From a review of Company SEC filings and the Google Finance website, I found 91 Illinois Companies with stock market caps of above $1 bil recently.
The table below shows the US GAAP Pretax Income (Loss) From Continuing Operations for the first quarter of both 2020 and 2019 for each of these 91 Illinois Companies.
| US | US | |||
| GAAP | GAAP | |||
| Pretax | Pretax | |||
| Income | Income | |||
| (Loss) | (Loss) | Better | ||
| First | First | (Worse) | ||
| Quarter | Quarter | % | ||
| Illinois Largest Companies | 2020 | 2019 | Change | |
| Market Caps Above $1 Bil | City HQs | mils $ | mils $ | |
| AbbVie | North Chicago | 3,098 | 2,544 | |
| Caterpillar | Deerfield | 1,513 | 2,264 | |
| McDonalds | Chicago | 1,445 | 1,831 | |
| Walgreen's Boots Alliance | Deerfield | 1,097 | 1,356 | |
| CME Group | Chicago | 989 | 640 | |
| Deere & Co | Moline | 928 | 1,473 | |
| Illinois Tool Works | Glenview | 735 | 790 | |
| Mondelez Intl | Deerfield | 699 | 973 | |
| Allstate | Northbrook | 661 | 1,620 | |
| Abbott Labs | Abbott Park | 633 | 632 | |
| Northern Trust | Chicago | 461 | 452 | |
| Equity Commonwealth | Chicago | 426 | 212 | |
| Baxter Intl | Deerfield | 378 | 386 | |
| Archer Daniels Midland | Chicago | 375 | 315 | |
| Arthur J Gallagher & Co | Rolling Meadows | 356 | 322 | |
| Equity Residential | Chicago | 334 | 110 | |
| Ventas | Chicago | 326 | 126 | |
| Conagra Brands | Chicago | 263 | 297 | |
| Motorola Solutions | Chicago | 224 | 185 | |
| Cboe Global Markets | Chicago | 218 | 128 | |
| Dover | Downers Grove | 214 | 138 | |
| CDW Corp | Vernon Hills | 212 | 192 | |
| LKQ Corp | Chicago | 207 | 190 | |
| Packaging Corp of America | Lake Forest | 190 | 249 | |
| Adtalem Global Education | Chicago | 160 | 43 | |
| WW Grainger | Lake Forest | 142 | 351 | |
| Fortune Brands Home & Security | Deerfield | 139 | 113 | |
| Ingredion | Westchester | 136 | 139 | |
| CDK Global | Hoffman Estates | 132 | 121 | |
| Idex Corp | Lake Forest | 127 | 137 | |
| CF Industries | Deerfield | 104 | 110 | |
| Zebra Technologies | Lincolnshire | 103 | 131 | |
| TransUnion | Chicago | 97 | 76 | |
| Middleby | Elgin | 96 | 90 | |
| Brunswick | Mettawa | 89 | 95 | |
| Wintrust Financial | Rosemont | 87 | 119 | |
| Telephone and Data Systems | Chicago | 86 | 104 | |
| Exelon | Chicago | 85 | 1,282 | |
| AptarGroup | Crystal Lake | 78 | 90 | |
| Kemper Corp | Chicago | 78 | 195 | |
| United States Cellular | Chicago | 76 | 85 | |
| Equity Lifestyle Properties | Chicago | 71 | 119 | |
| Reynolds Consumer Products | Lake Forest | 65 | 22 | |
| IAA Inc | Westchester | 60 | 74 | |
| Hill-Rom Holdings | Chicago | 57 | 61 | |
| Univar Solutions | Downers Grove | 56 | (93) | |
| Atkore International Group | Harvey | 52 | 40 | |
| Paylocity | Schaumburg | 48 | 37 | |
| Anixter Intl | Glenview | 48 | 56 | |
| Methode Electronics | Chicago | 44 | 28 | |
| First Industrial Realty Trust | Chicago | 41 | 24 | |
| Cabot Microelectronics | Aurora | 40 | 38 | |
| GATX Corp | Chicago | 40 | 35 | |
| John Bean Technologies | Chicago | 38 | 26 | |
| Stepan | Northfield | 36 | 31 | |
| Littelfuse | Chicago | 35 | 46 | |
| Morningstar | Chicago | 33 | 46 | |
| Federal Signal | Oak Brook | 31 | 23 | |
| R1 RCM | Chicago | 29 | (3) | |
| First Midwest Bancorp | Chicago | 26 | 61 | |
| Jones Lang LaSalle | Chicago | 23 | 21 | |
| Retail Properties of America | Oak Brook | 22 | 23 | |
| First Busey | Urbana | 19 | 35 | |
| Horace Mann Educators | Springfield | 18 | 39 | |
| Hub Group | Oak Brook | 17 | 33 | |
| Tootsie Roll Industries | Chicago | 15 | 12 | |
| OneSpan | Chicago | 1 | (6) | |
| Envestnet | Chicago | (9) | (15) | |
| Camping World Holdings | Lincolnshire | (10) | (4) | |
| Sprout Social | Chicago | (10) | (5) | |
| Knowles | Itasca | (11) | (0) | |
| Coeur Mining | Chicago | (16) | (34) | |
| Phathom Pharmaceuticals | Buffalo Grove/Florham Park,NJ | (20) | (1) | |
| Allscripts Healthcare Solutions | Chicago | (21) | (6) | |
| Navistar | Lisle | (26) | (44) | |
| Horizon Therapeutics plc | Lake Forest | (33) | (35) | |
| GrubHub | Chicago | (52) | 6 | |
| Stericycle | Bannockburn | (58) | (34) | |
| TreeHouse Foods | Oak Brook | (73) | (21) | |
| CNH Industrial NV | Burr Ridge/London | (76) | 349 | |
| Discover Financial Services | Riverwoods | (78) | 930 | |
| RLI Corp | Peoria | (79) | 82 | |
| Cushman & Wakefield plc | Chicago/London | (82) | (62) | |
| CNA Financial | Chicago | (89) | 419 | |
| Brookfield Property REIT | Chicago | (95) | 43 | |
| Ulta Beauty | Bolingbrook | (103) | 240 | |
| Hyatt Hotels | Chicago | (138) | 83 | |
| US Foods Holding | Rosemont | (172) | 91 | |
| Old Republic Intl | Chicago | (770) | 519 | |
| Boeing | Chicago/Seattle | (1,503) | 2,333 | |
| United Airlines | Chicago | (2,114) | 367 | |
| Total all 91 Illinois Companies | 13,124 | 26,735 | -51% |
