Publications

December 2021 (Revised May 2025)
Case

Bed Bath & Beyond: The New Strategy to Drive Shareholder Value

By: Benjamin C. Esty and Daniel W. Fisher

At one time, Bed Bath & Beyond was one of the most successful specialty retailers in the United States—its growth and profit margins far exceeded both peer retailers in the home goods market as well as many other discount retailers. But in 2014, its stock price peaked,... View Details

Keywords: Competitive Strategy; Competitive Advantage; Value Creation; Diversification; Corporate Governance; Leading Change; Performance Evaluation; Valuation; Investment Activism; Retail Industry; Consumer Products Industry; United States

October 2021
Case

Yildiz Holding's Corporate Strategy: Managing Diversification for Growth

By: Juan Alcácer and Esel Çekin

The case opens in May 2018 with Nurtaç Ziyal Afridi, chief strategy and growth officer of Yıldız Holding, a Turkish conglomerate, reflecting on the group’s diversification journey. In ten years, the group had achieved a remarkable growth through diversification: seven... View Details

Keywords: Strategy; Diversification; Growth Management; Mergers and Acquisitions; Global Strategy; Restructuring; Food and Beverage Industry; North America; United Kingdom; Turkey; Asia

2021
Working Paper

Saving for a Dry Day: Coal, Dams, and the Energy Transition

By: Michele Fioretti and Jorge Tamayo

Renewable generation creates a tradeoff between current and future energy production as generators produce energy by releasing previously stored resources. Studying the Colombian market, we find that diversified firms strategically substitute fossil fuels for... View Details

Keywords: Energy Generation; Renewable Energy; Production; Green Technology Industry; Energy Industry; Colombia

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August 2021
Case

BYJU’S: EdTech Giant Investing in Brick and Mortar

By: John J-H Kim and Rachna Tahilyani

The founder and CEO of BYJU’S, India’s largest edtech firm and one of the world’s most valuable edtech companies, is considering acquiring Aakash Educational Services (Aakash), one of India’s largest brick-and-mortar test-prep firms, for $1 billion. Is this a good... View Details

Keywords: Edtech; Business Strategy; Diversification; Investment; Acquisition; Education Industry; Asia; India; United States

May 2021
Case

Inclusive Innovation at Mass General Brigham

By: Katherine Baldiga Coffman and Olivia Hull

Massachusetts General Brigham (MGB) Chief Innovation Officer Christopher Coburn had overseen a period of exciting transformation and growth in healthcare innovation at MGB. In November 2019, the health system was the largest recipient of National Institutes of Health... View Details

April 2021
Case

Coca-Cola: Preparing for the Next 100 Years

By: Cynthia A. Montgomery and James Weber

In early 2020, James Quincey, the 14th chair of the 133-year old The Coca-Cola Company, was in the midst of a years-long transformation of Coca-Cola from being the leading carbonated soft drink (CSD) beverage company into a total beverage company. The company’s... View Details

Keywords: Strategy; Diversification; Change Management; Organizational Culture; Environmental Sustainability; Food and Beverage Industry; United States

March 2021
Case

Astralis Group: Determining a Brand Strategy

By: Benjamin C. Esty, Mette Fuglsang Hjortshoej and Emilie Billaud

After launching a Danish esports company in July 2019, and going public in December 2019 with multiple brands associated with different games, the Astralis leadership team was contemplating a shift to a single, corporate brand. While the original arguments for... View Details

February 2021
Case

Yellow Digital Retailers: Providing Solar Electricity to Transform Rural Africa

By: Lynda M. Applegate, Frank V. Cespedes and Michael Norris

In 2020, Mike Heyink and Maya Stewart, co-founders of the Pay-as-you-Go Solar company Yellow were considering how to grow their startup. They had achieved some success in their first market, Malawi, and had recently entered Uganda, where business was slower. What did... View Details

Keywords: Solar Energy; Business Model; Business Startups; Developing Countries and Economies; Alternative Energy; Renewable Energy; Social Entrepreneurship; Green Technology; Salesforce Management; Diversification; Expansion; Energy Industry; Africa; South Africa; Malawi; Uganda

January 2021 (Revised March 2021)
Case

Jumia's Path to Profitability

By: Ramon Casadesus-Masanell, Pippa Tubman Armerding and Gamze Yucaoglu

The case opens in September 2019 as Sacha Poignonnec and Jeremy Hodara, co-founders and co-CEOs of Jumia, the leading Pan-African e-commerce platform, are contemplating the company’s path to profitability in the aftermath of a fragile investor sentiment, as the company... View Details

