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  • July 2025
  • Article

Reputation Burning: Analyzing the Impact of Brand Sponsorship on Social Influencers

By: Mengjie Cheng and Shunyuan Zhang
The growth of the influencer marketing industry warrants an empirical examination of the effect of posting sponsored videos on influencers' reputations. We collected a novel dataset of user-generated YouTube videos created by prominent English-speaking influencers in... View Details
Keywords: Reputation; Mathematical Methods; Marketing Reference Programs; Social Media; Brands and Branding
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Cheng, Mengjie, and Shunyuan Zhang. "Reputation Burning: Analyzing the Impact of Brand Sponsorship on Social Influencers." Management Science 71, no. 7 (July 2025): 5910–5932.
  • 2016
  • Working Paper

Controlling Versus Enabling — Online Appendix

By: Andrei Hagiu and Julian Wright
Section 1 of this online appendix contains the proof of the technical Lemma (Lemma 2) used in the Proof of Lemma 1 in the main paper, which states that Ω* (.) is continuous and differentiable at R*. Section 2 provides the linear example with cost differences between... View Details
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Hagiu, Andrei, and Julian Wright. "Controlling Versus Enabling — Online Appendix." Harvard Business School Working Paper, No. 16-004, July 2015. (Revised July 2016.)
  • Article

Behavioral Hazard in Health Insurance

By: Katherine Baicker, Sendhil Mullainathan and Joshua Schwartzstein
A fundamental implication of standard moral hazard models is overuse of low-value medical care because copays are lower than costs. In these models, the demand curve alone can be used to make welfare statements, a fact relied on by much empirical work. There is ample... View Details
Keywords: Insurance; Consumer Behavior; Health Care and Treatment; Insurance Industry
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Baicker, Katherine, Sendhil Mullainathan, and Joshua Schwartzstein. "Behavioral Hazard in Health Insurance." Quarterly Journal of Economics 130, no. 4 (November 2015): 1623–1667. (Online Appendix.)
  • April 2001 (Revised February 2002)
  • Case

Level (3) Communications in 2001: The 'Pivotal Year'

Level (3) is one of the most distinctive of the new "fiber backbone" start-ups in the year 2001. Unlike its competitors, Level (3) has built its fiber network--and organization--in such a way that it should be able to utilize future generations of technologically... View Details
Keywords: Communication Technology; Risk Management; Industry Growth; Competitive Advantage; Telecommunications Industry; United States
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Silverman, Brian S., and Briana Huntsberger. "Level (3) Communications in 2001: The 'Pivotal Year'." Harvard Business School Case 701-059, April 2001. (Revised February 2002.)
  • 27 Dec 2014
  • Working Paper Summaries

How Should We Pay for Health Care?

Keywords: by Michael E. Porter & Robert S. Kaplan; Health
  • Research Summary

When Does IT Foster Markets, When Does it Foster Hierarchies?

The 'Electronic Markets Hypothesis' is, at present, essentially taken for granted. It holds that greater use of IT leads to greater use of market mechanisms for coordinating activity, basically because of IT's ability to reduce the costs of coordination.

The... View Details

  • November 2018
  • Case

Goldman Sachs: The 10,000 Small Businesses Program

By: Leonard A. Schlesinger and Aldo Sesia
In 2008, Goldman Sachs started the 10,000 Small Businesses program to help small businesses in the United States by providing education and a network of support—at no cost —and access to capital. It required the firm to create a new business ecosystem with a wide... View Details
Keywords: Ecosystem; Public/private Partnership; Small Business; Programs; Education; Partners and Partnerships; Philanthropy and Charitable Giving; United States
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Schlesinger, Leonard A., and Aldo Sesia. "Goldman Sachs: The 10,000 Small Businesses Program." Harvard Business School Case 319-005, November 2018.
  • December 2008
  • Case

Merrimack Tractors and Mowers: LIFO or FIFO?

