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- Faculty Publications (156)
- May 2021
- Supplement
Hello Alfred: Come Home Happy — Operating the Business Model Exercise, Instructor Version
By: Joseph B. Fuller and Christopher Payton
On a mission to "automate the on-demand economy," Harvard Business School classmates Marcela Sapone and Jessica Beck launched Hello Alfred in 2013 to provide subscribers with an "Alfred" to complete various chores for a monthly fee. In early 2016, the company has built...
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- May 2021
- Article
Preparing for a Pandemic: Accelerating Vaccine Availability
By: Amrita Ahuja, Susan Athey, Arthur Baker, Eric Budish, Juan Camilo Castillo, Rachel Glennerster, Scott Duke Kominers, Michael Kremer, Jean Lee, Canice Prendergast, Christopher M. Snyder, Alex Tabarrok, Brandon Joel Tan and Witold Wiecek
Vaccinating the world’s population quickly in a pandemic has enormous health and economic benefits. We analyze the problem faced by governments in determining the scale and structure of procurement for vaccines. We analyze alternative approaches to procurement, arguing...
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Keywords:
Vaccines;
Procurement;
Health Pandemics;
Health Care and Treatment;
Acquisition;
Cooperation
Ahuja, Amrita, Susan Athey, Arthur Baker, Eric Budish, Juan Camilo Castillo, Rachel Glennerster, Scott Duke Kominers, Michael Kremer, Jean Lee, Canice Prendergast, Christopher M. Snyder, Alex Tabarrok, Brandon Joel Tan, and Witold Wiecek. "Preparing for a Pandemic: Accelerating Vaccine Availability." AEA Papers and Proceedings 111 (May 2021): 331–335.
- April 2021 (Revised January 2022)
- Case
SA Taxi: A Vehicle for Empowerment? (A)
By: Nien-he Hsieh, Dilyana Karadzhova Botha and F. Christopher Eaglin
SA Taxi was a vertically integrated business that operated in South Africa’s distinctive taxi industry. Despite being plagued by violence, informal structures, unsafe road practices and lack of government support, the taxi industry had grown to become South Africa’s...
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Keywords:
Corporate Accountability;
Ownership;
Ownership Stake;
Business and Stakeholder Relations;
Equality and Inequality;
Race;
Situation or Environment;
Transportation Industry;
South Africa;
Africa
Hsieh, Nien-he, Dilyana Karadzhova Botha, and F. Christopher Eaglin. "SA Taxi: A Vehicle for Empowerment? (A)." Harvard Business School Case 321-138, April 2021. (Revised January 2022.)
- April 2021 (Revised January 2022)
- Supplement
SA Taxi: A Vehicle for Empowerment? (B)
By: Nien-he Hsieh, Dilyana Karadzhova Botha and F. Christopher Eaglin
SA Taxi was a vertically integrated business that operated in South Africa’s distinctive taxi industry. Despite being plagued by violence, informal structures, unsafe road practices and lack of government support, the taxi industry had grown to become South Africa’s...
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Keywords:
Corporate Accountability;
Ownership;
Ownership Stake;
Business and Stakeholder Relations;
Equality and Inequality;
Race;
Situation or Environment;
Transportation Industry;
South Africa;
Africa
Hsieh, Nien-he, Dilyana Karadzhova Botha, and F. Christopher Eaglin. "SA Taxi: A Vehicle for Empowerment? (B)." Harvard Business School Supplement 321-141, April 2021. (Revised January 2022.)
- Article
Dynamic Silos: Modularity in Intra-organizational Communication Networks during the Covid-19 Pandemic
By: Jonathan Larson, Tiona Zuzul, Emily Cox Pahnke, Neha Parikh Shah, Patrick Bourke, Nicholas Caurvina, Fereshteh Amini, Youngser Park, Joshua Vogelstein, Jeffrey Weston, Christopher White and Carey E. Priebe
Workplace communications around the world were drastically altered by Covid-19, work-from-home orders, and the rise of remote work. We analyze aggregated, anonymized metadata from over 360 billion emails within over 4000 organizations worldwide to examine changes in...
