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Publications
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- 2025
- Working Paper
Bank Financing of Global Supply Chains
By: Laura Alfaro, Mariya Brussevich, Camelia Minoiu and Andrea Presbitero
Finding new international suppliers is costly, so most importers source inputs from a single country. We examine the role of banks in mitigating trade search costs during the 2018–2019 U.S.-China trade tensions. We match data on shipments to U.S. ports with the U.S.... View Details
- 2025
- Working Paper
Generative AI Use by Capital Market Information Intermediaries: Evidence from Seeking Alpha
By: Mark Bradshaw, Chenyang Ma, Benjamin Yost and Yuan Zou
We study the use of generative AI for firm-specific financial analysis on the Seeking Alpha platform. We find that, after the initial launch of ChatGPT in November 2022, the share of AI-generated articles rose sharply to 13.4% of all articles, then declined in late... View Details
- 2025
- Working Paper
Tax Planning, Illiquidity, and Credit Risks: Evidence from DeFi Lending
By: Lisa De Simone, Peiyi Jin and Daniel Rabetti
This study establishes a plausible causal link between tax-planning-induced illiquidity and credit risks in lending markets. Exploiting an exogenous tax shock imposed by the Internal Revenue Service (IRS) on cryptocurrency gains, along with millions of transactions in... View Details
- January 2025
- Case
Index and Active Investing: Vanguard and the New Frontier of Active ETFs
By: Marco Sammon, Luis M. Viceira and Jonathan Kanagasabai
This case explores Vanguard’s strategic decision-making process as it considers entering the growing market for actively managed exchange-traded funds (ETFs). Set in 2024, the case places students in the position of Rodney Comegys, Vanguard’s global head of the Equity... View Details
- November 2024
- Case
Polish Agro: Where Do We Grow from Here?
By: Willy C. Shih, Lena Duchene and Daniela Beyersdorfer
By July 2024, Polish Agro had grown into one of Poland’s fastest-growing agribusinesses, with €230 million in revenue, 82 employees, and operations across Northern Poland. The company supported farmers with essential agricultural inputs like fertilizers and seeds,... View Details
Keywords: Plant-Based Agribusiness; Distribution; Volatility; Customer Focus and Relationships; Customer Value and Value Chain; Climate Change; Environmental Regulation; Profit; Trade; Digital Strategy; Innovation Strategy; Crisis Management; Growth and Development Strategy; Resource Allocation; Advertising; Brands and Branding; E-commerce; Business and Community Relations; Networks; Adaptation; Adoption; Competitive Advantage; Business Model; Health Pandemics; War; Agriculture and Agribusiness Industry; Europe; Poland
- September–October 2024
- Article
Boards Need a New Approach to Technology
By: Tarun Khanna, Mary C. Beckerle and Nabil Y. Sakkab
The boards of too many publicly traded companies are downright timid when considering matters involving science and technology. More often than not, they focus on security and digitization—a defensive posture that fails to consider the bigger opportunities emerging... View Details
- April 2024
- Case
Qualcomm, Inc. in 2024
By: David B. Yoffie and Sarah von Bargen
Qualcomm was facing a new era in 2024. After a judge’s adverse anti-trust decision almost destroyed Qualcomm’s business model, the company was victorious on appeal. The new CEO was optimistic about new growth opportunities in technologies such as 5G, AI, and augmented... View Details
- March 2024
- Article
Establishing the Foundation for Carbon Trading Markets
By: Robert S. Kaplan, Karthik Ramanna and Marc Roston
Poor measurement practices and inadequate controls have led to extensive trading of carbon offset instruments that do not materially reduce the supply of atmospheric GHG. We introduce five carbon offset accounting principles, built from fundamental financial-accounting... View Details
- 2025
- Working Paper
Exports in Disguise? Trade Rerouting During the U.S.-China Trade War
By: Ebehi Iyoha, Edmund Malesky, Jaya Wen and Sung-Ju Wu
This paper introduces a new measure of tariff evasion through rerouting and applies it to the
2018 U.S.–China trade war, focusing on Vietnam as a transit country. We use transaction-level trade data and define rerouting as the flow of a granular eight-digit Harmonized... View Details
- February 2024 (Revised May 2024)
