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Show Results For
- All HBS Web
(2,081)
- People (3)
- News (342)
- Research (1,494)
- Events (23)
- Multimedia (1)
- Faculty Publications (740)
- November 2023 (Revised April 2025)
- Case
Norse Atlantic Airways
By: Willy Shih
Bjørn Tore Larsen, Norse Atlantic Airways' founder and CEO, hadn't planned to get into the airline business. But when the COVID-19 pandemic depressed the global demand for air travel and the lease rates for jetliners, he realized if ever he was going to get into the... View Details
Keywords: Business Model; Business Startups; Market Entry and Exit; Leasing; Business Strategy; Segmentation; Interest Rates; Air Transportation Industry; Europe; North America; Norway; United Kingdom; United States
Shih, Willy. "Norse Atlantic Airways." Harvard Business School Case 624-034, November 2023. (Revised April 2025.)
- 15 May 2007
- Working Paper Summaries
I’ll Have the Ice Cream Soon and the Vegetables Later: Decreasing Impatience over Time in Online Grocery Orders
- January 2018
- Supplement
Jumia Nigeria PowerPoint Supplement
Founded in 2012, Jumia Nigeria, a startup effort by Germany-based Rocket Internet, aimed to become an African Amazon. The company entered the nascent market and immediately enjoyed an uptick in consumer spending fueled by the strength of Nigeria’s oil-based economy. By... View Details
- January 2018 (Revised March 2019)
- Teaching Note
Jumia Nigeria: from Retail to Marketplace (A) and (B)
By: Ramon Casadesus-Masanell and Karen Elterman
Founded in 2012, Jumia Nigeria, a startup effort by Germany-based Rocket Internet, aimed to become an African Amazon. The company entered the nascent market and immediately enjoyed an uptick in consumer spending fueled by the strength of Nigeria’s oil-based economy. By... View Details
- 2016
- Working Paper
The Empirical Economics of Online Attention
By: Andre Boik, Shane Greenstein and Jeffrey Prince
In several markets, firms compete not for consumer expenditure but instead for consumer attention. We model and characterize how households allocate their scarce attention in arguably the largest market for attention: the Internet. Our characterization of household... View Details
Keywords: Internet and the Web; Competition; Behavior; Resource Allocation; Household; Cognition and Thinking
Boik, Andre, Shane Greenstein, and Jeffrey Prince. "The Empirical Economics of Online Attention." NBER Working Paper Series, No. 22427, July 2016.
- Research Summary
Bricks and Clicks: The Effect of Store Assortment on E-tail Format (with R. Lal and E. Ofek)
An often neglected aspect in existing studies of the Internet selling process is the high volume of product returns. Such returns reflect a major logistic expenditure on behalf of companies that sell over the net. The problem is reduced when consumers shop in physical... View Details
- Research Summary
Overview
By: Natalia Rigol
My research focuses primarily on how to design, target, and deliver financial products to the poor, and, in particular, how financial inclusion can improve the socio-economic position of women. My projects have analyzed how the design and delivery of microfinance... View Details
- August 2020 (Revised March 2021)
- Case
Migros Turkey: Scaling Online Operations (A)
By: Antonio Moreno and Gamze Yucaoglu
The case opens in November 2019 as Ozgur Tort and Mustafa Bartin, CEO and chief large-format and online retail officer of Migros Ticaret A.S. (Migros), Turkey’s oldest and one of its largest supermarket chains, are contemplating what the best fulfillment format and... View Details
Keywords: Retail; Grocery; Business Model; Emerging Markets; For-Profit Firms; Strategy; Digital Platforms; Information Technology; Technology Adoption; Value Creation; Globalization; Competition; Expansion; Logistics; Profit; Resource Allocation; Corporate Strategy; Turkey
Moreno, Antonio, and Gamze Yucaoglu. "Migros Turkey: Scaling Online Operations (A)." Harvard Business School Case 621-026, August 2020. (Revised March 2021.)
