Publications

July 1997 (Revised August 1997)
Case

numeric investors l.p.

By: Andre F. Perold and Brian J. Tierney

Numeric Investors manages equity portfolios with the use of a momentum model and a value model. The momentum model is based on earnings surprise and analysts' revisions of their earnings estimates. The firm offers long-short as well as long-only strategies, and its... View Details

Keywords: Asset Management; Cost; Equity; Financial Strategy; Investment; Investment Portfolio; Management; Product Development; Performance Efficiency; Business Strategy

16 Apr 2007
Research & Ideas

Delivering the Digital Goods: iTunes vs. Peer-to-Peer

the Market for Digital Information Goods," is among the first efforts to study the interactions of two entirely new and radical business models operating in the same market. Sean Silverthorne: What... View Details

Keywords: by Sean Silverthorne; Music

February 2024
Teaching Note

TimeCredit

By: Emanuele Colonnelli, Raymond Kluender and Shai Benjamin Bernstein

Teaching Note for HBS Case No. 824-139. TimeCredit is an artificial intelligence (AI) startup that is developing large language models (LLMs) to generate accounting memos. The case follows Ndonga Sagnia, a Gambian Harvard Business School MBA student with an accounting... View Details

Keywords: Accounting; Business Startups; Entrepreneurship; Financing and Loans; AI and Machine Learning; Entrepreneurial Finance; Identity; Partners and Partnerships; Technology Industry

15 Feb 2017
Op-Ed

What Africa Can Teach the United States About Funding Infrastructure Projects

the great cities of America. But there will likely be massive arguments about how to raise the money and how to invest it. The solution may lie in finance models that have proven successful in several nations across the Atlantic Ocean—not... View Details

Keywords: by John Macomber; Construction

2016
Working Paper

Markets for Ideas: Prize Structure, Entry Limits, and the Design of Ideation Contests

By: Pavel Kireyev

Contests are a popular mechanism for the procurement of innovation. In marketing, design, and other creative industries, firms use freelance marketplaces to organize contests and obtain high-quality ideas for ads, new products, and even business strategies from... View Details

Keywords: Idea Generation; Crowdsourcing; Contest Design; Structural Estimation; Motivation and Incentives; Competition; Innovation and Invention

SSRN

Read Now

December 2017 (Revised April 2018)
Case

Area One Farms

By: Forest Reinhardt, Jose B. Alvarez and Annelena Lobb

In 2017, Joelle Faulkner, CEO of Area One Farms, a Canadian private-equity fund focused on investing in the best Canadian farms and helping them expand, considered the merits and disadvantages of expanding her business to the U.S. While the markets shared some... View Details

Keywords: Expansion; Decision Choices and Conditions; Private Equity; Canada; United States

November 2017
Case

Poppy: A Modern Village for Childcare

By: Thomas Eisenmann and Jeff Huizinga

In 2017, management at Poppy, which matched families that required occasional childcare with thoroughly vetted caregivers, was formulating plans for the Seattle-based seed-stage startup’s next phase of expansion. One option was to grow using the same business model... View Details

Keywords: Entrepreneurship; Market Design; Multi-Sided Platforms; Marketplace Matching; Expansion; United States

June 2020 (Revised October 2020)
Case

What Went Wrong with Boeing's 737 Max?

By: William W. George and Amram Migdal

This case describes the development of the Boeing 737 Max airplane model and the events leading up to two tragic plane crashes, in which a total of 346 people died: the crash of Lion Air flight 610 on October 29, 2018, in Indonesia, and the crash of Ethiopian Airlines... View Details

Keywords: Communication; Communication Intention and Meaning; Communication Strategy; Forms of Communication; Announcements; Decision Making; Decision Choices and Conditions; Judgments; Ethics; Moral Sensibility; Values and Beliefs; Globalization; Global Strategy; Governance; Corporate Accountability; Governance Controls; Human Resources; Resignation and Termination; Leadership; Leadership Style; Management; Business or Company Management; Crisis Management; Management Practices and Processes; Management Skills; Management Style; Management Systems; Risk Management; Time Management; Markets; Demand and Consumers; Digital Platforms; Supply and Industry; Duopoly and Oligopoly; Industry Structures; Operations; Product Development; Organizations; Organizational Change and Adaptation; Organizational Culture; Outcome or Result; Failure; Success; Planning; Strategic Planning; Problems and Challenges; Relationships; Business and Community Relations; Business and Government Relations; Business and Stakeholder Relations; Risk and Uncertainty; Safety; Strategy; Transportation; Air Transportation; Aerospace Industry; Air Transportation Industry; Africa; Ethiopia; Asia; Indonesia; North and Central America; United States; Seattle; Chicago

