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      • 2022
      • Working Paper

      Stock Market Stimulus

      By: Robin Greenwood, Toomas Laarits and Jeffrey Wurgler
      The stock market crash in March 2020 was followed by a historic rebound, particularly among stocks favored by retail investors. We study the effects of the arrival of the three rounds of “stimulus checks” to U.S. taxpayers and the single round of direct payments to...  View Details
      Keywords: Stock Market; COVID-19 Pandemic; Fiscal Stimulus; Stimulus Payments; Impact; Stocks; System Shocks; Price; Spending; United States; Hong Kong; China
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      Greenwood, Robin, Toomas Laarits, and Jeffrey Wurgler. "Stock Market Stimulus." NBER Working Paper Series, No. 29827, March 2022.
      • March 2022
      • Teaching Note

      Farfetch: Digital Transformation for Luxury Brands

      By: Jill Avery and Sunil Gupta
      Teaching Note for HBS Case No. 522-051. 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...  View Details
      Keywords: Brand Management; Retailing; Two Sided Markets; SaaS; Digital Marketing; Online Marketing; Marketing; Marketing Channels; Brands and Branding; Luxury; Digital Transformation; E-commerce; Retail Industry; Fashion Industry; London; United Kingdom; Portugal
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      Avery, Jill, and Sunil Gupta. "Farfetch: Digital Transformation for Luxury Brands." Harvard Business School Teaching Note 522-061, March 2022.
      • 2022
      • Article

      Which Corporate ESG News Does the Market React To?

      By: George Serafeim and Aaron Yoon
      Using a dataset that classifies firm-level ESG news as positive and negative, we examine how stock prices react to different types of ESG news. We analyze 111,020 firm-day observations for 3,126 companies and find that prices react only to issues identified as...  View Details
      Keywords: ESG; ESG (Environmental, Social, Governance) Performance; ESG Ratings; Social Capital; Environment; Sustainability; CSR; Stock Price; Stock Market Expectations; Materiality; Market Reaction; Environmental Sustainability; Governance; Social Issues; Performance; News
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      Serafeim, George, and Aaron Yoon. "Which Corporate ESG News Does the Market React To?" Financial Analysts Journal 78, no. 1 (2022): 59–78.
      • 2022
      • Working Paper

      Excess Reconstitution-Day Volume

      By: Alex Chinco and Marco Sammon
      FTSE/Russell reconstitutes its Russell 1000 and 2000 indexes on the last Friday of June each year, and it announces which stocks will switch indexes roughly two weeks in advance. Exchange-traded funds (ETFs) must do all of their rebalancing on Russell’s reconstitution...  View Details
      Keywords: Indexing; Passive Investing; Exchange-traded Funds (ETFs); Russell Reconstitution Day; Trading Volume; Information-based Asset Pricing; Investment; Investment Funds; Asset Pricing
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      Chinco, Alex, and Marco Sammon. "Excess Reconstitution-Day Volume." Working Paper, February 2022.
      • 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
      Keywords: Jobs and Positions; Compensation and Benefits; Performance; Performance Productivity; Measurement and Metrics; Analytics and Data Science; Value; Business or Company Management; Performance Evaluation; Business and Shareholder Relations
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      Heese, Jonas, Charles C.Y. Wang, and James Weber. "Introducing EVA at ISS: A Better Way to Evaluate CEO Performance and Compensation?" Harvard Business School Case 122-061, January 2022. (Revised February 2022.)
      • December 2021 (Revised February 2022)
      • 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
      Keywords: Competitive Strategy; Competitive Advantage; Value Creation; Diversification; Corporate Governance; Leading Change; Performance Evaluation; Valuation; Investment Activism; Retail Industry; Consumer Products Industry; United States
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      Esty, Benjamin C., and Daniel W. Fisher. "Bed Bath & Beyond: The New Strategy to Drive Shareholder Value." Harvard Business School Case 722-408, December 2021. (Revised February 2022.)
      • December 2021
      • Article

      Trade Policy Uncertainty and Stock Returns

      By: Marcelo Bianconi, Federico Esposito and Marco Sammon
      A recent literature has documented large real effects of trade policy uncertainty (TPU) on trade, employment, and investment, but there is little evidence that investors are compensated for bearing such risk. To quantify the risk premium associated with TPU, we exploit...  View Details
      Keywords: Trade Policy; Uncertainty; Stock Returns; Risk Premium; Tariff Rates; Portfolio Analysis; Trade; Policy; Risk and Uncertainty; Stocks; Investment Return
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      Bianconi, Marcelo, Federico Esposito, and Marco Sammon. "Trade Policy Uncertainty and Stock Returns." Art. 102492. Journal of International Money and Finance 119 (December 2021).
      • November 2021 (Revised March 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
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      Gupta, Sunil, Jill Avery, Elena Corsi, and Federica Gabrieli. "Farfetch: Digital Transformation for Luxury Brands." Harvard Business School Case 522-051, November 2021. (Revised March 2022.)
      • September 2021 (Revised October 2021)
      • Case

