Open Question
Calculate HHI in the following industries:
One firm with 100% market share
Two firms with 50% market share
Four firms with market shares of 30%, 30%, 20%, and 20%
Ten firms with 10% market share
12. Monopoly
Mergers and the Herfindahl-Hirschman Index (HHI)
Multiple Choice
Which of the following best describes the difference between mergers and acquisitions in the context of market structure analysis using the Herfindahl-Hirschman Index (HHI)?
A
Acquisitions result in the dissolution of both firms, while mergers allow both firms to continue operating independently.
B
A merger always decreases the HHI, while an acquisition always increases the HHI.
C
A merger combines two firms into a single new entity, potentially increasing HHI, while an acquisition involves one firm taking control of another, which may also affect HHI.
D
Mergers only occur between firms in different industries, while acquisitions occur within the same industry.
Verified step by step guidance1
Step 1: Understand the definitions of mergers and acquisitions. A merger is when two firms combine to form a single new entity, while an acquisition is when one firm takes control of another firm, which may continue to exist as a separate entity or be absorbed.
Step 2: Recall what the Herfindahl-Hirschman Index (HHI) measures. The HHI is a measure of market concentration calculated by summing the squares of the market shares of all firms in the market.
Step 3: Analyze how mergers and acquisitions affect the HHI. Since both involve combining market shares of firms, they generally increase market concentration and thus increase the HHI.
Step 4: Evaluate the given options based on these concepts. The correct description should reflect that a merger combines two firms into one, potentially increasing HHI, and an acquisition involves one firm taking control of another, which also affects HHI.
Step 5: Recognize that incorrect options either misunderstand the nature of mergers and acquisitions or incorrectly describe their effects on the HHI, such as stating mergers decrease HHI or that firms dissolve in acquisitions.
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