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- 2024
- Working Paper
Scaling Core Earnings Measurement with Large Language Models
By: Matthew Shaffer and Charles CY Wang
We study the application of large language models (LLMs) to the estimation of core earnings, i.e., a firm's persistent profitability from its core business activities. This construct is central to investors' assessments of economic performance and valuations. However,... View Details
Keywords: Large Language Models; AI and Machine Learning; Accounting; Profit; Corporate Disclosure; Analytics and Data Science; Measurement and Metrics
Shaffer, Matthew, and Charles CY Wang. "Scaling Core Earnings Measurement with Large Language Models." Working Paper, November 2024.
- November 2024
- Article
On the Representativeness of Voter Turnout
By: Louis Kaplow and Scott Duke Kominers
Prominent theory research on voting analyzes a variety of models in which expected pivotality drives voters' turnout decisions and hence determines voting outcomes. It is recognized, however, that such work is at odds with Downs's paradox: in practice, many... View Details
Keywords: Voting Behavior; Voting Turnout; Paradox Of Voting; Pivotality; Elections; Model; Theory; Governance Transparency; Government; Democracy; Turnout; Voting; Governance; Government and Politics; Public Sector; Political Elections
Kaplow, Louis, and Scott Duke Kominers. "On the Representativeness of Voter Turnout." Journal of Law & Economics 67, no. 4 (November 2024): 879–904.
- November 2024
- Article
The Health Costs of Cost Sharing
By: Amitabh Chandra, Evan Flack and Ziad Obermeyer
What happens when patients suddenly stop their medications? We study the health consequences of drug interruptions caused by large, abrupt, and arbitrary changes in price. Medicare’s prescription drug benefit as-if-randomly assigns 65-year-olds a drug budget as a... View Details
Chandra, Amitabh, Evan Flack, and Ziad Obermeyer. "The Health Costs of Cost Sharing." Quarterly Journal of Economics 139, no. 4 (November 2024): 2037–2082.
- October 2024 (Revised December 2024)
- Case
Kering Eyewear
By: Rohit Deshpandé, Dante Roscini and Elena Corsi
In June 2024, Roberto Vedovotto, CEO of Kering Eyewear, prepared to discuss the future of the recently acquired brands LINDBERG, a Danish optical eyewear brand, and Maui Jim, an American sunglasses brand. Vedovotto founded Kering Eyewear in 2014, convincing... View Details
Keywords: Marketing Strategy; Brands and Branding; Product Marketing; Mergers and Acquisitions; Business or Company Management; Growth and Development Strategy; Luxury; Fashion Industry; Apparel and Accessories Industry; Consumer Products Industry; Italy; Europe; China
Deshpandé, Rohit, Dante Roscini, and Elena Corsi. "Kering Eyewear." Harvard Business School Case 525-027, October 2024. (Revised December 2024.)
- October 2024
- Module Note
Purpose of the Firm
By: Debora L. Spar and Julia M. Comeau
Purpose of the Firm (PoF) is a short module designed to explore how, and under what circumstances, business leaders can harness the power of capitalism and markets to “make a difference in the world”—that is, to address a significant societal problem as a commercial... View Details
Keywords: Social Accounting; Purpose; Corporate Social Responsibility and Impact; Social Enterprise; Mission and Purpose; Leadership
Spar, Debora L., and Julia M. Comeau. "Purpose of the Firm." Harvard Business School Module Note 325-035, October 2024.
- October 16, 2024
- Article
Physicians Can Help Cut Costs. They Just Need the Right Incentives.
By: Susanna Gallani and Derek A. Haas
Health care organizations have long tried to enlist physicians in their effort to control or reduce costs. One effective means for doing so is to create an incentive system that rewards physicians for their contributions. To design such a system, organizations should... View Details
Gallani, Susanna, and Derek A. Haas. "Physicians Can Help Cut Costs. They Just Need the Right Incentives." Harvard Business Review Digital Articles (October 16, 2024).
- October 2024
- Course Overview Note
Risks, Opportunities, and Investments in the Era of Climate Change (ROICC)
By: George Serafeim
This course overview note introduces the course Risks, Opportunities, and Investments in the Era of Climate Change to students. View Details
Keywords: Environment; Innovation; Technology; General Management; Organizational Transformations; Investments; Entrepreneurship; Strategy; Finance; Accounting; Leadership; Climate Change; Environmental Sustainability; Management
Serafeim, George. "Risks, Opportunities, and Investments in the Era of Climate Change (ROICC)." Harvard Business School Course Overview Note 125-052, October 2024.
- 2024
- Working Paper
Ponzi Funds
By: Philippe van der Beck, Jean-Philippe Bouchaud and Dario Villamaina
Many active funds hold concentrated portfolios. Flow-driven trading causes price pressure, which
pushes up the funds’ existing positions resulting in realized returns. We decompose fund returns
into a price pressure (self-inflated) and a fundamental component and... View Details
Keywords: Investment Funds; Investment Portfolio; Investment Return; Price Bubble; Financial Reporting; Financial Liquidity
van der Beck, Philippe, Jean-Philippe Bouchaud, and Dario Villamaina. "Ponzi Funds." Working Paper, May 2024.
