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- April 2023 (Revised April 2025)
- Case
Eike Batista: Making or Breaking Brazil
By: Geoffrey Jones, Pedro Magalhães, Daniel Tong and Marcel Anduiza
This case explores the meteoric rise and fall of Eike Batista, once Brazil’s richest person and the world’s seventh wealthiest in 2012. Batista began his career by investing in gold mining in the Amazon, using the network his father had built after years serving as... View Details
- April 19, 2023
- Editorial
Extreme Views Are More Attractive Than Moderate Ones
By: Amit Goldenberg
Do you ever feel like everyone on social media has a more extreme viewpoint than your own? We often blame social media companies for the cacophony of politically extreme opinions around us. After all, these companies are generally motivated to promote the most... View Details
- April 6, 2023
- Article
A New NFT Launch Strategy: The Wave Mint
By: Scott Duke Kominers and 1337 Skulls Sers
In an NFT project, the mint—the process by which tokens are initially allocated—largely determines who your community is and how they and the broader market view the project going forward. In this piece, we review a new minting strategy recently introduced by 1337... View Details
- 2023
- Article
Estimating Causal Peer Influence in Homophilous Social Networks by Inferring Latent Locations.
By: Edward McFowland III and Cosma Rohilla Shalizi
Social influence cannot be identified from purely observational data on social networks, because such influence is generically confounded with latent homophily, that is, with a node’s network partners being informative about the node’s attributes and therefore its... View Details
- March 2023
- Case
Mirakl: Growing The Marketplace Economy
By: Antonio Moreno, Santiago Gallino and Emilie Billaud
Mirakl provided the technology and seller network required for companies like Macy's, Best Buy, Walmart, Siemens, or Carrefour to simply design, launch, and administer a marketplace that included products from third-party sellers. What began as a basic business idea in... View Details
- March 2023 (Revised June 2023)
- Teaching Note
Ransomware Attack at Springhill Medical Center
By: Suraj Srinivasan and Li-Kuan (Jason) Ni
Teaching Note for HBS Case No. 123-065. In July, 2019, Springhill Medical Center (“SMC”) in Mobile, Alabama fell prey to a malicious ransomware attack that crippled the hospital’s internal network systems and public-facing web page. While the hospital rushed to... View Details
Keywords: Disruption; Communication; Communication Strategy; Decision Making; Decision Choices and Conditions; Judgments; Corporate Accountability; Corporate Disclosure; Corporate Governance; Governance Controls; Policy; Employees; News; Cybersecurity; Digital Strategy; Information Infrastructure; Information Management; Internet and the Web; Crisis Management; Business or Company Management; Resource Allocation; Risk Management; Negotiation Tactics; Failure; Business and Stakeholder Relations; Attitudes; Behavior; Perception; Reputation; Trust; Public Opinion; Social Issues; Health Industry; Alabama; United States
- February 2023 (Revised February 2024)
- Case
Chari: Exploring Fintech in Morocco
By: Karen G. Mills and Ahmed Dahawy
This case examines the challenges and opportunities of doing business in Morocco. It highlights Morocco’s unique economy where cash remains a dominant player in the market despite global advancements in digitalization. The case also explores the various cultural and... View Details
- 21 Feb 2023
- Interview
How Miami Can Become a Global Climate Solutions Hub
Miami has been described as the epicenter of the climate change crisis in the country. But how can Miami transform its climate vulnerability into solutions? Harvard Business School professor Rosabeth Moss Kanter released a study in 2022 that focused on Miami’s climate... View Details
Keywords: Climate Change; ＂Solutions Approach; Network; Future; Change; Economic Growth; Environmental Management; City; Miami
- February 2023
- Teaching Note
Colette Phillips and GetKonnected: Creating Inclusive Ecosystems
By: Rosabeth M. Kanter and Ai-Ling Jamila Malone
Teaching Note for HBS Case No. 323-035. View Details
Keywords: Diversity; Ecosystem; Inclusion; People Of Color; Network; Racial Bias; Gender Bias; Entrepreneur; Entrepreneurial Ecosystems; Change; Change Barriers; Change Leadership; Community; Innovation; Pandemic; Impact; Systemic Racism; Minority-owned Businesses; Social and Collaborative Networks; Equity; Race; Small Business; Prejudice and Bias; Boston
- February 2023
- Case
Success Academy Charter Schools
By: Robin Greenwood, Joshua D. Coval, Denise Han, Ruth Page and Dave Habeeb
This stand-alone multimedia case follows the story of Eva Moskowitz and Success Academy, a network of high-performing charter schools in New York City. As a New York City councilor between 1999 and 2006, Moskowitz became frustrated over the inertia and dysfunction in... View Details
- February 2023
- Case
Ransomware Attack at Springhill Medical Center
By: Suraj Srinivasan and Li-Kuan (Jason) Ni
In July, 2019, Springhill Medical Center (“SMC”) in Mobile, Alabama, fell prey to a malicious ransomware attack that crippled the hospital’s internal network systems and public-facing web page. While the hospital rushed to securely restore the network, medical... View Details
Keywords: Disruption; Communication; Communication Strategy; Decision Making; Decision Choices and Conditions; Judgments; Corporate Accountability; Corporate Disclosure; Corporate Governance; Governance Controls; Policy; Employees; News; Cybersecurity; Digital Strategy; Information Infrastructure; Information Management; Internet and the Web; Crisis Management; Resource Allocation; Risk Management; Negotiation Tactics; Failure; Business and Stakeholder Relations; Attitudes; Behavior; Perception; Reputation; Trust; Public Opinion; Social Issues; Health Industry; United States; Alabama
- February 2023 (Revised March 2023)
- Case
Hey, Insta & YouTube, Are You Watching TikTok?
