Publications
Publications
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- All HBS Web
(2,142)
- Faculty Publications (292)
- August 2019
- Case
Twiggle: E-commerce with Semantic Search
By: Shane Greenstein and Danielle Golan
Four years after being founded, in 2014, by former Google executives Amir Konigsberg (CEO) and Adi Avidor (CTO), Twiggle had developed a search enhancement that plugged into an online merchant’s existing framework. The company utilized advanced structuring and... View Details
- August 2019
- Article
When and How to Diversify—A Multicategory Utility Model for Personalized Content Recommendation
By: Yicheng Song, Nachiketa Sahoo and Elie Ofek
Sometimes we desire change, a break from the same or an opportunity to fulfill different aspects of our needs. Noting that consumers seek variety, several approaches have been developed to diversify items recommended by personalized recommender systems. However,... View Details
- June 2019
- Article
Social Risk, Fiscal Risk, and the Portfolio of Government Programs
We develop a model of government portfolio choice in which a benevolent government chooses the scale of risky projects in the presence of market failures and tax distortions. These two frictions generate motives to manage social risk and fiscal risk. Social risk... View Details
- February 2019 (Revised August 2019)
- Case
KangaTech
By: Karim R. Lakhani, Patrick J. Ferguson, Sarah Fleischer, Jin Hyun Paik and Steven Randazzo
On a warm January afternoon in 2019, Steve Saunders, Dave Scerri, Carl Dilena, and Nick Haslam (see Exhibit 1 for biographies), co-founders of KangaTech, wrapped up the latest round of discussions about the future direction of their sports-technology start-up. Focused... View Details
- December 2018
- Case
Bata versus Relaxo—Analyzing Performance
By: Suraj Srinivasan, Iris Leung and Quinn Pitcher
Set in 2016, “Bata India versus Relaxo—Analyzing Performance” compares the strategies and financial performance of two Indian footwear companies. Bata India had long been the market leader in footwear in India, but its leading market position was being challenged by... View Details
- Article
Populism and the Return of the 'Paranoid Style': Some Evidence and a Simple Model of Demand for Incompetence as Insurance against Elite Betrayal
By: Rafael Di Tella and Julio J. Rotemberg
We present a simple model of populism as the rejection of “disloyal” leaders. We show that adding the assumption that people are worse off when they experience low income as a result of leader betrayal (than when it is the result of bad luck) to a simple voter choice... View Details
- 2018
- Working Paper
OTC Intermediaries
By: Andrea L. Eisfeldt, Bernard Herskovic, Sriram Rajan and Emil Siriwardane
Over-the-counter (OTC) markets for financial assets are dominated by a relatively small number of core intermediaries and a large number of peripheral customers. In this paper, we develop a model of trade in a core-periphery network and estimate its key structural... View Details
- 2018
- Working Paper
Design Rules, Volume 2: How Technology Shapes Organizations: Chapter 6 The Value Structure of Technologies, Part 1: Mapping Functional Relationships
Organizations are formed in a free economy because a person or group perceives value in carrying out a technical recipe that is beyond the capacity of a single person. Technology specifies what must be done, what resources must be assembled, what actions taken, and... View Details
- September 26, 2018
- Article
Ownership and Power Structure: Together at Last
By: Laura Alfaro, Nicholas Bloom, Paola Conconi, Harald Fadinger, Patrick Legros, Andrew Newman, Raffaella Sadun and John Van Reenen
Economists have largely ignored the deep interdependency between integration and delegation. This column describes a new theory of integration and delegation choices aimed at shedding light on how these distinct elements of organizational design interact. Contrary to... View Details
- 2019
- Working Paper
Large-Scale Demand Estimation with Search Data
By: Tomomichi Amano, Andrew Rhodes and Stephan Seiler
In many online markets, traditional methods of demand estimation are difficult to implement because assortments are very large and individual products are sold infrequently. At the same time, data on consumer search (i.e., browsing) behavior are often available and are... View Details
- September 2018
- Article
Asset Price Dynamics in Partially Segmented Markets
By: Robin Greenwood, Samuel G. Hanson and Gordon Y. Liao
We develop a model in which capital moves quickly within an asset class but slowly between asset classes. While most investors specialize in a single asset class, a handful of generalists can gradually reallocate capital across markets. Upon the arrival... View Details
- 2018
- Working Paper
The State of Open Source Server Software
By: Shane Greenstein and Klaus Ackermann
The study assembles new data to construct a census of worldwide web server use across the globe. We document a large concentration of investment in the United States, and a wide dispersion across scores of countries. We find tens of billions of dollars of unmeasured... View Details
- August 2018
- Article
Extrapolation and Bubbles
By: Nicholas Barberis, Robin Greenwood, Lawrence Jin and Andrei Shleifer
We present an extrapolative model of bubbles. In the model, many investors form their demand for a risky asset by weighing two signals: an average of the asset’s past price changes and the asset’s degree of overvaluation. The two signals are in conflict, and investors... View Details
- February 2018
- Case
Infrastructure in Nigeria: Unlocking Pension Fund Investments
By: John Macomber and Pippa Tubman Armerding
The so-called “infrastructure finance gap” was a problem in Nigeria as in many parts of the world. Infrastructure projects like power plants and dams were very large capital investments that could generate long-term consistent cash flows, but their financing and... View Details
- 2018
- Working Paper
Zig-Zagging Your Way to Transformative Impact
By: V. Kasturi Rangan and Tricia Gregg
Achieving transformative impact has been much discussed by social entrepreneurs, funders, and consultants. These discussions have focused on issues of increasing impact and scale, but often with no clear distinction between the two terms. In order to provide clarity,... View Details
- January 2018 (Revised March 2019)
- Teaching Note
Jumia Nigeria: from Retail to Marketplace (A) and (B)
By: Ramon Casadesus-Masanell and Karen Elterman
Founded in 2012, Jumia Nigeria, a startup effort by Germany-based Rocket Internet, aimed to become an African Amazon. The company entered the nascent market and immediately enjoyed an uptick in consumer spending fueled by the strength of Nigeria’s oil-based economy. By... View Details
- January–February 2018
- Article
Some Customers Would Rather Leave Without Saying Goodbye
By: Eva Ascarza, Oded Netzer and Bruce G.S. Hardie
We investigate the increasingly common business setting in which companies face the possibility of both observed and unobserved customer attrition (i.e., “overt” and “silent” churn) in the same pool of customers. This is the case for many online-based services where... View Details
- December 2017 (Revised June 2021)
- Case
Tesla's Bid for SolarCity (A)
By: Charles C.Y. Wang and Raaj Zutshi
In October 2016, Tesla asked its shareholders to ratify their $2.4 billion bid for SolarCity. Tesla had announced a series of large projects in the preceding months including the unveiling of the Model 3, the new Solar Roof, and pushing forward the opening of the... View Details
- January 2018
- Supplement
Jumia Nigeria PowerPoint Supplement
Founded in 2012, Jumia Nigeria, a startup effort by Germany-based Rocket Internet, aimed to become an African Amazon. The company entered the nascent market and immediately enjoyed an uptick in consumer spending fueled by the strength of Nigeria’s oil-based economy. By... View Details
- 2020
- Working Paper
The Real Exchange Rate, Innovation and Productivity
By: Laura Alfaro, Alejandro Cuñat, Harald Fadinger and Yanping Liu
We evaluate manufacturing firms' responses to changes in the real exchange rate (RER) using detailed firm-level data for a large set of countries for the period 2001–2010. We uncover the following stylized facts about regional variation of manufacturing firms'... View Details