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- December 2021
- Article
Partisan Professionals: Evidence from Credit Rating Analysts
By: Elisabeth Kempf and Margarita Tsoutsoura
Partisan perception affects the actions of professionals in the financial sector. Using a novel dataset linking credit rating analysts to party affiliations from voter records, we show that analysts who are not affiliated with the U.S. president’s party downward-adjust... View Details
Keywords: Political Affiliation; Credit Rating Agencies; Political Partisanship; Political Elections; Perception; Credit
Kempf, Elisabeth, and Margarita Tsoutsoura. "Partisan Professionals: Evidence from Credit Rating Analysts." Journal of Finance 76, no. 6 (December 2021): 2805–2856.
- November 2021
- Article
Panel Experiments and Dynamic Causal Effects: A Finite Population Perspective
By: Iavor Bojinov, Ashesh Rambachan and Neil Shephard
In panel experiments, we randomly assign units to different interventions, measuring their outcomes, and repeating the procedure in several periods. Using the potential outcomes framework, we define finite population dynamic causal effects that capture the relative... View Details
Keywords: Panel Data; Dynamic Causal Effects; Potential Outcomes; Finite Population; Nonparametric; Mathematical Methods
Bojinov, Iavor, Ashesh Rambachan, and Neil Shephard. "Panel Experiments and Dynamic Causal Effects: A Finite Population Perspective." Quantitative Economics 12, no. 4 (November 2021): 1171–1196.
- 2025
- Working Paper
How Do Households Suppress the Price of Tail Risk?
By: Laurent Calvet, Claire Célérier, Gordon Liao and Boris Vallée
This paper investigates the effects of the issuance of retail products with non-linear payoffs on option prices. For a given underlying asset, when the outstanding volume of products embedding a short-put position increases, implied volatility at the corresponding... View Details
Keywords: Security Design; Dividend; Options; Structured Products; Market Segmentation; Financial Instruments; Design; Volatility; Markets; Segmentation
Calvet, Laurent, Claire Célérier, Gordon Liao, and Boris Vallée. "How Do Households Suppress the Price of Tail Risk?" Working Paper, 2025.
- June 2021
- Article
Deals in the Time of Pandemic
By: Guhan Subramanian and Caley Petrucci
The COVID-19 pandemic has brought new attention to the period between signing and closing in M&A transactions. Transactional planners heavily negotiate the provisions that govern the behavior of the parties during this window, not only to allocate risk between the... View Details
Subramanian, Guhan, and Caley Petrucci. "Deals in the Time of Pandemic." Columbia Law Review 121, no. 5 (June 2021): 1405–1480.
- Spring 2021
- Article
Corporate Resilience and Response During COVID-19
By: Alex Cheema-Fox, Bridget LaPerla, George Serafeim and Hui (Stacie) Wang
The coronavirus pandemic caused a sharp market decline while raising heterogeneous responses across companies related to their employees, supply chain, and repurposing of operations to provide needed products and services. We study whether during the 2020 COVID-19... View Details
Keywords: ESG; COVID-19; Coronavirus; Crisis Response Plans; Crisis; ESG (Environmental, Social, Governance) Performance; ESG Ratings; Leadership & Corporate Accountability; Big Data; Machine Learning; Investor Behavior; Institutional Investors; Corporate Performance; Health Pandemics; Crisis Management; Corporate Social Responsibility and Impact; Human Capital; Supply Chain; Operations; Leadership; Corporate Accountability; Institutional Investing; Performance
Cheema-Fox, Alex, Bridget LaPerla, George Serafeim, and Hui (Stacie) Wang. "Corporate Resilience and Response During COVID-19." Journal of Applied Corporate Finance 33, no. 2 (Spring 2021): 24–40.
- 2024
- Working Paper
Public Debt and Investment Under Political Competition: Evidence from Toxic Loans
By: Julien Sauvagnat and Boris Vallée
We examine how political considerations shape local government responses to a substantial rise in indebtedness. We use the delayed yet sharp deterioration of “toxic” loans held by French municipalities as a quasi-natural experiment to empirically investigate such... View Details
Keywords: Public Debt; Public Investments; Political Contestation; Toxic Loans; Borrowing and Debt; Investment; Public Sector; Government and Politics; Local Range; Financing and Loans
Sauvagnat, Julien, and Boris Vallée. "Public Debt and Investment Under Political Competition: Evidence from Toxic Loans." Working Paper, 2024.
- 2021
- Working Paper
No-fault Default, Chapter 11 Bankruptcy, and Financial Institutions
By: Robert C. Merton and Richard T. Thakor
This paper analyzes the costs and benefits of a no-fault-default debt structure as an alternative to the typical bankruptcy process. We show that the deadweight costs of bankruptcy can be avoided or substantially reduced through no-fault-default debt, which permits a... View Details
Keywords: No-fault Default; Chapter 11; Insolvency and Bankruptcy; Borrowing and Debt; Governing Rules, Regulations, and Reforms; Financial Institutions; Contracts
Merton, Robert C., and Richard T. Thakor. "No-fault Default, Chapter 11 Bankruptcy, and Financial Institutions." NBER Working Paper Series, No. 28341, January 2021.
