There are 7 firms in an industry. Firms 1 and 2 each have a 20% share and the other 6 firms each have a 7.5% share. Firms 7 and 8 decide to merge.   (i) Calculate the pre-merger and post-merger Herfindahl-Hirschman Index (HHI).  (ii) Use the table below to evaluate the likelihood of an antitrust challenge.      HHI Concentration Level and Possible Government Action   Post-Merger HHI Concentration Change in HHI Government Action Less than 1,000 Not concentrated Any amount No action Between 1,000 and 1,800 Moderately concentrated 100 or more Possible challenge More than 1,800   Highly concentrated 50 or more Challenge

EBK CONTEMPORARY FINANCIAL MANAGEMENT
14th Edition
ISBN:9781337514835
Author:MOYER
Publisher:MOYER
Chapter23: Corporate Restructuring
Section: Chapter Questions
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There are 7 firms in an industry. Firms 1 and 2 each have a 20% share and the other 6 firms each have a 7.5% share. Firms 7 and 8 decide to merge.

 

(i) Calculate the pre-merger and post-merger Herfindahl-Hirschman Index (HHI). 

(ii) Use the table below to evaluate the likelihood of an antitrust challenge. 

 

 

HHI Concentration Level and Possible Government Action

 

Post-Merger HHI

Concentration

Change in HHI

Government Action

Less than 1,000

Not concentrated

Any amount

No action

Between 1,000 and 1,800

Moderately concentrated

100 or more

Possible challenge

More than 1,800

  Highly concentrated

50 or more

Challenge

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