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- All HBS Web
(120,188)
- Faculty Publications (590)
- 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
Goldenberg, Amit, and Julian Zlatev. "Atlanta Ransomware Attack (A)." Harvard Business School Case 923-009, August 2022.
- 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)
Goldenberg, Amit, and Julian Zlatev. "Atlanta Ransomware Attack (B)." Harvard Business School Supplement 923-010, August 2022.
- July 2022 (Revised September 2022)
- Case
Birla Carbon Egypt: Building Soft Power in a Foreign Country
By: Jeremy Friedman and Malini Sen
Birla Carbon, a flagship business of the nearly $60-billion global conglomerate and India-headquartered Aditya Birla Group (ABG), is one of the world's top manufacturers and suppliers of high-quality carbon black. The largest among its 16 manufacturing plants is Birla... View Details
Keywords: Acquisition; Family Business; Disruption; Transformation; Diversity; Trade; Energy; Values and Beliefs; Cross-Cultural and Cross-Border Issues; Global Strategy; Government and Politics; Private Ownership; Civil Society or Community; Risk and Uncertainty; Value Creation; Industrial Products Industry; Rubber Industry; Egypt; Africa; India; Asia; Atlanta; United States
Friedman, Jeremy, and Malini Sen. "Birla Carbon Egypt: Building Soft Power in a Foreign Country." Harvard Business School Case 723-003, July 2022. (Revised September 2022.)
- July 2022 (Revised January 2025)
- Case
Call of Fiduciary Duty: Microsoft Acquires Activision Blizzard
By: Jonas Heese, Joseph Pacelli and James Barnett
In January 2022, Microsoft announces its acquisition of the video game company Activision Blizzard, in a deal valued at $68.7 billion, which would make Microsoft the world’s third largest video game company. The deal came as Activision Blizzard faced gender pay... View Details
Keywords: Accounting; Goodwill Accounting; Analysis; Decision Making; Talent and Talent Management; Games, Gaming, and Gambling; Ethics; Leadership; Risk and Uncertainty; Mergers and Acquisitions; Lawsuits and Litigation; Entertainment and Recreation Industry; Video Game Industry; North America; California
Heese, Jonas, Joseph Pacelli, and James Barnett. "Call of Fiduciary Duty: Microsoft Acquires Activision Blizzard." Harvard Business School Case 123-011, July 2022. (Revised January 2025.)
- 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
Keywords: Banks; Bank Regulation; Macroprudential Policies; Bank Lending; Loan Loss Provisioning; Risk Taking; Banks and Banking; Financing and Loans; Governing Rules, Regulations, and Reforms; Risk and Uncertainty
Illueca, Manuel, Lars Norden, Joseph Pacelli, and Gregory F. Udell. "Countercyclical Prudential Buffers and Bank Risk-taking." Art. 100961. Journal of Financial Intermediation 51 (July 2022).
- 2022
- Article
Regulatory Treatment of Changes in Fair Value and the Composition of Banks' Investment Portfolios
By: Michael Iselin, Jung Koo Kang and Joshua Madsen
In their implementation of Basel III, U.S. bank regulators are again including changes in the fair value of available-for-sale (AFS) debt securities in Tier 1 capital, but only for the largest U.S. banks. This paper investigates a potential impact of expanding this... View Details
Keywords: Fair Value Accounting; SFAS 115; Basel III; Governing Rules, Regulations, and Reforms; Banks and Banking; Debt Securities; Credit; Risk and Uncertainty; Investment Portfolio; Decision Making; Banking Industry; United States
Iselin, Michael, Jung Koo Kang, and Joshua Madsen. "Regulatory Treatment of Changes in Fair Value and the Composition of Banks' Investment Portfolios." Journal of Financial Reporting 7, no. 1 (2022): 123–143.
- 2022
- Report
The First Four Healthy Building Strategies Every Building Should Pursue to Reduce Risk from COVID-19
By: Joseph G. Allen, Emily Jones, Marissa V. Rainbolt, Linsey C. Marr, David Michaels, Leslie R. Cadet, Shelly L. Miller, Meira Levinson, Lidia Morawska, Richard L. Corsi, Nira R. Pollock, Yuguo Li, Alasdair P.S. Munro, Kelly Grier, Qingyan Chen, John D. Macomber and Xiaodong Cao
Understanding of the most probable transmission routes and identifying the risk environments for disease spread should always be among the first critical steps in the response to future disease threats. This is one of the most vital public health lessons of the... View Details
Keywords: Health Pandemics; Buildings and Facilities; Risk and Uncertainty; Health Industry; Education Industry; Real Estate Industry
Allen, Joseph G., Emily Jones, Marissa V. Rainbolt, Linsey C. Marr, David Michaels, Leslie R. Cadet, Shelly L. Miller, Meira Levinson, Lidia Morawska, Richard L. Corsi, Nira R. Pollock, Yuguo Li, Alasdair P.S. Munro, Kelly Grier, Qingyan Chen, John D. Macomber, and Xiaodong Cao. "The First Four Healthy Building Strategies Every Building Should Pursue to Reduce Risk from COVID-19." Report, Lancet COVID-19 Commission, Task Force on Safe School, Safe Work, Safe Travel, July 2022. (COVID-19 Commission.)
