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SECURITIES AND EXCHANGE COMMISSION: (SEC) A federal government agency that regulates the trading of corporate stock to protect investors against unscrupulous practices. Like a number of other federal regulatory agencies, the SEC was established in the 1930s--1934 to be exact. The impetus for its formation was to prevent investors from manipulating the stock market and to prevent other practices that contributed to the 1929 stock market crash. The SEC has all sorts of rules governing the stock market, including information disclosure, insider trading, speculation, and use of credit.

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CONCENTRATION RATIOS

A family of measures of the proportion of total output in an industry that is produced by a given number of the largest firms in the industry. The two most common concentration ratios are for the four largest firms and the eight largest firms. The four-firm concentration ratio is the proportion of total output produced by the four largest firms in the industry and the eight-firm concentration ratio is proportion of total output produced by the eight largest firms in the industry. Concentration ratios are commonly used to indicate the degree to which an industry is oligopolistic and the extent of market control of the largest firms in the industry. A related measure is the Herfindahl index.

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Today, you are likely to spend a great deal of time watching the shopping channel wanting to buy either an AC adapter that works with your MPG player or rechargeable batteries. Be on the lookout for attractive cable television service repair people.
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A thousand years before metal coins were developed, clay tablet "checks" were used as money by the Babylonians.
"Think not of yourself as the architect of your career but as the sculptor. Expect to have to do a lot of hard hammering and chiseling and scraping and polishing. "

-- B. C. Forbes, founder, Forbes magazine

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