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- 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; Public Equity; Private Equity; Financial Liquidity; Financial Instruments; Debt Securities; Credit Derivatives and Swaps; Bonds; Stocks; Financial Strategy; Interest Rates; Governance; Governing and Advisory Boards; Crisis Management; Resource Allocation; Investment; Financial Services Industry; United Kingdom; England; London; Europe
- June 2025
- Case
Vail Resorts: Responding to Activist Pressure (A)
By: Benjamin C. Esty and Edward A. Meyer
On January 27, 2025, the head of a relatively small hedge fund named Late Apex Partners sent a highly critical letter to the board of directors of Vail Resorts, the world’s largest ski resort operator. In his letter, and the 88-slide presentation that accompanied his... View Details
Keywords: Corporate Finance; Capital Budgeting; Corporate Governance; Competitive Advantage; Competitive Strategy; Leading Change; Valuation; Investment Activism; Climate Change; Management Succession; Financial Management; Risk Management; Sports Industry; Entertainment and Recreation Industry; Travel Industry; United States; Australia; Canada
- Working Paper
Index Rebalancing and Stock Market Composition: Do Indexes Time the Market?
By: Marco Sammon and John J. Shim
Value-weighted indexes must rebalance in response to stock market composition changes, e.g., issuance, buybacks, and IPOs. In doing so, existing index funds implicitly engage in market timing. Index funds’ long-short rebalancing portfolios have a -3.5% annual return... View Details
- 2025
- Working Paper
Corporate Actions as Moral Issues
By: Zwetelina Iliewa, Elisabeth Kempf and Oliver Spalt
We examine nonpecuniary preferences across a broad set of corporate actions using a representative sample of the U.S. population. Our core findings, based on large-scale online surveys, are that (i) self-reported nonpecuniary concerns are large both for stock market... View Details
- April 2025
- Article
The Disappearing Index Effect
By: Robin Greenwood and Marco Sammon
The abnormal return associated with a stock being added to the S&P 500 has fallen from an average
of 7.4% in the 1990s to 0.3% over the past decade. This has occurred despite a significant increase in the
share of stock market assets linked to the index. A similar... View Details
- March 2025 (Revised April 2025)
- Case
WallStreetBets: Democratizing Retail Investing
By: Joseph Pacelli and Alexis Lefort
In summer 2024, Jaime Rogozinski anticipated the launch of a day-trading eSports event, a vision he had nurtured for years. Rogozinski, the founder of the influential subreddit WallStreetBets (WSB), created the forum in 2012 as a space for retail traders to explore... View Details
- February 2025 (Revised March 2025)
- Case
Accounting for Bitcoin at Block
By: Charles C.Y. Wang, Seil Kim and Sa-Pyung Sean Shin
Abstract: This case explores Block Inc.'s accounting practices for Bitcoin transactions and their impact on financial reporting. Following a 10% stock price drop after missing revenue estimates in Q3 2024, Block faced scrutiny over its Bitcoin-driven revenue model.... View Details
- February 2025 (Revised May 2025)
- Case
Align Partners and SM Entertainment: Korean Shareholder Activism Meets K-Pop (A)
By: Charles C.Y. Wang and Billy Chan
For years, institutional investors had experienced very limited success in influencing the management of listed companies through shareholder activist campaigns in Korea. The common practice of circular ownership and public resentment toward foreign shareholder... View Details
- February 2025
- Supplement
Align Partners and SM Entertainment: Korean Shareholder Activism Meets K-Pop (B)
By: Charles CY Wang and Billy Chan
For years, institutional investors had experienced very limited success in influencing the management of listed companies through shareholder activist campaigns in Korea. The common practice of circular ownership and public resentment toward foreign shareholder... View Details
- January 2025 (Revised March 2025)
- Case
Creating Value by Splitting Aster: Can One Minus One Equal Two?