- April 6, 2022
- Article
In Uncertain Times, Big Companies Need to Take Care of Their Suppliers
By: Willy C. Shih
Many large original equipment manufacturers (OEMs) have long been ruthless with their suppliers, demanding extremely low prices and loading them up with risks. Given that the current turmoil buffeting global supply chains is unlikely to end anytime soon, OEMs should... View Details
Keywords: Supplier Relationship; Supply Chain Management; Supply Chain; Relationships; Risk and Uncertainty; Auto Industry; Industrial Products Industry; Manufacturing Industry; United States
Shih, Willy C. "In Uncertain Times, Big Companies Need to Take Care of Their Suppliers." Harvard Business Review Digital Articles (April 6, 2022).
- 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
Engel, Claudia, Jonathan Rodden, and Marco Tabellini. "Policies to Influence Perceptions about COVID-19 Risk: The Case of Maps." Science Advances 8, no. 11 (March 18, 2022).
- February 2022 (Revised May 2022)
- Case
Jaypee Infratech and the Indian Bankruptcy Code
By: Kristin Mugford, William Vrattos and Radhika Kak
In 2016, India passed a new bankruptcy law (IBC) to counter a brewing bank crisis and increased corporate distress. Homebuilder Jaypee Infratech, one of India largest distressed companies (the “dirty dozen”) began restructuring under the IBC in 2017. Two years later,... View Details
Keywords: Restructuring; Decisions; Judgments; Voting; Developing Countries and Economies; Financial Crisis; Public Sector; Asset Pricing; Borrowing and Debt; Corporate Finance; Credit; Insolvency and Bankruptcy; Debt Securities; Bonds; Investment Return; Price; Government Legislation; Laws and Statutes; Bids and Bidding; Business and Stakeholder Relations; Risk and Uncertainty; Valuation; Real Estate Industry; India; Delhi
Mugford, Kristin, William Vrattos, and Radhika Kak. "Jaypee Infratech and the Indian Bankruptcy Code." Harvard Business School Case 222-071, February 2022. (Revised May 2022.)
- 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
Keywords: Uncertainty; Policy Uncertainty; Stock Market; Financial Markets; Volatility; Risk and Uncertainty; Policy; Newspapers
Baker, Scott R., Nicholas Bloom, Steven J. Davis, and Marco Sammon. "What Triggers National Stock Market Jumps?" Working Paper, December 2024.
- December 2021
- Case
Should I Stay or Should I Go? Assessing Risk in Carlos Ghosn's International Escape
By: Eugene F. Soltes, Grace Liu and Muneeb Ahmed
In 2018, automotive tycoon Carlos Ghosn was arrested in Japan on financial misreporting charges, followed later by charges of improper payments and misappropriation of funds. Over a year later, still awaiting trial, Ghosn organized his escape from house arrest in Tokyo... View Details
Keywords: Crime and Corruption; Decision Making; Cost vs Benefits; Decision Choices and Conditions; Ethics; Cross-Cultural and Cross-Border Issues; Law; Courts and Trials; Rights; Risk and Uncertainty; Auto Industry; Japan
Soltes, Eugene F., Grace Liu, and Muneeb Ahmed. "Should I Stay or Should I Go? Assessing Risk in Carlos Ghosn's International Escape." Harvard Business School Case 122-051, December 2021.
- 2021
- Working Paper
Limits to Bank Deposit Market Power
By: Juliane Begenau and Erik Stafford
Claims about the market power of bank deposits in the banking literature are numerous and far reaching. Recently, a causal narrative has emerged in the banking literature: market power in bank deposits, measured as imperfect pass-through of short-term market rates on... View Details
Keywords: Bank Deposits; Market Power; Net Interest Margin (NIM); Banks and Banking; Interest Rates; Risk and Uncertainty
Begenau, Juliane, and Erik Stafford. "Limits to Bank Deposit Market Power." Harvard Business School Working Paper, No. 22-039, November 2021.
