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- August 2025
- Article
Revenue Collapses and the Consumption of Small Business Owners in the COVID-19 Pandemic
By: Olivia S. Kim, Jonathan A. Parker and Antoinette Schoar
Using financial account data linking small businesses to their owner households, we examine how business owners’ consumption responded to changes in business revenues during the COVID-19 crisis. In the first two months following the National Emergency, business... View Details
- July 2025
- Background Note
Ecosystem Disruption: A Multi-Stakeholder View of Disruptive Innovations
By: E. Ofek, Michael Haenlein, Eitan Muller and Roman Welden
The purpose of this note is to offer a more expansive view of how innovations disrupt markets than has been portrayed thus far in the extant literature by taking an ecosystem perspective. This broader outlook allows examining not only the product strategies of the... View Details
- July 2025
- Teaching Note
Designed for Purpose: “Never a Failure. Always a Lesson”
By: James Riley and Andrea Dorbu
In 2017, Rihanna launched Fenty Beauty under LVMH, disrupting the cosmetics industry with an inclusive 'Beauty for All' strategy that emphasized accessibility across skin tones. The brand’s success was followed by the launch of Savage X Fenty, a lingerie line upholding... View Details
- July 2025
- Case
Designed for Purpose: “Never a Failure. Always a Lesson”
By: James Riley and Andrea Dorbu
In 2017, Rihanna launched Fenty Beauty under LVMH, disrupting the cosmetics industry with an inclusive 'Beauty for All' strategy that emphasized accessibility across skin tones. The brand’s success was followed by the launch of Savage X Fenty, a lingerie line upholding... View Details
- July–August 2025
- Article
Don’t Let an AI Failure Harm Your Brand
How companies market their AI systems affects the repercussions they face when their products fail. Marketers must promote their AI products with potential failure in mind. To do that, they must first understand consumers’ unique attitudes toward AI. Marketers who... View Details
- 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
- July 2025
- Module Note
Supply and Demand for Strategists
This module note introduces students to the foundational microeconomic principles of supply and demand. It uses the example of an aluminum plant (specifically, production quantity and shutdown decisions) to discuss short-run vs. long-run decisions, marginal costs, sunk... View Details
Keywords: Business Exit or Shutdown; Business or Company Management; Business Strategy; Competition; Competitive Advantage; Cost of Capital; Cost vs Benefits; Decision Making; Decisions; Demand and Consumers; Economics; Economic Systems; For-Profit Firms; Market Entry and Exit; Market Participation; Markets; Metals and Minerals; Microeconomics; Price; Revenue; Strategy; Supply and Industry; Manufacturing Industry
- 2025
- Working Paper
Productivity Beliefs and Efficiency in Science
By: Fabio Bertolotti, Kyle R. Myers and Wei Yang Tham
We develop a method to estimate producers’ productivity beliefs in settings where output quantities and input prices are unobservable, and we use it to evaluate allocative efficiency in the market for science. Our model of researchers’ labor supply shows that their... View Details
- June 2025
- Case
Redefining the Edge: Jahez’s Strategic Pivot in Saudi Arabia’s Food Delivery Battle
By: Krishna G. Palepu and Ahmed Dahawy
Jahez made its mark in Saudi Arabia’s food delivery market by serving customers willing to pay more for reliable, high-quality service—a segment largely overlooked by other platforms. As the company grew, it expanded into the mass market and developed a network of... View Details
- 2025
- Working Paper
Heterogeneous Beliefs and Stock Market Fluctuations
By: Odhrain McCarthy and Sebastian Hillenbrand
This paper examines the role of heterogeneous investor beliefs in explaining stock market puzzles. Using survey data, we show that individual investors and investment professionals, such as equity analysts and strategists, form distinct beliefs. These groups rely on... View Details
- June 2025
- Teaching Note
Market Dynamics and Moral Dilemmas: Novo Nordisk's Weight Loss Drugs
Teaching Note for HBS Case No. 324-114. View Details
- June 2025
- Case
AI Wars in 2025
By: Andy Wu and Anna Yang