      Tesla's Uncertain Fate as EV Race Accelerates

      By: David J. Collis and Haisley Wert
      By September 2021, Tesla had a staggering market cap of $755 billion. As the leader of the automobile industry, Tesla’s worth surpassed that of the six largest runner-ups combined, including Toyota, Volkswagen, BYD, Daimler, Great Wall Motors, and General Motors. As...  View Details
      Keywords: Electric Vehicles; Strategy; Corporate Strategy; Valuation; Competitive Advantage; Value Creation; Auto Industry
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      Collis, David J., and Haisley Wert. "Tesla's Uncertain Fate as EV Race Accelerates." Harvard Business School Case 722-368, September 2021. (Revised October 2021.)
      • July 2021
      • Article

      Material Sustainability Information and Stock Price Informativeness

      By: Jody Grewal, Clarissa Hauptmann and George Serafeim
      As part of the SEC’s revision of Regulation S-K, many investors proposed the mandatory disclosure of sustainability information in the form of environmental, social, and governance (ESG) data. However, progress is contingent on collecting evidence regarding which...  View Details
      Keywords: Voluntary Disclosure; Accounting Standards; Sustainability; Nonfinancial Information; Corporate Social Responsibility; Stock Price Informativeness; Synchronicity; Environmental Sustainability; Corporate Disclosure; Corporate Accountability; Stocks; Price; Corporate Social Responsibility and Impact; Accounting; Standards
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      Grewal, Jody, Clarissa Hauptmann, and George Serafeim. "Material Sustainability Information and Stock Price Informativeness." Journal of Business Ethics 171, no. 3 (July 2021): 513–544.
      • 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
      Keywords: Reporting; Transparency; Activism; Shareholder Activism; Shareholder Engagement; Climate Change; Corporate Disclosure; Investment Activism; Business and Shareholder Relations
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      Flammer, Caroline, Michael W. Toffel, and Kala Viswanathan. "Shareholders Are Pressing for Climate Risk Disclosures. That's Good for Everyone." Harvard Business Review Digital Articles (April 22, 2021).
      • 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
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      Gulati, Ranjay, and Nicole Tempest Keller. "Transforming BlackBerry: From Smartphones to Software." Harvard Business School Case 421-052, April 2021.
      • 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
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      Farronato, Chiara, John J. Horton, Annelena Lobb, and Julia Kelley. "StockX: The Stock Market of Things (Abridged)." Harvard Business School Case 621-107, April 2021. (Revised July 2021.)
      • Article

      Research: The Cost of a Single U.S. Immigration Restriction

      By: Dany Bahar, Prithwiraj Choudhury and Britta Glennon
      On June 22, 2020, President Trump passed an Executive Order drastically cutting the number of highly skilled international workers eligible for non-immigrant visas to the U.S. To quantify the impact of this policy, the authors examined the immediate change in stock...  View Details
      Keywords: Work Visas; H1-B; Restriction; Impact; Immigration; Governing Rules, Regulations, and Reforms; Cost; Economy
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      Bahar, Dany, Prithwiraj Choudhury, and Britta Glennon. "Research: The Cost of a Single U.S. Immigration Restriction." Harvard Business Review (website) (January 22, 2021).
      • 2020
      • Working Paper

      Retail Investors' Contrarian Behavior Around Earnings, Attention, and the Momentum Effect

      By: Marco Sammon, Cheng (Patrick) Luo, Enrichetta Ravina and Luis M. Viceira
      We study the role of retail investors in the gradual diffusion of information in financial markets. We show that retail investors tend to trade as contrarians after large earnings surprises, and such contrarian trading contributes to sluggish price adjustment and to...  View Details
      Keywords: Retail Investors; Momentum; Earnings Surprises; Investment; Behavior; Information; Financial Markets
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      Sammon, Marco, Cheng (Patrick) Luo, Enrichetta Ravina, and Luis M. Viceira. "Retail Investors' Contrarian Behavior Around Earnings, Attention, and the Momentum Effect." Working Paper, November 2020.
      • 2022
      • Working Paper

