Headquarters state · IL
Public companies headquartered in Illinois
103 of the companies OpenFilings tracks list a business address in Illinois. The most common cities are Chicago (51), Northbrook (4), Lake Forest (3), Downers Grove (3), Rosemont (3), Moline (2), Northfield (2), Deerfield (2).
SEC EDGAR snapshot updated Oct 27, 2026, 11:27 PM EDT. Not investment advice.
Companies based in Illinois
| # | Company | Industry (SIC) | Latest filing | Revenue (latest FY) |
|---|---|---|---|---|
| 20 | ABBV AbbVie Inc. | Pharmaceutical Preparations | Oct 23, 2026 | $61.2BFY2025 |
| 83 | MCD MCDONALDS CORP | Retail-Eating Places | Oct 2, 2026 | $26.9BFY2025 |
| 84 | ABT ABBOTT LABORATORIES | Pharmaceutical Preparations | Oct 21, 2026 | $44.3BFY2025 |
| 89 | DE DEERE & CO | Farm Machinery & Equipment | Sep 2, 2026 | $45.7BFY2025 |
| 152 | CME CME GROUP INC. | Security & Commodity Brokers, Dealers, Exchanges & Services | Oct 27, 2026 | $6.5BFY2025 |
| 208 | MDLZ Mondelez International, Inc. | Food and Kindred Products | Sep 4, 2026 | $38.5BFY2025 |
| 217 | ITW ILLINOIS TOOL WORKS INC | General Industrial Machinery & Equipment | Oct 27, 2026 | $16.0BFY2025 |
| 220 | MSI Motorola Solutions, Inc. | Radio & Tv Broadcasting & Communications Equipment | Oct 6, 2026 | $11.7BFY2025 |
| 248 | AJG Arthur J. Gallagher & Co. | Insurance Agents, Brokers & Service | Oct 8, 2026 | $13.9BFY2025 |
| 258 | ALL ALLSTATE CORP | Fire, Marine & Casualty Insurance | Oct 15, 2026 | $67.7BFY2025 |
| 264 | GWW W.W. GRAINGER, INC. | Wholesale-Durable Goods | Oct 2, 2026 | $17.9BFY2025 |
| 321 | VMRK VIVMARK RESIDENTIAL | Real Estate Investment Trusts | Sep 24, 2026 | —FY2025 |
| 336 | MDLN Medline Inc. | Surgical & Medical Instruments & Apparatus | Oct 21, 2026 | $28.4BFY2025 |
| 340 | EXC EXELON CORP | Electric & Other Services Combined | Oct 6, 2026 | $24.3BFY2025 |
| 351 | VTR Ventas, Inc. | Real Estate Investment Trusts | Oct 27, 2026 | $5.8BFY2025 |
| 393 | ADM Archer-Daniels-Midland Co | Fats & Oils | Oct 5, 2026 | $80.3BFY2025 |
| 424 | CBOE Cboe Global Markets, Inc. | Security & Commodity Brokers, Dealers, Exchanges & Services | Oct 14, 2026 | $4.7BFY2025 |
| 435 | UAL United Airlines Holdings, Inc. | Air Transportation, Scheduled | Oct 21, 2026 | $59.1BFY2025 |
| 441 | GEHC GE HealthCare Technologies Inc. | X-Ray Apparatus & Tubes & Related Irradiation Apparatus | Sep 22, 2026 | $20.6BFY2025 |
| 457 | NTRS NORTHERN TRUST CORP | State Commercial Banks | Oct 27, 2026 | $8.1BFY2025 |
| 489 | ULTA Ulta Beauty, Inc. | Retail-Retail Stores, NEC | Sep 21, 2026 | $12.4BFY2026 |
| 509 | DOV DOVER Corp | Construction, Mining & Materials Handling Machinery & Equip | Oct 26, 2026 | $8.1BFY2025 |
| 556 | USFD US Foods Holding Corp. | Wholesale-Groceries & Related Products | Oct 2, 2026 | $39.4BFY2025 |
