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- All HBS Web (1,039)
- Faculty Publications (330)
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- Article
Recovering Investor Expectations from Demand for Index Funds
By: Mark Egan, Alexander J. MacKay and Hanbin Yang
We use a revealed-preference approach to estimate investor expectations of stock market returns. Using data on demand for index funds that follow the S&P 500, we develop and estimate a model of investor choice to flexibly recover the time-varying distribution of... View Details
Keywords: Stock Market Expectations; Demand Estimation; Exchange-traded Funds (ETFs); Demand and Consumers; Investment
Egan, Mark, Alexander J. MacKay, and Hanbin Yang. "Recovering Investor Expectations from Demand for Index Funds." Review of Economic Studies 89, no. 5 (October 2022): 2559–2599.
- 2021
- Working Paper
Recovering Investor Expectations from Demand for Index Funds
By: Mark Egan, Alexander J. MacKay and Hanbin Yang
We use a revealed-preference approach to estimate investor expectations of stock market returns. Using data on demand for index funds that follow the S&P 500, we develop and estimate a model of investor choice to flexibly recover the time-varying distribution of... View Details
Keywords: Stock Market Expectations; Demand Estimation; Exchange-traded Funds (ETFs); Demand and Consumers; Investment; United States
Egan, Mark, Alexander J. MacKay, and Hanbin Yang. "Recovering Investor Expectations from Demand for Index Funds." NBER Working Paper Series, No. 26608, January 2020. (Accepted at the Review of Economic Studies. Harvard Business School Working Paper, No. 20-122, May 2020. Direct download. Revised July 2021.)
- October 2009 (Revised April 2010)
- Supplement
Societe Generale (B): The Jerome Kerviel Affair
By: Francois Brochet
This case illustrates the tension/balance that firms with complex and risky business models must consider in designing their internal controls. It describes the environment in which a derivatives trader engaged in massive directional positions on major European stocks... View Details
Brochet, Francois. "Societe Generale (B): The Jerome Kerviel Affair." Harvard Business School Supplement 110-030, October 2009. (Revised April 2010.)
- October 1, 2021
- Article
An Evaluation of Cross-efficiency Methods: With an Application to Warehouse Performance.
By: B.M. Balk, M.R. De Koster, Christian Kaps and J.L. Zofio
Cross-efficiency measurement is an extension of Data Envelopment Analysis that allows for tie-breaking ranking of the Decision Making Units (DMUs) using all the peer evaluations. In this article we examine the theory of cross-efficiency measurement by comparing a... View Details
Keywords: Efficiency Analysis; Performance Benchmarking; Warehousing; Analytics and Data Science; Performance Evaluation; Measurement and Metrics; Mathematical Methods
Balk, B.M., M.R. De Koster, Christian Kaps, and J.L. Zofio. "An Evaluation of Cross-efficiency Methods: With an Application to Warehouse Performance." Art. 126261. Applied Mathematics and Computation 406 (October 1, 2021).
- 2018
- Working Paper
Opportunistic Returns and Dynamic Pricing: Empirical Evidence from Online Retailing in Emerging Markets
By: Chaithanya Bandi, Antonio Moreno, Donald Ngwe and Zhiji Xu
We investigate how dynamic pricing can lead to higher operational costs through more product returns in the online retail industry. Dynamic pricing has been widely applied by many online retailers. Research has shown that, in response to dynamic pricing, some customers... View Details
- 2018
- Working Paper
Opportunistic Returns and Dynamic Pricing: Empirical Evidence from Online Retailing in Emerging Markets
By: Chaithanya Bandi, Antonio Moreno, Donald Ngwe and Zhiji Xu
We investigate how dynamic pricing can lead to more product returns in the online retail industry. Using detailed sales data of more than two million transactions from the Indian online retail market, where price promotions are very common, we document two types of... View Details
Keywords: Cash On Delivery; Dynamic Pricing; Online Retail; Payment Methods; Strategic Customer Behavior; Opportunistic Returns; Price; Policy; Consumer Behavior; Emerging Markets; Retail Industry
Bandi, Chaithanya, Antonio Moreno, Donald Ngwe, and Zhiji Xu. "Opportunistic Returns and Dynamic Pricing: Empirical Evidence from Online Retailing in Emerging Markets." Harvard Business School Working Paper, No. 19-030, September 2018.
