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Common Analysts: Method for Defining Peer Firms

Published online by Cambridge University Press:  06 July 2020

Markku Kaustia*
Affiliation:
Aalto University School of Business markku.kaustia@aalto.fi
Ville Rantala
Affiliation:
University of Miami Herbert Business School vrantala@bus.miami.edu
*
markku.kaustia@aalto.fi (corresponding author)

Abstract

We develop a method for defining groups of peer firms on the basis of joint analyst coverage. Besides industry boundaries, analysts’ coverage choices reflect other aspects of firm relatedness such as business model. We find that the analyst-based method produces substantially more homogeneous groups of firms compared to common industry classifications, and has a number of other desirable properties. The paper has two broader implications. First, it demonstrates the advantages of a self-organizing approach to classification, as opposed to a hierarchical system. Second, it illustrates a new positive information production externality generated by the institution of security market analysis.

Information

Type
Research Article
Copyright
© The Author(s), 2020. Published by Cambridge University Press on behalf of the Michael G. Foster School of Business, University of Washington

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Supplementary material: PDF

Kaustia and Rantala supplementary material

Kaustia and Rantala supplementary material

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