Glossary
Catchment area
A catchment area is the geographic perimeter within which a store or transaction effectively meets local demand.
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Glossary
Expert glossary for retail merger control.
Short, usable and citable definitions for local-market analysis: market share, HHI, delta HHI, safe harbor, catchment area and relevant market.
Glossary
Delta HHI
Delta HHI measures the increase in concentration attributable to the deal by comparing HHI before and after the transaction.
Open definition
Glossary
HHI
HHI, or Herfindahl-Hirschman Index, measures market concentration by summing squared market shares.
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Glossary
Local market share
A local market share measures the relative weight of a retailer or group within a defined catchment area or local market.
Open definition
Glossary
Local relevant market
A local relevant market is the geographic and competitive perimeter within which a transaction should be assessed to measure actual competitive pressure.
Open definition
Glossary
Safe harbor
Safe harbor refers to indicative thresholds used to identify transactions that are likely to raise limited concentration concerns.
Open definition
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