- Article
Reliable Post hoc Explanations: Modeling Uncertainty in Explainability
By: Dylan Slack, Sophie Hilgard, Sameer Singh and Himabindu Lakkaraju
As black box explanations are increasingly being employed to establish model credibility in high stakes settings, it is important to ensure that these explanations are accurate and reliable. However, prior work demonstrates that explanations generated by... View Details
Keywords: Black Box Explanations; Bayesian Modeling; Decision Making; Risk and Uncertainty; Information Technology
Slack, Dylan, Sophie Hilgard, Sameer Singh, and Himabindu Lakkaraju. "Reliable Post hoc Explanations: Modeling Uncertainty in Explainability." Advances in Neural Information Processing Systems (NeurIPS) 34 (2021).
- 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
Keywords: Trade Policy; Uncertainty; Stock Returns; Risk Premium; Tariff Rates; Portfolio Analysis; Trade; Policy; Risk and Uncertainty; Stocks; Investment Return
Bianconi, Marcelo, Federico Esposito, and Marco Sammon. "Trade Policy Uncertainty and Stock Returns." Art. 102492. Journal of International Money and Finance 119 (December 2021).
- 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
Keywords: Antitrust Issues And Policies; Risk and Uncertainty; Digital Platforms; Competitive Advantage; Governing Rules, Regulations, and Reforms; Innovation and Invention; Information Technology Industry
Farronato, Chiara, and Daniel Björkegren. "To Regulate Network-Based Platforms, Look at Their Data." Harvard Business Review Digital Articles (October 18, 2021).
- October 2021
- Article
Shareholder Activism and Firms' Voluntary Disclosure of Climate Change Risks
By: Caroline Flammer, Michael W. Toffel and Kala Viswanathan
This paper examines whether—in the absence of mandated disclosure requirements—shareholder activism can elicit greater disclosure of firms’ exposure to climate change risks. We find that environmental shareholder activism increases the voluntary disclosure of climate... View Details
Keywords: Transparency; Reporting; Shareholder Engagement; Shareholder Activism; Climate Change; Risk and Uncertainty; Environmental Management; Investment Activism; Corporate Disclosure; Communication Strategy; Information Publishing; Measurement and Metrics; Corporate Social Responsibility and Impact; Problems and Challenges; United States
Flammer, Caroline, Michael W. Toffel, and Kala Viswanathan. "Shareholder Activism and Firms' Voluntary Disclosure of Climate Change Risks." Strategic Management Journal 42, no. 10 (October 2021): 1850–1879. (Featured in Harvard Business Review.)
- August 2021 (Revised November 2024)
- Case
Intenseye: Powering Workplace Health and Safety with AI (A)
By: Michael W. Toffel and Youssef Abdel Aal
Intenseye was a Turkey-based technology startup that deployed machine learning algorithms to workplace camera feeds in order to identify unsafe worker actions and unsafe working conditions, in order to help improve worker safety. The case describes how Intenseye’s... View Details
Keywords: Privacy; Product Development; Operations; Technological Innovation; Value Creation; Production; Distribution; Safety; Risk and Uncertainty; Technology Industry; Manufacturing Industry; Distribution Industry; Turkey; Middle East; United States
Toffel, Michael W., and Youssef Abdel Aal. "Intenseye: Powering Workplace Health and Safety with AI (A)." Harvard Business School Case 622-037, August 2021. (Revised November 2024.)
- August 2021
- Article
Don't Take Their Word for It: The Misclassification of Bond Mutual Funds
By: Huaizhi Chen, Lauren Cohen and Umit Gurun
We provide evidence that bond fund managers misclassify their holdings, and that these misclassifications have a real and significant impact on investor capital flows. In particular, many funds report more investment grade assets than are actually held in their... View Details
Keywords: Mutual Funds; Economics; Finance; Measurement and Metrics; Risk and Uncertainty; Financial Services Industry
Chen, Huaizhi, Lauren Cohen, and Umit Gurun. "Don't Take Their Word for It: The Misclassification of Bond Mutual Funds." Journal of Finance 76, no. 4 (August 2021): 1699–1730. (Winner of the Best Paper Prize at the University of Cambridge Consortium on Asset Management, 2020; Winner of the Financial Management Association Best Paper Prize in Quantitative Investments, 2020.)
- May 2021 (Revised September 2021)
- Case
Accounting for Bitcoin at Tesla
By: Charles C.Y. Wang and Siyu Zhang
On February 8, 2021, Tesla revealed, through its 10-K filing to the Securities and Exchange Commission (SEC), that it had purchased $1.5 billion of Bitcoin, totaling 7.5% of the company’s cash, and that it planned to accept payments in the cryptocurrency soon. These... View Details
Keywords: Bitcoin; Accounting; Currency; Communication Intention and Meaning; Strategy; Investment Portfolio; Emerging Markets; Risk and Uncertainty; Value Creation
Wang, Charles C.Y., and Siyu Zhang. "Accounting for Bitcoin at Tesla." Harvard Business School Case 121-074, May 2021. (Revised September 2021.)