October 2020 (Revised March 2021)
Supplement

Migros Turkey: Scaling Online Operations During COVID-19 (C)

By: Antonio Moreno and Gamze Yucaoglu

The case opens in August 2020 as Ozgur Tort and Mustafa Bartin, CEO and chief large-format and online retail officer of Migros Ticaret A.S. (Migros), Turkey’s oldest and one of its largest supermarket chains, are navigating Migros through COVID-19 and the unprecedented... View Details

Keywords: Business Model; Strategy; Digital Platforms; Information Technology; Technology Adoption; Value Creation; Globalization; Competition; Expansion; Logistics; Profit; Resource Allocation; Diversification; Corporate Strategy; Crisis Management; Health Pandemics; Strategic Planning; Food and Beverage Industry; Turkey

July 2020 (Revised January 2021)
Case

Pattern Brands

By: Sunil Gupta, Elie Ofek and Julia Kelley

In March 2020, direct-to-consumer (DTC) company Pattern Brands needed to decide how to allocate resources across its different brands. Pattern Co-Founders Nick Ling and Emmett Shine hoped to avoid the pitfalls faced by some DTC companies—such as inability to scale and... View Details

January 2020
Case

Hurtigruten: Sailing into Warm Water?

By: Jan W. Rivkin and Kerry Herman

As this case opens in 2019, CEO Daniel Skjeldam and his team have successfully reinvigorated Hurtigruten, a storied but struggling Norwegian ferry and cruise operator, and have established it as the leading provider of polar expedition cruises. They now face a critical... View Details

Keywords: Relative Cost Analysis; Market Attractiveness; Diversification; Decision Making; Expansion; Tourism Industry; Norway

November 2019
Supplement

United Technologies Corp.: Are the Parts Worth More Than the Whole?

By: Benjamin C. Esty and Daniel Fisher

After spending more than 50 years creating a diversified industrial conglomerate that Fortune Magazine described as “arguably the most profitable conglomerate in America” in 2014, UTC’s CEO Greg Hayes was under pressure from activist investors (Dan Loeb and Bill... View Details

Keywords: Corporate Strategy; Business Conglomerates; Financial Management; Corporate Governance; Organizational Structure; Diversification; Valuation; Investment Activism; Financial Strategy; Investment Funds; Value Creation; Aerospace Industry; Electronics Industry; Industrial Products Industry; United States

October 2019
Case

GRIT Fitness

By: Lynda M. Applegate and Olivia Hull

In December 2018, GRIT Fitness was a growing chain of boutique fitness studios offering a variety of workout classes, including weightlifting, high intensity interval training, and cardio dance. With 400 members and three Dallas studios, CEO Brittani Rettig believed... View Details

August 2019 (Revised February 2020)
Case

New Hope Liuhe: Building an Integrated Agri-Food Business

By: Forest L. Reinhardt, Shu Lin, Natalie Kindred and Nancy Hua Dai

In October 2018, LIU Chang (Angela), chairman of Beijing-based New Hope Liuhe (NHL), was considering the strategy of the firm. With $9 billion in sales and a presence in nearly 20 countries, NHL was China’s largest animal feed producer and a major pork and poultry... View Details

August 2019
Supplement

Rand Fishkin at Moz (B)

By: Thomas R. Eisenmann

Supplements the (A) case. View Details

Keywords: Startups; Scaling; Entrepreneurship; Failure; Business Startups; Diversification; Growth Management

August 2019
Supplement

Rand Fishkin at Moz (C)

By: Thomas R. Eisenmann

Supplements the (A) case. View Details

Keywords: Startups; Scaling; Entrepreneurship; Failure; Business Startups; Diversification; Growth Management

August 2019 (Revised March 2023)
Case

Rand Fishkin at Moz (A)

By: Thomas R. Eisenmann

In 2016, senior management at Moz, a venture capital–backed startup providing software tools for digital marketing professionals, must decide how to address a looming cash flow crisis precipitated by failed efforts to broaden its product line. Seattle-based Moz had... View Details

Keywords: Startups; Scaling; Entrepreneurship; Failure; Business Startups; Diversification; Growth Management; Technology Industry

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

Keywords: Recommender Systems; Personalization; Recommendation Diversity; Variety Seeking; Collaborative Filtering; Consumer Utility Models; Digital Media; Clickstream Analysis; Learning-to-rank; Consumer Behavior; Media; Customization and Personalization; Strategy; Mathematical Methods