| 560 | PKG PACKAGING CORP OF AMERICA | Paperboard Containers & Boxes | Oct 22, 2026 | $9.0BFY2025 |
| 593 | CDW CDW Corp | Retail-Catalog & Mail-Order Houses | Oct 27, 2026 | $22.4BFY2025 |
| 628 | CF CF Industries Holdings, Inc. | Agricultural Chemicals | Sep 3, 2026 | $7.1BFY2025 |
| 630 | ZBRA ZEBRA TECHNOLOGIES CORP | General Industrial Machinery & Equipment | Aug 11, 2026 | $5.4BFY2025 |
| 662 | H Hyatt Hotels Corp | Hotels & Motels | Oct 19, 2026 | $7.1BFY2025 |
| 664 | IEX IDEX CORP /DE/ | Pumps & Pumping Equipment | Sep 18, 2026 | $3.5BFY2025 |
| 678 | TRU TransUnion | Services-Consumer Credit Reporting, Collection Agencies | Oct 27, 2026 | $4.6BFY2025 |
| 708 | ULS UL Solutions Inc. | Services-Testing Laboratories | Oct 9, 2026 | $3.1BFY2025 |
| 726 | JLL JONES LANG LASALLE INC | Real Estate Agents & Managers (For Others) | Oct 2, 2026 | $26.1BFY2025 |
| 731 | CDE Coeur Mining, Inc. | Gold and Silver Ores | Sep 28, 2026 | $2.1BFY2025 |
| 765 | CNA CNA FINANCIAL CORP | Fire, Marine & Casualty Insurance | Aug 31, 2026 | $15.0BFY2025 |
| 779 | BAX BAXTER INTERNATIONAL INC | Surgical & Medical Instruments & Apparatus | Oct 27, 2026 | $11.2BFY2025 |
| 799 | ELS EQUITY LIFESTYLE PROPERTIES INC | Real Estate Investment Trusts | Oct 27, 2026 | $1.5BFY2025 |
| 844 | RYAN RYAN SPECIALTY HOLDINGS, INC. | Insurance Agents, Brokers & Service | Sep 9, 2026 | $3.1BFY2025 |
| 853 | TEM Tempus AI, Inc. | Services-Computer Programming, Data Processing, Etc. | Oct 27, 2026 | $1.3BFY2025 |
| 907 | WTFC WINTRUST FINANCIAL CORP | State Commercial Banks | Oct 23, 2026 | $265.6MFY2025 |
| 922 | PCTY Paylocity Holding Corp | Services-Prepackaged Software | Oct 27, 2026 | $1.8BFY2026 |
| 930 | ORI OLD REPUBLIC INTERNATIONAL CORP | Surety Insurance | Oct 26, 2026 | $9.1BFY2025 |
| 968 | LFUS LITTELFUSE INC /DE | Switchgear & Switchboard Apparatus | Sep 17, 2026 | $2.4BFY2025 |
| 1000 | MORN Morningstar, Inc. | Investment Advice | Oct 27, 2026 | $2.4BFY2025 |
| 1024 | ATR APTARGROUP, INC. | Plastics Products, NEC | Sep 21, 2026 | $3.8BFY2025 |
| 1062 | FR FIRST INDUSTRIAL REALTY TRUST INC | Real Estate Investment Trusts | Oct 22, 2026 | $727.1MFY2025 |
| 1100 | CAG CONAGRA BRANDS INC. | Food and Kindred Products | Oct 2, 2026 | $11.3BFY2026 |
| 1105 | FSS FEDERAL SIGNAL CORP /DE/ | Motor Vehicles & Passenger Car Bodies | Sep 28, 2026 | $2.2BFY2025 |
| 1175 | RLI RLI CORP | Fire, Marine & Casualty Insurance | Oct 27, 2026 | $1.9BFY2025 |
| 1177 | INGR Ingredion Inc | Grain Mill Products | Oct 19, 2026 | $7.2BFY2025 |
| 1218 | GATX GATX CORP | Transportation Services | Sep 11, 2026 | $1.7BFY2025 |
| 1227 | NIQ NIQ Global Intelligence plc | Services-Computer Programming, Data Processing, Etc. | Aug 24, 2026 | $4.2BFY2025 |
