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December 18, 2025 

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AMERICAN STOCK EXCHANGE: One of three national stock markets in the United States (see National Association of Securities Dealers and New York Stock Exchange) that trade ownership shares in corporations. In terms of daily stock transactions and the number of stocks listed, the American Stock Exchange is the smallest of these three. However, it's composite index of stock prices -- AMEX is considered important enough to be flashed briefly on the nightly news.

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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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Today, you are likely to spend a great deal of time flipping through mail order catalogs hoping to buy either a black duffle bag with velcro closures or any book written by Isaac Asimov. Be on the lookout for malfunctioning pocket calculators.
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North Carolina supplied all the domestic gold coined for currency by the U.S. Mint in Philadelphia until 1828.
"In the business world, everyone is paid in two coins: cash and experience. Take the experience first; the cash will come later. "

-- Harold S. Green, MCI founder

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