By: William J. Bruns Jr., Sharon Bruns and Susan S. Hameling
At Merrimack Tractors and Mowers in 2008, product manufacturing costs are increasing faster than competitors' costs, and as a result earnings are likely to fall below those reported in 2007. The company president and the company controller have discussed this problem,... View Details
Keywords: International; Financial; Reporting; Standards; Inventory; Business Ethics; Assets; Valuation; Ethics; Taxation; Financial Reporting; Manufacturing Industry
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Bruns, William J., Jr., Sharon Bruns, and Susan S. Hameling. "Merrimack Tractors and Mowers: LIFO or FIFO?" Harvard Business School Brief Case 083-217, December 2008.
  • October 2008 (Revised November 2010)
  • Case

NEC Electronics

By: C. Fritz Foley, Robin Greenwood and James Quinn
Why do shares in NEC Electronics, a publicly listed subsidiary of Japan conglomerate NEC, trade at a discount to their fundamental value? Can Perry Capital, a U.S. hedge fund, restructure this subsidiary and generate significant returns? This case provides students... View Details
Keywords: Restructuring; Private Equity; Investment Return; Ownership Stake; Business and Shareholder Relations; Financial Services Industry; Japan
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Foley, C. Fritz, Robin Greenwood, and James Quinn. "NEC Electronics." Harvard Business School Case 209-001, October 2008. (Revised November 2010.)
  • September 2021
  • Article

Did Technology Contribute to the Housing Boom? Evidence from MERS

By: Stefan Lewellen and Emily Williams
We examine the effects of the Mortgage Electronic Registration System, or MERS, on mortgage origination volumes and foreclosure rates prior to the Great Recession. MERS was introduced in the late 1990s and significantly reduced the cost and time associated with... View Details
Keywords: Credit Supply; Housing Boom; Financial Innovation; Nonbank Lenders; Mortgages; Credit; Expansion; Information Technology; Outcome or Result
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Lewellen, Stefan, and Emily Williams. "Did Technology Contribute to the Housing Boom? Evidence from MERS." Journal of Financial Economics 141, no. 3 (September 2021): 1244–1261.
  • November–December 2019
  • Article

Making Sense of Soft Information: Interpretation Bias and Loan Quality

By: Dennis Campbell, Maria Loumioti and Regina Wittenberg Moerman
We explore whether behavioral biases impede the effective processing and interpretation of soft information in private lending. Taking advantage of the internal reporting system of a large federal credit union, we delineate three important biases likely to affect the... View Details
Keywords: Soft Information; Lending; Banking; Information; Financing and Loans; Banks and Banking; Decision Making
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Campbell, Dennis, Maria Loumioti, and Regina Wittenberg Moerman. "Making Sense of Soft Information: Interpretation Bias and Loan Quality." Art. 101240. Journal of Accounting & Economics 68, nos. 2-3 (November–December 2019).
  • 2023
  • Working Paper

The Market for Sharing Interest Rate Risk: Quantities and Asset Prices

By: Ishita Sen, Umang Khetan, Jane Li and Ioana Neamtu
We study the extent of interest rate risk sharing across the financial system using granular positions and transactions data in interest rate swaps. We show that pension and insurance (PF&I) sector emerges as a natural counterparty to banks and corporations: overall,... View Details
Keywords: Interest Rates; Investment Funds; Banks and Banking; Insurance; Investment Banking; Risk and Uncertainty
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Sen, Ishita, Umang Khetan, Jane Li, and Ioana Neamtu. "The Market for Sharing Interest Rate Risk: Quantities and Asset Prices." Harvard Business School Working Paper, No. 24-052, February 2024.
  • September 2022
  • Background Note

On CUE: The Quest for Optimal Customer Unit Economics

By: Elie Ofek, Barak Libai and Eitan Muller
Startups are often evaluated by how well they perform on unit economics, defined as the ratio of a customer’s lifetime value (LTV) to acquisition costs (CAC). A common target for unit economics, advocated by many VCs and analysts, is 3:1 (i.e., LTV/CAC=3). While there... View Details
Keywords: Unit Economics; Business Startups; Performance Evaluation; Customer Value and Value Chain; Customer Relationship Management; Analysis
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Ofek, Elie, Barak Libai, and Eitan Muller. "On CUE: The Quest for Optimal Customer Unit Economics." Harvard Business School Background Note 523-050, September 2022.
  • 12 Feb 2009
  • Working Paper Summaries

