Publications
Publications
Show Results For
- All HBS Web
(307)
- Faculty Publications (64)
Page 1 of 64
Results →
- 2025
- Working Paper
Navigating Choppy Waters: How U.S. Trade Policy Uncertainty Affects Small Businesses
By: David Atkin, Zoë Cullen and Ebehi Iyoha
This paper explores the impact of recent changes in the US trade policy environment
on small businesses. Drawing on a survey of more than 4,000 small businesses conducted
between March 22 and 31, 2025, we examine firms’ knowledge, expectations, and
decisions during... View Details
- 2024
- Working Paper
LASH Risk and Interest Rates
By: Laura Alfaro, Saleem Bahaj, Robert Czech, Jonathan Hazell and Ioana Neamtu
We introduce a framework to understand and quantify a form of liquidity risk that we dub Liquidity After Solvency Hedging or “LASH” risk. Financial institutions take LASH risk when they hedge against losses, using strategies that lead to liquidity needs when the value... View Details
- December 2023
- Case
The American Bully XL
By: Robin Greenwood, Richard S. Ruback, Johnathan Sun and Robert Ialenti
The American Bully XL, first introduced to the United Kingdom around 2014, had been held responsible for a disproportionate share of both dog-related attacks and deaths. The case discusses the announcement, in October 2023, that the dog breed would be added to a list... View Details
- September 2023 (Revised September 2024)
- Technical Note
Measuring and Managing Social Impact
By: Brian Trelstad, Gerald Chertavian and Susan Pinckney
A brief overview of how to measure social impact at nonprofits, social organizations, and impact investments. View Details
Keywords: Analysis; Change; Transformation; Decision Making; Cost vs Benefits; Decision Choices and Conditions; Decisions; Forecasting and Prediction; Public Sector; Entrepreneurship; Social Entrepreneurship; Fairness; Entrepreneurial Finance; Governance; Governing and Advisory Boards; Policy; Innovation and Management; Knowledge Acquisition; Knowledge Use and Leverage; Goals and Objectives; Growth and Development Strategy; Growth Management; Management Analysis, Tools, and Techniques; Management Practices and Processes; Resource Allocation; Measurement and Metrics; Standards; Strength and Weakness; Mission and Purpose; Success; Performance; Performance Evaluation; Philanthropy and Charitable Giving; Strategic Planning; Programs; Risk and Uncertainty; Social Enterprise; Non-Governmental Organizations; Social Issues; United States
- 2023
- Article
Experimental Evaluation of Individualized Treatment Rules
By: Kosuke Imai and Michael Lingzhi Li
The increasing availability of individual-level data has led to numerous applications of individualized (or personalized) treatment rules (ITRs). Policy makers often wish to empirically evaluate ITRs and compare their relative performance before implementing them in a... View Details
- August 2022
- Case
Atlanta Ransomware Attack (A)
By: Amit Goldenberg and Julian Zlatev
This case describes the March 2018 Ransomware attack on the information technology (IT) systems of the city of Atlanta and the response by Mayor Keisha Lance Bottoms and her administration. The case includes a brief background on Bottoms and her young administration at... View Details
Keywords: Crime and Corruption; Decision Making; Cost vs Benefits; Decision Choices and Conditions; Decisions; Ethics; Values and Beliefs; Government and Politics; Government Administration; Information Technology; Cybersecurity; Information Management; Leadership; Management; Crisis Management; Management Teams; Negotiation; Risk and Uncertainty; Social Psychology; Perception; Personal Characteristics; Perspective; Power and Influence; Society; Public Administration Industry; United States; Georgia (state, US); Atlanta
- August 2022
- Supplement
Atlanta Ransomware Attack (B)
By: Amit Goldenberg and Julian Zlatev
This case describes the March 2018 Ransomware attack on the information technology (IT) systems of the city of Atlanta and the response by Mayor Keisha Lance Bottoms and her administration. The case includes a brief background on Bottoms and her young administration at... View Details
Keywords: Crime and Corruption; Decision Making; Cost vs Benefits; Decision Choices and Conditions; Decisions; Ethics; Values and Beliefs; Government and Politics; Government Administration; Information Technology; Cybersecurity; Information Management; Leadership; Management; Crisis Management; Management Teams; Negotiation; Risk and Uncertainty; Social Psychology; Perception; Personal Characteristics; Perspective; Power and Influence; Society; Public Administration Industry; United States; Atlanta; Georgia (state, US)
- July 2022
- Article
Countercyclical Prudential Buffers and Bank Risk-taking
By: Manuel Illueca, Lars Norden, Joseph Pacelli and Gregory F. Udell
We investigate the effects of countercyclical prudential buffers on bank risk-taking. We exploit the introduction of dynamic loan loss provisioning in Spain, mandating that banks use historical average loss rates in their estimation of loan loss provisions. We find... View Details
- Article
Policies to Influence Perceptions about COVID-19 Risk: The Case of Maps
By: Claudia Engel, Jonathan Rodden and Marco Tabellini
Choropleth disease maps have become an important tool for informing the public about the risks posed by COVID-19. In a survey conducted in the U.S. state of Georgia in June 2020, we randomly assigned respondents to view either of two maps. The first one reported... View Details
- February 2022 (Revised April 2022)
- Case
BUA Group
By: John D. Macomber, Pippa Tubman Armerding and Wale Lawal
BUA Group must decide between investments in cement, road building, power generation, or sugar. Private businesses are important to economic development in Africa. Students must assess the competitive nature of each of these industries, the magnitude of capital... View Details
- 2024
- Working Paper
What Triggers National Stock Market Jumps?
