Illinois Top Companies List by Market Cap as of August 2026

Crane NXT is a technology company works on providing advanced technologies and services. It develop solutions and technology to secure, detect, and authenticate. Headquarters is in USA.

First Midwest Bancorp is a Retail Banking Holding company. It is the 3rd largest independent Illinois headquartered bank, total assets is $20B, assets under management is $11B, total deposits is $15.7B. The company is having more than 100 locations and dedicated consumer, small business, mortgage and ecommerce teams and having more than 55,000 free ATMS, world class mobile banking and four checking account choices to meet needs. The headquarters is in USA.

First Busey Corporation is a Financial Customer Service, Community Involvement and Expanding Shareholder Value company. The headquarters is in USA.

Hub Group is a Innovative, Value Driving Supply Chain Solutions company. The headquarters is in USA.

Huron Consulting Group is a consultancy that collaborates with clients to drive strategic growth, ignite innovation and navigate constant change. The company helps in clients accelerate operational, digital and cultural transformation enabling the change they need to own their future. The service are provide to the company which are working in the sector of education, energy and utilities, financial services, healthcare, industrials and manufacturing, life sciences and public sector. The headquarters is in USA.

Horace Mann Educators Corporation is a Insurance company. The headquarters is in USA.

Perdoceo Education Corporation is a Higher Education Services company. It has approximately 4,000 employees. It offer a quality postsecondary education primarily online to a diverse student population along with campus based and blended learning programs and provide degree programs through the masters or doctoral level as well as associate and bachelors levels. The headquarters is in USA.