- Case
Lina Khan at the FTC: Redefining Antitrust in the Age of Big Tech
By: Joseph L. Badaracco Jr. and Susan Pinckney
In 2023 and 2024, the Federal Trade Commission and U.S. Department of Justice sued Google, Amazon, and Apple claiming antitrust violations. These lawsuits marked a shift in U.S. antitrust enforcement away from the Chicago School and towards the New Brandeis school of... View Details
- 2024
- Working Paper
Lost in Transmission
By: Thomas Graeber, Shakked Noy and Christopher Roth
For many decisions, people rely on information received from others by word of mouth. How does the process of verbal transmission distort economic information? In our experiments, participants listen to audio recordings containing economic forecasts and are paid to... View Details
- November–December 2023
- Article
Tax-Loss Harvesting with Cryptocurrencies
By: Lin William Cong, Wayne Landsman, Edward Maydew and Daniel Rabetti
We describe the taxation landscape in the cryptocurrency markets, especially concerning U.S. taxpayers, and examine how recent increases in tax scrutiny have led to changes in crypto investors' trading behavior. We argue conceptually and then empirically document that... View Details
- 2023
- Working Paper
Do Active Funds Do Better in What They Trade?
By: Marco Sammon and John J. Shim
We develop two new, simple measures to quantify active fund decisions at the individual position level. The intuition is to separate passive rebalancing induced by flows and position changes from active rebalancing decisions. We find that additive active rebalancing --... View Details
- September–October 2023
- Article
Building Brand Engagement: Lessons from NFTs and Collectibles
By: Frank V. Cespedes and Ben Plomion
The financial hype about Non-Fungible Tokens (NFTs) has cooled considerably since trading in that market went from more than $780 million on May 1, 2022 to less than $295 million for the entire month of May, 2023. But brands launch marketing campaigns in this medium,... View Details
- September 2023
- Supplement
CMA CGM: Reducing the Carbon Footprint of Container Shipping
By: Willy Shih
Marine transport is the most cost-effective way to move large volumes over long distances, and container shipping is the backbone of international trade in goods. Yet shipping contributed 3% of worldwide greenhouse gas emissions, and the deep-sea segment, which... View Details
- September 2023 (Revised January 2024)
- Case
Icahn Enterprises: Ponzi Scheme or Sound Investment
By: Aiyesha Dey, Jonas Heese and James Weber
Icahn Enterprises, a publicly traded limited partnership founded and operated by famed activist investor Carl Icahn, had earned above market returns for over a decade. Between 2018 and early 2023, it had a compound annual return of 31%. Icahn invested in undervalued... View Details
- September 2023
- Supplement
CMA CGM: Reducing the Carbon Footprint of Container Shipping
By: Willy Shih
Marine transport is the most cost-effective way to move large volumes over long distances, and container shipping is the backbone of international trade in goods. Yet shipping contributed 3% of worldwide greenhouse gas emissions, and the deep-sea segment, which... View Details
- September 2023
- Teaching Note
CMA CGM: Reducing the Carbon Footprint of Container Shipping
By: Willy Shih
Teaching Note for HBS Case No. 623-006. Marine transport is the most cost-effective way to move large volumes over long distances, and container shipping is the backbone of international trade in goods. Yet shipping contributed 3% of worldwide greenhouse gas emissions,... View Details
- September 2023
- Supplement
CMA CGM: Reducing the Carbon Footprint of Container Shipping
By: Willy C. Shih
Marine transport is the most cost-effective way to move large volumes over long distances, and container shipping is the backbone of international trade in goods. Yet shipping contributed 3% of worldwide greenhouse gas emissions, and the deep-sea segment, which... View Details
- Summer 2023
- Article
(Un)principled Agents: Monitoring Loyalty after the End of the Royal African Company Monopoly
By: Anne Ruderman and Marlous van Waijenburg
The revocation of the Royal African Company's monopoly in 1698 inaugurated a transformation of the transatlantic slave trade. While the RAC’s exit from the slave trade has received scholarly attention, little is known about the company’s response to the loss of its... View Details