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Keywords:
COVID-19;
Remote Work;
Organizational Silos;
Health Pandemics;
Organizations;
Communication;
Networks
Larson, Jonathan, Tiona Zuzul, Emily Cox Pahnke, Neha Parikh Shah, Patrick Bourke, Nicholas Caurvina, Fereshteh Amini, Youngser Park, Joshua Vogelstein, Jeffrey Weston, Christopher White, and Carey E. Priebe. "Dynamic Silos: Modularity in Intra-organizational Communication Networks during the Covid-19 Pandemic." arXiv.org (April 1, 2021).
- Article
CDS Trading and Nonrelationship Lending Dynamics
By: Jung Koo Kang, Christopher Williams and Regina Wittenberg-Moerman
We investigate how credit default swaps (CDSs) affect lenders’ incentives to initiate new lending relationships. We predict that CDSs reduce adverse selection that nonrelationship lead arrangers face when competing for loans. Consistently, we find that a loan is...
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Keywords:
Credit Default Swaps;
CDS Market;
Non-relationship Lending;
Debt Contracts;
Adverse Selection;
Lending Monitoring;
Cross-selling
Kang, Jung Koo, Christopher Williams, and Regina Wittenberg-Moerman. "CDS Trading and Nonrelationship Lending Dynamics." Review of Accounting Studies 26, no. 1 (March 2021): 258–292.
- February 2021
- Article
Assessment of Electronic Health Record Use Between U.S. and Non-U.S. Health Systems
By: A Jay Holmgren, Lance Downing, David W. Bates, Tait D. Shanafelt, Arnold Milstein, Christopher Sharp, David Cutler, Robert S. Huckman and Kevin A. Schulman
Importance: Understanding how the electronic health record (EHR) system changes clinician work, productivity, and well-being is critical. Little is known regarding global variation in patterns of use.
Objective: To provide insights into which EHR... View Details
Objective: To provide insights into which EHR... View Details
Keywords:
Electronic Health Records;
Health Care and Treatment;
Online Technology;
Health Industry;
Information Technology Industry
Holmgren, A Jay, Lance Downing, David W. Bates, Tait D. Shanafelt, Arnold Milstein, Christopher Sharp, David Cutler, Robert S. Huckman, and Kevin A. Schulman. "Assessment of Electronic Health Record Use Between U.S. and Non-U.S. Health Systems." JAMA Internal Medicine 181, no. 2 (February 2021): 251–259.
- 2021
- Working Paper
Crisis Interventions in Corporate Insolvency
By: Samuel Antill and Christopher Clayton
We model the optimal resolution of insolvent firms in general equilibrium. Collateral constrained
banks lend to (i) solvent firms to finance investments and (ii) distressed firms to
avoid liquidation. Liquidations create negative fire-sale externalities. Liquidations...
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Keywords:
Insolvent Firms;
Government Intervention;
Liquidation;
Econometric Models;
Insolvency and Bankruptcy;
Governance;
Policy
Antill, Samuel, and Christopher Clayton. "Crisis Interventions in Corporate Insolvency." Working Paper, February 2021. (Accept with Revisions, Journal of Finance.)
- 2020
- Working Paper
Vertical Integration of Healthcare Providers Increases Self-Referrals and Can Reduce Downstream Competition: The Case of Hospital-Owned Skilled Nursing Facilities
By: David Cutler, Leemore S. Dafny, David Grabowski, Steven S. Lee and Christopher Ody
The landscape of the U.S. healthcare industry is changing dramatically as healthcare providers expand both within and across markets. While federal antitrust agencies have mounted several challenges to same-market combinations, they have not challenged any...
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Keywords:
Antitrust;
Health Care and Treatment;
Vertical Integration;
Organizational Structure;
Competition;
Health Industry;
United States
Cutler, David, Leemore S. Dafny, David Grabowski, Steven S. Lee, and Christopher Ody. "Vertical Integration of Healthcare Providers Increases Self-Referrals and Can Reduce Downstream Competition: The Case of Hospital-Owned Skilled Nursing Facilities." NBER Working Paper Series, No. 28305, December 2020.
