Publications
Publications
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- All HBS Web
(1,283)
- Faculty Publications (681)
- December 2023
- Article
Intermediary Balance Sheets and the Treasury Yield Curve
By: Wenxin Du, Benjamin Hebert and Wenhao Li
We document a regime change in the Treasury market post-Global Financial Crisis (GFC): dealers switched from net short to net long Treasury bonds. We construct “net-long” and “net-short” curves that account for balance sheet and financing costs, and show that actual... View Details
- November 2023
- Article
A Quantity-Driven Theory of Term Premia and Exchange Rates
We develop a model in which specialized bond investors must absorb shocks to the supply and demand for long-term bonds in two currencies. Since long-term bonds and foreign exchange are both exposed to unexpected movements in short-term interest rates, a shift in the... View Details
- 2023
- Working Paper
The Equity Market Implications of the Retail Investment Boom
By: Philippe van der Beck and Coralie Jaunin
This paper quantifies the impact of Robinhood traders on the US equity market. Within a structural model, we estimate retail and institutional demand curves and derive aggregate pricing implications via market clearing. The inelastic nature of institutional demand... View Details
- October 2023 (Revised March 2024)
- Case
GameStop: Social Media Finds a Cheat Code (A)
By: Joseph Pacelli and Sarah Mehta
This case covers the events leading up to the 2021 GameStop short squeeze. Using GameStop as an illustrative example, the case explores the rise in retail trading, increased financial information sharing on social media, and the gamification of investing enabled by... View Details
- October 2023
- Article
Stock Market Stimulus
By: Robin Greenwood, Toomas Laarits and Jeffrey Wurgler
We study the stock market effects of the arrival of the three rounds of “stimulus checks” to U.S. taxpayers and the single round of direct payments to Hong Kong citizens. The first two rounds of U.S. checks appear to have increased retail buying and share prices of... 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
- Case
Diamond Standard
By: Lauren H. Cohen, Zhaoheng Gong and Grace Headinger
Cormac Kinney, Founder and CEO of Diamond Standard, was on a mission to transform the U.S. diamond market through unlocking the precious gems as market-traded assets. As a serial FinTech entrepreneur, he hoped to add an additional service to his vault: Carats. The... View Details
Keywords: Tokenization; Fintech; Cryptocurrency; Liquidity; Digital; Rare Earth Minerals; Decentralized; Crypto Economy; Financial Product; Metals; Diamonds; Commodity; Assets; Financial Instruments; Financial Institutions; Financial Markets; Investment; Technological Innovation; Natural Resources; Business Startups; Currency; Financial Services Industry; United States
- September 2023
- Article
Stock Price Reactions to ESG News: The Role of ESG Ratings and Disagreement
By: George Serafeim and Aaron Yoon
We investigate whether ESG ratings predict future ESG news and the associated market reactions. We find that the consensus rating predicts future news, but its predictive ability diminishes for firms with large disagreement between raters. Relation between news and... View Details
Keywords: ESG; ESG (Environmental, Social, Governance) Performance; ESG Disclosure; ESG Ratings; ESG Reporting; ESG Disclosure Metrics; Sustainability; Investments; Disagreement; Rating Disagreement; Ratings; Environmental Sustainability; Social Issues; Corporate Social Responsibility and Impact; Performance; News; Investment; Financial Markets; Stocks; Price
- 2023
- Working Paper
The Stock Market and Bank Risk-Taking
By: David S. Scharfstein and Antonio Falato
Using confidential supervisory risk ratings, we document that banks increase risk after they go public compared to a control group of banks that filed to go public but withdrew their filings for plausibly exogenous reasons. The increase in risk increases short-term... View Details
- August 2023 (Revised October 2024)
- Case
Accounting Outages at Plug Power? (A)
By: Jonas Heese, Joseph Pacelli and James Barnett
Set immediately after a December 2019 short-seller attack, the case explores Plug Power’s long challenging history. It then focuses on two key issues raised in the short-seller report related to lease accounting and stock warrants that Plug purportedly used to boost... View Details
- July 2023 (Revised February 2024)
- Case
Equity Restructuring at Dell Technologies: Buy Out, Buy Up, Buy In (A)
By: Stuart C. Gilson and Sarah L. Abbott
In November 2018, Dell Technologies was poised to re-enter the public markets by means of a complex recapitalization that would replace an entire class of publicly-traded “tracking stock,” with new shares that would trade publicly without the need of a formal IPO. The... View Details
- June 2023 (Revised April 2025)
- Case
Optimalen Capital
A new client portfolio manager at a quantitative investment management firm must explain why her firm, Optimalen Capital, has rebalanced a client portfolio with a set of trades that seem unintuitive. In particular, Optimalen has added to its position of Walmart (ticker... View Details
- April 2023 (Revised July 2023)
- Case
Fermenting Accounting Problems at Vermont Kombucha Corp.
By: Tatiana Sandino and Marshal Herrmann
Founded in 2005, Vermont Kombucha Corp. (V-Ko) was an early mover in the fledgling U.S. market for kombucha, a drink brewed for its health benefits. Early on, the company captured more than 90% of market share. Under the leadership of its founder and CEO, Joe Williams,... View Details
- February 2023
- Teaching Note
Bear to Bull? An Analyst’s Journey with Netflix
By: Aiyesha Dey and Joseph Pacelli
Teaching Note for HBS Case No. 123-001. Wedbush Securities analyst Michael Pachter said “hell freezing over” was more likely than him upgrading the “sell” rating he had maintained on movie and television streaming giant Netflix since 2011, despite meteoric subscriber... View Details
- February 2023
- Article
Disruption and Credit Markets
By: Bo Becker and Victoria Ivashina
We show that over the past half century innovative disruptions were central to understanding corporate defaults. In a given year, industries experiencing abnormally high VC or IPO activity subsequently see higher default rates, higher segment exits by conglomerates,... View Details
- February 2023
- Article
The Effect of Systems of Management Controls on Honesty in Managerial Reporting
By: Aishwarrya Deore, Susanna Gallani and Ranjani Krishnan
While budgetary controls with capital rationing are optimal in theory and widespread in practice, empirical research documents their association with higher employee dishonesty compared to budgetary controls without rationing. In this study, we examine whether... View Details
- January 2023
- Case
The Ford Motor Company Green Bond
By: Vikram S Gandhi and James Barnett
In November 2021, Ford Motor Company offered a $2.5 billion green bond to finance investments in electrification. Issuance of green bonds significantly increased into the 2020s, and to date, the Ford Motor Company green bond was the largest such bond offered by a... View Details
- January 2023
- Case
Gerald Weiss (2023)
By: Brian J. Hall, Carleen Madigan, Andrew Wasynczuk and Caroline Witten
Gerald Weiss left Wall Street for the promise of a CFO position at a well-established corporation. He was given a 10-year options package with a guaranteed floor of $12 million and unlimited upside. To ensure the entire package would be worth at least $12 million after... View Details
- December 2022
- Article
Cost Standard Set Program: Moving Forward to Standardization of Cost Assessment Based on Clinical Condition
By: Anna Paula Beck da Silva Etges, Richard D. Urman, Anne Geubelle, Robert Kaplan and Carisi Anne Polanczyk
This communication announces the International Cost Standard Set Program. Its goal is to establish global standardized frameworks for measuring the costs of treating specific clinical conditions. A scientific committee, including 16 international healthcare cost... View Details
- 2022
- Other Article