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- All HBS Web (1,014)
- Faculty Publications (318)
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- October 2021 (Revised December 2021)
- Case
PhonePe: Democratizing Payments in India
By: Michael Chu and Rachna Tahilyani
The co-founders of PhonePe, India’s leading digital payment platform are considering pursuing various growth opportunities in a huge country just entering the digital age. In a highly competitive industry, the founders are keenly aware that making the right choices is... View Details
Keywords: Digital Platform; Digital Banking; Business Strategy; Growth and Development Strategy; Decision Choices and Conditions; Corporate Entrepreneurship; Digital Platforms; Financial Services Industry; Asia; India
Chu, Michael, and Rachna Tahilyani. "PhonePe: Democratizing Payments in India." Harvard Business School Case 322-053, October 2021. (Revised December 2021.)
- 2007
- Working Paper
Coupled Search Processes: Why Is it so Difficult to Find that Organizational Design Matters?
By: Nicolaj Siggelkow and Jan Rivkin
Organizational design affects performance via coupled search processes. At low frequency, managers search for appropriate organizational designs. At higher frequency, managers use designs to search for high-performing operational choices. The two searches are coupled:... View Details
Keywords: Competency and Skills; Operations; Organizational Design; Performance; Networks; Research; Cognition and Thinking; Strategy
Siggelkow, Nicolaj, and Jan Rivkin. "Coupled Search Processes: Why Is it so Difficult to Find that Organizational Design Matters?" Harvard Business School Working Paper, No. 07-106, June 2007.
- Research Summary
Working Hard and Investing for an Early Retirement
I examine consumption, leisure, and portfolio choices made over the life-cycle using a model allowing for semi-flexible leisure and an endogenously chosen retirement date. Under a Cobb-Douglas utility specification, I present closed-form expressions for optimal... View Details
- April 2023
- Article
The Preference Survey Module: A Validated Instrument for Measuring Risk, Time, and Social Preferences
By: Armin Falk, Anke Becker, Thomas Dohmen, David B. Huffman and Uwe Sunde
Incentivized choice experiments are a key approach to measuring preferences in economics but are also costly. Survey measures are a low-cost alternative but can suffer from additional forms of measurement error due to their hypothetical nature. This paper seeks to... View Details
Keywords: Survey Validation; Experiment; Preference Measurement; Surveys; Economics; Behavior; Measurement and Metrics
Falk, Armin, Anke Becker, Thomas Dohmen, David B. Huffman, and Uwe Sunde. "The Preference Survey Module: A Validated Instrument for Measuring Risk, Time, and Social Preferences." Management Science 69, no. 4 (April 2023): 1935–1950.
- 2010
- Working Paper
Mixed Source
By: Ramon Casadesus-Masanell and Gaston Llanes
We study competitive interaction between a profit-maximizing firm that sells software and complementary services and a free open source competitor. We examine the firm's choice of business model between the proprietary model (where all software modules are... View Details
Keywords: Business Model; Duopoly and Oligopoly; Monopoly; Open Source Distribution; Quality; Competition; Information Technology Industry
Casadesus-Masanell, Ramon, and Gaston Llanes. "Mixed Source." Harvard Business School Working Paper, No. 10-022, September 2009. (Revised October 2010.)
- February 2005
- Case
Nomura Holdings
By: Tarun Khanna, Masako Egawa and Atsuko Nakajima
Nomura Holdings, Japan's largest investment bank, faced with intensifying competition in the global financial markets, was trying to decide how global its operations should be despite its Japan-centered business. Was the question of how global Nomura should be related... View Details
Keywords: Global Range; Corporate Governance; Governing Rules, Regulations, and Reforms; Corporate Strategy; Financial Services Industry; Japan
Khanna, Tarun, Masako Egawa, and Atsuko Nakajima. "Nomura Holdings." Harvard Business School Case 705-427, February 2005.
- March – April 2008
- Article
Interorganizational Trust, Governance Choice, and Exchange Performance
By: Ranjay Gulati and Jackson Nickerson
This paper looks at when and how preexisting interorganizational trust influences the choice of governance and in turn the performance of exchange relationships. We theorize that preexisting interorganizational trust complements the choice of governance mode (make,... View Details
Keywords: Corporate Governance; Organizational Culture; Performance Improvement; Conflict and Resolution; Trust
Gulati, Ranjay, and Jackson Nickerson. "Interorganizational Trust, Governance Choice, and Exchange Performance." Organization Science 19, no. 2 (March–April 2008): 1–21.
