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  2. Economy of Chicago - Wikipedia

    en.wikipedia.org/wiki/Economy_of_Chicago

    Chicago and its suburbs is home to 35 Fortune 500 companies and is a transportation and distribution center. Manufacturing , printing , publishing , insurance , transportation, financial trading and services, and food processing also play major roles in the city's economy.

  3. 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.

  4. 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]

  5. Herfindahl–Hirschman index - Wikipedia

    en.wikipedia.org/wiki/Herfindahl–Hirschman_index

    When firms have unequal shares, the reciprocal of the index indicates the "equivalent" number of firms in the industry. Using case 2, we find that the market structure is equivalent to having 1.55521 firms of the same size.

  6. Template : Publicly traded companies in the Chicago ...

    en.wikipedia.org/wiki/Template:Publicly_traded...

    Companies in the Chicago area. Source: Fortune 500 2017 [1] References This page was last edited on 29 September 2024, at 00:00 (UTC). Text is available ...

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

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

    The Chicago metropolitan area – also known as "Chicagoland" – is the metropolitan area associated with the city of Chicago, Illinois, and its suburbs. [2] With an estimated population of 9.4 million people, [ 3 ] it is the third largest metropolitan area in the United States [ 4 ] and the region most connected to the city through geographic ...

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. 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 ...