| 1257 | JBTM JBT MAREL Corp | Special Industry Machinery (No Metalworking Machinery) | Aug 5, 2026 | $3.8BFY2025 |
| 1314 | FBIN Fortune Brands Innovations, Inc. | Millwood, Veneer, Plywood, & Structural Wood Members | Oct 27, 2026 | $4.5BFY2025 |
| 1331 | MIDD MIDDLEBY Corp | Refrigeration & Service Industry Machinery | Oct 13, 2026 | $3.2BFY2026 |
| 1350 | REYN Reynolds Consumer Products Inc. | Plastics, Foil & Coated Paper Bags | Jul 29, 2026 | $3.7BFY2025 |
| 1378 | OPCH Option Care Health, Inc. | Services-Home Health Care Services | Oct 27, 2026 | $5.6BFY2025 |
| 1408 | CCC CCC Intelligent Solutions Holdings Inc. | Services-Prepackaged Software | Oct 16, 2026 | $1.1BFY2025 |
| 1418 | CVSA Covista Inc. | Services-Educational Services | Oct 16, 2026 | $2.0BFY2026 |
| 1424 | BC BRUNSWICK CORP | Engines & Turbines | Sep 22, 2026 | $5.4BFY2025 |
| 1429 | ENVA Enova International, Inc. | Personal Credit Institutions | Oct 27, 2026 | $3.2BFY2025 |
| 1502 | TDS TELEPHONE & DATA SYSTEMS INC /DE/ | Telephone Communications (No Radiotelephone) | Sep 17, 2026 | $1.2BFY2025 |
| 1518 | RSI Rush Street Interactive, Inc. | Services-Miscellaneous Amusement & Recreation | Oct 23, 2026 | $1.1BFY2025 |
| 1533 | AIR AAR CORP | Aircraft & Parts | Oct 27, 2026 | $3.3BFY2026 |
| 1660 | CENX CENTURY ALUMINUM CO | Primary Production of Aluminum | Oct 5, 2026 | $2.5BFY2025 |
| 1690 | HURN Huron Consulting Group Inc. | Services-Management Consulting Services | Oct 6, 2026 | $1.7BFY2025 |
| 1732 | AD ARRAY DIGITAL INFRASTRUCTURE, INC. | Radiotelephone Communications | Sep 23, 2026 | $163.0MFY2025 |
| 1740 | KN Knowles Corp | Household Audio & Video Equipment | Oct 27, 2026 | $593.2MFY2025 |
| 1752 | TR TOOTSIE ROLL INDUSTRIES INC | Sugar & Confectionery Products | Oct 22, 2026 | $732.5MFY2025 |
| 1861 | IVT InvenTrust Properties Corp. | Real Estate Investment Trusts | Oct 27, 2026 | $299.2MFY2025 |
| 1937 | PRDO PERDOCEO EDUCATION Corp | Services-Educational Services | Sep 17, 2026 | $846.1MFY2025 |
| 1992 | XERS Xeris Biopharma Holdings, Inc. | Pharmaceutical Preparations | Oct 14, 2026 | $291.8MFY2025 |
| 2016 | HMN HORACE MANN EDUCATORS CORP /DE/ | Fire, Marine & Casualty Insurance | Oct 19, 2026 | $1.7BFY2025 |
| 2064 | KMPR KEMPER Corp | Fire, Marine & Casualty Insurance | Oct 13, 2026 | $4.8BFY2025 |
| 2078 | NUV NUVEEN MUNICIPAL VALUE FUND INC | — | Oct 27, 2026 | — |
| 2083 | BY BYLINE BANCORP, INC. | State Commercial Banks | Oct 26, 2026 | $572.2MFY2025 |
| 2101 | QCRH QCR HOLDINGS INC | State Commercial Banks | Oct 20, 2026 | $489.4MFY2025 |
| 2120 | HUBG Hub Group, Inc. | Arrangement of Transportation of Freight & Cargo | Oct 27, 2026 | $3.9BFY2024 |