- December 2007 (Revised April 2008)
- Case
Alltech...naturally
By: David E. Bell and Mary L. Shelman
Entrepreneur Pearse Lyons had built Alltech into the fastest growing company in the global animal health industry through innovative technology, creative marketing, and strong branding. Sel-Plex, a proprietary Alltech product, had shown important health benefits for... View Details
Keywords: Brands and Branding; Leadership Development; Customer Focus and Relationships; Expansion; Technological Innovation; Intellectual Property; Sales; Value Creation; Business Model; Growth and Development Strategy; Health Industry
Bell, David E., and Mary L. Shelman. "Alltech...naturally." Harvard Business School Case 508-033, December 2007. (Revised April 2008.)
- August 2007
- Case
Manila Water Company
By: V. Kasturi Rangan, David Wheeler and Jane Comeault
In 1997, the Philippines government privatized its water utility in the metropolitan Manila area. The East Zone concession was won by Manila Water Company and the West Zone concession by Maynilad Water Services. Over the next decade, Manila Water turned in an... View Details
Keywords: Business Model; Framework; Business or Company Management; Bids and Bidding; Privatization; Performance Improvement; Utilities Industry
Rangan, V. Kasturi, David Wheeler, and Jane Comeault. "Manila Water Company." Harvard Business School Case 508-004, August 2007.
- July 2021
- Article
Information Transparency, Multihoming, and Platform Competition: A Natural Experiment in the Daily Deals Market
By: Hui Li and Feng Zhu
Platform competition is shaped by the likelihood of multi-homing (i.e., complementors or consumers adopt more than one platform). To take advantage of multi-homing, platform firms often attempt to motivate their rivals’ high-performing complementors to adopt their own... View Details
Keywords: Platform Competition; Multi-homing; Information Transparency; Daily Deals; Groupon; LivingSocial; Digital Platforms; Information; Competition
Li, Hui, and Feng Zhu. "Information Transparency, Multihoming, and Platform Competition: A Natural Experiment in the Daily Deals Market." Management Science 67, no. 7 (July 2021): 4384–4407.
- 2024
- Working Paper
What Drives Variation in Investor Portfolios? Estimating the Roles of Beliefs and Risk Preferences
By: Mark Egan, Alexander MacKay and Hanbin Yang
We present an empirical model of portfolio choice that allows for the nonparametric estimation of investors' (subjective) expectations and risk preferences. Utilizing a comprehensive dataset of 401(k) plans from 2009 through 2019, we explore heterogeneity in asset... View Details
Keywords: Stock Market Expectations; Demand Estimation; Retirement Planning; Defined Contribution Retirement Plan; 401 (K); Finance; Investment Portfolio; Investment; Retirement; Behavioral Finance; Financial Services Industry; United States
Egan, Mark, Alexander MacKay, and Hanbin Yang. "What Drives Variation in Investor Portfolios? Estimating the Roles of Beliefs and Risk Preferences." Harvard Business School Working Paper, No. 22-044, December 2021. (Revisions Requested at the Review of Financial Studies. Revised April 2024. Direct download. NBER Working Paper Series, No. 29604, December 2021)
- 2015
- Working Paper
Full Substitutability
By: John William Hatfield, Scott Duke Kominers, Alexandru Nichifor, Michael Ostrovsky and Alexander Westkamp
Various forms of substitutability are essential for establishing the existence of
equilibria and other useful properties in diverse settings such as matching, auctions,
and exchange economies with indivisible goods. We extend earlier models' canonical
definitions of... View Details
Hatfield, John William, Scott Duke Kominers, Alexandru Nichifor, Michael Ostrovsky, and Alexander Westkamp. "Full Substitutability." Working Paper, May 2015.
- May–June 2025
- Article
Balancing Digital Safety and Innovation
By: Tomomichi Amano and Tomomi Tanaka
Designers of consumer-facing digital products have tended to focus on novelty and speed (“move fast and break things”). They’ve spent more effort on innovating than on anticipating how customers—and bad actors—might engage with products. But as digital products become... View Details
Amano, Tomomichi, and Tomomi Tanaka. "Balancing Digital Safety and Innovation." Harvard Business Review 103, no. 3 (May–June 2025): 120–127.