- 2013
- Working Paper
Competing Ad Auctions
By: Itai Ashlagi, Benjamin Edelman and Hoan Soo Lee
We present a two-stage model of competing ad auctions. Search engines attract users via Cournot-style competition. Meanwhile, each advertiser must pay a participation cost to use each ad platform, and advertiser entry strategies are derived using symmetric Bayes-Nash... View Details
Keywords: Online Advertising; Auctions; Market Participation; Market Platforms; Mathematical Methods; Competition
Ashlagi, Itai, Benjamin Edelman, and Hoan Soo Lee. "Competing Ad Auctions." Harvard Business School Working Paper, No. 10-055, January 2010. (Revised May 2010, February 2011, September 2013.)
- Article
Representative Democracy and the Implementation of Majority-Preferred Alternatives
In this paper, we contrast direct and representative democracy. In a direct democracy, individuals have the opportunity to vote over the alternatives in every choice problem the population faces. In a representative democracy, the population commits to a candidate ex... View Details
Coffman, Katherine Baldiga. "Representative Democracy and the Implementation of Majority-Preferred Alternatives." Social Choice and Welfare 46, no. 3 (March 2016): 477–494.
- July 2008 (Revised September 2009)
- Case
Betfair vs. UK Bookmakers
By: Ramon Casadesus-Masanell and Neil Campbell
Betting exchanges provide an electronic platform that allows ordinary consumers to not only back teams to win, but also to lay odds for other punters to back. This business model allows punters to cut out the middleman of the bookmaker and leads to a much more... View Details
Keywords: Business Model; Decision Choices and Conditions; Two-Sided Platforms; Market Transactions; Competition; Entertainment and Recreation Industry
Casadesus-Masanell, Ramon, and Neil Campbell. "Betfair vs. UK Bookmakers." Harvard Business School Case 709-417, July 2008. (Revised September 2009.)
- February 2021 (Revised January 2022)
- Case
Muhammad Ali: Changing The World
By: Robert Simons and Max Saffer
This case describes the rise of Cassius Clay, who later called himself Muhammad Ali, from the poor streets of Louisville, Kentucky to international fame. The case describes how Ali won a gold medal in the Olympics, three heavyweight boxing titles, and became a role... View Details
Keywords: Sports; Mission and Purpose; Personal Characteristics; Religion; Work-Life Balance; Family and Family Relationships; Success; Power and Influence; Personal Development and Career; Sports Industry
Simons, Robert, and Max Saffer. "Muhammad Ali: Changing The World." Harvard Business School Case 121-053, February 2021. (Revised January 2022.)
- 2021
- Working Paper
The Value of Intermediation in the Stock Market
By: Marco Di Maggio, Mark Egan and Francesco Franzoni
We estimate a structural model of broker choice to quantitatively decompose the value that institutional investors attach to broker services. Studying over 300 million institutional equity trades, we find that investors are sensitive to both explicit and implicit... View Details
Keywords: Financial Intermediation; Institutional Investors; Research Analysts; Broker Networks; Equity Trading; Institutional Investing; Financial Services Industry
Di Maggio, Marco, Mark Egan, and Francesco Franzoni. "The Value of Intermediation in the Stock Market." Harvard Business School Working Paper, No. 20-016, August 2019. (Revised June 2021. Accepted at the Journal of Financial Economics.)
- October 2009 (Revised April 2010)
- Case
Societe Generale (A): 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
Keywords: Risk Management; Problems and Challenges; Complexity; Cost Management; Balance and Stability; Business Model; Design; Stocks; Crisis Management; Financial Markets; Consulting Industry; Europe
Brochet, Francois. "Societe Generale (A): The Jerome Kerviel Affair." Harvard Business School Case 110-029, October 2009. (Revised April 2010.)
