Publications
Publications
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- All HBS Web
(1,627)
- Faculty Publications (393)
- 2024
- Working Paper
What Triggers National Stock Market Jumps?
By: Scott R. Baker, Nicholas Bloom, Steven J. Davis and Marco Sammon
We examine newspapers the day after major stock-market jumps to evaluate the proximate cause, geographic source, and clarity of these events from 1900 in the US, 1930 in the UK and 1980 in 12 other countries. We find four main results. First, the United States plays an... View Details
- January 2022 (Revised February 2022)
- Case
Introducing EVA at ISS: A Better Way to Evaluate CEO Performance and Compensation?
By: Jonas Heese, Charles C.Y. Wang and James Weber
In early 2019, Anthony Campagna, the global director of fundamental research at ISS EVA, a unit of the proxy advisory firm Institutional Shareholder Services (ISS), was preparing to release ISS's analyses of public company performance and CEO compensation ahead of Say... View Details
- January 2022 (Revised November 2023)
- Supplement
Uber in China (C): The Cost of Success for Didi
By: William C. Kirby and Noah B. Truwit
On June 30, 2021, ride-hailing giant Didi Chuxing (Didi) raised $4.4 billion in its initial public offering (IPO) on the New York Stock Exchange (NYSE), the largest IPO of a Chinese company listed on an American exchange since Alibaba raised $25 billion in 2014.... View Details
- 2022
- Working Paper
Heterogeneous Investors and Stock Market Fluctuations
By: Odhrain McCarthy and Sebastian Hillenbrand
We introduce a heterogeneous agent model which features extrapolative beliefs and time-varying risk aversion. The model leads to an empirical framework which we estimate with stock prices, survey data and risk aversion measures. We find that extrapolative beliefs and... View Details
- December 2021 (Revised May 2025)
- Case
Bed Bath & Beyond: The New Strategy to Drive Shareholder Value
By: Benjamin C. Esty and Daniel W. Fisher
At one time, Bed Bath & Beyond was one of the most successful specialty retailers in the United States—its growth and profit margins far exceeded both peer retailers in the home goods market as well as many other discount retailers. But in 2014, its stock price peaked,... View Details
- 2021
- Working Paper
Stock Investors' Returns Are Exaggerated
By: Jesse M. Fried, Paul Ma and Charles C.Y. Wang
The stock market generates less wealth than it appears. We show that total shareholder return (TSR), the standard measure of stock investor performance, substantially exaggerates returns earned by these investors in aggregate, and thus by most investors. The main... View Details
- 2024
- Working Paper
What Drives Variation in Investor Portfolios? Estimating the Roles of Beliefs and Risk Preferences
By: Mark Egan, Alexander MacKay and Hanbin Yang
We present an empirical model of portfolio choice that allows for the nonparametric estimation of investors' (subjective) expectations and risk preferences. Utilizing a comprehensive dataset of 401(k) plans from 2009 through 2019, we explore heterogeneity in asset... View Details
- November 2021 (Revised January 2024)
- Case
The Global Great Depression, 1929-1939
By: Alberto Cavallo, Sophus A. Reinert and Federica Gabrieli
The Great Depression was, by far, the worst economic contraction of the twentieth century, and some of the most important ideas about both fiscal and monetary policy in the second half of the century were developed in response to it. The economic collapse, which... View Details
- November 2021 (Revised December 2022)
- Case
Farfetch: Digital Transformation for Luxury Brands
By: Sunil Gupta, Jill Avery, Elena Corsi and Federica Gabrieli
Farfetch, a global luxury technology platform and digital marketplace had been surfing the wave of digital transformation in the luxury fashion industry since 2008. While the company’s stock price and market valuation had fluctuated since its IPO in 2018, it had... View Details
Keywords: Digital Marketing; Marketplaces; Retailing; Internet Marketing; E-Commerce Strategy; Marketing; Marketing Strategy; Marketing Channels; Brands and Branding; Luxury; Growth and Development Strategy; Digital Transformation; E-commerce; Apparel and Accessories Industry; Beauty and Cosmetics Industry; Fashion Industry; Retail Industry; Web Services Industry; Technology Industry; United Kingdom; Europe; Portugal; China
- October 2021 (Revised September 2022)
- Case
GoPro: Becoming a Subscription Hero
By: Elie Ofek, Marco Bertini and Nicole Tempest Keller
In 2021, Nick Woodman, founder and CEO of GoPro, was reviewing the company’s subscription offering, considering whether to extend it beyond benefits that were directly related to the company’s iconic camera. Founded in 2002, GoPro had gained renown for its innovative... View Details
- September 2021 (Revised March 2024)
- Case
Tesla in 2023: 'Electrified' Competition
