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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]
The following table lists the largest biotechnology and pharmaceutical companies ranked by market capitalization in billion US dollars. The change column indicates the company's relative position in this list compared to their relative position in the preceding year; i.e., an increase would be moving closer to rank 1 and vice versa.
Sigma-Aldrich was created in 1975 by the merger of Sigma Chemical Company and Aldrich Chemical Company. It grew through various acquisitions until it had over 9,600 employees and was listed on the Fortune 1000. The company has two United States headquarters, in St. Louis and Burlington, MA and has operations in approximately 40 countries. [7]
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The first companies that formed the Illinois Technology and Research Corridor began locating in Naperville in the 1960s. In 1962, Northern Illinois Gas (now Nicor ) moved its research and administrative facilities to Naperville in 1962, followed by Bell Laboratories (1964), and the Amoco Research Center (now BP ) in 1969.
The Fortune 500 is a much-lauded list of the America's biggest companies. Qualification is solely based on a company's revenues. The 2022 edition is the 68th in its history. Holiday Spending: Get ...
This is a list of Illinois companies which includes notable companies that are headquartered in Illinois, or were previously headquartered in Illinois. In general, this list does not include companies headquartered in one of the municipalities of the Chicago metropolitan area .
Pages in category "Companies based in Chicago" The following 200 pages are in this category, out of approximately 441 total. This list may not reflect recent changes .