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    • All HBS Web  (506)
      • Faculty Publications  (70)

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      • 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
      Keywords: Generative Ai; Seeking Alpha; Equity Research; Large Language Models; Gpt; AI and Machine Learning; Information Publishing; Financial Markets
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      Bradshaw, Mark, Chenyang Ma, Benjamin Yost, and Yuan Zou. "Generative AI Use by Capital Market Information Intermediaries: Evidence from Seeking Alpha." Harvard Business School Working Paper, No. 25-055, April 2025.
      • 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
      Keywords: Asset Management; Financial Strategy; Investment Funds; Investment Portfolio; Financial Services Industry
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      Sammon, Marco, Luis M. Viceira, and Jonathan Kanagasabai. "Index and Active Investing: Vanguard and the New Frontier of Active ETFs." Harvard Business School Case 225-056, January 2025.
      • March 2024
      • Case

      Funderbeam: Teaming Up or Going Alone?

      By: Paul A. Gompers, Elena Corsi and Orna Dan
      Funderbeam, a global platform founded in Estonia to enable start-ups to run private syndications and secondaries while offering liquidity for private equity investors, was at a crossroads. Over its ten-year run, the company had expanded its services and areas of... View Details
      Keywords: Decision Making; Business Exit or Shutdown; Transition; Leading Change; Business or Company Management; Organizational Change and Adaptation; Law; Mergers and Acquisitions; Financing and Loans; Cross-Cultural and Cross-Border Issues; Ownership Stake; Expansion; Business Startups; Venture Capital; Financial Services Industry; Estonia; Republic of Ireland; United Kingdom; Singapore
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      Gompers, Paul A., Elena Corsi, and Orna Dan. "Funderbeam: Teaming Up or Going Alone?" Harvard Business School Case 224-076, March 2024.
      • 2024
      • Article

      Half the Firms, Double the Profits: Public Firms' Transformation, 1996–2022

      By: Mark J. Roe and Charles C.Y. Wang
      The number of public firms in the United States has halved since the beginning of the twenty-first century, causing consternation among corporate and securities law regulators. The dominant explanations, often advanced by Securities and Exchange commissioners when... View Details
      Keywords: Corporate Law; Securities Regulation; Sarbanes-Oxley Act; Concentration Levels; Antitrust; Initial Public Offering; Public Ownership; Private Equity; Venture Capital; Mergers and Acquisitions; Monopoly; United States
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      Roe, Mark J., and Charles C.Y. Wang. "Half the Firms, Double the Profits: Public Firms' Transformation, 1996–2022." Journal of Law, Finance, and Accounting 8, no. 2 (2024): 211–264.
      • 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
      Keywords: Institutional Investing; Financial Markets; Price; Financial Instruments
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      van der Beck, Philippe, and Coralie Jaunin. "The Equity Market Implications of the Retail Investment Boom." Swiss Finance Institute Research Paper Series, No. 21-12, November 2023.
      • 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
      Keywords: Technology; M&A; Recapitalization; MBO; Equity Issues; Private Equity Buyouts; Public Ownership; Stock Shares; Mergers and Acquisitions; Equity; Technology Industry; United States
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      Gilson, Stuart C., and Sarah L. Abbott. "Equity Restructuring at Dell Technologies: Buy Out, Buy Up, Buy In (A)." Harvard Business School Case 224-005, July 2023. (Revised February 2024.)
      • Article

      The Value of Intermediation in the Stock Market

      By: Marco Di Maggio, Mark Egan and Francesco Franzoni
      We estimate a structural model of broker choice to quantitatively decompose the value that institutional investors attach to broker services. Studying over 300 million institutional equity trades, we find that investors are sensitive to both explicit and implicit... View Details
      Keywords: Financial Intermediation; Institutional Investors; Research Analysts; Broker Networks; Equity Trading; Institutional Investing
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      Di Maggio, Marco, Mark Egan, and Francesco Franzoni. "The Value of Intermediation in the Stock Market." Journal of Financial Economics 145, no. 2A (August 2022): 208–233.
      • February 2022
      • Supplement

      SpartanNash Company: The Amazon Warrants (A)

      By: Benjamin C. Esty, E. Scott Mayfield and Daniel Fisher
      As of 12/31/21, Amazon held $22 billion of equity and warrants in related companies. In fact, it often requests a free grant of warrants when it enters into a new commercial agreement with a supplier. Over the past 20 years, Amazon has gotten warrants almost 20... View Details
      Keywords: Valuation; Value Creation; Consumer Behavior; Negotiation; Distribution; Ownership; Partners and Partnerships; Business Strategy; Equity; Distribution Industry; Food and Beverage Industry; United States
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      Esty, Benjamin C., E. Scott Mayfield, and Daniel Fisher. "SpartanNash Company: The Amazon Warrants (A)." Harvard Business School Spreadsheet Supplement 222-704, February 2022.
      • January 2022
      • Supplement

