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- 2025
- Working Paper
Rethinking Volume
By: Philippe van der Beck, Lorenzo Bretscher and Zhiyu Julie Fu
Gross trading volumes in financial markets are large and far exceed return volatility. In contrast, “net volume”—trading from persistent portfolio reallocations—is substantially lower, as it excludes transitory round-trip trades. This observation reveals a fundamental... View Details
- 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
- July–August 2025
- Article
Passion Penalizes Women and Advantages (Unexceptional) Men in High-Potential Designations
By: Joyce He, Jon M. Jachimowicz and Celia Moore
High potential programs offer a swift path up the corporate ladder for those who secure a place on them. However, the evaluation of “potential” occurs under considerable uncertainty, creating fertile ground for gender bias. We document that men are more likely than... View Details
- 2025
- Working Paper
Sovereign Default and the Decline in Interest Rates
By: Max Miller, James D. Paron and Jessica Wachter
Sovereign debt yields have declined dramatically over the last half-century. Standard explanations, including aging populations and increases in asset demand from abroad, encounter difficulties when confronted with the full range of evidence. We propose an explanation... View Details
- June 2025
- Case
Zerodha
By: Das Narayandas and Kairavi Dey
Zerodha Broking Pvt. Ltd. (Zerodha) was among India's largest online broking platforms. Nithin and Nikhil Kamath started Zerodha to empower retail investors and remove the hurdles to investing in stocks. The company pioneered tech-first discount broking, charging... View Details
Keywords: Financial Services Industry
- 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
- June 2025
- Article
Integral Outside: The Financial Curb Market, the Electric Telegraph, and the Politics of Pricing in Second Empire France
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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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
- 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