In: Economics
[Industry Competition]
Assume that there are only four companies in the ‘Petroleum Refining’ industry. Table below shows their sales information.
year x | Chevron | Exxon Mobil | Royal Dutch Shell | BP | Total |
Annual Sales | $241.91B | $482.30B | $481.70B | $388.29B | $1594.2B |
Market Shares | 15.2% | 30.3% | 30.2% | 24.4% |
To understand market concentration, calculate Hirschman-Herfindahl Index of this industry. Show the process how you calculate HHI.
Note: 15.2% = 0.152, Your answer should be between 0 and 1. Round off your answer to the second decimal (ex: 0.1256 = 0.13).
Assume that there are only four companies in the ‘Wireless telecom’ industry.
year x | Verizon | AT&T | T-mobile | Sprint | Total |
Annual Sales | $115.85B | $127.43B | $19.16B | $35.35B | $297.79B |
Market Shares | 39% | 43% | 6% | 12% |
HHI of Wireless telecom industry is 0.35. So which industry is more competitive?
Group of answer choices
-Petroleum Refining industry
-Wireless telecom industry
Industry - Petroleum Refining
Market share of Chevron = 15.2% or 0.152
Market share of Exxon Mobil = 30.3% or 0.303
Market share of Royal Dutch Shell = 30.2% or 0.302
Market share of BP = 24.4% or 0.244
Calculate the HHI of Petroleum refining industry -
HHI = [Market share of Chevron]2 + [Market share of Exxon Mobil]2 + [Market share of Royal Dutch Shell]2 + [Market share of BP]2
HHI = [0.152]2 + [0.303]2 + [0.302]2 + [0.244]2
HHI = 0.023104 + 0.091809 + 0.091204 + 0.059536
HHI = 0.265653
HHI = 0.27
The HHI of Petroleum Refining Industry is 0.27
Industry - Wireless Telecom
Market share of Verizon = 39% or 0.39
Market share of AT&T = 43% or 0.43
Market share of T-mobile = 6% or 0.06
Market share of Sprint = 12% or 0.12
Calculate the HHI of Wireless Telecom Industry -
HHI = [Market share of Verizon]2 + [Market share of AT&T]2 + [Market share of T-mobile]2 + [Market share of Sprint]2
HHI = [0.39]2 + [0.43]2 + [0.06]2 + [0.12]2
HHI = 0.1521 + 0.1849 + 0.0036 + 0.0144
HHI = 0.35
The HHI of Wireless Telecom Industry is 0.35
Lower value of the HHI of the industry, more competitive is the industry.
The HHI of Petroleum Refining Industry is lower.
Thus,
Petroleumm Refining Industry is more competitive.