- winter 2003
- Article
Massively Categorical Variables: Revealing the Information in Zip Codes
We introduce the idea of a massively categorical variable, a variable such as zip code that takes on too many values to be treated in the standard manner, and show how to use it directly as explanatory variables in an econometric model. In an application of this... View Details
Steenburgh, Thomas J., Andrew Ainslie, and Peder Hans Engebretson. "Massively Categorical Variables: Revealing the Information in Zip Codes." Marketing Science 22, no. 1 (winter 2003): 40–57.
- December 2011
- Article
CEO and Board Chair Roles: To Split or Not to Split?
By: Aiyesha Dey, Ellen Engel and Xiaohui Liu
We examine the performance and compensation implications of firms' decisions to combine the roles of CEO and board chairman (duality). We document that firms that split the CEO and chairman positions due to investor pressure have significantly lower announcement... View Details
Keywords: CEO Duality; Board Chairman; Firm Performance; Pay-performance Sensitivity; Corporate Governance; Governing and Advisory Boards; Leadership; Performance Efficiency
Dey, Aiyesha, Ellen Engel, and Xiaohui Liu. "CEO and Board Chair Roles: To Split or Not to Split?" Journal of Corporate Finance 17, no. 5 (December 2011): 1595–1618.
- 11 Jan 2010
- Research & Ideas
Mixing Open Source and Proprietary Software Strategies
Adopting a new business model can be a strategic, game-changing play in any industry. But knowing when and how to try something new can be tricky, particularly in the constantly evolving software industry. The open source (OS) movement is... View Details
- February 2004
- Case
Note on Human Behavior: Reason and Emotion
By: Nitin Nohria and Bridget Gurtler
Human beings are driven by reasons and emotions. On the one hand, as rational choice theorists assert, human beings are resourceful and evaluative as they strive to maximize their own interests. An individual's interests can converge or diverge from the interests of... View Details
Keywords: Behavior; Cognition and Thinking; Emotions; Interests; Organizations; Organizational Design; Governing Rules, Regulations, and Reforms
Nohria, Nitin, and Bridget Gurtler. "Note on Human Behavior: Reason and Emotion." Harvard Business School Case 404-104, February 2004.
- March 2010 (Revised May 2012)
- Case
Myelin Repair Foundation: Accelerating Drug Discovery Through Collaboration
By: Karim R. Lakhani and Paul R. Carlile
This case presents the Myelin Repair Foundation's accelerated research collaboration model for drug discovery. It highlights the challenges of building a multi-disciplinary and multi-institutional research collaboration that is attempting to create a treatment for... View Details
Keywords: Research and Development; Intellectual Property; Risk and Uncertainty; Strategic Planning; Collaborative Innovation and Invention; Health Disorders; Pharmaceutical Industry; Biotechnology Industry; Health Industry
Lakhani, Karim R., and Paul R. Carlile. "Myelin Repair Foundation: Accelerating Drug Discovery Through Collaboration." Harvard Business School Case 610-074, March 2010. (Revised May 2012.)
- January–February 2023
- Article
Data-Driven COVID-19 Vaccine Development for Janssen
By: Dimitris Bertsimas, Michael Lingzhi Li, Xinggang Liu, Jennings Xu and Najat Khan
The COVID-19 pandemic has spurred extensive vaccine research worldwide. One crucial part of vaccine development is the phase III clinical trial that assesses the vaccine for safety and efficacy in the prevention of COVID-19. In this work, we enumerate the first... View Details
Keywords: COVID-19; Health Testing and Trials; Forecasting and Prediction; AI and Machine Learning; Research; Pharmaceutical Industry
Bertsimas, Dimitris, Michael Lingzhi Li, Xinggang Liu, Jennings Xu, and Najat Khan. "Data-Driven COVID-19 Vaccine Development for Janssen." INFORMS Journal on Applied Analytics 53, no. 1 (January–February 2023): 70–84.