August 1999 (Revised January 2002)
Case

Brita Products Company, The

By: John A. Deighton

Clorox's Brita skillfully exploits a tide of water safety concerns, growing a home water (filtration) business from inception to a 15% U.S. household penetration in ten years. The dilemma in the case arises as the period of increasing returns seems to be drawing to a... View Details

Keywords: Customer Value and Value Chain; Acquisition; Retention; Safety; Natural Environment; Emerging Markets; Investment Return; Equity; Demand and Consumers; United States

Research Summary

Overview

Paul is primarily interested in studying explainable machine learning (ML), digital transformation, and data science operations. He works on research that explores how stakeholders within organizations can use machine learning to make better decisions. In particular,... View Details

October 2023 (Revised January 2025)
Case

Ӧzyeğin Social Investments: A Legacy of Giving

By: Christina R. Wing, Zeshan Gondal and Brittany L. Logan

This case explores the work of Özyeğin Social Investments, founded by Hüsnü Özyeğin, one of Turkey's most successful entrepreneurs. With a focus on education, health, gender equality, rural development, and disaster relief in Turkey, Özyeğin Social Investments and the... View Details

Keywords: Philanthropy and Charitable Giving; Family Business; Business Model; Social Entrepreneurship; Social Enterprise; Turkey

June 2013
Case

Multiasistencia: Redefining the Relationship with Its Service Professionals

By: F. Asis Martinez-Jerez, Maria Garcia Perez and Katherine M. Miller

Multiasistencia, a major Spanish BPO of insurance repairs, is changing the relational contract with its service professionals from a referral model to a guaranteed workload one. View Details

Keywords: Outsourcing; Incentives; Relational Contracts; Business Model; Motivation and Incentives; Job Cuts and Outsourcing; Contracts; Insurance Industry; Spain

December 2010 (Revised January 2011)
Case

Los Grobo: Farming's Future?

By: David E. Bell and Cintra Scott

This case describes the international expansion plans of the second largest grain producer in Latin America, Los Grobo. Based in Argentina with US$550 million in annual sales, Los Grobo also operated in Brazil, Uruguay, and Paraguay--usually with local partners. Los... View Details

Keywords: Agribusiness; Business Model; Ownership; Networks; Expansion; Information Technology; Agriculture and Agribusiness Industry; Argentina

August 2018 (Revised February 2023)
Case

Hubble Contact Lenses: Data Driven Direct-to-Consumer Marketing

By: Jill Avery and Ayelet Israeli

As its Series A extension round approaches, the founders of Hubble, a subscription-based, social-media fueled, direct-to-consumer (DTC) brand of contact lenses, are reflecting on the marketing strategies that have taken them to a valuation of $200 million and debating... View Details

08 Mar 2021
In Practice

COVID Killed the Traditional Workplace. What Should Companies Do Now?

A year ago, COVID-19 forced many companies to send employees home—often with a laptop and a prayer. Now, with COVID cases subsiding and vaccinations rising, the prospect of returning to old office routines appears more possible. But will employees want to flock back to... View Details

Keywords: by Dina Gerdeman

April 2021
Case

Transforming BlackBerry: From Smartphones to Software

By: Ranjay Gulati and Nicole Tempest Keller

On the verge of failure, BlackBerry brought in John Chen as CEO in 2013 to orchestrate a bold turnaround of the company. Once an iconic leader in the smartphone market, BlackBerry was best known for its tactile QWERTY keyboard, strong security, and a focus on business... View Details

Keywords: Pivot; Managing Change; Turnaround; Smartphone; Change Management; Leading Change; Transformation; Organizational Change and Adaptation; Digital Platforms; Change; Information Infrastructure; Applications and Software; Competitive Strategy; Cybersecurity; Technology Industry; Transportation Industry; Canada

2023
Working Paper

Toward a Better Understanding of Open Ecosystems: Implications for Policymakers

By: Feng Zhu and Carmelo Cennamo

The digital realm is undergoing a significant transformation, marked by the emergence of platform business models and the concept of open ecosystems. This paper delves into the intricate nature of ecosystem openness, underscoring the point that the openness of... View Details

Keywords: Digital Platforms; Business Model; Governance; System; Situation or Environment