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Publications

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      • July 2025
      • Article

      Digital Lending and Financial Well-Being: Through the Lens of Mobile Phone Data

      By: AJ Chen, Omri Even-Tov, Jung Koo Kang and Regina Wittenberg-Moerman
      To mitigate information asymmetry about borrowers in developing economies, digital lenders use machine-learning algorithms and nontraditional data from borrowers’ mobile devices. Consequently, digital lenders have managed to expand access to credit for millions of... View Details
      Keywords: Informal Economy; Digital Banking; Mobile Phones; Developing Countries and Economies; Mobile and Wireless Technology; AI and Machine Learning; Analytics and Data Science; Credit; Borrowing and Debt; Well-being; Banking Industry; Kenya
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      Chen, AJ, Omri Even-Tov, Jung Koo Kang, and Regina Wittenberg-Moerman. "Digital Lending and Financial Well-Being: Through the Lens of Mobile Phone Data." Accounting Review 100, no. 4 (July 2025): 135–159.
      • 2025
      • Working Paper

      Street Earnings: Implications for Asset Pricing

      By: Sebastian Hillenbrand and Odhrain McCarthy
      To address the excess volatility puzzle – the excessive movements in stock prices – researchers often study movements in valuation ratios. However, we demonstrate that movements in valuation ratios based on fundamental measures with high transitory volatility, such as... View Details
      Keywords: Investment Return; Asset Pricing; Valuation; Measurement and Metrics; Stocks
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      Hillenbrand, Sebastian, and Odhrain McCarthy. "Street Earnings: Implications for Asset Pricing." Working Paper, June 2025.
      • June 2025
      • Article

      Integral Outside: The Financial Curb Market, the Electric Telegraph, and the Politics of Pricing in Second Empire France

      By: Charlotte Robertson
      Financial markets in nineteenth-century France were far more complex than an analysis of the official Bourse or its state-authorized brokers would suggest. Most financial transactions occurred on an illegal yet tacitly tolerated curb market called the coulisse, which... View Details
      Keywords: Financial Markets; History; Communication Technology; Knowledge Dissemination; France
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      Robertson, Charlotte. "Integral Outside: The Financial Curb Market, the Electric Telegraph, and the Politics of Pricing in Second Empire France." Journal of Modern History 97, no. 2 (June 2025): 307–347.
      • June 2025
      • Article

      Social Security and Trends in Wealth Inequality

      By: Sylvain Catherine, Max Miller and Natasha Sarin
      Recent influential work finds large increases in inequality in the U.S. based on measures of wealth concentration that notably exclude the value of social insurance programs. This paper shows that top wealth shares have not changed much over the last three decades when... View Details
      Keywords: Wealth; Equality and Inequality; Taxation; Insurance; Welfare
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      Catherine, Sylvain, Max Miller, and Natasha Sarin. "Social Security and Trends in Wealth Inequality." Journal of Finance 80, no. 3 (June 2025): 1497–1531.
      • May 2025
      • Case

      IQanat: Empowering Rural Youth in Kazakhstan

      By: Boris Groysberg and Maxim Pike Harrell
      In June 2025, IQanat CEO Aliya Salikova considered scaling opportunities for the foundation, which provided educational opportunities for children from rural regions of Kazakhstan. Established by Kazakhstani businessman and philanthropist Aidyn Rakhimbayev, IQanat... View Details
      Keywords: Mission and Purpose; Organizational Change and Adaptation; Leadership; Social Enterprise; Social Entrepreneurship; Growth and Development Strategy; Growth Management; Rural Scope; Philanthropy and Charitable Giving; Equality and Inequality; Education Industry; Central Asia; Kazakhstan
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      Groysberg, Boris, and Maxim Pike Harrell. "IQanat: Empowering Rural Youth in Kazakhstan." Harvard Business School Case 425-077, May 2025.
      • May–June 2025
      • Article

      Branch-and-Price for Prescriptive Contagion Analytics

      By: Alexandre Jacquillat, Michael Lingzhi Li, Martin Ramé and Kai Wang
      Contagion models are ubiquitous in epidemiology, social sciences, engineering, and management. This paper formulates a prescriptive contagion analytics model where a decision maker allocates shared resources across multiple segments of a population, each governed by... View Details
      Keywords: COVID-19; Mathematical Methods
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      Jacquillat, Alexandre, Michael Lingzhi Li, Martin Ramé, and Kai Wang. "Branch-and-Price for Prescriptive Contagion Analytics." Operations Research 73, no. 3 (May–June 2025): 1558–1580.
      • 2025
      • Working Paper

      Corporate Actions as Moral Issues

      By: Zwetelina Iliewa, Elisabeth Kempf and Oliver Spalt
      We examine nonpecuniary preferences across a broad set of corporate actions using a representative sample of the U.S. population. Our core findings, based on large-scale online surveys, are that (i) self-reported nonpecuniary concerns are large both for stock market... View Details
      Keywords: Public Opinion; Corporate Social Responsibility and Impact; Moral Sensibility
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      Iliewa, Zwetelina, Elisabeth Kempf, and Oliver Spalt. "Corporate Actions as Moral Issues." NBER Working Paper Series, No. 33749, May 2025.
      • 2024
      • Case

