Publications
Publications
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- All HBS Web
(10,559)
- Faculty Publications (3,608)
- February 2025 (Revised August 2025)
- Case
Accounting for Bitcoin at Block
By: Charles C.Y. Wang, Seil Kim and Sa-Pyung Sean Shin
Abstract: This case explores Block Inc.'s accounting practices for Bitcoin transactions and their impact on financial reporting. Following a 10% stock price drop after missing revenue estimates in Q3 2024, Block faced scrutiny over its Bitcoin-driven revenue model.... View Details
- February 2025
- Case
K Health: Scaling an AI Medical Clinic
By: Iavor I Bojinov, Karim R. Lakhani, Sarah Sasso and Carin-Isabel Knoop
K Health, an AI-driven healthcare platform, faced the challenge of scaling its operations to reach 10 million annual visits within two years. Founded in 2016 with the vision of leveraging AI and data to improve healthcare accessibility, the company evolved from a... View Details
- February 21, 2025
- Article
How a Company’s Ownership Model Shapes the Mistakes It Makes
By: Josh Baron
Why do some companies continue to thrive for decades and others die after an initial run of success? Like many kinds of accidents, company failure is generally the consequence of cascading effects that combine to overwhelm a previously effective strategy. But the... View Details
- February 2025
- Case
K Health: Building an AI Physician Model
By: Iavor I. Bojinov, Karim R. Lakhani, Sarah Sasso and Carin-Isabel Knoop
Allon Bloch, CEO and cofounder of K Health, encountered a number of challenges and opportunities to navigate as the company prepared to launch its AI-driven healthcare platform in the U.S. in 2018. The case examines the potential of artificial intelligence to improve... View Details
- February 2025
- Tutorial
Preparing Business Leaders for an Era of Climate Instability: Understanding and Managing Physical Climate Risk
By: Michael W. Toffel and Spencer Glendon
In this compelling video, Spencer Glendon, founder of Probable Futures and Executive Fellow at Harvard Business School, describes the profound implications of climate change for businesses, the economy, and societies around the world. Drawing from his background in... View Details
- 2025
- Working Paper
Is Love Blind? AI-Powered Trading with Emotional Dividends
By: De-Rong Kong and Daniel Rabetti
We leverage the non-fungible tokens (NFTs) setting to assess the valuation of emotional dividends (LOVE), a long-standing empirical challenge in private-value markets such as art, antiques, and collectibles. Having created and validated our proxy, we use deep learning... View Details
- 2025
- Working Paper
Tax Planning, Illiquidity, and Credit Risks: Evidence from DeFi Lending
By: Lisa De Simone, Peiyi Jin and Daniel Rabetti
This study establishes a plausible causal link between tax-planning-induced illiquidity and credit risks in lending markets. Exploiting an exogenous tax shock imposed by the Internal Revenue Service (IRS) on cryptocurrency gains, along with millions of transactions in... View Details
- February 2025
- Supplement
eBee: Affordable Mobility for Africa
By: Ramon Casadesus-Masanell, Gamze Yucaoglu and Jordan Mitchell
The case opens in March 2023, as Sten van der Ham and Jaap Maljers, CEO and co-founder of eBee, an electric bike (e-bike) company in Africa, are contemplating the different avenues for growth and path to profitability for the young and ambitious company. In 2023, the... View Details
- February 2025
- Case
Doing Business in Kigali, Rwanda
By: Andy Zelleke, Martin A. Sinozich, Julianne Bliss and Choetsow Tenzin
Rwanda’s transformation from a post-genocide recovery effort to one of Africa’s fastest-growing economies presents a compelling case for investors and business leaders. With an ambitious Vision 2050 strategy, Kigali has emerged as a regional hub for trade, innovation,... View Details
- 2025
- Working Paper
Dynamic Personalization with Multiple Customer Signals: Multi-Response State Representation in Reinforcement Learning
Reinforcement learning (RL) offers potential for optimizing sequences of customer interactions by modeling the relationships
between customer states, company actions, and long-term value. However, its practical implementation often faces significant
challenges.... View Details
- 2025
- Working Paper
A Cognitive Theory of Reasoning and Choice
By: Pedro Bordalo, Nicola Gennaioli, Giacomo Lanzani and Andrei Shleifer
We present a theory of decisions in which attention to the features of choice options is determined by the decision maker's categorization of the current choice problem in a set of problems she solved in the past. Categorization depends on goal-relevant as well as... View Details
- February 2025
- Article
Sale of Private Equity–Owned Physician Practices and Physician Turnover
By: Victoria Berquist, Lev Klarnet and Leemore Dafny
Private equity (PE) ownership of physician practices is increasing, with owners targeting sales, or exits, in 3 to 7 years. Little is known about the association of exit with physician retention and subsequent employment. Using panel data over the period 2014-2020, we... View Details
- January–March 2025
- Article
Transitioning from Responsible and Reactive to Deeply Responsible and Proactive International Business
By: Geoffrey G. Jones, Teresa da Silva Lopes, Pavida Pananond, Rob van Tulder, Noemi Sinkovics and Rudolf R. Sinkovics
This article aims to explore the role of multinational enterprises in addressing grand societal challenges, emphasizing the need for integrating environmental and social aspects into business models. It offers an analysis of how principles and values can guide engaged... View Details
- 2025
- Working Paper
Technology Choice, Spillovers, and the Concentration of R&D
By: Todd A. Lensman
The direction of innovation shapes both current technologies and future innovation
opportunities, as firms acquire expertise and create public knowledge through discovery.
