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September 15, 2026 

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MACROECONOMY: The aggregate, or national economy that is the prime focus of the study of macroeconomics.

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OLIGOPOLY, CONCENTRATION

Oligopoly is a market structure that contains a small number of relatively large firms, meaning oligopoly markets tend to be concentrated. A small number of large firms account for a majority of total output. Concentration unto itself is not necessarily bad, but it often leads to inefficient behavior, such as collusion and nonprice competition. Concentration is measured in three ways--market share, concentration ratio, Herfindahl index.

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WHITE GULLIBON
[What's This?]

Today, you are likely to spend a great deal of time browsing about a thrift store hoping to buy either a birthday gift for your aunt or a pair of leather sandals that won't cause blisters. Be on the lookout for cardboard boxes.
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This isn't me! What am I?

Al Capone's business card said he was a used furniture dealer.
"Most human beings have an almost infinite capacity for taking things for granted. "

-- Aldous Huxley, writer

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National Association of Accountants
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