- 2024
- Working Paper
When Batteries Meet Hydrogen: Dual-Storage Investments for Load-Shifting Purposes
By: Christian Kaps and Simone Marinesi
Power systems account for nearly 40% of global emissions. As the world tries to reduce emissions by increasing renewable penetration, storage technologies are playing an increasingly important role in matching variable renewable supply with demand. Batteries have... View Details
Keywords: Environmental Sustainability; Renewable Energy; Transition; Utilities Industry; Battery Industry
Kaps, Christian, and Simone Marinesi. "When Batteries Meet Hydrogen: Dual-Storage Investments for Load-Shifting Purposes." Working Paper, October 2024.
- 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; Accounting 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.
- September 20, 2024
- Article
It’s Time to Unbundle ESG
By: Aaron K. Chatterji and Michael W. Toffel
ESG is at an inflection point. It has come to represent a broad and inchoate aspiration for what business should be doing beyond maximizing shareholder value. With ESG advocates on the defensive, business leaders need a new roadmap to determine which factors to... View Details
Keywords: ESG; ESG (Environmental, Social, Governance) Performance; ESG Ratings; ESG Reporting; ESG Disclosure; Sustainability; Climate; Climate Finance; Climate Risk; Social Accounting; Investment; Governance; Safety; Climate Change; Environmental Sustainability; Corporate Social Responsibility and Impact; Financial Services Industry
Chatterji, Aaron K., and Michael W. Toffel. "It’s Time to Unbundle ESG." Harvard Business Review (website) (September 20, 2024).
- September 2024
- Exercise
Assessing the Value of Unifying and De-Duplicating Customer Data
By: Elie Ofek and Hema Yoganarasimhan
This exercise provides an opportunity for students to gain hands on experience with assessing the value of unifying various customer databases that a firm may have (e.g., across the different brands it markets) and of properly identifying customers to avoid duplication... View Details
Keywords: Customer Relationship Management; Measurement and Metrics; Analytics and Data Science; Value
Ofek, Elie, and Hema Yoganarasimhan. "Assessing the Value of Unifying and De-Duplicating Customer Data." Harvard Business School Exercise 525-023, September 2024.
- 2024
- Working Paper
Fire Sales of Safe Assets
By: Gabor Pinter, Emil Siriwardane and Danny Walker
We use trade-level data to study price pressure effects in the UK gilt market from September to October 2022. During this period, forced sales by liability-driven investment funds (LDIs) led to price discounts on the order of 10%, accounting for roughly half the total... View Details
Pinter, Gabor, Emil Siriwardane, and Danny Walker. "Fire Sales of Safe Assets." Harvard Business School Working Paper, No. 25-015, September 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
Finance Without Exotic Risk
By: Pedro Bordalo, Nicola Gennaioli, Rafael La Porta and Andrei Shleifer
We address the joint hypothesis problem in cross-sectional asset pricing by using measured analyst expectations of earnings growth. We construct a firm-level measure of Expectations Based Returns (EBRs) that uses analyst forecast errors and revisions and shuts down any... View Details
Bordalo, Pedro, Nicola Gennaioli, Rafael La Porta, and Andrei Shleifer. "Finance Without Exotic Risk." NBER Working Paper Series, No. 33004, September 2024.
- August 2024
- Case
The Walt Disney Company: Management Guidance
By: Joseph Pacelli and James Weber
In November 2023, financial analyst Aurora Fee was forecasting The Walt Disney Company’s earnings and stock price, with the goal of providing an investment recommendation to her clients. Disney, one of the world’s largest media and entertainment companies, had just... View Details
Keywords: Valuation; Accounting; Investment; Communication; Forecasting and Prediction; Business Earnings; Growth and Development Strategy; Financial Services Industry; Entertainment and Recreation Industry; United States
Pacelli, Joseph, and James Weber. "The Walt Disney Company: Management Guidance." Harvard Business School Case 125-027, August 2024.
- August 2024
- Technical Note
Introduction to Data Analysis in Python
By: Michael Parzen and Jo Ellery
This note introduces Python as a tool for data science, including the Pandas library for data analysis. View Details
Keywords: Analytics and Data Science
Parzen, Michael, and Jo Ellery. "Introduction to Data Analysis in Python." Harvard Business School Technical Note 625-016, August 2024.
- 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.
- 2024
- Article
Neyman Meets Causal Machine Learning: Experimental Evaluation of Individualized Treatment Rules
By: Michael Lingzhi Li and Kosuke Imai
A century ago, Neyman showed how to evaluate the efficacy of treatment using a randomized experiment under a minimal set of assumptions. This classical repeated sampling framework serves as a basis of routine experimental analyses conducted by today’s scientists across... View Details
Li, Michael Lingzhi, and Kosuke Imai. "Neyman Meets Causal Machine Learning: Experimental Evaluation of Individualized Treatment Rules." Journal of Causal Inference 12, no. 1 (2024).