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  • 06 Feb 2018
  • News

The stock market goes off-road

    Christina R. Wing

    Christina Wing is a Senior Lecturer in the Technology and Operations Management Unit at Harvard Business School. Her research focuses on families in business, and she is the creator of Demystifying the Family Enterprise, a course that explores... View Details

    • April 2011 (Revised April 2011)
    • Module Note

    Investor Demand

    By: Robin Greenwood
    This conceptual note describes a series of cases on the investor demand approach to investment strategy and management. The cases demonstrate how and why securities market dislocations are driven by non-fundamental demand. I use the cases to progressively build a... View Details
    Keywords: Investment
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    • 28 Oct 2014
    • News

    With midterm losses looming, what's left of Obama's power?

    • April 2020 (Revised April 2023)
    • Case

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

    By: Benjamin C. Esty and Daniel Fisher
    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 increased ten times, and both EBITDA and revenues had grown... View Details
    Keywords: Value Capturing; Pricing Strategy; Supplier Power; Buyer Power; Porter's Five Forces; Bargaining Power; 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; Monopoly; Aerospace Industry; Air Transportation Industry; United States
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      Celia Stafford

      Celia Stafford is a doctoral student in Health Policy (Management). She received a B.A. in Mathematics and Economics from Emory University in 2017 and an MPH focused in Biostatistics from the University of North Carolina at Chapel Hill in 2020. She is also... View Details

      • July 2020
      • Case

      Amanda and Kristen: Mented Cosmetics

      By: Steven Rogers, Jeffrey J. Bussgang and Alterrell Mills
      The co-founders (Black HBS alumnae) of an e-commerce beauty startup explore the unmet needs within the beauty industry. This case study examines the entrepreneurial opportunities that come from identifying an underserved market, specifically within the Black community... View Details
      Keywords: Brands and Branding; Competition; Customers; Disruption; Disruptive Innovation; Distribution Channels; Entrepreneurship; Finance; Macroeconomics; Marketing; Marketing Channels; Marketing Communications; Marketing Strategy; Mission and Purpose; Organizational Culture; Product Design; Product Development; Product Positioning; Sales; Social Issues; Social Marketing; Business Startups; Strategic Planning; Strategy; Supply Chain Management; Venture Capital; Beauty and Cosmetics Industry; Advertising Industry; Public Relations Industry; Chemical Industry; Manufacturing Industry; Retail Industry; North and Central America; United States; New York (city, NY); New York (state, US)
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      • May 2025 (Revised May 2025)
      • Case

      Humana Commits to Value-Based Care

      By: V.G. Narayanan, Henry Eyring and David Lane
      In late 2023, CEO Bruce Broussard reviewed health insurer Humana’s transformation into a value-based care ecosystem. Under its CenterWell brand, the several millions of members in Humana Medicare Advantage plans now had access to Humana-provided primary care, home... View Details
      Keywords: Business Model; Business Units; Financing and Loans; Innovation Strategy; Growth and Development Strategy; Service Operations; Mergers and Acquisitions; Insurance; Health Care and Treatment; Partners and Partnerships; Health Industry; Insurance Industry; United States
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      • Research Summary

      Overview

      Ms. Fedyk's main research interests lie at the intersection of asset pricing and behavioral finance, with a particular focus on information and belief formation. Her job market paper is part of a broader research agenda on the way in which information is incorporated... View Details
      • Research Summary

      Do Measures of Financial Constraints Measure Financial Constraints?

      Financial constraints are fundamental to empirical research in finance and economics. In joint work with Alexander Ljunqvist, we propose two novel tests to evaluate how well measures of financial constraints actually capture constraints. We find that firms... View Details
      • Research Summary

      Overview

      Professor Begenau’s research agenda is directed at better understanding how financial markets work and how they affect the real economy. She uses quantitative analysis to build both prescriptive and descriptive models concerning financial risk in banking, and she also... View Details

        Lauren H. Cohen

        Lauren Cohen is the L.E. Simmons Professor in the Finance & Entrepreneurial Management Units at Harvard Business School and a Research Associate at the National Bureau of Economic Research. He is an Editor of the Review of Financial... View Details

        Keywords: asset management; brokerage; financial services; federal government; investment banking industry; state government

          Aiyesha Dey

          Aiyesha Dey has been part of the Accounting and Management unit at the Harvard Business School (HBS) since July 2017. She started her career as an accounting faulty at the Booth School of Business, University of Chicago, after which she joined the accounting group at... View Details
          • 2024
          • Working Paper

          How Real Is Hypothetical?: A High-Stakes Test of the Allais Paradox

          By: Uri Gneezy, Yoram Halevy, Brian Hall, Theo Offerman and Jeroen van de Ven
          Researchers in behavioral and experimental economics often argue that only incentive-compatible mechanisms can elicit effort and truthful responses from participants. Others argue that participants make less-biased decisions when the stakes are sufficiently high.... View Details
          Keywords: Research; Behavioral Finance; Economics; Behavior; Prejudice and Bias
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            Deborah M. Winshel

            Deborah Winshel is a Senior Lecturer in the General Management Unit of Harvard Business School.  She teaches several MBA required courses: Leadership and Organizational Behavior (LEAD), Leadership and Corporate Accountability and the Field Immersion course (2025 in... View Details

              Luis M. Viceira

              Luis M. Viceira is the George E. Bates Professor in the Finance Unit  and a Research Associate at the National Bureau of Economic Research. His research, course development, and teaching focus on the areas of investment management... View Details

              Keywords: banking; education industry; financial services; nonprofit industry; retail financial services
              • 05 Jul 2017
              • Research & Ideas

              Are Stockbrokers Illegally Leaking Confidential Information to Favored Clients?

              assistant professor in the Finance unit at Harvard Business School. “Furthermore, it might even be illegal.” Di Maggio is the author of the paper The Relevance of Broker Networks for Information Diffusion in the Stock Market, co-written... View Details
              Keywords: by Carmen Nobel; Financial Services
              • 14 Jun 2004
              • Research & Ideas

              The Big Money for Big Projects

              There is nothing small about the research practiced by Harvard Business School professor Benjamin Esty. He studies the financing of some of the largest projects in the world: the Eurotunnel, Hong Kong Disneyland, and the Airbus A380, to... View Details
              Keywords: by Ann Cullen; Financial Services
              • 08 Jan 2018
              • News

              Associate Professor John Beshears Wins TIAA Paul A. Samuelson Award

              • 27 Apr 2012
              • Working Paper Summaries

              Putting Integrity into Finance: A Purely Positive Approach

              Keywords: by Werner Erhard & Michael C. Jensen