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- All HBS Web
(1,826)
- Faculty Publications (800)
- 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).
- December 2022
- Article
Divergence Between Employer and Employee Understandings of Passion: Theory and Implications for Future Research
By: Jon M. Jachimowicz and Hannah Weisman
There is an increasingly prevalent expectation in contemporary society that employees be passionate for their work. Here, we suggest that employers and employees can have different understandings of passion that potentially conflict. More specifically, we argue that... View Details
Keywords: Employee Relationship Management; Human Capital; Performance Effectiveness; Management Style
Jachimowicz, Jon M., and Hannah Weisman. "Divergence Between Employer and Employee Understandings of Passion: Theory and Implications for Future Research." Research in Organizational Behavior 42 (December 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).
- March 2022
- Article
Where to Locate COVID-19 Mass Vaccination Facilities?
By: Dimitris Bertsimas, Vassilis Digalakis Jr, Alexander Jacquillat, Michael Lingzhi Li and Alessandro Previero
The outbreak of COVID-19 led to a record-breaking race to develop a vaccine. However, the limited vaccine capacity creates another massive challenge: how to distribute vaccines to mitigate the near-end impact of the pandemic? In the United States in particular, the new... View Details
Keywords: Vaccines; COVID-19; Health Care and Treatment; Health Pandemics; Performance Effectiveness; Analytics and Data Science; Mathematical Methods
Bertsimas, Dimitris, Vassilis Digalakis Jr, Alexander Jacquillat, Michael Lingzhi Li, and Alessandro Previero. "Where to Locate COVID-19 Mass Vaccination Facilities?" Naval Research Logistics Quarterly 69, no. 2 (March 2022): 179–200.
- 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.)
- 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
Keywords: Investing; Transportation; Strategy; Project Finance; Agribusiness; Construction; Infrastructure; Governing Rules, Regulations, and Reforms; Agriculture and Agribusiness Industry; Nigeria; Africa
Macomber, John D., Pippa Tubman Armerding, and Wale Lawal. "BUA Group." Harvard Business School Case 222-062, February 2022. (Revised April 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.
- December 2021
- Article
Auctioneers Sometimes Prefer Entry Fees to Extra Bidders
By: Jiafeng Chen and Scott Duke Kominers
We investigate a market thickness–market power tradeoff in an auction setting with endogenous entry. We find that charging admission fees can sometimes dominate the benefit of recruiting additional bidders, even though the fees themselves implicitly reduce competition... View Details
Chen, Jiafeng, and Scott Duke Kominers. "Auctioneers Sometimes Prefer Entry Fees to Extra Bidders." Art. 102737. International Journal of Industrial Organization 79 (December 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).
- Article
Complementarity between Audited Financial Reporting and Voluntary Disclosure: The Case of Former Andersen Clients
By: Richard Frankel, Alon Kalay, Gil Sadka and Yuan Zou
Prior literature presents various perspectives on the role of financial reporting. One view is that mandatory periodic reporting disciplines managers and encourages timely voluntary disclosure. We examine this "confirmation hypothesis" using the shock to financial... View Details
Keywords: Financial Disclosure; Mandatory Reporting; Reliability; Voluntary Disclosure; Financial Reporting; Quality; Corporate Disclosure
Frankel, Richard, Alon Kalay, Gil Sadka, and Yuan Zou. "Complementarity between Audited Financial Reporting and Voluntary Disclosure: The Case of Former Andersen Clients." Accounting Review 96, no. 6 (November 2021): 215–238.