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- All HBS Web (752)
- Faculty Publications (341)
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- 2011
- Working Paper
The Flexible Substitution Logit: Uncovering Category Expansion and Share Impacts of Marketing Instruments
By: Qiang Liu, Thomas J. Steenburgh and Sachin Gupta
Different instruments are relevant for different marketing objectives (category demand expansion or market share stealing). To help brand managers make informed marketing mix decisions, it is essential that marketing mix models appropriately measure the different... View Details
Keywords: Decision Choices and Conditions; Forecasting and Prediction; Investment; Brands and Branding; Marketing Strategy; Demand and Consumers; Mathematical Methods
Liu, Qiang, Thomas J. Steenburgh, and Sachin Gupta. "The Flexible Substitution Logit: Uncovering Category Expansion and Share Impacts of Marketing Instruments." Harvard Business School Working Paper, No. 12-012, September 2011.
- 17 Mar 2009
- First Look
First Look: March 17, 2009
base of PC operating systems, it had captured 20% of the server market by the end of 2005 and was quickly becoming a formidable alternative for productivity programs with OpenOffice. Linux's "business model" to compete against... View Details
Keywords: Martha Lagace
- May 2020
- Article
Negotiating a Better Future: How Interpersonal Skills Facilitate Inter-Generational Investment
By: Nava Ashraf, Natalie Bau, Corinne Low and Kathleen McGinn
Using a randomized control trial, we examine whether offering adolescent girls nonmaterial resources—specifically, negotiation skills—can improve educational outcomes in a low-income country. In so doing, we provide the first evidence on the effects of an intervention... View Details
Keywords: Negotiation; Competency and Skills; Training; Age; Gender; Education; Investment; Outcome or Result; Developing Countries and Economies
Ashraf, Nava, Natalie Bau, Corinne Low, and Kathleen McGinn. "Negotiating a Better Future: How Interpersonal Skills Facilitate Inter-Generational Investment." Quarterly Journal of Economics 135, no. 2 (May 2020): 1095–1151.
- May 2025
- Case
Windsurf and the AI Code Assistant Market
By: Suraj Srinivasan, Sudhanshu Nath Mishra and Radhika Kak
In April 2025, the founding team of Windsurf, an AI start-up specializing in code generation gathered in Mountain View, California, to assess its remarkable year of growth. The company had scaled from a niche GitHub Copilot alternative to a breakout player with over... View Details
Keywords: AI and Machine Learning; Venture Capital; Innovation Leadership; Technological Innovation; Business Growth and Maturation; Competition; Business Strategy; Technology Industry; United States
Srinivasan, Suraj, Sudhanshu Nath Mishra, and Radhika Kak. "Windsurf and the AI Code Assistant Market." Harvard Business School Case 125-111, May 2025.
- 07 Apr 2023
- Research & Ideas
When Celebrity ‘Crypto-Influencers’ Rake in Cash, Investors Lose Big
results don’t offer a smoking gun. Enthusiasm is inherent in the decentralized finance culture, where eager investors generally expect that market values will soar. “There's a belief that because crypto is trying to democratize investment... View Details
Keywords: by Kristen Senz
- Article
Peer-to-Peer File Sharing and the Market for Digital Information Goods
By: Ramon Casadesus-Masanell and Andres Hervas-Drane
We study competitive interaction between two alternative models of digital content distribution over the Internet: peer-to-peer (p2p) file sharing and centralized client-server distribution. We present microfoundations for a stylized model of p2p file sharing where all... View Details
Keywords: Competition; Distribution; Internet and the Web; Information Infrastructure; Management Analysis, Tools, and Techniques; Strategy; Profit; Price; Performance Efficiency
Casadesus-Masanell, Ramon, and Andres Hervas-Drane. "Peer-to-Peer File Sharing and the Market for Digital Information Goods." Journal of Economics & Management Strategy 19, no. 2 (Summer 2010): 333–373.
