Herfindahl-Hirschman Index - Publications - Faculty & Research

2013
Article

How Concentrated Is the U.S. Advertising and Marketing Services Industry? Myth vs. Reality

By: Alvin J. Silk and Charles King III

We analyze changes in concentration levels in the U.S. Advertising and Marketing Services industry using data from the U.S. Census Bureau's quinquennial Economic Census and the Service Annual Survey. These data, heretofore largely ignored, allow us to redress some of... View Details

Keywords: Concentration Levels; Data; U.S. Census Bureau’s Quinquennial Economic Census And The Service Annual Survey; Measurement Problems; Herfindahl-Hirschman Index; Concentration Ratios; Advertising; Advertising Industry; North and Central America

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2008
Working Paper

Concentration Levels in the U.S. Advertising and Marketing Services Industry: Myth vs. Reality

By: Alvin J. Silk and Charles King III

This paper analyzes changes in concentration levels in the U.S. Advertising and Marketing Services (A&MS) industry using publicly released data that have been largely ignored in past discussions of the industrial organization of this industry, namely those available... View Details

Keywords: Advertising; Mergers and Acquisitions; Revenue; Analytics and Data Science; Surveys; Marketing; Measurement and Metrics; Rank and Position; Competition; Advertising Industry; Service Industry; United States

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20 Nov 2012
First Look

First Look: November 20

found in the existing literature. The data available permitted concentration levels to be tracked for the period 1977-2007 in the case of advertising agencies and for 1997, 2002, and 2007 for the other industry sectors. Firm level concentration, as measured by the... View Details

Keywords: Sean Silverthorne

07 Oct 2008
First Look

First Look: October 7, 2008

First, in the case of the core and largest sector, Advertising Agencies, firm-level concentration as measured by Herfindahl-Hirschman Index (HHI) increased slightly but remained relatively low from... View Details

Keywords: Martha Lagace

08 Jun 2010
First Look

First Look: June 8

U.S. Census Bureau's quinquennial Economic Census and the Service Annual Survey. These data, heretofore largely ignored, allow us to redress some of the measurement problems surrounding estimates found in the existing literature. Firm level concentration, as measured... View Details