6 firms makeup most of an industry and have the following market shares:
A 25
B 20
C 20
D 10
E 10
F 5
Firm C wants to acquire Firm F.
Calculate the Herfindahl-Hirschman Index (HHI), showing all work, given present market shares.
Calculate the Herfindahl-Hirschman Index (HHI), showing all work, assuming Firm C acquires Firm F.
Will the Department of Justice likely approve this acquisition?