biggest companies in Naperville, IL

Accenture is a global management consulting, technology services and outsourcing company, with approximately 204,000 people serving clients in more than 120 countries. Combining unparalleled experience, comprehensive capabilities across all industries and business functions, and extensive research on the world's most successful companies, Accenture collaborates with clients to help them become high-performance businesses and governments.

Cognizant (Nasdaq-100: CTSH) is a professional services companies, transforming clients' business, operating and technology models for the digital era. Our unique industry-based, consultative approach helps clients envision, build and run more innovative and efficient businesses. Headquartered in the U.S., Cognizant is ranked 195 on the Fortune 500 and is consistently listed among the most admired companies in the world. Learn how Cognizant helps clients lead with digital at www.cognizant.com or follow us @Cognizant

EY is a global leader in assurance, tax, transaction and advisory services. The insights and quality services EY delivers helps build trust and confidence in the capital markets and in economies the world over. EY develops outstanding leaders who team to deliver on their promises to all of their stakeholders. In so doing, EY play a critical role in building a better working world for their people, for their clients and for their communities. EY refers to the global organization and may refer to one or more of the member firms of Ernst & Young Global Limited, each of which is a separate legal entity. Ernst & Young Global Limited, a UK company limited by guarantee, does not provide services to clients. EY's 190,000 people are the foundation of EY's success. EY assembles the right multi-disciplinary team for your business, drawing on their global network of professionals. Working with you in a collaborative style, EY gains a clear understanding of your organisation and strive to identify issues before they become problems. You get the people you need, wherever in the world you need them, backed up by leading practices, methodologies and tools.

Nokia is a Finnish multinational communications corporation engaged in the manufacturing of mobile devices, network infrastructure, location-based technologies, and advanced technologies businesses worldwide. The corporation is also engaged in converging internet and communications industries. It manufactures a wide range of mobile devices with services and software that enable people to experience music, navigation, video, television, imaging, games, business mobility, and more. Nokia also operates through four segments, including mobile broadband, global services, HERE, and technologies. Its mobile broadband segment provides consumers with hardware and core network software required to deliver mobile voice and data services. The corporation's technology segment is involved in the development and sale of intellectual property rights and technology licensing activities. Its global services segment provides network implementation, care, managed services, and network planning and optimization. Finally, the HERE segment provides the development of local commerce, location-based services, and more.

Alsthom was formed by a merger between Compagnie Francaise Thomson-Houston and the electric engineering division of Société Alsacienne de Constructions Mécaniques in 1928.

Merck is a biopharmaceutical company that offers medicines and vaccines for various diseases. The company is driven by a mission to discover, develop, and provide innovative products and services that save and improve lives around the world. Merck delivers vaccines, medications, and consumer and animal health products that can help millions around the world. Merck was founded in 1891 and is headquartered in Kenilworth, NJ.

BP America, Inc. is engaged in exploring, producing, refining, marketing, trading, and transporting oil and natural gas in the United States. It offers fuel for transportation, energy for heat and light, lubricants for engines, and petrochemicals; produces a range of materials, including terephthalic acid, paraxylene, and naphthalene dicarboxylate that are necessary to make products, such as clothes, flat-screen televisions, safety belts, and plastic beverage bottles; manufactures and markets lubricants and related products for automotive, industrial, marine, energy, and space exploration customers; and supplies fuel and related retail services to consumers through independent jobbers and dealer wholesalers, as well as company-owned and franchised retail sites. The company also buys and sells products ranging from oil and natural gas to power and financial derivatives; refines, transports, sells, and trades crude oil and petroleum products; offers biofuels; operates pipelines that transport oil, refined products, natural gas, natural gas liquids, and chemicals; and operates wind farms in Texas, Indiana, California, Colorado, South Dakota, Idaho, Kansas, Hawaii, and Pennsylvania. In addition, it produces ethanol from sugarcane; and operates retail sites in the United States. Further, the company operates refineries in Whiting, Indiana; in Blaine, Washington; and Oregon, Ohio. BP America, Inc. was formerly known as BP-Amoco, Inc. The company was incorporated in 1974 and is based in Warrenville, Illinois. It has operations in Alaska, Alabama, California, Chicagoland, Colorado, Illinois, Indiana, Louisiana, Michigan, New Jersey, New Mexico, New York, Ohio, Oklahoma, Pennsylvania, South Carolina, Texas, Washington, and Wyoming. BP America, Inc. operates as a subsidiary of BP p.l.c.