- 2024
- Working Paper
Racial Discrimination and the Social Contract: Evidence from U.S. Army Enlistment During WWII
By: Nancy Qian and Marco Tabellini
This paper documents that the Pearl Harbor attack triggered a sharp increase in volunteer enlistment rates of American men, the magnitude of the increase was smaller for Black men than for white men and the Black-white gap was larger in counties with higher levels of... View Details
Keywords: State Capacity; Institutions; War; Race; Prejudice and Bias; Government Administration; United States
Qian, Nancy, and Marco Tabellini. "Racial Discrimination and the Social Contract: Evidence from U.S. Army Enlistment During WWII." Harvard Business School Working Paper, No. 21-005, July 2020. (Revised December 2024. Conditionally accepted at the Review of Economic Studies. Available also from KelloggInsight, HBS Working Knowledge, and NBER.)
- 2021
- Working Paper
Elusive Safety: The New Geography of Capital Flows and Risk
By: Laura Alfaro, Ester Faia, Ruth Judson and Tim Schmidt-Eisenlohr
A confidential dataset with industry-level disaggregation of U.S. cross-border claims and liabilities, shows U.S. securities to be increasingly intermediated by tax-haven-financial-centers (THFC) and less regulated funds. These securities are risky, in... View Details
Keywords: Tax Havens; Financial Centers; Geography Of Flows; Profit Shifting; Tax Avoidance; Risk; Safe Assets; Hetergeneous Firms; Endogenous Entry; Endogenous Monitoring; Regulatory Arbitrage; Assets; Safety; Risk and Uncertainty; Capital; Global Range
Alfaro, Laura, Ester Faia, Ruth Judson, and Tim Schmidt-Eisenlohr. "Elusive Safety: The New Geography of Capital Flows and Risk." Harvard Business School Working Paper, No. 20-099, March 2020. (Revised February 2021.)
- March 2020 (Revised February 2023)
- Case
Performance Management at Afreximbank (A)
By: Robert S. Kaplan, Siko Sikochi and Josh Steimle
Based in Cairo, Afreximbank was founded in October 1993 as a specialized continental financial institution designed to address the low level of intra-African trade, the decline in financial flows to Africa, the worsening external debt situation of many African... View Details
Keywords: Performance Management; Balanced Scorecard; Performance Expectations; Performance Evaluation; Performance Improvement; Organizational Culture; Strategy; Banking Industry; Africa; Egypt
Kaplan, Robert S., Siko Sikochi, and Josh Steimle. "Performance Management at Afreximbank (A)." Harvard Business School Case 120-029, March 2020. (Revised February 2023.)
- February 2019 (Revised March 2022)
- Case
Mexico: Shifting Left with AMLO
Andrés Manuel López Obrador became president of Mexico on December 1, 2018. His election, and the victory of his new Party, MORENA, represent a sharp shift to the left by Mexico’s political system. Previously, President Peña Nieto and his party, the PRI, had initiated... View Details
Keywords: Political Economy; Pacto; Institutional Reform; Nationalism; Energy Reform; Government and Politics; Governing Rules, Regulations, and Reforms; Economic Growth; International Relations; Mexico
Vietor, Richard H.K. "Mexico: Shifting Left with AMLO." Harvard Business School Case 719-051, February 2019. (Revised March 2022.)
- January 2019
- Article
Bubbles for Fama
By: Robin Greenwood, Andrei Shleifer and Yang You
We evaluate Eugene Fama's claim that stock prices do not exhibit price bubbles. Based on U.S. industry returns 1926–2014 and international sector returns 1985–2014, we present four findings: (1) Fama is correct in that a sharp price increase of an industry portfolio... View Details
Keywords: Bubble; Market Efficiency; Predictability; Price Bubble; Stocks; Price; Forecasting and Prediction
Greenwood, Robin, Andrei Shleifer, and Yang You. "Bubbles for Fama." Journal of Financial Economics 131, no. 1 (January 2019): 20–43. (Internet Appendix Here.)
- December 2018 (Revised August 2019)
- Case
Super Bowl Storytelling
By: Shelle Santana and Jill Avery
The one day a year when consumers not only tolerate but actually eagerly anticipate ads is during the NFL's Super Bowl. In sharp contrast to their behavior on the other 364 days of the year, consumers watch an average of 89 commercials per Super Bowl game for an... View Details
Keywords: Television Advertising; Entertainment; Brand Management; Marketing; Marketing Strategy; Marketing Communications; Advertising; Television Entertainment; Brands and Branding; Media; Cost vs Benefits; Advertising Industry; Media and Broadcasting Industry; Sports Industry; United States; North America
Santana, Shelle, and Jill Avery. "Super Bowl Storytelling." Harvard Business School Case 519-041, December 2018. (Revised August 2019.)