| 2161 | CTS CTS CORP | Printed Circuit Boards | Oct 27, 2026 | $541.3MFY2025 |
| 2191 | RYZ Ryerson Holding Corp | Wholesale-Metals Service Centers & of fices | Sep 21, 2026 | $4.6BFY2025 |
| 2195 | SCL STEPAN CO | Soap, Detergents, Cleang Preparations, Perfumes, Cosmetics | Oct 8, 2026 | $2.3BFY2025 |
| 2208 | ETON Eton Pharmaceuticals, Inc. | Pharmaceutical Preparations | Oct 14, 2026 | $80.0MFY2025 |
| 2219 | GTBIF Green Thumb Industries Inc. | Agricultural Production-Crops | Sep 3, 2026 | $1.2BFY2025 |
| 2246 | FMBH FIRST MID BANCSHARES, INC. | State Commercial Banks | Oct 21, 2026 | $373.0MFY2025 |
| 2255 | HBT HBT Financial, Inc. | State Commercial Banks | Oct 26, 2026 | $255.8MFY2025 |
| 2279 | OSBC OLD SECOND BANCORP INC | State Commercial Banks | Oct 21, 2026 | $355.2MFY2025 |
| 2377 | PSIX POWER SOLUTIONS INTERNATIONAL, INC. | Engines & Turbines | Sep 30, 2026 | $722.4MFY2025 |
| 2391 | ODC Oil-Dri Corp of America | Miscellaneous Manufacturing Industries | Oct 27, 2026 | $493.8MFY2026 |
| 2497 | ACEL Accel Entertainment, Inc. | Services-Amusement & Recreation Services | Oct 22, 2026 | $1.3BFY2025 |
| 2502 | PIII P3 Health Partners Inc. | Services-Health Services | Oct 15, 2026 | $1.5BFY2025 |
| 2545 | SXC SunCoke Energy, Inc. | Steel Works, Blast Furnaces & Rolling Mills (Coke Ovens) | Oct 27, 2026 | $1.8BFY2025 |
| 2569 | SPT Sprout Social, Inc. | Services-Prepackaged Software | Oct 13, 2026 | $457.5MFY2025 |
| 2578 | JBSS SANFILIPPO JOHN B & SON INC | Sugar & Confectionery Products | Oct 20, 2026 | $1.2BFY2026 |
| 2595 | GCMG GCM Grosvenor Inc. | Investment Advice | Oct 2, 2026 | $557.6MFY2025 |
| 2622 | FDUS FIDUS INVESTMENT Corp | — | Oct 26, 2026 | —FY2025 |
| 2645 | BXBL BOXABL Inc. | General Bldg Contractors - Residential Bldgs | Oct 8, 2026 | —FY2025 |
| 2690 | MSBI Midland States Bancorp, Inc. | State Commercial Banks | Oct 22, 2026 | —FY2025 |
| 2740 | GRPN Groupon, Inc. | Services-Advertising Agencies | Oct 27, 2026 | $498.4MFY2025 |
| 2820 | CARS Cars.com Inc. | Services-Computer Processing & Data Preparation | Oct 21, 2026 | $723.2MFY2025 |
| 2885 | DRUG BRIGHT MINDS BIOSCIENCES INC. | Pharmaceutical Preparations | Oct 2, 2026 | —FY2024 |
| 2920 | OPFI OppFi Inc. | Finance Services | Oct 5, 2026 | $381.2MFY2025 |
| 2929 | MNPR Monopar Therapeutics | Pharmaceutical Preparations | Oct 27, 2026 | $0FY2025 |
| 2997 | ALIT Alight, Inc. / Delaware | Services-Business Services, NEC | Oct 14, 2026 | $2.3BFY2025 |
| 2999 | TWI TITAN INTERNATIONAL INC | Steel Works, Blast Furnaces & Rolling Mills (Coke Ovens) | Oct 27, 2026 | $1.8BFY2025 |
Ranked by position in the SEC company ticker list (roughly by market value). The headquarters state comes from the business address in EDGAR and can differ from the state of incorporation.
