More from these Authors

• Article | Bloomberg Opinion

  People Make It So Hard to Ditch Plastic Straws

  Scott Duke Kominers

  Rarely has a minor consumer product received more vilification than the plastic straw. As a symbol of human wastefulness and our careless disregard for the environment, straws are the near-perfect villain. You use a plastic straw once and toss it, but it stays with us forever, sitting in a landfill, floating in the sea or harming wildlife.That's why some local governments like that of New York City have stopped allowing them, along with other single-use plastics. This seems like a perfectly reasonable thing to do, even though plastic straws comprise only a small part of the total volume of plastic disposed of each year.

  Citation:

  Kominers, Scott Duke. "People Make It So Hard to Ditch Plastic Straws." Bloomberg Opinion (July 15, 2019).  View Details

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• Case | HBS Case Collection | April 2019 (Revised July 2019)

  Aperture Investors

  Krishna G. Palepu, George Serafeim and David Lane

  Aperture Investors is a startup investment firm that seeks to disrupt the asset management industry through competitive differentiation by charging investors primarily when its portfolio managers outperform the marketplace. Headed by Wall Street veteran Peter Kraus and backed with substantial and patient seed capital, Aperture seeks to attract both star portfolio managers and assets from mutual funds and hedge funds. Kraus believes that his innovative business model addresses the current dysfunctional fee and incentive structures in the industry, which have led to long-term market underperformance, and that Aperture will address the reasons that are motivating investors to shift to cheaper, passively-managed index and exchange-traded funds.

  Keywords: Business Model; Talent and Talent Management; Investment; Investment Funds; Asset Management; Recruitment; Selection and Staffing; Marketing Channels; Emerging Markets; Partners and Partnerships; Motivation and Incentives; Financial Services Industry;

  Citation:

  Palepu, Krishna G., George Serafeim, and David Lane. "Aperture Investors." Harvard Business School Case 119-053, April 2019. (Revised July 2019.)  View Details

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• Working Paper | HBS Working Paper Series | 2019

  A Compact, Logical Approach to Large-Market Analysis

  Yannai A. Gonczarowski, Scott Duke Kominers and Ran I. Shorrer

  In game theory, we often use infinite models to represent "limit" settings, such as markets with a large number of agents or games with a long time horizon. Yet many game-theoretic models incorporate finiteness assumptions that, while introduced for simplicity, play a real role in the analysis. Here, we show how to extend key results from (finite) models of matching, games on graphs, and trading networks to infinite models by way of Logical Compactness, a core result from Propositional Logic. Using Compactness, we prove the existence of man-optimal stable matchings in infinite economies as well as strategy-proofness of the man-optimal stable matching mechanism. We then use Compactness to eliminate the need for a finite start time in a dynamic matching model. Finally, we use Compactness to prove the existence of both Nash equilibria in infinite games on graphs and Walrasian equilibria in infinite trading networks.

  Keywords: Markets; Analysis; Game Theory;

  Citation:

  Gonczarowski, Yannai A., Scott Duke Kominers, and Ran I. Shorrer. "A Compact, Logical Approach to Large-Market Analysis." Harvard Business School Working Paper, No. 19-127, June 2019.  View Details

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