      EPCorp: Convincing the C-Suite

      By: Jacob M. Cook
      In EPCorp: Convincing the C-Suite, Shivani Bahl is attempting to sell EPCorp's CEO, Debbie Sullivan, on her ideas for not only a new website upgrade but also a more expansive vision on how data and Generative AI can be used to grow the company. Debbie is understandably... View Details
      Keywords: AI and Machine Learning; E-commerce; Growth and Development Strategy
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      Cook, Jacob M. "EPCorp: Convincing the C-Suite." Harvard Business Publishing Case, 2024. (Quick Case.)
      • May 2025
      • Article

      Imagining the Future: Memory, Simulation and Beliefs

      By: Pedro Bordalo, Giovanni Burro, Katherine B. Coffman, Nicola Gennaioli and Andrei Shleifer
      How do people form beliefs about novel risks, with which they have little or no experience? Motivated by survey data on beliefs about Covid we collected in 2020, we build a model based on the psychology of selective memory. When a person thinks about an event,... View Details
      Keywords: Expectations; Memory; COVID-19 Pandemic; Risk and Uncertainty; Cognition and Thinking
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      Bordalo, Pedro, Giovanni Burro, Katherine B. Coffman, Nicola Gennaioli, and Andrei Shleifer. "Imagining the Future: Memory, Simulation and Beliefs." Review of Economic Studies 92, no. 3 (May 2025): 1532–1563.
      • May 2025
      • Case

      Windsurf and the AI Code Assistant Market

      By: Suraj Srinivasan, Sudhanshu Nath Mishra and Radhika Kak
      In April 2025, the founding team of Windsurf, an AI start-up specializing in code generation gathered in Mountain View, California, to assess its remarkable year of growth. The company had scaled from a niche GitHub Copilot alternative to a breakout player with over... View Details
      Keywords: AI and Machine Learning; Venture Capital; Innovation Leadership; Technological Innovation; Technology Industry; United States
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      Srinivasan, Suraj, Sudhanshu Nath Mishra, and Radhika Kak. "Windsurf and the AI Code Assistant Market." Harvard Business School Case 125-111, May 2025.
      • April 2025
      • Case

      Thrivent: From Insurance Agents to Financial Advisors

      By: Hubert Joly, Leonard A. Schlesinger and Tom Quinn
      Thrivent, a midwestern financial services company with a centuries-long history rooted in Lutheranism, had reached $10 billion in revenue mostly by selling life insurance. In the 2020s, however, CEO Terry Rasmussen began a transformation process centered around the... View Details
      Keywords: Change Management; Transformation; Talent and Talent Management; Customer Focus and Relationships; Customer Value and Value Chain; Forecasting and Prediction; Employee Relationship Management; Retention; Selection and Staffing; Job Design and Levels; Human Capital; Leading Change; Mission and Purpose; Organizational Change and Adaptation; Organizational Culture; Insurance Industry; Financial Services Industry; United States; Minneapolis
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      Joly, Hubert, Leonard A. Schlesinger, and Tom Quinn. "Thrivent: From Insurance Agents to Financial Advisors." Harvard Business School Case 325-047, April 2025.
      • April 2025
      • Teaching Note

      Allbirds: Decarbonizing Fashion (A) and (B)

      By: Michael W. Toffel, Ken Pucker and Stacy Straaberg
      Teaching Note for HBS Case Nos. 622-024, 625-004, 625-005, and 625-702. The Allbirds: Decarbonizing Fashion (A) case introduces Allbirds as a footwear startup not only focused on simple design, comfort, and sustainable natural materials but on decarbonizing the wider... View Details
      Keywords: Decarbonization; Climate Impact; Environmental Strategy; Innovation; Product Design; Supply Chain Management; Innovation Strategy; Innovation and Management; Product Development; Climate Change; Environmental Management; Environmental Sustainability; Business Startups; Initial Public Offering; Knowledge Sharing; Competitive Advantage; Apparel and Accessories Industry; Fashion Industry; United States; California
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      Toffel, Michael W., Ken Pucker, and Stacy Straaberg. "Allbirds: Decarbonizing Fashion (A) and (B)." Harvard Business School Teaching Note 625-006, April 2025.
      • April 2025
      • Supplement

      Allbirds: Decarbonizing Fashion PowerPoint Supplement

      By: Michael W. Toffel, Ken Pucker and Stacy Straaberg
      The Allbirds: Decarbonizing Fashion (A) case introduces Allbirds as a footwear startup not only focused on simple design, comfort, and sustainable natural materials but on decarbonizing the wider fashion industry. Background material highlights the growing... View Details
      Keywords: Decarbonization; Climate Impact; Environmental Strategy; Innovation; Product Design; Supply Chain Management; Innovation Strategy; Innovation and Management; Product Development; Climate Change; Environmental Management; Environmental Sustainability; Apparel and Accessories Industry; Fashion Industry; United States; California
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      Toffel, Michael W., Ken Pucker, and Stacy Straaberg. "Allbirds: Decarbonizing Fashion PowerPoint Supplement." Harvard Business School PowerPoint Supplement 625-005, April 2025.
      • 2025
      • Working Paper