      The Stock Market Value of Human Capital Creation

      By: Matthias Regier and Ethan Rouen
      We develop a measure of firm-year-specific human capital investment from publicly disclosed personnel expenses (PE) and examine the stock market valuation of this investment. Measuring the future value of PE (PEFV) based on the relation between lagged...  View Details
      Keywords: Intangibles; Market Valuation; Human Capital; Stocks; Financial Markets; Valuation
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      Regier, Matthias, and Ethan Rouen. "The Stock Market Value of Human Capital Creation." Harvard Business School Working Paper, No. 21-047, October 2020. (Revised March 2022.)
      • September 2020
      • Teaching Note

      TransDigm in 2017: The Beginning of the End or the End of the Beginning?

      By: Benjamin C. Esty and Daniel Fisher
      Teaching Note for HBS Case No. 720-422. TransDigm was a highly acquisitive company that manufactured a wide range of highly engineered aerospace parts for both military and commercial customers. Over the ten years ending in 2016, its stock price had increase ten times,...  View Details
      Keywords: Value Capturing; Pricing Strategy; Supplier Power; Buyer Power; Porter's Five Forces; Bargaining Power; Monopoly; Aerospace; Acquisition Strategy; Value Drivers; Ethical Behavior; Regulation; Growth Strategy; Business Ethics; Defense; Procurement; Sustainability; Value-Based Business Strategy; Acquisition; Ethics; Private Equity; Financial Strategy; Growth Management; Performance Evaluation; Business Strategy; Competitive Strategy; Horizontal Integration; Value Creation; Competitive Advantage; Aerospace Industry; Air Transportation Industry; United States
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      Esty, Benjamin C., and Daniel Fisher. "TransDigm in 2017: The Beginning of the End or the End of the Beginning?" Harvard Business School Teaching Note 721-353, September 2020.
      • August 2020 (Revised May 2021)
      • Case

      PayPal: The Next Chapter

      By: Michael Porter, Mark Kramer and Annelena Lobb
      Can a social purpose and stakeholder capitalism confer a powerful competitive advantage in the age of COVID-19? For PayPal, the answer is yes. After spinning off from eBay in a 2015 IPO, the company declared its purpose as "democratizing financial services" by ensuring...  View Details
      Keywords: Mission and Purpose; Finance; Business and Stakeholder Relations; Social Entrepreneurship; Competitive Advantage; Financial Services Industry
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      Porter, Michael, Mark Kramer, and Annelena Lobb. "PayPal: The Next Chapter." Harvard Business School Case 721-378, August 2020. (Revised May 2021.)
      • August 2020 (Revised February 2021)
      • Case

      Luckin Coffee (A): Caffeine-fueled Growth?

      By: Ramon Casadesus-Masanell and Karen Elterman
      This case describes the founding of Chinese coffee chain Luckin Coffee in 2017 and its path to surpassing Starbucks as the largest coffee chain in China (by number of stores) in 2019. Unlike Starbucks stores, which were designed to be welcoming “third places” for...  View Details
      Keywords: Business Model; Business Earnings; Cost; Cost Management; Financial Statements; Financial Condition; Financial Management; Stocks; Profit; Revenue; Price; Food; Business History; Employment; Brands and Branding; Product Positioning; Marketing Strategy; Business Strategy; Expansion; Competitive Strategy; Food and Beverage Industry; Technology Industry; Asia; China
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      Casadesus-Masanell, Ramon, and Karen Elterman. "Luckin Coffee (A): Caffeine-fueled Growth?" Harvard Business School Case 721-370, August 2020. (Revised February 2021.)
      • August 2020
      • Supplement

      Luckin Coffee (B): Revelations of Fraud

      By: Ramon Casadesus-Masanell and Karen Elterman
      This case describes revelations of fraud at Luckin Coffee, beginning with an anonymous report in January 2020 and continuing with the company’s admission in April 2020 that it had inflated its revenues by 2.2 billion RMB ($310 million), almost half its reported...  View Details
      Keywords: Fraud; Corporate Misconduct; Business Earnings; Financial Statements; Financial Condition; Stocks; Financial Management; Profit; Revenue; Price; Food; Lawfulness; Crime and Corruption; Food and Beverage Industry; Technology Industry; Asia; China
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      Casadesus-Masanell, Ramon, and Karen Elterman. "Luckin Coffee (B): Revelations of Fraud." Harvard Business School Supplement 721-371, August 2020.
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