- 2007
- Book
An Experiment in Fair Value Accounting? The State of the Art in Research and Thought Leadership on Accounting for Life Assurance in the UK and Continental Europe
By: Joanne G Horton, Richard H. Macve and George Serafeim
"Fair value" is currently the central topic of debate in the development of accounting standards. While it has now been defined to mean an exit price in US GAAP, the IASB is still considering its own definition, and some commentators are arguing for versions of entry... View Details
Keywords: Transition; Financial Instruments; Framework; Market Entry and Exit; Insurance; Revenue Recognition; Fair Value Accounting; Standards; United Kingdom
Horton, Joanne G., Richard H. Macve, and George Serafeim. An Experiment in Fair Value Accounting? The State of the Art in Research and Thought Leadership on Accounting for Life Assurance in the UK and Continental Europe. London, UK: Institute of Chartered Accountants in England and Wales, Centre for Business Performance, 2007.
- March 2014
- Article
Cyclicality of Credit Supply: Firm Level Evidence
By: Bo Becker and Victoria Ivashina
Theory predicts that there is a close link between bank credit supply and the evolution of the business cycle. Yet fluctuations in bank-loan supply have been hard to quantify in the time series. While loan issuance falls in recessions, it is not clear if this is due to... View Details
Keywords: Business Cycles; Borrowing and Debt; Credit; Banks and Banking; Bonds; Financial Markets; Financing and Loans; Banking Industry
Becker, Bo, and Victoria Ivashina. "Cyclicality of Credit Supply: Firm Level Evidence." Journal of Monetary Economics 62 (March 2014): 76–93.
- June 2010 (Revised August 2021)
- Case
Vereinigung Hamburger Schiffsmakler und Schiffsagenten e.V. (VHSS): Valuing Ships
By: Benjamin C. Esty and Albert Sheen
After booming for more than five years, the global shipping (maritime) industry experienced a dramatic crash in late 2008 as the global financial system froze and the global economy slid into recession. Ship charter rates (revenue) fell by as much as 90% causing prices... View Details
Keywords: Fair Value Accounting; Financial Crisis; Capital Markets; Financial Liquidity; International Finance; Globalized Markets and Industries; Valuation; Banking Industry; Shipping Industry; Germany
Esty, Benjamin C., and Albert Sheen. "Vereinigung Hamburger Schiffsmakler und Schiffsagenten e.V. (VHSS): Valuing Ships." Harvard Business School Case 210-058, June 2010. (Revised August 2021.)
- 2022
- Working Paper
Retail Investors’ Contrarian Behavior Around News, Attention, and the Momentum Effect
By: Cheng (Patrick) Luo, Enrichetta Ravina, Marco Sammon and Luis M. Viceira
Using a large panel of U.S. brokerage accounts trades and positions, we show that a large fraction of retail investors trade as contrarians after large earnings surprises, especially for loser stocks, and that such contrarian trading contributes to post earnings... View Details
Keywords: Retail Investors; Post Earnings Announcement Drift; Price Momentum; Behavioral Finance; Investment; Demographics
Luo, Cheng (Patrick), Enrichetta Ravina, Marco Sammon, and Luis M. Viceira. "Retail Investors’ Contrarian Behavior Around News, Attention, and the Momentum Effect." Working Paper, June 2022.
- February 2022 (Revised November 2022)
- Case
Fondeadora
By: Álvaro Rodríguez Arregui and Mitchell Weiss
Norman Müller and René Serrano, cofounders of Fondeadora, a Mexican “neobank,” had lined up a $12.5 million in Series A funding round in 2020 only to run into a major obstacle: The lead investor was Gradient Ventures, a venture firm launched by Alphabet, Inc., and... View Details
Keywords: Fundraising; Entrepreneurship; Venture Capital; Financial Institutions; Business Startups; Government Legislation; Governing Rules, Regulations, and Reforms; Financial Strategy; Financial Services Industry; Mexico City; Latin America
Rodríguez Arregui, Álvaro, and Mitchell Weiss. "Fondeadora." Harvard Business School Case 822-077, February 2022. (Revised November 2022.)
- July 2010 (Revised August 2021)
- Supplement
Vereinigung Hamburger Schiffsmakler und Schiffsagenten e.V. (VHSS): Valuing Ships (CW)
By: Benjamin C. Esty and Albert W. Sheen
After booming for more than five years, the global shipping (maritime) industry experienced a dramatic crash in late 2008 as the global financial system froze and the global economy slid into recession. Ship charter rates (revenue) fell by as much as 90% causing prices... View Details
- March 2020 (Revised June 2023)
- Case
EyeControl: Inspiring Communication
By: Paul A. Gompers and Danielle Golan
Eye-controlled communication device startup EyeControl was founded in Tel Aviv, Israel in 2016 by cofounders with a shared personal connection to locked-in syndrome—a neurological disorder that left sufferers cognitively sound, yet paralyzed, with the exception of eye... View Details
Keywords: Health Disorders; Communication Technology; Business Startups; Expansion; Finance; Decision Making; Social Enterprise; Medical Devices and Supplies Industry
Gompers, Paul A., and Danielle Golan. "EyeControl: Inspiring Communication." Harvard Business School Case 820-078, March 2020. (Revised June 2023.)
