Publications
Publications
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(5,092)
- Faculty Publications (1,030)
- 2023
- Working Paper
The Equity Market Implications of the Retail Investment Boom
By: Philippe van der Beck and Coralie Jaunin
This paper quantifies the impact of Robinhood traders on the US equity market. Within a structural model, we estimate retail and institutional demand curves and derive aggregate pricing implications via market clearing. The inelastic nature of institutional demand... View Details
- 2024
- Working Paper
What Do Impact Investors Do Differently?
In recent years, impact investors – private investors who seek to generate simultaneously financial and social returns – have attracted intense interest and controversy. We analyze a novel, comprehensive data set of impact and traditional investors to assess how the... View Details
- October 2023 (Revised April 2024)
- Case
Accounting Red Flags or Red Herrings at Catalent? (A)
By: Joseph Pacelli, ZeSean Ali and Tom Quinn
Fund manager Janet Curie asked for a recommendation about the pharmaceutical company Catalent. The company seemed like a solid investment. However, a pair of research reports issued over the previous two months complicated this narrative. GlassHouse Research, a short... View Details
Keywords: Accounting Audits; Budgets and Budgeting; Earnings Management; Cost Accounting; Fair Value Accounting; Revenue Recognition; Integrated Corporate Reporting; Fairness; Moral Sensibility; Values and Beliefs; Government Legislation; Conflict of Interests; Announcements; Blogs; Debates; Investment; Trust; Business and Shareholder Relations; Pharmaceutical Industry; Accounting Industry; United States
- October 2023 (Revised March 2024)
- Case
GameStop: Social Media Finds a Cheat Code (A)
By: Joseph Pacelli and Sarah Mehta
This case covers the events leading up to the 2021 GameStop short squeeze. Using GameStop as an illustrative example, the case explores the rise in retail trading, increased financial information sharing on social media, and the gamification of investing enabled by... View Details
- October 2023 (Revised November 2023)
- Case
Rheaply: Circularity For Every Business
By: Rembrand Koning and Alicia Dadlani
In March 2023, Garry Cooper, cofounder and CEO of Chicago-based Rheaply, needed to demonstrate that Rheaply’s expanded vision could translate into building cash flows and metrics needed to raise a Series B and turn the business into a model for financial and... View Details
- October 2023
- Case
Shredder Setups or Straightlining into Risk?: Investing in What You Love
By: Lauren Cohen and Grace Headinger
Bob Hall, President of Green Gables Partners, evaluated whether to angel invest into an up-and-coming ski brand. As the son-in-law of the founder of Vera Bradley and having retired from a lengthy career on Wall Street, Hall was well-versed in both direct investing and... View Details
Keywords: Family Office; Angel Investors; Direct Investment; Family Business; Business Growth and Maturation; Small Business; Financial Strategy; Personal Finance; Investment Portfolio; Private Equity; Decision Choices and Conditions; Risk and Uncertainty; Consumer Products Industry; Montana; United States
- October 2023
- Case
Kevin O'Leary: Building a Brand in Shark-infested Waters
By: Reza Satchu and Patrick Sanguineti
For more than fifteen years, successful Canadian entrepreneur and investor Kevin O’Leary had developed his brand into a global powerhouse. Since his first appearance on the Canadian television program Dragons’ Den in 2006 and his meteoric rise to stardom through the... View Details
- 2023
- Working Paper
Interest-Rate Risk and Household Portfolios
By: Sylvain Catherine, Max Miller, James Paron and Natasha Sarin
How are households exposed to interest-rate risk? When rates fall, households face lower future expected returns but those holding long-term assets—disproportionately the wealthy and middle-aged—experience capital gains. We study the hedging demand for long-term assets... View Details
- September 2023 (Revised January 2024)
- Case
AB InBev: Brewing Up Forecasts during COVID-19
By: Mark Egan, C. Fritz Foley, Esel Cekin and Emilie Billaud
In July 2021, the CEO of AB InBev's European operations and his team strategized to position the company for success post-pandemic. As the world's largest beer company, boasting over 500 brands, revenue of $46 billion, and a workforce of 160,000 in 2020, AB InBev... View Details
Keywords: Beer; Forecasting; COVID-19; Decision; Forecasting and Prediction; Analytics and Data Science; Crisis Management; Decisions; Financing and Loans; Investment Return; Resource Allocation; Distribution; Production; Business Processes; Strategic Planning; Health Pandemics; Digital Transformation; Markets; Food and Beverage Industry; Belgium; Europe; Latin America; North and Central America
- September 2023 (Revised January 2024)
- Case
Icahn Enterprises: Ponzi Scheme or Sound Investment
By: Aiyesha Dey, Jonas Heese and James Weber
Icahn Enterprises, a publicly traded limited partnership founded and operated by famed activist investor Carl Icahn, had earned above market returns for over a decade. Between 2018 and early 2023, it had a compound annual return of 31%. Icahn invested in undervalued... View Details
- September 2023
- Teaching Note
Patagonia: 'Earth Is Now Our Only Shareholder'
By: Brian Trelstad, Nien-hê Hsieh, Michael Norris and Susan Pinckney
Teaching Note for HBS Case No. 323-057. Patagonia’s change of ownership from a privately held company to a perpetual purpose trust and 501(c)(4) nonprofit in order to use the company’s profit to fight the environmental crisis and be a model for future businesses. View Details
