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  2. Economy of Chicago - Wikipedia

    en.wikipedia.org/wiki/Economy_of_Chicago

    While the city of Chicago houses most of the major brokerage firms in the area, some insurance companies are in the suburbs, such as Allstate Corporation. In the 2020 Global Financial Centres Index , Chicago was ranked as having the 20th most competitive financial center in the world and sixth-most competitive in the United States (after New ...

  3. Economy of Illinois - Wikipedia

    en.wikipedia.org/wiki/Economy_of_Illinois

    Chicago is also home to the largest futures exchange in the world, the Chicago Mercantile Exchange. Across the state, other Fortune 500 world headquarters based in Illinois include State Farm in Bloomington and John Deere in Moline. As of 2017, Illinois ranked fourth in the nation for the most Fortune 500 based companies with a total of 36. [8]

  4. List of companies in the Chicago metropolitan area - Wikipedia

    en.wikipedia.org/wiki/List_of_companies_in_the...

    This is a list of companies in the Chicago metropolitan area. The Chicago metropolitan area – also known as "Chicagoland" – is the metropolitan area associated with the city of Chicago , Illinois , and its suburbs. [ 2 ]

  5. Market concentration - Wikipedia

    en.wikipedia.org/wiki/Market_concentration

    A simple measure of market concentration is to calculate 1/N where N is the number of firms in the market. A result of 1 would indicate a pure monopoly, and will decrease with the number of active firms in the market, and nonincreasing in the degree of symmetry between them.

  6. Industrial organization - Wikipedia

    en.wikipedia.org/wiki/Industrial_organization

    In economics, industrial organization is a field that builds on the theory of the firm by examining the structure of (and, therefore, the boundaries between) firms and markets. Industrial organization adds real-world complications to the perfectly competitive model, complications such as transaction costs , [ 1 ] limited information , and ...

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  8. Concentration ratio - Wikipedia

    en.wikipedia.org/wiki/Concentration_ratio

    Perfect competition exists where an industry's concentration ratio is CR n = n/N, where N is the number of firms in the industry. That is, all firms have an equal market share. Low concentration – 40% A concentration ratio of close to 0% implies perfect competition at the least. This is only possible in an industry where there is a very large ...

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