- February 2010
- Case
Shurgard Self-Storage: Expansion to Europe (Abridged)
Shurgard, a U.S.-based firm that rents storage facilities to consumers and small businesses, is considering financing options for rapid expansion of its European operations. Five years after entering Europe, Shurgard Europe has opened 17 facilities in Belgium, France,... View Details
Keywords: Business Model; Business Growth and Maturation; Multinational Firms and Management; Logistics; Corporate Entrepreneurship; Trade; Equity; Corporate Finance; United States; Europe
Hamermesh, Richard G. "Shurgard Self-Storage: Expansion to Europe (Abridged)." Harvard Business School Case 810-102, February 2010.
- 20 Mar 2012
- First Look
First Look: March 20
industries. We illustrate our model with examples from the field of consumer sporting goods. The significance of user entrepreneurship and the implications of our model for... View Details
Keywords: Sean Silverthorne
- Article
Soul and Machine (Learning)
By: Davide Proserpio, John R. Hauser, Xiao Liu, Tomomichi Amano, Burnap Alex, Tong Guo, Dokyun (DK) Lee, Randall Lewis, Kanishka Misra, Eric Schwarz, Artem Timoshenko, Lilei Xu and Hema Yoganarasimhan
Machine learning is bringing us self-driving cars, medical diagnoses, and language translation, but how can machine learning help marketers improve marketing decisions? Machine learning models predict extremely well, are scalable to “big data,” and are a natural fit to... View Details
Keywords: Machine Learning; Marketing Applications; Knowledge; Technological Innovation; Core Relationships; Marketing; Applications and Software
Proserpio, Davide, John R. Hauser, Xiao Liu, Tomomichi Amano, Burnap Alex, Tong Guo, Dokyun (DK) Lee, Randall Lewis, Kanishka Misra, Eric Schwarz, Artem Timoshenko, Lilei Xu, and Hema Yoganarasimhan. "Soul and Machine (Learning)." Marketing Letters 31, no. 4 (December 2020): 393–404.
- Forthcoming
- Article
Slowly Varying Regression Under Sparsity
By: Dimitris Bertsimas, Vassilis Digalakis Jr, Michael Lingzhi Li and Omar Skali Lami
We consider the problem of parameter estimation in slowly varying regression models with sparsity constraints. We formulate the problem as a mixed integer optimization problem and demonstrate that it can be reformulated exactly as a binary convex optimization problem... View Details
Bertsimas, Dimitris, Vassilis Digalakis Jr, Michael Lingzhi Li, and Omar Skali Lami. "Slowly Varying Regression Under Sparsity." Operations Research (forthcoming). (Pre-published online March 27, 2024.)
- March 2004 (Revised May 2005)
- Case
Shurgard Self-Storage: Expansion to Europe
By: Richard G. Hamermesh and Indra Reinbergs
Shurgard, a U.S.-based firm that rents storage facilities to consumers and small businesses, is considering financing options for rapid expansion of its European operations. Five years after entering Europe, Shurgard Europe has opened 17 facilities in Belgium, France,... View Details
Keywords: Private Equity; Valuation; Business Model; Governing and Advisory Boards; Entrepreneurship; Cross-Cultural and Cross-Border Issues; Service Industry; Belgium; France; Sweden; United States; Europe
Hamermesh, Richard G., and Indra Reinbergs. "Shurgard Self-Storage: Expansion to Europe." Harvard Business School Case 804-112, March 2004. (Revised May 2005.)
- January 2020
- Article
Using Time-Driven Activity-Based Costing to Demonstrate Value in Perioperative Care: Recommendations and Review from the Society for Perioperative Assessment and Quality Improvement
By: O. Allin, R. D. Urman, A. F. Edwards, J. D. Blitz, K. J. Pfeifer, T. W. Feeley and A. M. Bader
A shift in health care payment models from volume toward value-based incentives will require deliberate input into systems development from both perioperative clinicians and administrators to ensure appropriate recognition of the value of all services... View Details
Keywords: Value-based Health Care; Outcomes; Time-Driven Activity-Based Costing; Health Care and Treatment; Cost Management; Value; Activity Based Costing and Management
Allin, O., R. D. Urman, A. F. Edwards, J. D. Blitz, K. J. Pfeifer, T. W. Feeley, and A. M. Bader. "Using Time-Driven Activity-Based Costing to Demonstrate Value in Perioperative Care: Recommendations and Review from the Society for Perioperative Assessment and Quality Improvement." Journal of Medical Systems 44, no. 1 (January 2020).