By: V.G. Narayanan and Kairavi Dey
Aster DM Healthcare (Aster), founded by Dr. Azad Moopen in 1987, is a prominent healthcare conglomerate with operations spanning hospitals, clinics, retail pharmacies, and diagnostic centers across India and the GCC. After its 2018 listing on India’s National Stock... View Details
- 2024
- Working Paper
Climate Solutions, Transition Risk, and Stock Returns
By: Shirley Lu, Edward J. Riedl, Simon Xu and George Serafeim
Using large language models to measure firms' climate solution products and services, we find that high-climate solution firms exhibit lower stock returns and higher market valuation multiples. Their stock prices respond positively to events signaling increased demand... View Details
- 2024
- Working Paper
Catalysts for Climate Solutions: Corporate Responses to Venture Capital Financing of Climate-tech Startups
By: Shirley Lu, George Serafeim and Simon Xu
We study whether incumbent firms increase their product focus on climate solutions in response to venture capital (VC) financing of climate-tech startups. Using large language models to measure a firm's focus on climate solutions, we find that incumbents in similar... View Details
- 2024
- Working Paper
Categorical Processing in a Complex World
By: Marco Sammon, Thomas Graeber and Christopher Roth
In real-world news environments, quantitative information is rarely presented in isolation; it is characterized through qualitative comparisons with various reference levels. Company earnings, for example, are commonly compared to analyst forecasts, previous earnings,... View Details
- November 2024
- Article
Perceptions About Monetary Policy
By: Michael D. Bauer, Carolin Pflueger and Adi Sunderam
We estimate perceptions about the Federal Reserve’s monetary policy rule from panel data on professional forecasts of interest rates and macroeconomic conditions. The perceived dependence of the federal funds rate on economic conditions varies substantially over time,... View Details
- September 2024
- Supplement
Allbirds: Decarbonizing Fashion (B)
By: Michael W. Toffel, Kenneth P. Pucker and Stacy Straaberg
The Allbirds: Decarbonizing Fashion (B) case encourages students to assess Allbirds’ product development and go-to-market strategies now that Allbirds is a publicly listed company. The (B) case provides a 2024 update on Allbirds including its initial public offering,... View Details
Keywords: Financial Markets; Initial Public Offering; Global Strategy; Collaborative Innovation and Invention; Innovation Strategy; Knowledge Sharing; Distribution; Corporate Social Responsibility and Impact; Mission and Purpose; Going Public; Performance; Diversification; Stocks; Transformation; Fashion Industry; United States; San Francisco; California; Europe; Asia; New Zealand
- August 2024 (Revised October 2024)
- Case
Discerene Group: Long-Term Public-Markets Investing
By: Luis M. Viceira and Brent Schwarz
This case discusses active investing based on fundamental valuations and price distortions created by market events, and whether contractual terms between investment managers and their investors can help align incentives between long-term investors and active managers.... View Details
- 2024
- Working Paper
Who Clears the Market When Passive Investors Trade?
By: Marco Sammon and John J. Shim
We find that firms are the primary sellers of shares when index funds are net buyers, providing shares at a nearly one-for-one rate. Rather than provide liquidity, most demand-side institutions trade in the same direction as index funds, especially over long horizons.... View Details
- July 2024
- Case
Jacqueline Cook at Vendasta: Debating an IPO
By: Reza Satchu, Tom Quinn and Andrew Kosc
In May 2021, after a surge in demand for digital services that prompted high valuations for startups across the Canadian tech sector, Saskatchewan-based Vendasta entered the final stages of the initial public offering (IPO) process. COO Jacqueline Cook had invested her... View Details
Keywords: Business Growth and Maturation; Business Startups; Interpersonal Communication; Cost vs Benefits; Forecasting and Prediction; Business Cycles; Entrepreneurship; Fairness; Capital Markets; Private Equity; Investment Banking; Stock Options; Financial Markets; Initial Public Offering; Institutional Investing; Price Bubble; Digital Platforms; Digital Transformation; Internet and the Web; Leadership; Growth and Development Strategy; Managerial Roles; Agreements and Arrangements; Going Public; Ownership Stake; Performance Expectations; Work-Life Balance; Strategic Planning; Business and Stakeholder Relations; Rank and Position; Risk and Uncertainty; Opportunities; Happiness; Reputation; Status and Position; Well-being; Information Technology Industry; Retail Industry; Canada
- 2024
- Working Paper
The Golden Revolving Door
By: Ling Cen, Lauren Cohen, Jing Wu and Fan Zhang
Using both the onset of the US-China trade war in 2018 and the most recent Russia-Ukraine war and associated trade tensions, we show a counterintuitive pattern in global trade. Namely, while the average firm trading with these nations significantly decreases their... View Details
- July 2024
- Article
The Passive-Ownership Share Is Double What You Think It Is
By: Alex Chinco and Marco Sammon
Each time a stock gets added to or dropped from a benchmark index, we ask: “How much money would have to be tracking that index to explain the huge spike in rebalancing volume we observe on reconstitution day?” While index funds held 16% of the US stock market in 2021,... View Details