Best fortune 500 companies in Tulsa, OK

Delek US Holdings is a diversified downstream energy company with operations in three primary business segments: petroleum refining, logistics and convenience store retailing. Delek US is headquartered in Brentwood, Tennessee and employs more than 4,000 people across the eight states. The Company has been publicly traded on the New York Stock Exchange since 2006 under the ticker symbol "DK".

Cisco Systems, Inc., established in 1984, designs, manufactures, and sells Internet Protocol based networking and other products related to the communications and information technology industry worldwide. The company's technology powers entertainment, retail, healthcare, education, and other markets. Cisco System's core development areas are routing and switching, as well as in advanced technologies such as home networking, IP telephony, optical networking, security, storage area networking, and wireless technology. Today, the company has more than 71,000 employees worldwide. Its headquarters are located in San Jose, CA.

Microsoft is an American multinational corporation that develops, manufactures, licenses, supports, and sells a range of software products and services. Microsoft's devices and consumer (D&C) licensing segment licenses Windows operating system and related software; Microsoft Office for consumers; and Windows Phone operating system. The company's computing and gaming hardware segment provides Xbox gaming and entertainment consoles and accessories, second-party and third-party video games, and Xbox Live subscriptions; surface devices and accessories; and Microsoft PC accessories. Its phone hardware segment offers Lumia smartphones and other non-Lumia phones. Its D&C other segment provides Windows Store, Xbox Live transactions, and Windows phone store; search advertising; display advertising; Office 365 Home and Office 365 Personal; first-party video games; and other consumer products and services as well as operating retail stores. Microsoft's commercial licensing segments licenses server products, including Windows Server, Microsoft SQL Server, Visual Studio, System Center, and related Client Access Licenses (CALs); Windows Embedded; Windows operating system; Microsoft Office for business, including Office, Exchange, SharePoint, Lync, and related CALs; Microsoft Dynamics business solutions; and Skype. Its commercial other segment offers enterprise services, including premier support services and Microsoft consulting services; commercial cloud comprising Office 365 Commercial, other Microsoft Office online offerings, Dynamics CRM Online, and Microsoft Azure; and other commercial products and online services. The company markets and distributes its products through original equipment manufacturers, distributors, and resellers, as well as online. Microsoft Corporation was founded by Bill Gates and Paul Allen in 1974. It is based in Redmond, Washington.

Humana Inc., headquartered in Louisville, Kentucky, is a leading health care company that offers a wide range of insurance products and health and wellness services that incorporate an integrated approach to lifelong well-being. Since Humana's establishment in 1961, the company's main purpose has been to support people in their daily endeavors to live a healthy life, create innovative programs and partnerships that reflect the company's commitment.

Praxair, Inc. is an American worldwide industrial gases company. It is the largest industrial gases company in North and South America, and the third-largest worldwide by revenue. For over 100 years, Praxair has taken something as fundamental as air and turned it into ways to make plants operate cleaner and more productive. They have 26,000 employees in more than 50 countries.

Stanley Black & Decker is a purpose-driven, $14 billion revenue industrial organization. Stanley Black & Decker has 61,000 employees in more than 60 countries and operates the world’s largest tools and storage business, the world’s second-largest commercial electronic security services company, a leading engineered fastening business as well as Oil & Gas and Infrastructure businesses. The company’s iconic brands include Black & Decker, Bostitch, CRAFTSMAN, DEWALT, FACOM, Irwin, Lenox, Porter Cable and Stanley. Stanley Black & Decker is a company for the makers and innovators, the craftsmen and the caregivers, and those doing the hard work to make the world a better place.

Navistar International Corp. is a holding company whose individual units provide integrated and best-in-class transportation solutions. Based in Warrenville, Ill., the company produces International brand commercial trucks, mid-range diesel engines and IC brand school buses, and Workhorse brand chassis for motor homes and step vans. It is a private-label designer and manufacturer of diesel engines for the pickup truck, van and SUV markets. The company also provides truck and diesel engine parts and service. A wholly owned subsidiary offers financing services.

For over 40 years, Animal Health International, Inc. has been the premier animal health service provider in North America. The company represents over 1,000 manufacturers that supply products focused on beef and dairy cattle, equine, poultry, and swine. Moreover, this reliable business offers products ranging from vaccines and pharmaceuticals to high-technology art equipment and software.

We power our partners’ success by integrating a vast product assortment, a world-class fulfillment network and a full suite of advanced sales, marketing, and digital tools. It’s a seamless solution that powers unlimited possibilities for our customers in the pursuit of smarter operations, category expansion, and business growth. We connect our customers, a diverse network of resellers, distributors, online retailers and national organizations across the U.S., with top manufacturers in the market to offer over 2 million products in our portfolio.

