Directory Inc.

CDW Corporation, headquartered in Lincolnshire, Illinois, is a provider of technology products and services for business, government and education. The company has a secondary division known as CDW-G, devoted solely to United States governmental entities, such as K-12 schools, universities, non-profit healthcare organizations, State & Local and the Federal government.

Celgene Corporation is an American biotechnology company that discovers, develops and commercializes medicines for cancer and inflammatory disorders. It is incorporated in Delaware and headquartered in Summit, New Jersey. The company's major product is Revlimid (lenalidomide), in combination with dexamethasone for the treatment of multiple myeloma patients. Revlimid is also approved in the United States for the treatment of patients with transfusion-dependent anemia, due to Low- or Intermediate-1-risk Myelodysplastic syndromes (MDS) associated with a deletion 5q cytogenetic abnormality with or without additional cytogenetic abnormalities. Revlimid is sold through proprietary risk-management distribution programs, to ensure safe and appropriate use of these pharmaceuticals. Vidaza is approved for the treatment of patients with MDS. Celgene Cellular Therapeutics, a subsidiary, is a public cord blood bank.

CenterPoint Energy is a Fortune 500 electric and natural gas utility serving several markets in the U.S. states of Arkansas, Louisiana, Minnesota, Mississippi, Oklahoma, and Texas. It was formerly known as Reliant Energy (from which it is now separated), NorAm Energy, Houston Industries, and HL&P. The company is headquartered in the CenterPoint Energy Tower at 1111 Louisiana Street in Downtown Houston.[2][3] Some of its notable subscribers include Retail Electric Providers (REPs), such as NRG Energy, Champion Energy, Eligo Energy, Dynowatt, Ambit Energy, Texas Power, Bounce Energy, MXenergy, Direct Energy, Stream Energy, First Texas Energy Corporation, Gexa Energy, Cirro Energy, and Kona Energy.

CH2M HILL Companies, Ltd., also known as CH2M, was an engineering company that provided consulting, design, construction, and operations services for corporations and governments. The company was organized in Delaware and headquartered at 9191 South Jamaica Street, Englewood, Colorado.[1] In December 2017, the company was acquired by Jacobs Engineering Group. The company played a major role in the Panama Canal expansion project.[2] The company developed, maintained and published its own method for managing projects for clients, called the CH2M Hill Project Delivery System.[3] The firm was named from the initials of its four founders.

Charter Communications, Inc. is an American telecommunications and mass media company that offers its services to consumers and businesses under the branding of Spectrum. Providing services to over 26 million customers in 41 states,[1] it is the second-largest cable operator in the United States by subscribers, just behind Comcast, and third largest pay TV operator behind Comcast and AT&T.[4] It is the fifth largest telephone provider based upon residential subscriber line count. In late 2012, with the naming of longtime Cablevision executive Thomas Rutledge as their CEO, the company relocated its corporate headquarters from St. Louis, Missouri, to Stamford, Connecticut, although many operations still remain in St. Louis.[5] On May 18, 2016, Charter completed its acquisition of Time Warner Cable and its sister company Bright House Networks, making it the third-largest pay television service in the United States.[6][7][8] Charter ranked No. 74 in the 2018 Fortune 500 list of the largest United States corporations by total revenue.

Chesapeake Energy Corporation is a company engaged in hydrocarbon exploration. It is headquartered in Oklahoma City. The company is named after the founder's love for the Chesapeake Bay region. The company is ranked 314th on the Fortune 500.

Chick-fil-A is one of the largest American fast food chain restaurants and the largest restaurant company whose specialty is chicken sandwiches. The restaurant's other chicken entrees are also very popular among its clientele. Chick-fil-A was originally founded in 1946 as the "Dwarf Grill", later changing it's brand name to "Dwarf House" until ultimately rebranding as Chick-fil-A in the late 1960s. The company operates 2,400+ restaurants, primarily in the US with locations distributed across 48 states. The restaurant offers breakfast items in the mornings, and then switches over to its lunch and dinner menu around noon. Chick-fil-A also provides catering services with special bulk item food pricing. The company's core values were deeply influenced by the Christian beliefs of its late founder, S. Truett Cathy, who was known to be a committed Southern Baptist. As an example reflecting these values, Chick-fil-A restaurants are all closed on Sundays, and for Thanksgiving and Christmas holidays. The company's financial support of charitable organizations opposed to same-sex marriage has been the subject of public controversy, but the company recently announced in 2019 that it would only focus philanthropic activities around organizations devoted to issues involving education, hunger and homelessness.

Cigna is an American worldwide health services organization based in suburban Bloomfield, Connecticut and Philadelphia, Pennsylvania.[2] Its insurance subsidiaries are major providers of medical, dental, disability, life and accident insurance and related products and services, the majority of which are offered through employers and other groups (e.g. governmental and non-governmental organizations, unions and associations). Cigna is incorporated in Connecticut. [3] Cigna offers Medicare and Medicaid products and health, life and accident insurance coverages primarily to individuals in the U.S. and selected international markets. In addition to its ongoing operations described above, Cigna also has certain run-off operations, including a Run-off Reinsurance segment.[4] In the Phoenix metropolitan area, Cigna runs a full-service staff-model HMO (health maintenance organization) with satellite clinics throughout the region, known as the Cigna Medical Group.[5] Cigna Global Health Benefits also operates under the Cigna corporation. Cigna’s motto is 'Together, all the way.'[6] The company ranked No. 73 in the 2018 Fortune 500 list of the largest United States corporations by total revenue.[7] On March 7, 2018, it was announced that Cigna would buy Express Scripts in a $67 billion deal[8][9] and on August 24, 2018, the shareholders of Cigna and Express Scripts approved the deal.

Cintas Corporation is an American company with headquarters in Cincinnati, Ohio, that provides specialized services to businesses, primarily in North America. The firm designs, manufactures and implements corporate identity uniform programs and provides entrance mats, restroom cleaning and supplies, tile and carpet cleaning, promotional products, first aid, safety, and fire protection products and services. Cintas is a publicly held company traded on the Nasdaq Global Select Market under the symbol CTAS and is a component of the Standard & Poor's 500 Index. The company is one of the largest in the industry with 35,000 employees in 2017. Revenue in fiscal year 2016 was $4.905 billion and net income was $693.52 million. Fortune in the United States, named Cintas among its "Most Admired Companies" for eight consecutive years, and Report on Business Magazine named the company one of Canada's Best Employers. Cintas has been featured on episodes of the reality television series Bar Rescue and Hotel Impossible.

Citigroup Inc. or Citi (stylized as citi) is an American multinational investment bank and financial services corporation headquartered in New York City. The company was formed by the merger of banking giant Citicorp and financial conglomerate Travelers Group in 1998; Travelers was subsequently spun off from the company in 2002.[21][22] Citigroup owns Citicorp, the holding company for Citibank, as well as several international subsidiaries. Citi is incorporated in NY.[23] Citigroup is ranked 3rd on the list of largest banks in the United States and, alongside JPMorgan Chase, Bank of America, and Wells Fargo, it is one of the Big Four banks of the United States.[24] It is a systemically important financial institution and is on the list of systemically important banks that are too big to fail. It is one of the nine global investment banks in the Bulge Bracket. Citigroup is ranked 30th on the Fortune 500 as of 2019.[25] Citigroup has over 200 million customer accounts and does business in more than 160 countries.[20] It has 214,000 employees,[20] although it had 357,000 employees before the financial crisis of 2007-2008,[26] when it was rescued via a massive stimulus package by the U.S. government.