- 2018
- Chapter
Behavioral Household Finance
By: John Beshears, James J. Choi, David Laibson and Brigitte C. Madrian
This chapter provides an overview of household finance. The first part summarizes key facts regarding household financial behavior, emphasizing empirical regularities that are inconsistent with the standard classical economic model and discussing extensions of the... View Details
Keywords: Personal Finance; Global Range; Household; Behavior; Strategy; Governing Rules, Regulations, and Reforms; Product Design; Welfare
Beshears, John, James J. Choi, David Laibson, and Brigitte C. Madrian. "Behavioral Household Finance." In Handbook of Behavioral Economics: Foundations and Applications 1, edited by B. Douglas Bernheim, Stefano DellaVigna, and David Laibson, 177–276. Amsterdam: Elsevier, 2018.
- 2012
- Working Paper
The Dark Side of the Vote: Biased Voters, Social Information, and Information Aggregation Through Majority Voting
We experimentally investigate information aggregation through majority voting when some voters are biased. In such situations, majority voting can have a "dark side", i.e. result in groups making choices inferior to those made by individuals acting alone. We develop a... View Details
Morton, Rebecca B., Marco Piovesan, and Jean-Robert Tyran. "The Dark Side of the Vote: Biased Voters, Social Information, and Information Aggregation Through Majority Voting." Harvard Business School Working Paper, No. 13-017, August 2012.
- September 2019
- Article
Optimizing Reserves in School Choice: A Dynamic Programming Approach
By: Franklyn Wang, Ravi Jagadeesan and Scott Duke Kominers
We introduce a new model of school choice with reserves in which a social planner is constrained by a limited supply of reserve seats and tries to find an optimal matching according to a social welfare function. We construct the optimal distribution of reserves via a... View Details
Wang, Franklyn, Ravi Jagadeesan, and Scott Duke Kominers. "Optimizing Reserves in School Choice: A Dynamic Programming Approach." Operations Research Letters 47, no. 5 (September 2019): 438–446.
- 2023
- Working Paper
Causal Interpretation of Structural IV Estimands
By: Isaiah Andrews, Nano Barahona, Matthew Gentzkow, Ashesh Rambachan and Jesse M. Shapiro
We study the causal interpretation of instrumental variables (IV) estimands of nonlinear, multivariate structural models with respect to rich forms of model misspecification. We focus on guaranteeing that the researcher's estimator is sharp zero consistent, meaning... View Details
Keywords: Mathematical Methods
Andrews, Isaiah, Nano Barahona, Matthew Gentzkow, Ashesh Rambachan, and Jesse M. Shapiro. "Causal Interpretation of Structural IV Estimands." NBER Working Paper Series, No. 31799, October 2023.
- January 2013 (Revised October 2013)
- Case
Chef Davide Oldani and Ristorante D'O
By: Gary Pisano, Alessandro Di Fiore, Elena Corsi and Elisa Farri
This case examines the unique business model of Ristorante D'O, a high end gourmand restaurant located near Milan, Italy. Founded by Chef Davide Oldani, D'O offers meals at approximately one-third the price of other Michelin starred restaurants. Oldani has made this... View Details
Keywords: Business Model; Expansion; Creativity; Competitive Strategy; Retail Industry; Food and Beverage Industry; Milan
Pisano, Gary, Alessandro Di Fiore, Elena Corsi, and Elisa Farri. "Chef Davide Oldani and Ristorante D'O." Harvard Business School Case 613-080, January 2013. (Revised October 2013.)
- Research Summary
Strength of Incentives
By: Jerry R. Green
When economists analyze the incentive properties of decision making systems they assume that all economic agents are capable of optimizing their decisions and that they respond without error to the incentives that the system creates. In this project, Jerry R. Green... View Details
- Article
The Value of Intermediation in the Stock Market
By: Marco Di Maggio, Mark Egan and Francesco Franzoni
We estimate a structural model of broker choice to quantitatively decompose the value that institutional investors attach to broker services. Studying over 300 million institutional equity trades, we find that investors are sensitive to both explicit and implicit... View Details
Keywords: Financial Intermediation; Institutional Investors; Research Analysts; Broker Networks; Equity Trading; Institutional Investing
Di Maggio, Marco, Mark Egan, and Francesco Franzoni. "The Value of Intermediation in the Stock Market." Journal of Financial Economics 145, no. 2A (August 2022): 208–233.