- 2018
- Working Paper
Detecting Anomalies: The Relevance and Power of Standard Asset Pricing Tests
By: Malcolm Baker, Patrick Luo and Ryan Taliaferro
The two standard approaches for identifying capital market anomalies are cross-sectional coefficient tests, in the spirit of Fama and MacBeth (1973), and time-series intercept tests, in the spirit of Jensen (1968). A new signal can pass the first test, which we label a... View Details
Keywords: Investment Management; Anomalies; Portfolio Construction; Transaction Costs; Investment; Management; Asset Pricing; Market Transactions; Cost
Baker, Malcolm, Patrick Luo, and Ryan Taliaferro. "Detecting Anomalies: The Relevance and Power of Standard Asset Pricing Tests." Working Paper, July 2018.
- June 2018 (Revised July 2023)
- Case
John Chambers, Cisco, and China: Upgrading a Golden Shield
By: Geoffrey Jones and Emily Grandjean
This case examines the role of Cisco led by John Chambers in facilitating web filtering in China. It begins by tracing the origins of Cisco as a pioneer of networking equipment. John Chambers, who had worked as a sales manager at IBM and Wang Laboratories, joined Cisco... View Details
Keywords: Cisco; Internet and the Web; Governance Controls; Ethics; Rights; Corporate Social Responsibility and Impact; Technology Industry; China
Jones, Geoffrey, and Emily Grandjean. "John Chambers, Cisco, and China: Upgrading a Golden Shield." Harvard Business School Case 318-158, June 2018. (Revised July 2023.)
- 2018
- Chapter
How Geography Shapes—and Is Shaped by—the Internet
By: Shane Greenstein, Avi Goldfarb and Chris Forman
Book Abstract: The first 15 years of the 21st century have thrown into sharp relief the challenges of growth, equity, stability, and sustainability facing the world economy. In addition, they have exposed the inadequacies of mainstream economics in providing answers to... View Details
Greenstein, Shane, Avi Goldfarb, and Chris Forman. "How Geography Shapes—and Is Shaped by—the Internet." In The New Oxford Handbook of Economic Geography, edited by Gordon Clark, Maryann Feldman, Meric Gertler, and Dariusz Wojcik, 269–285. Oxford: Oxford University Press, 2018.
- 2018
- Chapter
The United States in Contemporary Perspectives: Evolving Forms, Strategy, and Performance
By: David J. Collis, Bharat Anand and J. Yo-Jud Cheng
BOOK ABSTRACT: In spite of surging interest in the business group organization among business scholars, economists, and historians in recent years, academic research on business groups has, to date, remained within the boundary of emerging markets. The major aim of... View Details
Collis, David J., Bharat Anand, and J. Yo-Jud Cheng. "The United States in Contemporary Perspectives: Evolving Forms, Strategy, and Performance." Chap. 15 in Business Groups in the West: Origins, Evolution, and Resilience, edited by Asli M. Colpan and Takashi Hikino. New York: Oxford University Press, 2018.
- October 2017 (Revised April 2024)
- Case
Snap Inc. Goes Public (A)
By: Lynn Sharp Paine and Will Hurwitz
Snap Inc.’s chairman must decide how to address investor concerns about the company’s unprecedented plans to issue only non-voting shares in its upcoming IPO. The case is set in early 2017 following the public availability of Snap’s IPO filing with the U.S. Securities... View Details
Keywords: Ethics; Capital Structure; Corporate Accountability; Governing and Advisory Boards; Corporate Governance; Going Public; Business and Shareholder Relations; Leadership; Management; Mobile and Wireless Technology; Venture Capital; Technology Industry; Telecommunications Industry; Information Technology Industry; United States; California
Paine, Lynn Sharp, and Will Hurwitz. "Snap Inc. Goes Public (A)." Harvard Business School Case 318-042, October 2017. (Revised April 2024.)
- October 2017
- Supplement
Snap Inc. Goes Public (B)
By: Lynn Sharp Paine and Will Hurwitz
Supplements the (A) case.
Snap Inc.’s chairman must decide how to address investor concerns about the company’s unprecedented plans to issue only non-voting shares in its upcoming IPO. View Details
Snap Inc.’s chairman must decide how to address investor concerns about the company’s unprecedented plans to issue only non-voting shares in its upcoming IPO. View Details
Keywords: Ethics; Capital Structure; Corporate Accountability; Governing and Advisory Boards; Corporate Governance; Going Public; Business and Shareholder Relations; Leadership; Management; Mobile and Wireless Technology; Venture Capital; Technology Industry; Telecommunications Industry; Information Technology Industry; United States; California
Paine, Lynn Sharp, and Will Hurwitz. "Snap Inc. Goes Public (B)." Harvard Business School Supplement 318-049, October 2017.
- May 2017
- Article
The Reference Wars: Encyclopædia Britannica's Decline and Encarta's Emergence
By: Shane Greenstein
The experience of Encyclopædia Britannica provides the canonical example of the decline of an established firm at the outset of the digital age. Competition from Microsoft’s Encarta in 1993 led to sharp declines in the sales of books, which led to the distressed sale... View Details
Keywords: Digital; Britannica; Diseconomies; Encyclopedias; Applications and Software; Books; Competition; Publishing Industry
Greenstein, Shane. "The Reference Wars: Encyclopædia Britannica's Decline and Encarta's Emergence." Strategic Management Journal 38, no. 5 (May 2017): 995–1017.