrogacy; Customer Churn; Field Experiments; Consumer Behavior; Customer Focus and Relationships; AI and Machine Learning; Marketing Strategy
Huang, Ta-Wei, and Eva Ascarza. "Doing More with Less: Overcoming Ineffective Long-Term Targeting Using Short-Term Signals." Marketing Science 43, no. 4 (July–August 2024): 863–884.
- 2024
- Working Paper
The Golden Revolving Door
By: Ling Cen, Lauren Cohen, Jing Wu and Fan Zhang
Using both the onset of the US-China trade war in 2018 and the most recent Russia-Ukraine war and associated trade tensions, we show a counterintuitive pattern in global trade. Namely, while the average firm trading with these nations significantly decreases their... View Details
Cen, Ling, Lauren Cohen, Jing Wu, and Fan Zhang. "The Golden Revolving Door." NBER Working Paper Series, No. 32621, June 2024.
- 2024
- Working Paper
Webmunk: A New Tool for Studying Online Behavior and Digital Platforms
By: Chiara Farronato, Andrey Fradkin and Chris Karr
Understanding the behavior of users online is important for researchers, policymakers, and private companies alike. But observing online behavior and conducting experiments is difficult without direct access to the user base and software of technology companies. We... View Details
Farronato, Chiara, Andrey Fradkin, and Chris Karr. "Webmunk: A New Tool for Studying Online Behavior and Digital Platforms." NBER Working Paper Series, No. 32694, July 2024.
- 2024
- Working Paper
What Makes Players Pay? An Empirical Investigation of In-Game Lotteries
By: Tomomichi Amano and Andrey Simonov
In 2020, gamers spent more than $15 billion on loot boxes, lotteries of virtual items in video
games. Paid loot boxes are contentious. Game producers argue that loot boxes complement
the gameplay and expenditures on loot boxes reflect players’ enjoyment of the game.... View Details
Keywords: Consumer Behavior; Policy; Games, Gaming, and Gambling; Product Design; Ethics; Governing Rules, Regulations, and Reforms; Video Game Industry
Amano, Tomomichi, and Andrey Simonov. "What Makes Players Pay? An Empirical Investigation of In-Game Lotteries." Columbia Business School Research Paper Series, No. 4355019, June 2024.
- 2024
- Working Paper
Incrementality Representation Learning: Synergizing Past Experiments for Intervention Personalization
This paper introduces Incrementality Representation Learning (IRL), a novel multitask representation learning framework that predicts heterogeneous causal effects of marketing interventions. By leveraging past experiments, IRL efficiently designs and targets... View Details
Keywords: Heterogeneous Treatment Effect; Multi-task Learning; Representation Learning; Personalization; Promotion; Deep Learning; Field Experiments; Customer Focus and Relationships; Customization and Personalization
Huang, Ta-Wei, Eva Ascarza, and Ayelet Israeli. "Incrementality Representation Learning: Synergizing Past Experiments for Intervention Personalization." Harvard Business School Working Paper, No. 24-076, June 2024.