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Strategy

See the latest research, articles and faculty on the Strategy Area of Expertise at Columbia Business School.

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Strategy Faculty

CBS Faculty Research on Strategy

How useful are aggregate measures of systemic risk?

Authors
Harry Mamaysky
Date
January 1, 2016
Format
Journal Article
Journal
Journal of Alternative Investments

Following the financial crisis of 2008–2009, a large literature has emerged that attempts to quantify and measure systemic risk. In this paper we focus on some of the more popular systemic risk indicators from this literature and ask how well they work, in the following sense: At the aggregate level, what information above that which is readily observable in the market do we learn from these systemic risk indicators?

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Who Owns the World’s Media? Media Concentration and Ownership around the World

Authors
Eli Noam
Date
January 1, 2016
Format
Book
Publisher
Oxford University Press

Media concentration has been an issue around the world. To some observers the power of large corporations has never been higher. To others, the Internet has brought openness and diversity. What perspective is correct? The answer has significant implications for politics, business, culture, regulation, and innovation. It addresses a highly contentious subject of public debate in many countries around the world. In this discussion, one side fears the emergence of media empires that can sway public opinion and endanger democracy.

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Agency Selling or Reselling? Channel Structures in Electronic Retailing

Authors
Kinshuk Jerath, Vibhanshu Abhishek, and Z. John Zhang
Date
January 1, 2016
Format
Journal Article
Journal
Management Science

In recent years, online retailers (also called e-tailers) have started allowing manufacturers direct access to their customers while charging a fee for providing this access, a format commonly referred to as agency selling. In this paper, we use a stylized theoretical model to answer a key question that e-tailers are facing: When should they use an agency selling format instead of using the more conventional reselling format?

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Recent Advances in Research on Hedge Fund Activism: Value Creation and Identification

Authors
Alon Brav, Wei Jiang, and Hyunseob Kim
Date
December 1, 2015
Format
Journal Article
Journal
Annual Review of Financial Economics

Hedge fund activism emerged as a major force of corporate governance in the 2000s. By the mid-2000s, there were between 150 and 200 activist hedge funds in action each year, advocating for changes in 200–300 publicly listed companies in the United States. In this article, we review the evolution and major characteristics of hedge fund activism, as well as the short- and long-term impacts of the performance and governance of targeted companies.

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Asset Quality Misrepresentation by Financial Intermediaries: Evidence from the RMBS Market

Authors
Tomasz Piskorski, Amit Seru, and James Witkin
Date
December 1, 2015
Format
Journal Article
Journal
Journal of Finance

We document that contractual disclosures by intermediaries during the sale of mortgages contained false information about the borrower's housing equity in 7–14% of loans. The rate of misrepresented loan default was 70% higher than for similar loans. These misrepresentations likely occurred late in the intermediation and exist among securities sold by all reputable intermediaries. Investors — including large institutions — holding securities with misrepresented collateral suffered severe losses due to loan defaults, price declines, and ratings downgrades.

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Affect as an Ordinal System of Utility Assessment

Authors
Michel Tuan Pham, Ali Faraji-Rad, Olivier Toubia, and Leonard Lee
Date
November 1, 2015
Format
Journal Article
Journal
Organizational Behavior and Human Decision Processes

Is the perceived value of things an absolute measurable quantity, as in economists’ notion of “cardinal utility,” or a relative assessment of the various objects being evaluated, as in economists’ notion of “ordinal utility”? We believe that the answer depends in part upon which judgment system underlies the evaluation. Specifically, we advance the proposition that due to its distant evolutionary roots, the affective system of judgment is inherently more ordinal (less cardinal) than the cognitive system.

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The Real Effects of Hedge Fund Activism: Productivity, Asset Allocation, and Labor Outcomes

Authors
Alon Brav, Wei Jiang, and Hyunseob Kim
Date
October 1, 2015
Format
Journal Article
Journal
Review of Financial Studies

This paper studies the long-term effect of hedge fund activism on the productivity of target firms using plant-level information from the U.S. Census Bureau. A typical target firm improves its production efficiency within three years after the intervention, and this improvement is pronounced in industries with low concentration. By following plants that were sold post-intervention we also find that efficient capital redeployment is an important channel via which activists create value.

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The New "Wave" in Studying Asian Consumers and Markets

Authors
Bernd Schmitt
Date
September 1, 2015
Format
Journal Article
Journal
Marketing Letters

I view the research articles presented here as prototypical examples of what may be called “the new wave” in studying Asian markets and consumers. This emerging “new wave” has a different focus than research done over the last few decades. Research is shifting from an emphasis on traditional Asian culture toward a focus on consumer culture and how this consumer culture manifests itself in various Asian markets. The “new wave” research also focuses less on general concepts and more on uniquely Asian phenomena. Finally, methodologically research is shifting from “East” vs.

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The Long-Term Effects of Hedge Fund Activism

Authors
Lucian Bebchuk, Alon Brav, and Wei Jiang
Date
June 15, 2015
Format
Journal Article
Journal
Columbia Law Review

We test the empirical validity of a claim that has been playing a central role in debates on corporate governance — the claim that interventions by activist hedge funds have a detrimental effect on the long-term interests of companies and their shareholders. We subject this claim to a comprehensive empirical investigation, examining a long five-year window following activist interventions, and we find that the claim is not supported by the data.

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