Ecolab is the global leader in water, hygiene and energy technologies and services. They help make the world cleaner, safer and healthier by delivering comprehensive solutions and on-site service to promote safe food, maintain clean environments, optimize water and energy use, and improve operational efficiencies for customers at nearly three million locations in more than 170 countries. Ecolab's innovative products and services touch virtually every aspect of daily life and are used in hospitals, hotels, restaurants, schools, manufacturing plants, refineries and several other locations throughout the world.

XPO Logistics, established in 1989 in Greenwich, CT, is a top ten global logistics company that provides transportation and logistics services in the United States, North America, France, the United Kingdom, Spain, Europe, Asia, and internationally. The company has a staff of about 97,000 wordlwide that offer services to customers in various industries, such as retail, e-commerce, food and beverage, manufacturing, technology and telecommunications, aerospace and defense, life sciences, healthcare, medical equipment, and agriculture. Some of the most successful companies they serve include Disney, Pepsi, L'Oreal, Toyota and many other.

Ryder Systems, Inc., boasts that they are the only end-to-end transportation and logistics provider in the US With nearly 8,000 professional drivers, more than 234,000 trucks, and partnerships with many Fortune 500 companies, Ryder is a leader in its industry in the US.

AccentCare is a national leader in post-acute home healthcare services, providing comprehensive care, guidance and support for a wide variety of needs, including short-term, complex and chronic conditions.

Southern Company is an American gas and electric utility holding company based in the southern United States.

Health Care Service Corporation (HCSC), a Mutual Legal Reserve Company and an Independent Licensee of the Blue Cross and Blue Shield Association, is the largest non-investor-owned health insurer in the United States and fourth largest overall, operating through their Blue Cross and Blue Shield Plans in Illinois, Montana, New Mexico, Oklahoma and Texas. HCSC affiliates and subsidiaries such as Dearborn National, TMG Health and Medecision, offer group life, disability and dental solutions, as well as a range of other individual solutions. The company, founded in 1936, serves nearly 14.7 million members across five states and employs nearly 23,000 people in over 60 local offices. HCSC is dedicated to expanding access to high quality, cost effective health care and equipping their members with information and tools so they can make the best healthcare decisions for themselves and their families. Their health plans were pioneers in their states, as they were the first to provide coverage for a number of procedures - ranging from heart and bone marrow transplants, to cancer and leukemia treatments. Today, they are leaders in the development of value-based care models to spur greater collaboration and accountability among various stakeholders to improve the health care experience for patients and consumers and enable them lead healthier lives. HCSC is dedicated to contributing to the well-being of the communities in which their employees and members live, work and play. They continue their longstanding tradition of community support through charitable investments with community partners, volunteerism, civic engagement, event sponsorship, employee giving, donation drives and in-kind donations.

Discount Tire Company is an independent tire and wheel retailer.

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Northwestern Medicine formerly Northwestern Memorial Healthcare, is a non-profit healthcare system affiliated with the Northwestern University Feinberg School of Medicine, in Chicago, Illinois.

At Hormel Foods, we are committed to providing consumers with high-quality, high-value branded products that are flavorful, nutritious and convenient. Guided by Our Way-our internal principles platform-we strive to set industry standards for product quality, work environment and community engagement.

UPM-Kymmene Oyj is a Finnish forest industry company. UPM-Kymmene was formed by the merger of Kymmene Corporation with Repola Oy and its subsidiary United Paper Mills Ltd in 1996. UPM consists of six business groups: UPM Biorefining, UPM Energy, UPM Raflatac, UPM Paper Asia, UPM Paper ENA and UPM Plywood.

Greif, Inc. is a producer of industrial packaging products and services with manufacturing facilities located in over 50 countries. The Company offers a line of industrial packaging products, such as steel, fiber and plastic drums, rigid intermediate bulk containers, closure systems for industrial packaging products, transit protection products, water bottles and reconditioned containers, and services such as container lifecycle management, blending, filling and other packaging services, logistics and warehousing. It also produces containerboard and corrugated products for niche markets in North America. It sells timber to third parties from its timberland in the south-eastern United States. It has four segments: Rigid Industrial Packaging & Services, Flexible Products & Services, Paper Packaging and Land Management.