In June 2025, Google leaders in Mountain View, CA convened after its parent company Alphabet shed a quarter-trillion in market capitalization in a matter of months. The immediate spark—the quiet revelation that Google searches had dipped for the first time in 20... View Details
- June 2025 (Revised July 2025)
- Case
Full-funnel Advertising on TikTok
By: Jeremy Yang, Ayelet Israeli and Alexis Lefort
In 2025 TikTok is working to grow its brand and performance advertising business, along with a new integrated full-funnel solution. As an emerging media platform with unique ad formats and user behavior in a privacy-first environment, TikTok faces both significant... View Details
- June 2025
- Supplement
Full-Funnel Advertising on TikTok: An Experiment
By: Jeremy Yang and Ayelet Israeli
TikTok’s Marketing Science team developed a new type of advertising strategy beyond branding and performance advertising, called full-funnel advertising. Branding ads focused on brand building at the top of the funnel by generating consumer awareness, while performance... View Details
- June 2025
- Exercise
Full-Funnel Advertising on TikTok: An Experiment
By: Jeremy Yang and Ayelet Israeli
TikTok’s Marketing Science team developed a new type of advertising strategy beyond branding and performance advertising, called full-funnel advertising. Branding ads focused on brand building at the top of the funnel by generating consumer awareness, while performance... View Details
- June 2025
- Exercise
Full-Funnel Advertising on TikTok: An Experiment (Solution)
By: Jeremy Yang and Ayelet Israeli
TikTok’s Marketing Science team developed a new type of advertising strategy beyond branding and performance advertising, called full-funnel advertising. Branding ads focused on brand building at the top of the funnel by generating consumer awareness, while performance... View Details
- June 2025
- Case
TagHive: Edtech Pricing and Distributor Decisions
By: Isamar Troncoso, Frank V. Cespedes and Stacy Straaberg
Education technology (edtech) company TagHive, founded in 2017, used a direct sales team and third-party distributors to sell its Class Saathi hardware and software solution to 300 clients, mainly primary and secondary schools in India. The product aimed to improve... View Details
Keywords: Business Model; Marketing Channels; Marketing Strategy; Product Marketing; Social Marketing; Information Infrastructure; Information Technology; Internet and the Web; Mobile and Wireless Technology; Technology Adoption; Education; Teaching; Price; Customer Relationship Management; Customer Satisfaction; Growth and Development; Technological Innovation; Education Industry; Technology Industry; India; South Korea
- June 2025
- Case
TfL Pension Fund and the 2022 Gilt Market Crisis
By: Emil N. Siriwardane, Vincent Dessain, Emer Moloney and Carlota Moniz
On September 27, 2022, Padmesh Shukla, CIO of the Transport for London (TfL) Pension Fund, was keeping a careful eye on the turmoil in the U.K. sovereign bond (or gilt) market. When the new government announced the largest tax cuts the U.K. had seen in half a century,... View Details
Keywords: Financial Crisis; Macroeconomics; Assets; Asset Management; Borrowing and Debt; Corporate Finance; Capital Markets; Equity; Financial Liquidity; Financial Instruments; Financial Strategy; Interest Rates; Governing and Advisory Boards; Crisis Management; Resource Allocation; Investment; Financial Services Industry; United Kingdom; England; London; Europe
- 2025
- Working Paper
Fiscal Externalities of Transaction Taxes: Evidence from the Los Angeles Mansion Tax
By: Daniel Green, Vikram Jambulapati, Jack Liebersohn and Tejaswi Velayudhan
We estimate the fiscal externalities of a property transfer tax, the Los Angeles
“Mansion Tax”, on the revenues from property taxes when assessed values are closely
tied to transactions. In California, as in over half of U.S. states, growth in tax as-
sessments... View Details
- May–June 2025
- Article
Algorithmic Assortment Curation: An Empirical Study of Buybox in Online Marketplaces
By: Santiago Gallino, Nil Karacaoglu and Antonio Moreno
Most online sales worldwide take place in marketplaces that connect sellers and buyers. The presence of numerous third-party sellers leads to a proliferation of listings for each product, making it difficult for customers to choose between the available options. Online... View Details