If instead of one major pharmaceutical company there are four major ones with the following sales numbers:
a. Chemo 6,000
b. Mercy Me Drugs 5,000
c. Cancer Free 4,500
d. d. Healthy Again 2000
Find the CR2 and HHI.
(1) Concentration ratio of 2 firms
Two biggest firms Chemo and Mercy me drugs
Total sales of above two firms = 6,000 + 5,000 = 11,000
Total industry sales = 6,000 + 5,000 + 4,500 + 2,000 = 17,500
Concentration ratio = 11,000 / 17,500 = 0.629
Hence CR 2 is 0.629
CR2 means concentration ratio of 2 firms.
(2) HHI = S12 + S22 + S32 + S42
Market share = sales of company / Total sales × 100
Total market share = 6,000 + 5,000 + 4,500 + 2,000 = 17,500
a) Chemo = 6,000 / 17500 × 100 = 34.29%
b) Mercy Me Drugs = 5,000 / 17500 × 100 = 28.57%
c) Cancer free = 4500 / 17500 × 100 = 25.71%
d) Healthy again = 2000 / 17500 × 100 = 11.43%
HHI = (34.29%)2 + (28.57%)2 + (25.71%)2 + (11.43%)2
= 1175.80 + 816.24 + 661 + 130.64 = 2783.68
Herfindahl-Hirschman Index ( HHI ) = 2783.68
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