By: Eric Van den Steen, Ramon Casadesus-Masanell and Karen Elterman
Over its 17 years in existence, Tesla had redefined people’s view of electric cars, and in 2020, the company saw its stock rise by more than 700% to became the most valuable carmaker in the world. In December 2020, Tesla celebrated its fifth consecutive quarter of... View Details
Keywords: Barrier To Entry; Competitive Advantage; Innovation; Tesla; Automotive Industry; Sustainable Competitive Advantage; Values; Vision; Learning By Doing; Economies Of Scale; Electric Vehicle; Scenario Planning; Batteries; Competitive Strategy; Product Positioning; Profit; Competition; Industry Growth; Auto Industry
- 2021
- Article
How Top Managers Use the Entrepreneurial Gap to Drive Strategic Change
By: Robert L. Simons and Antonio Davila
Prior research provides strong evidence for the association between business strategy and the design and use of management control systems. We complement this research by examining the role of management control systems in situations of strategic change. We report the... View Details
- August 2021 (Revised November 2021)
- Case
The NCB Capital Turnaround: Waking the Sleeping Giant
By: Sandra J. Sucher, Gamze Yucaoglu, Shalene Gupta and Fares Khrais
The case opens in 2019, five years after, Sarah Al Suhaimi, CEO of NCB Capital (NCBC), the investment arm of Saudi’s largest bank, NCB, took the helm. Having successfully turned the business to make it the market leader, she was contemplating her next steps as... View Details
- June 2021 (Revised March 2022)
- Teaching Note
StockX: The Stock Market of Things
By: Chiara Farronato
Teaching Note for HBS Case Nos. 620-062 and 621-107. View Details
- June 2021 (Revised November 2021)
- Case
Asian Corporate Governance Association: Stemming a 'Race to the Bottom' by Stock Exchanges?
By: Charles C.Y. Wang and Billy Chan
This case describes the movement towards dual-class listings on Asian stock exchanges and the efforts of the Asian Corporate Governance Association (ACGA), a not-for-profit shareholder advocacy group, to discourage this trend. As a not-for-profit organization with no... View Details
- May 2021 (Revised September 2021)
- Case
Accounting for Bitcoin at Tesla
By: Charles C.Y. Wang and Siyu Zhang
On February 8, 2021, Tesla revealed, through its 10-K filing to the Securities and Exchange Commission (SEC), that it had purchased $1.5 billion of Bitcoin, totaling 7.5% of the company’s cash, and that it planned to accept payments in the cryptocurrency soon. These... View Details
- 2021
- Working Paper
Going by the Book: Valuation Ratios and Stock Returns
By: Ki-Soon Choi, Eric So and Charles C.Y. Wang
We study the use of firms’ book-to-market ratios (B/M) in value investing and its implications for comovements in firms’ stock returns and trading volumes. We show B/M has become increasingly detached from common alternative valuation ratios over time while also... View Details
- April 22, 2021
- Article
Shareholders Are Pressing for Climate Risk Disclosures. That's Good for Everyone
By: Caroline Flammer, Michael W. Toffel and Kala Viswanathan
Does shareholder activism induce firms to voluntarily disclose climate change risks? And how do markets respond to these disclosures? New research finds that the extent of climate-risk disclosure increases by approximately 4.6% for each environment-related proposal... View Details
- April 2021
- Case
Transforming BlackBerry: From Smartphones to Software
By: Ranjay Gulati and Nicole Tempest Keller
On the verge of failure, BlackBerry brought in John Chen as CEO in 2013 to orchestrate a bold turnaround of the company. Once an iconic leader in the smartphone market, BlackBerry was best known for its tactile QWERTY keyboard, strong security, and a focus on business... View Details
Keywords: Pivot; Managing Change; Turnaround; Smartphone; Change Management; Leading Change; Transformation; Organizational Change and Adaptation; Digital Platforms; Change; Information Infrastructure; Applications and Software; Competitive Strategy; Cybersecurity; Technology Industry; Transportation Industry; Canada
- April 2021 (Revised July 2021)
- Case
StockX: The Stock Market of Things (Abridged)
By: Chiara Farronato, John J. Horton, Annelena Lobb and Julia Kelley
Founded in 2015 by Dan Gilbert, Josh Luber, and Greg Schwartz, StockX was an online platform where users could buy and sell unworn luxury and limited-edition sneakers. Sneaker resale prices often fluctuated over time based on supply and demand, creating a robust... View Details
Keywords: Markets; Auctions; Bids and Bidding; Demand and Consumers; Consumer Behavior; Analytics and Data Science; Market Design; Digital Platforms; Market Transactions; Marketplace Matching; Supply and Industry; Analysis; Price; Product Marketing; Product Launch; Apparel and Accessories Industry; Fashion Industry; North and Central America; United States; Michigan; Detroit