Founded in 1919, Halliburton celebrates its 100 years of service as one of the world's largest providers of products and services to the energy industry. With 60,000 employees, representing 140 nationalities in more than 80 countries, this company helps its customers maximize value throughout the lifecycle of the reservoir -- from locating hydrocarbons and managing geological data, to drilling and formation evaluation, well construction and completion, and optimizing production throughout the life of the asset.

Since 1978, DR Horton has been delivering the American dream. They believe in a vision of homeownership for everyone, a home for every stage in life. Their homes can be found from Hawaii to New Jersey, with local markets supported by the national presence of America's number one homebuilder. This company's people work within their numerous communities across the nation to grant customers unique, personalized services during all stages of the homebuying experience.

Whirlpool manufactures and markets major home appliances. The company's principal products include laundry appliances, refrigeration and room air conditioning equipment, cooking appliances, dishwashers, mixers, and other small household appliances. It also produces hermetic compressors for refrigeration systems. In North America, the company markets and distributes major home appliances and portable appliances under various brand names. In the United States, it markets and distributes products primarily under the Whirlpool, Maytag, KitchenAid, Jenn-Air, Amana, Roper, Admiral, Affresh, and Gladiator brand names primarily to retailers, distributors, and builders. In Canada, the company markets and distributes major home appliances primarily under the Inglis, Admiral, Whirlpool, Maytag, Jenn-Air, Amana, Roper, Estate, and KitchenAid brand names. In Mexico, the company markets and distributes major home appliances primarily under the Whirlpool, Maytag, Acros, KitchenAid, and Supermatic brand names. Whirpool was founded in 1911 and is headquartered in Benton Harbor, Michigan.

Owens & Minor, a FORTUNE 500 company headquartered in Richmond, Virginia, is the leading distributor of medical and surgical supplies to the acute-care market and a leading provider of healthcare supply-chain management solutions. Owens & Minor, Inc., is traded on the New York Stock Exchange under the symbol OMI.

Robert Half is a professional services company and is the world's first and largest accounting and finance staffing firm. The company was founded by Robert Half in 1948 by providing professional staffing services. Robert Half is also now involved in risk consulting and internal audit services in addition to its human resources consultancy business. The company reported revenues of US$4.2 billion for the fiscal year 2013.

Target Corporation is the second-largest department store retailer in the United States. Headquartered in Minneapolis, Minnesota, this company serves guests at over 1,800 stores and at Target. Com. Since 1946, this company has given five percent of its profit to communities which today equals millions of dollars a week. Target Corporation has around 10,000 employees and a revenue of up to $1 billion.

CBRE Group, Inc. is a holding company that conducts all of its operations through its indirect subsidiaries. The Company is a commercial real estate services firm. As of December 31, 2011, it operated approximately 300 offices worldwide, providing commercial real estate services under the CBRE brand name, investment management services under the CBRE Global Investors brand name and development services under the Trammell Crow brand name. CBRE Services, Inc., its direct wholly owned subsidiary, is also a holding company and is the primary obligor or issuer with respect to most of its long-term indebtedness. The Company operates in five segments: Americas, Europe, Middle East and Africa (EMEA), Asia Pacific, Global Investment Management and Development Services. In March 2014, the Company acquired VALTEQ Gesellschaft mbH and its subsidiaries.

Honeywell First Responder Products is the leading manufacturer of head-to-toe personal protective equipment such as structural turnout gear, proximity gear, EMS gear, helmets, boots, hoods, gloves, EN products, etc. Headquarted in Dayton, Ohio, Honeywell First Responder has representatives throughout the US and internationally. Its mission is to provide high quality equipment and solutions that help firefighters work efficiently and safely.

Northwestern Mutual has been helping people and businesses achieve financial security for more than 160 years. Through a holistic planning approach, Northwestern Mutual combines the expertise of its financial professionals with a personalized digital experience and industry-leading products to help its clients plan for what's most important. Northwestern Mutual delivers financial security to millions with life, disability income and long-term care insurance, annuities, and brokerage and advisory services. The company manages billion of dollars of investments owned by its clients and held or managed through its wealth management and investment services businesses. Northwestern Mutual is the marketing name for The Northwestern Mutual Life Insurance Company (NM), Milwaukee, WI (life and disability insurance, annuities, and life insurance with long-term care benefits) and its subsidiaries. Subsidiaries include Northwestern Mutual Investment Services, LLC (NMIS) (securities), broker-dealer, registered investment adviser, member FINRA and SIPC; the Northwestern Mutual Wealth Management Company (NMWMC) (fiduciary and fee-based financial planning services), federal savings bank; and Northwestern Long Term Care Insurance Company (NLTC) (long-term care insurance).

Tenet Healthcare Corporation is a diversified healthcare services company with 115,000 employees united around a common mission: to help people live happier, healthier lives. Through its subsidiaries, partnerships and joint ventures, including United Surgical Partners International, this company operates general acute care and specialty hospitals, ambulatory surgery centers, urgent care centers and other outpatient facilities.