      Kornit Digital: The Amazon Warrants (C)

      By: Benjamin C. Esty, E. Scott Mayfield and Daniel Fisher
      As of 12/31/21, Amazon held $22 billion of equity and warrants in related companies. In fact, it often requests a free grant of warrants when it enters into a new commercial agreement with a supplier. Over the past 20 years, Amazon has gotten warrants almost 20... View Details
      Keywords: Valuation; Value Creation; Consumer Behavior; Negotiation; Distribution; Ownership; Partners and Partnerships; Business Strategy; Equity; Distribution Industry; Food and Beverage Industry; United States
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      Esty, Benjamin C., E. Scott Mayfield, and Daniel Fisher. "Kornit Digital: The Amazon Warrants (C)." Harvard Business School Supplement 222-045, January 2022.
      • January 2022
      • Case

      SpartanNash Company: The Amazon Warrants (A)

      By: Benjamin C. Esty, E. Scott Mayfield and Daniel Fisher
      As of 12/31/21, Amazon held $22 billion of equity and warrants in related companies. In fact, it often requests a free grant of warrants when it enters into a new commercial agreement with a supplier. Over the past 20 years, Amazon has gotten warrants in almost 20... View Details
      Keywords: Valuation; Value Creation; Consumer Behavior; Negotiation; Distribution; Ownership; Partners and Partnerships; Business Strategy; Equity; Distribution Industry; Food and Beverage Industry; United States
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      Esty, Benjamin C., E. Scott Mayfield, and Daniel Fisher. "SpartanNash Company: The Amazon Warrants (A)." Harvard Business School Case 222-022, January 2022.
      • January 2022
      • Article

      Replicating Private Equity with Value Investing, Homemade Leverage, and Hold-to-Maturity Accounting

      By: Erik Stafford
      The contributions of asset selection and incremental leverage to buyout investment performance are more important than typically assumed or estimated to be. Buyout funds select small firms with distinct value characteristics. Public equities with these characteristics... View Details
      Keywords: Replicating Portfolio; Private Equity; Investment Portfolio
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      Stafford, Erik. "Replicating Private Equity with Value Investing, Homemade Leverage, and Hold-to-Maturity Accounting." Review of Financial Studies 35, no. 1 (January 2022): 299–342.
      • Article

      Core Earnings: New Data and Evidence

      By: Ethan Rouen, Eric C. So and Charles C.Y. Wang
      Using a novel dataset, we show that components of firms' GAAP earnings stemming from ancillary business activities or transitory shocks are significant in frequency and magnitude. These components have grown over time and are dispersed across various sections of the... View Details
      Keywords: Core Earnings; Transitory Earnings; Non-operating Earnings; Quantitative Disclosures; Equity Valuation; Big Data; Business Earnings; Financial Reporting; Valuation; Analytics and Data Science
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      Rouen, Ethan, Eric C. So, and Charles C.Y. Wang. "Core Earnings: New Data and Evidence." Journal of Financial Economics 142, no. 3 (December 2021): 1068–1091.
      • September 2021
      • Case

      Brown Capital Management

      By: Luis M. Viceira, Emily R. McComb and Sarah Mehta
      Set in July 2021, this case looks at several growth strategies under consideration at Brown Capital, the second-oldest Black-owned asset management firm in the U.S. Since its 1983 founding, Baltimore-based Brown Capital has specialized in small company growth... View Details
      Keywords: Business Growth and Maturation; Growth and Development Strategy; Diversity; Race; Finance; Equity; Public Equity; Stocks; Financial Management; Financial Strategy; Investment; Investment Portfolio; Employee Stock Ownership Plan; Recruitment; Retention; Selection and Staffing; Employee Ownership; Strategy; Financial Services Industry; United States; Maryland; Baltimore
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      Viceira, Luis M., Emily R. McComb, and Sarah Mehta. "Brown Capital Management." Harvard Business School Case 222-002, September 2021.
      • 2019
      • Article

      Time Series Experiments and Causal Estimands: Exact Randomization Tests and Trading