Keywords: Trusts; Business Ventures; Business Organization; Family Business; Restructuring; Change; Disruption; Transition; Decision Making; Ethics; Values and Beliefs; Finance; Financial Management; Governance; Corporate Governance; Investment Activism; Innovation Leadership; Labor; Law; Common Law; Management; Goals and Objectives; Organizations; Corporate Social Responsibility and Impact; Organizational Change and Adaptation; Organizational Culture; Ownership; Ownership Type; Family Ownership; Private Ownership; Social Enterprise; Nonprofit Organizations; Society; Social Issues; Wealth and Poverty; Value; Value Creation; Apparel and Accessories Industry; United States
- 2025
- Working Paper
Better Keep the Twenty Dollars: Incentivizing Innovation in Open Source
By: Annamaria Conti, Vansh Gupta, Jorge Guzman and Maria P. Roche
Open source is key to innovation yet is assumed to be done largely through intrinsic motivation. How can we incentivize it? In this paper, we examine the impact of a program providing monetary incentives to motivate innovators to contribute to open source. The Sponsors... View Details
- September 2023
- Article
Stock Price Reactions to ESG News: The Role of ESG Ratings and Disagreement
By: George Serafeim and Aaron Yoon
We investigate whether ESG ratings predict future ESG news and the associated market reactions. We find that the consensus rating predicts future news, but its predictive ability diminishes for firms with large disagreement between raters. Relation between news and... View Details
Keywords: ESG; ESG (Environmental, Social, Governance) Performance; ESG Disclosure; ESG Ratings; ESG Reporting; ESG Disclosure Metrics; Sustainability; Investments; Disagreement; Rating Disagreement; Ratings; Environmental Sustainability; Social Issues; Corporate Social Responsibility and Impact; Performance; News; Investment; Financial Markets; Stocks; Price
- August 2023 (Revised October 2024)
- Case
Accounting Outages at Plug Power? (A)
By: Jonas Heese, Joseph Pacelli and James Barnett
Set immediately after a December 2019 short-seller attack, the case explores Plug Power’s long challenging history. It then focuses on two key issues raised in the short-seller report related to lease accounting and stock warrants that Plug purportedly used to boost... View Details
- August 2023 (Revised October 2024)
- Supplement
Accounting Outages at Plug Power? (B)
By: Jonas Heese, Joseph Pacelli and James Barnett
The case is set in spring 2021, immediately after Plug Power made financial restatements dating back to 2018. The case describes the restatements, which revealed that Plug was reclassifying expense items to boost gross profits. View Details
- August 2023 (Revised January 2024)
- Supplement
Arla Foods: Data-Driven Decarbonization (B)
By: Michael Parzen, Michael W. Toffel, Susan Pinckney and Amram Migdal
The case describes Arla’s history, in particular its climate change mitigation efforts, and how it implemented a price incentive system to motivate individual farms to implement scope 1 greenhouse gas emissions mitigation measures and receive a higher milk price. The... View Details
Keywords: Dairy Industry; Earnings Management; Environmental Accounting; Animal-Based Agribusiness; Mergers and Acquisitions; Decisions; Voting; Climate Change; Environmental Regulation; Environmental Sustainability; Green Technology; Pollution; Moral Sensibility; Values and Beliefs; Financial Strategy; Price; Profit; Revenue; Food; Geopolitical Units; Cross-Cultural and Cross-Border Issues; Global Strategy; Cooperative Ownership; Performance Efficiency; Performance Evaluation; Problems and Challenges; Natural Environment; Science-Based Business; Business Strategy; Commercial Banking; Cooperation; Corporate Strategy; Motivation and Incentives; Food and Beverage Industry; Food and Beverage Industry; Europe; United Kingdom; European Union; Denmark; Sweden; Luxembourg; Belgium
- August 2023
- Technical Note
Two Ways of Pursuing a Calling
By: Leslie Perlow and Hannah Weisman
Work can be a means to a financial end, a stepping stone to higher-level jobs, or a meaningful end in itself: a calling. The technical note provides an overview of two different ways people can pursue a calling: with an internal focus or external focus. View Details
Keywords: Personal Development and Career; Job Search; Job Design and Levels; Happiness; Identity; Well-being; Motivation and Incentives; Human Needs; Satisfaction; Mission and Purpose; Motion Pictures and Video Industry; Motion Pictures and Video Industry; Motion Pictures and Video Industry; Motion Pictures and Video Industry; Motion Pictures and Video Industry
- August 2023
- Article
Can Security Design Foster Household Risk-Taking?
By: Laurent Calvet, Claire Célérier, Paolo Sodini and Boris Vallée
This paper shows that securities with a non-linear payoff design can foster household risk-taking. We demonstrate this effect empirically by exploiting the introduction of capital guarantee products in Sweden from 2002 to 2007. The fast and broad adoption of these... View Details
- July 2023 (Revised May 2024)
- Case
India Stack: Digital Public Infrastructure for All
By: Tarun Khanna, Anjali Raina and Rachna Chawla
Amitabh Kant, India Sherpa in the year of India's G20 Presidency, and Nandan Nilekani iconic tech entrepreneur wondered how to share India's model of digital public infrastructure to build social and economic inclusion. 'India Stack', the umbrella term for India's DPI... View Details
- July 2023 (Revised October 2024)
- Case
Revenue Recognition at Stride Funding: Making Sense of Revenues for a Fintech Startup
By: Paul M. Healy and Jung Koo Kang
The case explores the challenges of revenue recognition and financial reporting for Stride Funding (Stride), a fintech startup that has disrupted the student loan market. Stride leveraged proprietary machine learning and financial models to underwrite alternative... View Details