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HHI: The common abbreviation for the Herfindahl-Hirshman index (or the Herfindahl index), which is a measure of concentration of the production in an industry that's calculated as the sum of the squares of market shares for each firm. This is an alternative method of summarizing the degree to which an industry is oligopolistic and the relative concentration of market power held by the largest firms in the industry. The Herfindahl index gives a better indication of the relative market control of the largest firms than can be found with the four-firm and eight-firm concentration ratios.

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AGGREGATE MARKET

An economic model relating the price level and real production that is used to analyze business cycles, gross production, unemployment, inflation, stabilization policies, and related macroeconomic phenomena. The aggregate market, inspired by the standard market model, but adapted to the macroeconomy, captures the interaction between aggregate demand (the buyers) and short-run and long-run aggregate supply (the sellers). Also known by the names AS-AD model or income-price model, the aggregate market is THE cornerstone model of macroeconomic analysis.

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BROWN PRAGMATOX
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Today, you are likely to spend a great deal of time strolling through a department store hoping to buy either decorative garden figurines or a wall poster commemorating last Friday (you know why). Be on the lookout for high interest rates.
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This isn't me! What am I?

The standard "debt" notation I.O.U. does not mean "I owe you," but actually stands for "I owe unto..."
"Every man must decide whether he will walk in the light of creative altruism or in the darkness of destructive selfishness."

-- Martin Luther King, Jr., clergyman

AFBD
Association of Futures Brokers and Dealers (UK)
A PEDestrian's Guide
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