- September 2010
- Article
Strategies to Fight Ad-sponsored Rivals
By: Ramon Casadesus-Masanell and Feng Zhu
We analyze the optimal strategy of a high-quality incumbent that faces a low-quality ad-sponsored competitor. In addition to competing through adjustments of tactical variables such as price or the number of ads a product carries, we allow the incumbent to consider... View Details
Keywords: Strategy; Business Models; Tactics; Pricing; Business Model; Advertising; Competition; Quality; Price; Product Marketing
Casadesus-Masanell, Ramon, and Feng Zhu. "Strategies to Fight Ad-sponsored Rivals." Management Science 56, no. 9 (September 2010): 1484–1499.
- 14 Feb 2023
- Research & Ideas
When a Vacation Isn’t Enough, a Sabbatical Can Recharge Your Life—and Your Career
A few years ago, DJ DiDonna seemed to have everything going for him. He had started a successful venture called the Entrepreneurial Finance Lab, which used psychometric factors to help banks issuing microloans in the developing world... View Details
Keywords: by Michael Blanding
- 2022
- Working Paper
Why Do Index Funds Have Market Power? Quantifying Frictions in the Index Fund Market
By: Zach Y. Brown, Mark Egan, Jihye Jeon, Chuqing Jin and Alex A. Wu
Index funds are one of the most common ways investors access financial markets and are perceived to be a transparent and low-cost alternative to active investment management. Despite these purported virtues of index fund investing and the introduction of new products... View Details
Keywords: Mutual Funds; Passive Investing; Asset Management; Financial Markets; Investment Funds; Financial Management; Financial Services Industry; United States
Brown, Zach Y., Mark Egan, Jihye Jeon, Chuqing Jin, and Alex A. Wu. "Why Do Index Funds Have Market Power? Quantifying Frictions in the Index Fund Market." Harvard Business School Working Paper, No. 24-019, October 2023. (NBER Working Paper Series, No. 31778, October 2023.)
- 07 Dec 2010
- First Look
First Look: Dec. 7
equity (share issues). If there are no perfect substitutes for equity finance, payout taxes may therefore have an effect on the investment of firms. High taxes will favor investment by firms that can finance internally. Using an... View Details
Keywords: Sean Silverthorne
- 03 Apr 2008
- Working Paper Summaries
Bridge Building in Venture Capital-Backed Acquisitions
Keywords: by Paul A. Gompers & Yuhai Xuan
- March 2017 (Revised November 2021)
- Case
Floodgate: On the Hunt for Thunder Lizards
By: Rory McDonald, Alix Burke, Emma Franking and Nicole Tempest
Founded in 2008, Floodgate pioneered the “micro-VC” category, a new type of investment firm that raised smaller funds and made earlier, smaller investments in technology startups than traditional venture-capital firms. By 2015, Floodgate had raised three funds totaling... View Details
Keywords: Innovation; Business Models; Angel Investors; Crowdfunding; Incubators; Accelerators; Entrepreneurship; Venture Capital; Business Startups; Information Technology; Business Model; Innovation and Invention; Competitive Strategy
McDonald, Rory, Alix Burke, Emma Franking, and Nicole Tempest. "Floodgate: On the Hunt for Thunder Lizards." Harvard Business School Case 617-044, March 2017. (Revised November 2021.)
- Article
An Evaluation of Money Market Fund Reform Proposals
U.S. money market mutual funds (MMFs) are an important source of dollar funding for global financial institutions, particularly those headquartered outside the U.S. MMFs proved to be a source of considerable instability during the financial crisis of 2007–2009,... View Details
Hanson, Samuel G., David S. Scharfstein, and Adi Sunderam. "An Evaluation of Money Market Fund Reform Proposals." IMF Economic Review 63, no. 4 (November 2015): 984–1023.