      Balancing Engagement and Polarization: Multi-Objective Alignment of News Content Using LLMs

      By: Mengjie Cheng, Elie Ofek and Hema Yoganarasimhan
      We study how media firms can use LLMs to generate news content that aligns with multiple objectives—making content more engaging while maintaining a preferred level of polarization/slant consistent with the firm’s editorial policy. Using news articles from The New York... View Details
      Keywords: Large Language Models; Content Creation; Media; Polarization; Generative Ai; Direct Preference Optimization; AI and Machine Learning; News; Perspective; Digital Marketing; Policy; Media and Broadcasting Industry
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      Cheng, Mengjie, Elie Ofek, and Hema Yoganarasimhan. "Balancing Engagement and Polarization: Multi-Objective Alignment of News Content Using LLMs." Harvard Business School Working Paper, No. 25-051, April 2025.
      • March 27, 2025
      • Article

      How One Company Used AI to Broaden Its Customer Base

      By: Sunil Gupta and Frank V. Cespedes
      The software company SAP successfully leveraged AI tools to begin selling to the small and medium enterprises (SMEs) market, which had previously been uneconomical for its in-person sales approach. By mapping the customer journey and deploying over 40 AI tools, SAP... View Details
      Keywords: AI and Machine Learning; Sales; Business Strategy; Market Entry and Exit
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      Gupta, Sunil, and Frank V. Cespedes. "How One Company Used AI to Broaden Its Customer Base." Harvard Business Review (website) (March 27, 2025).
      • 2025
      • Working Paper

      Private Equity and Workers: Modeling and Measuring Monopsony, Implicit Contracts, and Efficient Reallocation

      By: Kyle Herkenhoff, Josh Lerner, Gordon M. Phillips, Francisca Rebelo and Benjamin Sampson
      We measure the real effects of private equity buyouts on worker outcomes by building a new database that links transactions to matched employer-employee data in the United States. To guide our empirical analysis, we derive testable implications from three theories in... View Details
      Keywords: Monopsony; Market Power; Productivity; Private Equity; Employment; Wages; Employees
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      Herkenhoff, Kyle, Josh Lerner, Gordon M. Phillips, Francisca Rebelo, and Benjamin Sampson. "Private Equity and Workers: Modeling and Measuring Monopsony, Implicit Contracts, and Efficient Reallocation." Harvard Business School Working Paper, No. 25-046, March 2025. (Revised June 2025.)
      • March 2025 (Revised April 2025)
      • Case

      Dominion Voting Systems v. Fox News

      By: Vincent Pons, Jesse M. Shapiro, Bharat Anand and Susan Pinckney
      The case examines the Dominion Voting Systems and Fox News defamation settlement based upon statements made on air in the aftermath of the 2020 presidential election. View Details
      Keywords: (General) Management; Business Earnings; Financial Statements; Change Management; Disruption; Volatility; Transition; Crime and Corruption; Cost vs Benefits; Decision Making; Decision Choices and Conditions; Decisions; Demographics; Ethics; Values and Beliefs; Corporate Finance; Cost; Governance; Governance Compliance; Governance Controls; Policy; Political Elections; Business History; Information; Law; Legal Liability; Laws and Statutes; Management; Marketing; Advertising; Media; Performance; Problems and Challenges; Society; Public Opinion; Social Issues; Media and Broadcasting Industry; United States
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      Pons, Vincent, Jesse M. Shapiro, Bharat Anand, and Susan Pinckney. "Dominion Voting Systems v. Fox News." Harvard Business School Case 725-029, March 2025. (Revised April 2025.)
      • 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
      Keywords: Cognition and Thinking; Perception; Decision Choices and Conditions
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      Bordalo, Pedro, Nicola Gennaioli, Giacomo Lanzani, and Andrei Shleifer. "A Cognitive Theory of Reasoning and Choice." NBER Working Paper Series, No. 33466, February 2025.
      • January 2025
      • Teaching Plan

      Knowledge Transfer: Toyota, NUMMI, and GM

      By: Willy Shih
      Teaching Plan for HBS Case No. 625-003. New United Motors Manufacturing, Inc. (NUMMI) was a joint venture between Toyota and General Motors. It was an opportunity for GM to learn about the Toyota Production System, which was quite different from the mass production... View Details
      Keywords: Culture Change; Organizational Culture; Organizational Change and Adaptation; Factories, Labs, and Plants; Joint Ventures; Transformation; Selection and Staffing; Knowledge Acquisition; Knowledge Sharing; Labor Unions; Management Systems; Performance Improvement; Production; Labor and Management Relations; Auto Industry; Japan; United States
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      Shih, Willy. "Knowledge Transfer: Toyota, NUMMI, and GM." Harvard Business School Teaching Plan 625-071, January 2025.
      • 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)
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      Srinivasan, Suraj, and Minoshka Narayan. "Hebbia: Redefining Productivity for Knowledge Workers Using AI." Harvard Business School Case 125-075, January 2025.
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