By: Scott R. Baker, Nicholas Bloom, Steven J. Davis and Marco Sammon
We examine newspapers the day after major stock-market jumps to evaluate the proximate cause, geographic source, and clarity of these events from 1900 in the US, 1930 in the UK and 1980 in 12 other countries. We find four main results. First, the United States plays an... View Details
- December 2021
- Article
Trade Policy Uncertainty and Stock Returns
By: Marcelo Bianconi, Federico Esposito and Marco Sammon
A recent literature has documented large real effects of trade policy uncertainty (TPU) on trade, employment, and investment, but there is little evidence that investors are compensated for bearing such risk. To quantify the risk premium associated with TPU, we exploit... View Details
- October 18, 2021
- Article
To Regulate Network-Based Platforms, Look at Their Data
By: Chiara Farronato and Daniel Björkegren
Historically, antitrust authorities have taken a laissez-faire approach under the assumption that it is better to err on the side of not intervening when there is uncertainty. This has allowed companies like Google and Facebook to go on a shopping spree to acquire... View Details
- October 2021 (Revised February 2022)
- Case
Green Hydrogen in Chile
By: Tarun Khanna, Jenyfeer Martínez Buitrago and Mariana Cal
In 2020, the Chilean government wants to promote green hydrogen, a technology with high potential to help mitigate climate change. President Sebastián Piñera, aware of the country's advantages to produce green hydrogen competitively, asks Energy Minister Juan Carlos... View Details
Keywords: COVID-19 Pandemic; Decision Making; Alternative Energy; Renewable Energy; Climate Change; Environmental Sustainability; Green Technology; Financial Instruments; Energy Policy; Government Administration; Strategy; Government and Politics; Social Issues; Energy Industry; Latin America; South America; Chile
- 2021
- Article
Designing, Not Checking, for Policy Robustness: An Example with Optimal Taxation
By: Benjamin B. Lockwood, Afras Sial and Matthew C. Weinzierl
Economists typically check the robustness of their results by comparing them across plausible ranges of parameter values and model structures. A preferable approach to robustness—for the purposes of policymaking and evaluation—is to design policy that takes these... View Details
- January 2021 (Revised August 2021)
- Case
ByteDance: TikTok and the Trials of Going Viral
By: William C. Kirby and John P. McHugh
In 2020, TikTok became the most valuable start-up ever. The short-form, video-sharing social media platform emerged as the crown jewel of the Chinese technology firm ByteDance, realizing 850 million monthly users and an estimated worth of $180 billion. However, a... View Details
Keywords: China; Technology; Startup; Start-up; International Strategy; Global Strategy And Leadership; Innovation; Political Risk; Regulations; Trump; Foreign Policy; Foreign Investment; Chinese Internet Market; Global Strategy; Crisis Management; Risk and Uncertainty; Entrepreneurship; Globalized Economies and Regions; Government Legislation; Innovation and Management; Governing Rules, Regulations, and Reforms; Internet and the Web; Social Media; Technology Industry; China; United States
- December 2020
- Article
Sovereign Debt Portfolios, Bond Risks, and the Credibility of Monetary Policy
By: Wenxin Du, Carolin Pflueger and Jesse Schreger
We document that governments whose local currency debt provides them with greater hedging benefits actually borrow more in foreign currency. We introduce two features into a government's debt portfolio choice problem to explain this finding: risk-averse lenders and... View Details
- 2020
- Working Paper
Designing, Not Checking, for Policy Robustness: An Example with Optimal Taxation
By: Benjami Lockwood, Afras Y. Sial and Matthew C. Weinzierl
Economists typically check the robustness of their results by comparing them across plausible ranges of parameter values and model structures. A preferable approach to robustness—for the purposes of policymaking and evaluation—is to design policy that takes these... View Details
- May 2020 (Revised March 2022)
- Case
The Coronavirus (COVID-19) Pandemic and the Global Economy (A)
By: Alberto Cavallo and Christian Godwin
In April 2020, the world struggled to contain the exponential escalation of the coronavirus (COVID-19) pandemic. Dozens of countries had imposed restrictions on travel, work, and social gatherings. A large share of the global population was under lockdowns and... View Details
Keywords: COVID-19 Pandemic; Demand and Consumers; Supply and Industry; Finance; Central Banking; Financial Markets; International Finance; Globalization; Government and Politics; Health Pandemics; Decision Making; Macroeconomics; Employment; Crisis Management; Supply Chain; Risk and Uncertainty; Air Transportation Industry; Banking Industry; Consumer Products Industry; Employment Industry; Financial Services Industry; Food and Beverage Industry; Health Industry; Medical Devices and Supplies Industry; Pharmaceutical Industry; Public Administration Industry; Retail Industry; Service Industry; Shipping Industry; Tourism Industry; Travel Industry; Asia; China; Europe; Latin America; Africa; United States
- February 2020 (Revised January 2022)
- Case
Getting Brexit Done
By: Alberto Cavallo
In the early hours of Friday, December 13, 2019, a triumphant Boris Johnson, the UK Prime Minister, stood in front of his supporters and declared, “We did it – we pulled it off, didn’t we? We broke the deadlock, [. . .] we smashed the roadblock. [. . .] This election... View Details