Publications

April 2012 (Revised March 2014)
Case

Social Strategy at Nike

By: Mikolaj Jan Piskorski and Ryan Johnson

Nike, which first started experimenting with social media and networking in 2004, has been consistently reducing its spending on traditional advertising. Yet, Nike has not pulled back on its overall marketing budget, instead opting to focus on "nontraditional"... View Details

Keywords: Strategy; Advertising Campaigns; Social and Collaborative Networks; Online Advertising; Apparel and Accessories Industry; Sports Industry

August 2006 (Revised March 2008)
Case

iPod vs. Cell Phone: A Mobile Music Revolution?

By: David B. Yoffie, Travis D. Merrill and Michael Slind

In 2006, a nascent market for music-enabled mobile phones was emerging to challenge Apple Computer's dominant position in the digital music industry. Through its iPod line of portable digital music devices and its iTunes Music Store, Apple controlled more than half of... View Details

Keywords: Music Entertainment; Emerging Markets; Brands and Branding; Sales; Opportunities; Price; Business Model; Mobile and Wireless Technology; Digital Platforms; Service Delivery; Communications Industry; Music Industry

Sara Torti is a senior product and operating executive who has focused extensively on creating and scaling technology-based businesses that require a combination of detailed execution, business insight and technical acumen. She has grown products... View Details

December 1999 (Revised September 2004)
Case

Hermes Systems

By: Michael L. Tushman and Daniel Radov

Covers the history of Hermes, a large telecommunications and network equipment company, as it grows from a single business firm to a diversified firm from 1980-95. Examines the use of entrepreneurial subsidiaries for product development and fast growth. Other issues... View Details

Keywords: History; Leadership; Business Subsidiaries; Diversification; Growth Management; Business Growth and Maturation; Business Divisions; Problems and Challenges; Product Development; Technology Industry

August 1998 (Revised June 2000)
Case

FairMarket, Inc.: Where Buyers and Sellers Connect

By: Lynda M. Applegate, Jack Wieland and Chad M. M Raube

On February 20, 1997, FairMarket, an Internet-based business-to-business auction site, was launched. CEO, founder Scott Randall, drew on his experience building Internet businesses at NECX Direct, Yahoo, and Internet Shopping Network to build his business. This case,... View Details

Keywords: Business Startups; Debates; Entrepreneurship; Growth and Development; Growth Management; Management Style; Product Launch; Multi-Sided Platforms; Problems and Challenges; Information Technology; Information Technology Industry; Web Services Industry

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April 2021
Case

ClearChoice Dental Implant Centers

By: Robert S. Kaplan, Ashiana Jivraj and Jane Barrow

The case illustrates the application of value-based health care to dental medicine. ClearChoice Dental Implant Centers was a rapidly-growing network of dentist-owned independent implant clinics. The targeted market included 23 million people, 15% of the US adult... View Details

Keywords: Value-based Health Care; Dental Medicine; Growth and Development Strategy; Expansion; Business Strategy; Customer Value and Value Chain; Customer Focus and Relationships; Health Industry; United States

2021
Working Paper

First Law of Motion: Influencer Video Advertising on TikTok

By: Jeremy Yang, Juanjuan Zhang and Yuhan Zhang

This paper engineers an intuitive feature that is predictive of the causal effect of influencer video advertising on product sales. We propose the concept of m-score, a summary statistic that captures the extent to which a product is advertised in the most engaging... View Details

Keywords: Influencer Advertising; Video Advertising; Computer Vision; Machine Learning; Advertising; Online Technology

SSRN

February 2023
Article

OTC Intermediaries

By: Andrea L. Eisfeldt, Bernard Herskovic, Sriram Rajan and Emil Siriwardane

We study the effect of dealer exit on prices and quantities in a model of an over-the-counter (OTC) market featuring a core-periphery network with bilateral trading costs. The model is calibrated using regulatory data on the entire U.S. credit default swap (CDS) market... View Details

Keywords: OTC Markets; Intermediaries; Dealers; Credit Default Swaps; Risk Sharing; Financial Markets; Networks; Price; Risk and Uncertainty

September 2016 (Revised September 2017)
Case

Zalora Philippines: From Growth to Profitability

By: Donald Ngwe and Thales Teixeira

In May 2015 Paulo Campos, co-founder and CEO of Zalora Philippines, found himself at a crucial turning point in his young company’s development. In just three years, Zalora had come from entering the Philippine fashion retail industry as an unknown quantity to becoming... View Details

Keywords: Internet and the Web; Business Subsidiaries; Business Growth and Maturation; Fashion Industry; Retail Industry; Sweden; Southeast Asia; Philippines

November 2023
Case

Tata Group in 2021: Pursuing Profits through Purpose

By: Tarun Khanna, Krishna G. Palepu and Vidhya Muthuram

October 8, 2021: Tata Sons won a bid to acquire India’s national carrier Air India, marking the airline's return to its original owners after 68 long years. The winning bid of $2.4 billion gave Tata Sons full ownership of the airline and its coveted network of 6,200... View Details

Keywords: Corporate Strategy; Mission and Purpose; Corporate Social Responsibility and Impact; Emerging Markets; Mergers and Acquisitions; Ownership; Air Transportation; Air Transportation Industry; India

March 2010 (Revised October 2010)
Case

The Huffington Post

By: Thomas R. Eisenmann, Toby E. Stuart and David Kiron

In Feb. 2010, management of the Huffington Post, a fast-growing but not-yet-profitable Internet newspaper that aggregates blog posts from unpaid contributors and excerpts of stories originally published by other news sites, faces a number of decisions about its growth... View Details

Keywords: Networks; Business Model; Cost vs Benefits; Internet and the Web; Entrepreneurship; Growth and Development Strategy; Publishing Industry; Media and Broadcasting Industry

Teaching Interest

Agribusiness Seminar - Executive Education

By: David E. Bell

In the agribusiness industry, every year brings new trends and challenges. While demand continues to grow, consumer needs shift, production challenges increase, and evolving technology impacts every part of the value chain. The complex... View Details

28 May 2025
News

Harvard Business School Announces 2025-2026 Leadership Fellows

August 1990
Case

Legacy Fund, Inc.

By: Jeffry A. Timmons and James Weber

Two young HBS graduates propose to create a new venture capital fund in 1989. The case focuses on: 1) evaluation of the venture capital industry; 2) whether there is an opportunity for a new specialized fund; 3) the structuring of risks and rewards in the fund; 4)... View Details

Keywords: Venture Capital; Product Design; Investment Funds; Financial Services Industry

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January 1995 (Revised June 1997)
Case

Walt Disney Company, 1994: A Tumultuous Year

By: David J. Collis and Elizabeth Wynne Johnson

Focuses on a six-month period in 1994, during which the company experienced a series of dramatic upheavals. The events described include: 1) the sudden death of company president Frank Wells; 2) a health crisis facing Chairman Michael Eisner; 3) the "departure" of... View Details

Keywords: Business Divisions; Business Exit or Shutdown; Business Startups; Resignation and Termination; Crisis Management; United States

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06 Aug 2019
Video

Tackling the housing crisis one renovation at a time

January 2000 (Revised February 2007)
Case

Asia Renal Care

Presents a business plan for a start-up company focused on building a network of high-quality dialysis centers in the Asia-Pacific region. Includes a detailed financial forecast. An executable spreadsheet is available by contacting HBSP Customer Service at... View Details

Keywords: Business Plan; Forecasting and Prediction; Business Startups; Financial Strategy; Medical Devices and Supplies Industry; Asia