- March 2020
- Case
Forbidden City: Launching a Craft Beer in China
By: Christopher A. Bartlett and Carole Carlson
This case describes a difficult choice faced by Victor Wang, Managing Director of Singapore-based Eurasian Brewing Company (EBC), concerning the competing product launch plans of Le Jie, Vice President of EBC's China and East Asian operations, and Vivian Chin, EBC's... View Details
Keywords: Subsidiary Management; Craft Brewing; Strategy; Decision Making; Organizational Structure; Business Model; Growth and Development Strategy; Entrepreneurship; Management Style; Food and Beverage Industry; China; East Asia
Bartlett, Christopher A., and Carole Carlson. "Forbidden City: Launching a Craft Beer in China." Harvard Business School Brief Case 920-559, March 2020.
- May 2024 (Revised May 2024)
- Case
Market by Met Council: Revolutionizing Food Pantries in the Digital Age
By: Elisabeth Paulson and Michael W. Toffel
In fall 2023, the Food Program of Met Council—America’s largest Jewish charity dedicated to fighting poverty—completed the rollout of the newest version of its digital pantry platform to twelve food pantries in the Met Council food pantry network. The digital... View Details
Keywords: Customer Focus and Relationships; Digital Transformation; Nonprofit Organizations; Service Operations; Human Needs
Paulson, Elisabeth, and Michael W. Toffel. "Market by Met Council: Revolutionizing Food Pantries in the Digital Age." Harvard Business School Case 624-060, May 2024. (Revised May 2024.)
- 15 May 2007
- First Look
First Look: May 15, 2007
economic models predict that they do not systematically differ. With online grocery data, we show that people are decreasingly impatient the further in the future their choices will take effect. In general,... View Details
Keywords: Martha Lagace
- January 2022
- Teaching Plan
Just Arrived: Integrating Refugees in Sweden
By: Brian Trelstad and Emilie Billaud
Teaching Plan for HBS Case No. 321-040. Just Arrived is an online platform that matches newly-arrived immigrants in Sweden with employment opportunities. As one of several for-profit and non-profit start-ups in Europe that is looking to address the refugee crisis, the... View Details
- Research Summary
Overview
Phil's work aims to identify the drivers of performance for healthcare organizations and providers, and the mechanisms by which this performance can change over time. In complex healthcare settings, the optimal choice of treatment can be highly ambiguous. As a... View Details
- June 2005 (Revised August 2013)
- Case
Amazon.com's European Distribution Strategy
By: Janice Hammond and Claire Chiron
Describes how Amazon's distribution system evolved from the company's inception. In 2003, Amazon Europe must decide how to reconfigure its distribution network in light of expected growth, products proliferation, and geographical expansion in Europe. Examines how... View Details
Keywords: Business Model; Decision Choices and Conditions; Growth and Development; Business or Company Management; Growth and Development Strategy; Supply and Industry; Distribution; Supply Chain; Risk and Uncertainty; Expansion; Web Services Industry
Hammond, Janice, and Claire Chiron. "Amazon.com's European Distribution Strategy." Harvard Business School Case 605-002, June 2005. (Revised August 2013.)
- 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.
- March 2024
- Case
Katharine Graham: Changing the World
By: Robert Simons and Shirley Sun
This case traces the life of Katharine Graham from housewife to publisher of the Washington Post. Born into a family of wealth, Graham described herself as a “doormat wife” after she married Phil Graham and stayed at home to raise their children. His unexpected death... View Details
Keywords: Mission and Purpose; Values and Beliefs; Power and Influence; Personal Characteristics; Leadership Style; Success; Work-Life Balance; News; Newspapers; Media; Gender; Publishing Industry
Simons, Robert, and Shirley Sun. "Katharine Graham: Changing the World." Harvard Business School Case 124-035, March 2024.