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Largest industries in Illinois
- State Commercial Banks (8)
- Pharmaceutical Preparations (6)
- Fire, Marine & Casualty Insurance (5)
- Real Estate Investment Trusts (5)
- Services-Prepackaged Software (3)
- Security & Commodity Brokers, Dealers, Exchanges & Services (2)
- Food and Kindred Products (2)
- General Industrial Machinery & Equipment (2)
- Insurance Agents, Brokers & Service (2)
- Surgical & Medical Instruments & Apparatus (2)
- Services-Computer Programming, Data Processing, Etc. (2)
- Investment Advice (2)
Latest reports from Illinois companies
| Filed | Company | Form | What it is | Original |
|---|---|---|---|---|
| Oct 27, 2026 | AIR AAR CORP | 8-K | Regulation FD disclosure· period Oct 26, 2026 | Document · Index |
| Oct 27, 2026 | CTS CTS CORP | 10-Q | Quarterly report· period Sep 30, 2026 | Document · Index |
| Oct 27, 2026 | CTS CTS CORP | 8-K | Regulation FD disclosure· period Oct 27, 2026 | Document · Index |
| Oct 27, 2026 | CTS CTS CORP | 8-K | Results of operations; Regulation FD disclosure· period Oct 27, 2026 | Document · Index |
| Oct 27, 2026 | ELS EQUITY LIFESTYLE PROPERTIES INC | 10-Q | Quarterly report· period Sep 30, 2026 | Document · Index |
| Oct 27, 2026 | FBIN Fortune Brands Innovations, Inc. | 8-K | Director or officer change; Regulation FD disclosure· period Oct 22, 2026 | Document · Index |
| Oct 27, 2026 | ITW ILLINOIS TOOL WORKS INC | 8-K | Results of operations· period Oct 27, 2026 | Document · Index |
| Oct 27, 2026 | IVT InvenTrust Properties Corp. | 8-K | Regulation FD disclosure· period Oct 27, 2026 | Document · Index |
| Oct 27, 2026 | IVT InvenTrust Properties Corp. | 10-Q | Quarterly report· period Sep 30, 2026 | Document · Index |
| Oct 27, 2026 | IVT InvenTrust Properties Corp. | 8-K | Results of operations· period Oct 27, 2026 | Document · Index |
| Oct 27, 2026 | KN Knowles Corp | 10-Q | Quarterly report· period Sep 30, 2026 | Document · Index |
| Oct 27, 2026 | ODC Oil-Dri Corp of America | DEF 14A | Definitive proxy statement· period Dec 8, 2026 | Document · Index |
| Oct 27, 2026 | SXC SunCoke Energy, Inc. | 10-Q | Quarterly report· period Sep 30, 2026 | Document · Index |
| Oct 27, 2026 | SXC SunCoke Energy, Inc. | 8-K | Results of operations; Regulation FD disclosure; Other events· period Oct 27, 2026 | Document · Index |
| Oct 27, 2026 | TRU TransUnion | 10-Q | Quarterly report· period Sep 30, 2026 | Document · Index |
| Oct 27, 2026 | TRU TransUnion | 8-K | Results of operations; Regulation FD disclosure· period Oct 27, 2026 | Document · Index |
| Oct 27, 2026 | VTR Ventas, Inc. | 8-K | Results of operations· period Oct 27, 2026 | Document · Index |
| Oct 26, 2026 | AIR AAR CORP | 8-K | Material agreement; New financial obligation; Regulation FD disclosure· period Oct 23, 2026 | Document · Index |
| Oct 26, 2026 | FDUS FIDUS INVESTMENT Corp | 8-K | Material agreement; New financial obligation· period Oct 20, 2026 | Document · Index |
| Oct 26, 2026 | HBT HBT Financial, Inc. | 8-K | Results of operations; Regulation FD disclosure· period Oct 26, 2026 | Document · Index |
| Oct 23, 2026 | CME CME GROUP INC. | 10-Q | Quarterly report· period Sep 30, 2026 | Document · Index |
| Oct 23, 2026 | TEM Tempus AI, Inc. | 8-K | Other events· period Oct 23, 2026 | Document · Index |
| Oct 22, 2026 | BY BYLINE BANCORP, INC. | 8-K | Results of operations· period Oct 22, 2026 | Document · Index |
| Oct 22, 2026 | DOV DOVER Corp | 10-Q | Quarterly report· period Sep 30, 2026 | Document · Index |
| Oct 22, 2026 | DOV DOVER Corp | 8-K | Results of operations; Regulation FD disclosure· period Oct 22, 2026 | Document · Index |
Source
- U.S. Securities and Exchange Commission, EDGAR company submissions (business address) and XBRL company facts. The SEC does not endorse OpenFilings.
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