- November 2020
- Article
Casting Conference Calls
By: Lauren Cohen, Dong Lou and Christopher J. Malloy
We explore a subtle but important mechanism through which firms can control information flow to the markets. We find that firms that “cast” their conference calls by disproportionately calling on bullish analysts tend to underperform in the future. Firms that call on...
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Cohen, Lauren, Dong Lou, and Christopher J. Malloy. "Casting Conference Calls." Management Science 66, no. 11 (November 2020): 5015–5039. (Winner of the First Prize, Crowell Memorial Award for Best Paper in Quantitative Investments, PanAgora Asset Management, 2014.)
- October 2020 (Revised August 2022)
- Case
Epic Games: Nineteen Eighty-Fortnight
By: Andy Wu, Miaomiao Zhang and Christopher Zhang
In the midst of intensifying public and political attention towards the market power of big technology, Epic Games in 2020 challenged the status quo that has existed for years in the Apple iOS and Google Android mobile application marketplaces and payment systems....
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Keywords:
Mobile Platforms;
Mobile App Industry;
Mobile Payment Systems;
Antitrust;
Games, Gaming, and Gambling;
Mobile and Wireless Technology;
Lawsuits and Litigation;
Entrepreneurship;
Competitive Strategy;
Digital Platforms;
United States
Wu, Andy, Miaomiao Zhang, and Christopher Zhang. "Epic Games: Nineteen Eighty-Fortnight." Harvard Business School Case 721-395, October 2020. (Revised August 2022.)
- October 2020
- Article
IQ from IP: Simplifying Search in Portfolio Choice
By: Huaizhi Chen, Lauren Cohen, Umit Gurun, Dong Lou and Christopher J. Malloy
Using a novel database that tracks web traffic on the SEC’s EDGAR servers between 2004 and 2015, we show that mutual fund managers gather information on a very particular subset of firms and insiders, and their surveillance is very persistent over time. This tracking...
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Keywords:
Tracked Trades;
Return Predictability;
Institutional Trading;
Insider Trading;
Institutional Investing;
Information;
Investment Portfolio;
Decisions;
Management
Chen, Huaizhi, Lauren Cohen, Umit Gurun, Dong Lou, and Christopher J. Malloy. "IQ from IP: Simplifying Search in Portfolio Choice." Journal of Financial Economics 138, no. 1 (October 2020): 118–137. (Winner of the First Prize, Crowell Memorial Award for Best Paper in Quantitative Investments, PanAgora Asset Management, 2019.)
- 2023
- Working Paper
When Should Public Programs Be Privately Administered? Theory and Evidence from the Paycheck Protection Program
By: Alexander Bartik, Zoë B. Cullen, Edward L. Glaeser, Michael Luca, Christopher Stanton and Adi Sunderam
What happens when public resources are allocated by private companies whose objectives may be
imperfectly aligned with policy goals? We study this question in the context of the Paycheck
Protection Program (PPP), which relied on private banks to disburse aid to small...
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Keywords:
Paycheck Protection Program;
Targeting;
Impact;
Entrepreneurship;
Health Pandemics;
Small Business;
Financing and Loans;
Outcome or Result;
United States
Bartik, Alexander, Zoë B. Cullen, Edward L. Glaeser, Michael Luca, Christopher Stanton, and Adi Sunderam. "When Should Public Programs Be Privately Administered? Theory and Evidence from the Paycheck Protection Program." Harvard Business School Working Paper, No. 21-021, August 2020. (Revised July 2023.)
- August 2020
- Case
Zoom Video Communications: Eric Yuan's Leadership During COVID-19
In the first half of 2020, worldwide lockdowns caused by the COVID-19 pandemic brought explosive growth to the Zoom Video Communications platform, as people replaced in-person work and social events with videoconferencing. Months into the pandemic, CEO Eric Yuan...
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Keywords:
Transformation;
Communication Technology;
Customer Value and Value Chain;
Values and Beliefs;
Technological Innovation;
Leadership;
Crisis Management;
Organizational Culture;
Working Conditions;
Strategy;
Information Technology;
Applications and Software;
Technology Adoption;
Health Pandemics;
Technology Industry;
United States;
California
Kominers, Scott Duke, Christopher Stanton, Andy Wu, and George Gonzalez. "Zoom Video Communications: Eric Yuan's Leadership During COVID-19." Harvard Business School Case 821-014, August 2020.