Platform Competition, Compatibility, and Social Efficiency

Keywords: by Ramon Casadesus-Masanell & Francisco Ruiz-Aliseda; Computer
  • Fall 2018
  • Article

The Value of Fit Information in Online Retail: Evidence from a Randomized Field Experiment

By: Santiago Gallino and Antonio Moreno
Online channels generate frictions when selling products with nondigital attributes, such as apparel. Customers may be reluctant to purchase products they have not been able to try on, and those customers who do purchase may return products when they do not fit as... View Details
Keywords: Supply Chain Information; Fit Uncertainty; Online Retail; Randomized Field Experiment; Virtual Fitting Room; Digital Retail; Customization and Personalization; Internet and the Web; Value; Performance Improvement; Apparel and Accessories Industry; Retail Industry
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Gallino, Santiago, and Antonio Moreno. "The Value of Fit Information in Online Retail: Evidence from a Randomized Field Experiment." Manufacturing & Service Operations Management 20, no. 4 (Fall 2018): 767–787.
  • August 1993 (Revised April 1997)
  • Case

Southwest Airlines: 1993 (A)

By: James L. Heskett and Roger H. Hallowell
Southwest Airlines, the only major U.S. airline to be profitable in 1992, makes a decision as to which of two new cities to open, or to add a new long-haul route. Provides windows into Southwest's strategy, operations, marketing, and culture. View Details
Keywords: Decisions; Cost Management; Profit; Marketing; Service Operations; Organizational Culture; Corporate Strategy; Expansion; Air Transportation Industry; United States
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Heskett, James L., and Roger H. Hallowell. "Southwest Airlines: 1993 (A)." Harvard Business School Case 694-023, August 1993. (Revised April 1997.)
  • 09 Mar 2010
  • First Look

First Look: March 9

massive cost overruns and delays. Second, the United States captured most of these economic benefits, partially because of its geographical situation and partially because it could leverage its military might to obtain a better agreement... View Details
Keywords: Martha Lagace
  • March 2024 (Revised November 2024)
  • Case

Kawasaki Heavy Industries Bets on Clean Hydrogen

By: Gunnar Trumbull, Nobuo Sato and Akiko Kanno
Kawasaki Heavy Industries (KHI), an engineering manufacturer headquartered in Japan, was aiming to scale up its hydrogen production and establish a global hydrogen supply chain. The initiative was in line with Japan's energy strategy, as the country seeks to transition... View Details
Keywords: Renewable Energy; Demand and Consumers; Competition; Growth and Development Strategy; Infrastructure; Supply Chain; Manufacturing Industry; Energy Industry
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Trumbull, Gunnar, Nobuo Sato, and Akiko Kanno. "Kawasaki Heavy Industries Bets on Clean Hydrogen." Harvard Business School Case 724-035, March 2024. (Revised November 2024.)
  • January 2015
  • Article

Marketplace or Reseller?

By: Andrei Hagiu and Julian Wright
Intermediaries can choose between functioning as a marketplace (on which suppliers sell their products directly to buyers) or as a reseller (purchasing products from suppliers and selling them to buyers). We model this as a decision between whether control rights over... View Details
Keywords: Intermediation; Multi-sided Platforms; Control Rights; Marketing
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Hagiu, Andrei, and Julian Wright. "Marketplace or Reseller?" Management Science 61, no. 1 (January 2015): 184–203.
  • December 2012
  • Case

Delwarca Software Remote Support Unit

By: Roy D. Shapiro and Paul E. Morrison
Delwarca Software provides business software to large corporate clients around the world. The firm serves customers who prefer to assemble corporate solutions using a combination of software programs from various suppliers rather than implementing a single enterprise... View Details
Keywords: Service Operations; Service Delivery; Mathematical Methods; Applications and Software; Problems and Challenges; Customer Satisfaction; Information Technology Industry
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Shapiro, Roy D., and Paul E. Morrison. "Delwarca Software Remote Support Unit." Harvard Business School Brief Case 913-541, December 2012.
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