      By: Iavor I Bojinov and Neil Shephard
      We define causal estimands for experiments on single time series, extending the potential outcome framework to dealing with temporal data. Our approach allows the estimation of a broad class of these estimands and exact randomization based p-values for testing causal... View Details
      Keywords: Causality; Nonparametric; Potential Outcomes; Trading Costs; Mathematical Methods
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      Bojinov, Iavor I., and Neil Shephard. "Time Series Experiments and Causal Estimands: Exact Randomization Tests and Trading." Journal of the American Statistical Association 114, no. 528 (2019): 1665–1682.
      • 2021
      • Working Paper

      The Value of Intermediation in the Stock Market

      By: Marco Di Maggio, Mark Egan and Francesco Franzoni
      We estimate a structural model of broker choice to quantitatively decompose the value that institutional investors attach to broker services. Studying over 300 million institutional equity trades, we find that investors are sensitive to both explicit and implicit... View Details
      Keywords: Financial Intermediation; Institutional Investors; Research Analysts; Broker Networks; Equity Trading; Institutional Investing; Financial Services Industry
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      Di Maggio, Marco, Mark Egan, and Francesco Franzoni. "The Value of Intermediation in the Stock Market." Harvard Business School Working Paper, No. 20-016, August 2019. (Revised June 2021. Accepted at the Journal of Financial Economics.)
      • June 2019
      • Case

      ClearLife: From Prospect to Platform

      By: Alexander Braun, Lauren Cohen, Mauro Elvedi and Jiahua Xu
      ClearLife’s first product was a trading and analytics platform for participants in the U.S. life settlement market, the secondary market for life insurance. ClearLife played a key role in facilitating transactions and devising a common language for expressing value and... View Details
      Keywords: Digital Platforms; Insurance; Entrepreneurship; Expansion; Diversification; Strategy
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      Braun, Alexander, Lauren Cohen, Mauro Elvedi, and Jiahua Xu. "ClearLife: From Prospect to Platform." Harvard Business School Case 219-119, June 2019.
      • May 2019
      • Teaching Note

      Tesla, Inc. in 2018

      By: Siko Sikochi and Suraj Srinivasan
      Teaching Note for HBS No. 119-013. The case facilitates a discussion about corporate governance and its role in achieving sustainable profitability and driving long-term shareholder value. The discussion can focus on such questions as what constitutes good governance,... View Details
      Keywords: Public Company; Corporate Governance; Governing and Advisory Boards; Cost vs Benefits
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      Sikochi, Siko, and Suraj Srinivasan. "Tesla, Inc. in 2018." Harvard Business School Teaching Note 119-101, May 2019.
      • February 2019 (Revised November 2023)
      • Case

      Rent-a-Center/Vintage Capital

      By: Guhan Subramanian and Caeden Brynie
      Christopher Korst, General Counsel for Rent-A-Center (RAC), looked at the time. It was late in the evening on December 17, 2018, yet no notice of extension had come from Vintage Capital. In June, Vintage had agreed to buy RAC for $15 per share in cash, amounting to... View Details
      Keywords: Negotiation; Communication; Decision Making
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      Subramanian, Guhan, and Caeden Brynie. "Rent-a-Center/Vintage Capital." Harvard Business School Case 919-031, February 2019. (Revised November 2023.)
      • November 2018
      • Teaching Note

      The Tax Man: Taxes in Private Equity Real Estate

      By: Nori Gerardo Lietz and Sayiddah Fatima McCree
      Teaching Note for HBS No. 218-077. This teaching note provides the back up analysis for the various alternatives to be considered in choosing the optimal investment structure for the real estate acquisition. It contrasts the interests of the tax exempt investors... View Details
      Keywords: Real Estate; Alternative Investment Structures; Taxation; Private Equity; Property; Acquisition; Conflict of Interests; Governing Rules, Regulations, and Reforms
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      Lietz, Nori Gerardo, and Sayiddah Fatima McCree. "The Tax Man: Taxes in Private Equity Real Estate." Harvard Business School Teaching Note 219-017, November 2018.
      • April 2018
      • Supplement

      Celgene

      By: Malcolm Baker and Emily R. McComb
      In February 2011, Adam Koppel, a Managing Director at Brookside Capital, the public equity arm of Bain Capital, must decide whether to increase or exit the firm’s position in Celgene Corporation. News has emerged that raises potential safety concerns associated with... View Details
      Keywords: Life Sciences; Biotechnology; Public Market Investing; Celgene; Revlimid; Hedge Fund; Growth Stocks; Valuation; Investment; Decision Choices and Conditions; Analysis
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      Baker, Malcolm, and Emily R. McComb. "Celgene." Harvard Business School Spreadsheet Supplement 218-743, April 2018.
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