Publications

January 2025 (Revised April 2025)
Case

Duolingo: On a 'Streak'

By: Jeffrey F. Rayport, Nicole Tempest Keller and Nicole Luo

In December 2024, Severin Hacker, Co-Founder and Chief Technology Officer of Duolingo, reflected on the remarkable evolution of the language-learning app he helped launch in 2011. As the #1 most downloaded education app in the world, Duolingo had over 100 million... View Details

Keywords: Learning; AI and Machine Learning; Growth and Development Strategy; Motivation and Incentives; Diversification; Business Model; Market Entry and Exit; Technology Industry; Education Industry; United States

April 2012 (Revised June 2014)
Case

Capitalizing for the Future: HSBC in 2010

By: Anette Mikes and Dominique Hamel

Following the financial crisis of 2007/2008, HSBC CEO Michael Geoghegan saw a fundamental change in global opportunities and risks. With increasing regulation and fierce competition between banks, the Western hemisphere was going to be a tougher place to do business.... View Details

Keywords: Accounting; Competitive Strategy; Control Systems; Finance; Financial Crisis; Banks and Banking; Emerging Markets; Risk Management; Business Strategy; Banking Industry

Summer 2025
Article

Dynamic Competition for Customer Memberships

By: Cristian Chica, Julian Jimenez-Cardenas and Jorge Tamayo

A competitive two-period membership (subscription) market is analyzed. Two symmetric firms charge a “membership” fee that allows consumers to buy products or services at a given unit price for both periods. Firms can choose between long- or short-term memberships. When... View Details

Keywords: Competitive Price Discrimination; Membership; Dynamic Competition; Competition; Price; Consumer Behavior; Business Model

01 Mar 2004
News

Derek Ferguson

Ferguson is quick to discuss other aspects of his life, from fishing for porgy on Long Island Sound with his son and daughter to working on an economic justice ministry that brings jobs to the inner city through the View Details

Keywords: Julia Hanna; Performing Arts, Spectator Sports, and Related Industries; Arts, Entertainment

01 Sep 2003
News

Kumar Mahadeva

“What’s different about our business model is that we’ve leveraged the global talent pool, kept our costs low, and stayed on top of new technologies that can benefit our clients.” Mahadeva enjoys being an... View Details

Keywords: Deborah Blagg; Management, Scientific, and Technical Consulting Services; Professional Services

January 2021 (Revised October 2021)
Case

iOpenEye: Theater and #MeToo in Nigeria

By: Caroline Elkins, Tarun Khanna and Joyce J. Kim

In 2014, Ifeoma Fafunwa, an award-winning playwright and director, founded iOpenEye, a commercial production company dedicated to driving social change through performance art. iOpenEye’s flagship theatrical production was called “Hear Word! Naija Woman Talk True,”... View Details

Keywords: Theatre; Social Change; Entrepreneurship; Social Enterprise; Arts; Entertainment; Social Issues; Health Pandemics; Organizational Change and Adaptation; Business Model; Nigeria

Article

Gains from Foreign Direct Investment: Macro and Micro Approaches

By: Laura Alfaro

This paper discussed the importance of an “integrated approach” to the study of the effects of FDI on host countries. Macro-level work that examines countries at different stages of development and institutional capacity is needed to surface the role of local... View Details

Keywords: Spillovers; Complementarities; Mechanism; Foreign Direct Investment; Economic Growth

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15 May 2017
Sharpening Your Skills

The Promises and Limitations of Big Data

services firms are using digital information about their customers to offer them a whole new range of customized products under the category of fintech. Cities are using data from Google Street View to guide View Details

Keywords: by Sean Silverthorne; Financial Services; Utilities; Public Administration; Health

01 Sep 2023
News

End Game

efforts to combat climate change. “So many parts of this are absolutely applicable to any other kind of company.” “So many parts of this are absolutely applicable to any other kind of company.” Beyond securing the company after his tenure, Chouinard hopes their... View Details

Keywords: Jen McFarland Flint; Miscellaneous Store Retailers; Retail Trade

03 Jan 2017
First Look

January 3, 2017

January 2017 Journal of Financial Economics The Unintended Consequences of the Zero Lower Bound Policy By: Di Maggio, Marco, and Marcin Kacperczyk Abstract—We study the impact of the zero lower bound interest rate policy on the industrial... View Details

Keywords: Carmen Nobel

November 2020 (Revised March 2023)
Teaching Note

Unrest in Chile

By: Vincent Pons, John Masko, Rafael Di Tella and William Mullins

In 2020, Chileans would head to the ballot box to decide their country’s future. Many international observers credited Chile’s decades of neoliberal governance with turning the country into Latin America’s “Tiger,” a prosperous, diversified economy on its way to... View Details

Keywords: Developing Countries and Economies; Macroeconomics; Economy; Political Elections; Public Opinion; Social Issues; Equality and Inequality; System Shocks; Chile; Latin America