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Stock market is more concentrated than ever, raising risksHow it works: One generally accepted way of measuring concentration is to look at the Herfindahl-Hirschman Index, or HHI, more familiar from its use in antitrust enforcement. HHI takes a sum-of ...
The index with a value between 0 and 1 shows the degree of geographical concentration of the international goods trade. It is also known as the Herfindahl-Hirschman Index (HHI). The index is ...
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