- 2020
- Working Paper
Best Ideas
By: Miguel Antón, Randolph B. Cohen and Christopher Polk
We find that the stocks in which active mutual fund or hedge fund managers display the most conviction towards ex-ante, their “Best ideas,” outperform the market, as well as the other stocks in those managers’ portfolios, by approximately 2.8 to 4.5 percent per year,...
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Keywords:
Mutual Funds;
Managerial Skill;
Market Efficiency;
Investment Funds;
Management;
Investment Portfolio;
Decision Making
Antón, Miguel, Randolph B. Cohen, and Christopher Polk. "Best Ideas." Harvard Business School Working Paper, No. 21-004, June 2020.
- August 14, 2020
- Comment
How Has COVID-19 Affected Health Insurance Offered by Small Businesses in the U.S.? Early Evidence from a Survey
By: Leemore S. Dafny, Yin Wei Soon, Zoë Cullen and Christopher T. Stanton
As the COVID-19 pandemic stretches toward its third quarter, loss of health insurance coverage has not figured prominently in the public debate. Data in this report demonstrate why that is, but also suggest that the apparent stability is fragile, with potentially...
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Keywords:
Health Pandemics;
Health Care and Treatment;
Insurance;
Small Business;
Surveys;
United States
Dafny, Leemore S., Yin Wei Soon, Zoë Cullen, and Christopher T. Stanton. "How Has COVID-19 Affected Health Insurance Offered by Small Businesses in the U.S.? Early Evidence from a Survey." NEJM Catalyst (August 14, 2020). (Commentary.)
- 2022
- Working Paper
Optimal Illiquidity
By: John Beshears, James J. Choi, Christopher Clayton, Christopher Harris, David Laibson and Brigitte C. Madrian
We calculate the socially optimal level of illiquidity in an economy populated by households with taste shocks and naive present bias. The government chooses mandatory contributions to accounts, each witha different pre-retirement withdrawal penalty. Collected...
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Keywords:
Illiquidity;
Commitment;
Flexibility;
Savings;
Social Security;
Retirement;
Government Legislation;
Taxation;
Saving
Beshears, John, James J. Choi, Christopher Clayton, Christopher Harris, David Laibson, and Brigitte C. Madrian. "Optimal Illiquidity." Working Paper, July 2022.
- 2021
- Conference Presentation
An Algorithmic Framework for Fairness Elicitation
By: Christopher Jung, Michael J. Kearns, Seth Neel, Aaron Leon Roth, Logan Stapleton and Zhiwei Steven Wu
We consider settings in which the right notion of fairness is not captured by simple mathematical definitions (such as equality of error rates across groups), but might be more complex and nuanced and thus require elicitation from individual or collective stakeholders....
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Jung, Christopher, Michael J. Kearns, Seth Neel, Aaron Leon Roth, Logan Stapleton, and Zhiwei Steven Wu. "An Algorithmic Framework for Fairness Elicitation." Paper presented at the 2nd Symposium on Foundations of Responsible Computing (FORC), 2021.
- June 2020
- Article
Lazy Prices
By: Lauren Cohen, Christopher J. Malloy and Quoc Nguyen
We explore the implications of a subtle "default" choice that firms make in their regular reporting practices, namely that firms typically repeat what they most recently reported. Using the complete history of regular quarterly and annual filings by U.S. corporations...
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Keywords:
Default Behavior;
Inertia;
Firms;
Disclosure;
Information;
Business or Company Management;
Behavior;
Annual Reports;
Corporate Disclosure;
Financial Reporting;
United States
Cohen, Lauren, Christopher J. Malloy, and Quoc Nguyen. "Lazy Prices." Journal of Finance 75, no. 3 (June 2020): 1371–1415. (Winner of the First Prize, Chicago Quantitative Alliance Academic Paper Competition, 2016. Winner of the Jack Treynor Prize for superior work in the field of investment management and financial markets, sponsored by the Q-Group,The Institute for Quantitative Research in Finance, 2016. Winner of the Hillcrest Behavioral Finance Prize, 2016.)
- 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...
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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.