In early 2023, the entertainment app TikTok reached close to 1 billion users globally, placing it 4th behind the leading social networks of Facebook, YouTube, and Instagram. Featuring a sophisticated recommendation engine, TikTok mastered the art of keeping users... View Details
- 2023
- Working Paper
Networking Frictions: Evidence from Entrepreneurial Networking Events in Lomé
By: Stefan Dimitiadis and Rembrand Koning
Spatial proximity between firms plays a crucial role in entrepreneurship by creating knowledge spillovers, enabling resource sharing, and sparking productivity gains. Building on these insights, research has explored whether institutions and organizations can engineer... View Details
- 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
- January 2023
- Case
Natura: Weathering the Pandemic at Brazil's Cosmetic Giant
By: Brian Trelstad, Pedro Levindo and Carla Larangeira
Brazil's Natura, a multi-brand cosmetics group, has taken several measures to safeguard the livelihoods of its thousands of employees and millions of sales representatives during the COVID-19 health and economic crisis. The company has also made strides in its efforts... View Details
Keywords: COVID-19 Pandemic; ESG Reporting; Acquisition; Customer Focus and Relationships; Decision Making; Social Entrepreneurship; Environmental Sustainability; Environmental Management; Climate Change; Ethics; Moral Sensibility; Values and Beliefs; Global Strategy; Corporate Governance; Health Pandemics; Human Resources; Human Capital; Crisis Management; Growth and Development Strategy; Marketing; Distribution Channels; Supply Chain; Corporate Social Responsibility and Impact; Mission and Purpose; Organizational Culture; Customer Ownership; Relationships; Business and Community Relations; Business and Stakeholder Relations; Networks; Partners and Partnerships; Science-Based Business; Reputation; Human Needs; Social Issues; Strategy; Equality and Inequality; Beauty and Cosmetics Industry; Brazil; Latin America
- January 2023
- Module Note
Network Effects in Technology
By: Andy Wu and Matt Higgins
In business and strategy contexts, network effects are often accompanied by bandwagon (or herding) effects, positive feedback loops (or accumulated advantage effects), and market tipping (or winner-take-all dynamics). Though these phenomena are often grouped together... View Details
- January 2023 (Revised January 2023)
- Case
Belden and Digital Transformation: From Product Sales to Solutions Sales
By: Frank V. Cespedes and Amy Klopfenstein
This case concerns the industrial automation division at Belden, a hardware manufacturer. While Belden historically sold products such as cables, wires, and other networking devices, EVP of Industrial Automation Ashish Chand recognized that IT vendors were entering the... View Details
- 2023
- Article
Evaluating Explainability for Graph Neural Networks
By: Chirag Agarwal, Owen Queen, Himabindu Lakkaraju and Marinka Zitnik
As explanations are increasingly used to understand the behavior of graph neural networks (GNNs), evaluating the quality and reliability of GNN explanations is crucial. However, assessing the quality of GNN explanations is challenging as existing graph datasets have no... View Details
Keywords: Analytics and Data Science
- 2023
- Chapter
Generalized Matching: Contracts and Networks
By: John William Hatfield, Ravi Jagadeesan, Scott Duke Kominers, Alexandru Nichifor, Michael Ostrovsky, Alexander Teytelboym and Alexander Westkamp
- January 2023
- Article
Social Networks, Ethnicity, and Entrepreneurship
By: William R. Kerr and Martin Mandorff
We study the relationship between ethnicity, occupational choice, and entrepreneurship. Immigrant groups in the United States cluster in specific business sectors. For example, Koreans are 34 times more concentrated in self-employment for dry cleaning than other... View Details