But how do firms choose which technologies to develop? Do they ever fail to exploit... View Details
- January 2025 (Revised March 2025)
- Case
Thomas Müller: Mr. Bayern Munich
By: Boris Groysberg, Sascha L. Schmidt, Alexander Liebhart and Sarah Abbott
In 2024, FC Bayern Munich superstar Thomas Müller announced his retirement from German national football. His contract with Bayern Munich runs through the end of the 2024-25 season. In 2025, Müller reflects on his long career in football, on the skills that have driven... View Details
Keywords: Soccer; Football; Data Science And Analytics Management; Bundesliga; Sports Data; ＂Sports Organizations,; Career Changes And Transitions; Career Management; Retirement Transition; Skills Development; Analysis; Competency and Skills; Decision Making; Performance; Personal Development and Career; Retirement; Transition; Sports Industry; Germany
- January 2025
- Supplement
Colbún’s Angostura Dam Project (B)
By: James K. Sebenius and Nicolas Andrade
The A case describes Colbún Chile’s plans for the Angostura dam in the Bío Bío River, a hydroelectric construction venture with major challenges given the region’s history of indigenous resistance. This context was especially unfavorable given the highly contentious... View Details
- January 2025 (Revised January 2025)
- Case
Colbún's Angostura Dam Project (A)
By: James K. Sebenius and Nicolas Andrade
The A case describes Colbún Chile’s plans for the Angostura dam in the Bío Bío River, a hydroelectric construction venture with major challenges given the region’s history of indigenous resistance. This context was especially unfavorable given the highly contentious... View Details
- January 2025
- Case
Hebbia: Redefining Productivity for Knowledge Workers Using AI
By: Suraj Srinivasan and Minoshka Narayan
In early 2025, George Sivulka, founder and CEO of Hebbia, reflected on the company’s rapid ascent as a pioneer in GenAI-powered productivity tools for knowledge workers. With its proprietary technology, Hebbia had redefined information retrieval and analysis and earned... View Details
Keywords: Transformation; Customer Relationship Management; AI and Machine Learning; Innovation and Management; Innovation Strategy; Service Delivery; Technological Innovation; Growth and Development Strategy; Competitive Strategy; Banking Industry; Financial Services Industry; Technology Industry; United States; New York (city, NY)
- January 2025 (Revised April 2025)
- Case
Duolingo: On a 'Streak'
By: Jeffrey F. Rayport, Nicole Tempest Keller and Nicole Luo
In December 2024, Severin Hacker, Co-Founder and Chief Technology Officer of Duolingo, reflected on the remarkable evolution of the language-learning app he helped launch in 2011. As the #1 most downloaded education app in the world, Duolingo had over 100 million... View Details
- January 2025
- Technical Note
AI vs Human: Analyzing Acceptable Error Rates Using the Confusion Matrix
By: Tsedal Neeley and Tim Englehart
This technical note introduces the confusion matrix as a foundational tool in artificial intelligence (AI) and large language models (LLMs) for assessing the performance of classification models, focusing on their reliability for decision-making. A confusion matrix... View Details