| 1 | ABBOTT LABORATORIES | $44.3B | 73,000 | 85 |
| 2 | ift product development division | $4.0B | 20,000 | 80 |
| 3 | uchicago ear and hearing | $3.3B | 20,000 | 80 |
| 4 | komatsu company stores west | $3.0B | 20,000 | 80 |
| 5 | MORNINGSTAR, INC. | $2.4B | -- | 85 |
| 6 | depaul university college of communications | $2.3B | 20,000 | 80 |
| 7 | the lynda morrill toastmasters club | $2.3B | 20,000 | 80 |
| 8 | mstrategy & company llc | $1.4B | 20,000 | 80 |
| 9 | global real estate advisory team | $1.3B | 20,000 | 80 |
| 10 | 仲量联行jll | $1.3B | 20,000 | 80 |
| 11 | the parking lot fund | $1.3B | 20,000 | 80 |
| 12 | cushman & wakefield - formerly wright property | $1.3B | 20,000 | 80 |
| 13 | accenture distribution & marketing for financial services | $1.2B | 20,000 | 80 |
| 14 | safe harbor fc llc | $1.2B | 20,000 | 80 |
| 15 | at&t pioneers illinois chapter | $1.0B | 20,000 | 80 |
| 16 | the marmon group | $731.4M | 20,000 | 70 |
| 17 | marmon rail | $717.9M | 7,500 | 70 |
| 18 | wuppermann inc | $662.8M | 3,000 | 70 |
| 19 | genex exports | $574.7M | 750 | 70 |
| 20 | juniper networks central | $563.4M | 20,000 | 70 |
| 21 | SUPREME LOBSTER AND SEAFOOD COMPANY | $444.6M | 350 | 70 |
| 22 | corelle brands food service | $406.9M | 3,000 | 70 |
| 23 | Oak Street Health, part of CVS Health | $399.5M | 2,394 | 70 |
| 24 | cassarya | $382.6M | 3,000 | 70 |
| 25 | pps-flanders | $367.3M | 3,000 | 70 |
| 26 | goldman sachs, city colleges of chicago, and babson college | $343.3M | 3,000 | 70 |
| 27 | northwestern university postdoctoral association | $343.3M | 3,000 | 70 |
| 28 | trustees of pipe fitters association local 597 | $306.4M | 7,500 | 70 |
| 29 | gold standard baking, inc. | $304.9M | 750 | 70 |
| 30 | tempel holdings, inc | $292.9M | 3,000 | 70 |
| 31 | mytrucksure.com | $287.2M | 3,000 | 70 |
| 32 | The Options Clearing Corporation (OCC) | $270.3M | 1,286 | 70 |
| 33 | womencraft | $268.2M | 350 | 70 |
| 34 | supply chain commerce | $268.2M | 350 | 70 |
| 35 | Delract | $268.2M | 350 | 70 |
| 36 | tableau certification questions practice test | $211.5M | 3,000 | 70 |
| 37 | techedge usa, inc. | $211.5M | 3,000 | 70 |
| 38 | safesoft international | $211.5M | 3,000 | 70 |
| 39 | cushman & wakefield inc. | $196.5M | 3,000 | 70 |
| 40 | national council of ymcas of the usa | $190.0M | 20,000 | 70 |
| 41 | chicago booth executive education | $186.6M | 20,000 | 70 |
| 42 | MIC Cargo | $180.2M | 350 | 70 |
| 43 | fnf midwest/midsouth agency | $179.7M | 3,000 | 70 |
| 44 | ceteris, a duff & phelps business | $179.7M | 3,000 | 70 |
| 45 | El Milagro Inc. (US) | $177.9M | 350 | 70 |
| 46 | World's Finest® Chocolate | $177.9M | 350 | 70 |
| 47 | Bays English Muffin Corporation | $177.9M | 350 | 70 |
| 48 | Gourmet Kitchens | $177.9M | 350 | 70 |
| 49 | Luxury Yachts Ltd | $171.1M | 125 | 70 |
| 50 | devasya group | $170.0M | 3,000 | 70 |
| 51 | welsh & katz, ltd. | $151.5M | 3,000 | 70 |
| 52 | cuisine de france | $149.2M | 750 | 70 |
| 53 | Partsmaster | $144.1M | 350 | 70 |
| 54 | Kennicott | $144.1M | 350 | 70 |
| 55 | Luster Products Inc. | $142.8M | 350 | 70 |
| 56 | Rank+Rally | $142.8M | 350 | 70 |
| 57 | Wholee | $142.8M | 350 | 70 |
| 58 | CMC SERVICE OF CHICAGO,LLC a Great Clips franchise | $142.8M | 350 | 70 |
| 59 | Celeritas Freight Solutions | $142.8M | 350 | 70 |
| 60 | Brite Logistics, Inc. | $142.8M | 350 | 70 |
| 61 | Datt Freight Transportation | $142.8M | 350 | 70 |
| 62 | Most Enterprise Inc. | $142.8M | 350 | 70 |
| 63 | Davis Bancorp | $142.8M | 350 | 70 |
| 64 | Comfort Casters Global | $142.8M | 350 | 70 |
| 65 | Virtual Freight Inspections | $142.8M | 350 | 70 |
| 66 | Go Grane | $142.8M | 350 | 70 |
| 67 | merisant worldwide inc. | $142.3M | 350 | 70 |
| 68 | Arway-Long Grove Confections | $142.3M | 350 | 70 |
| 69 | arway confections, inc | $142.3M | 350 | 70 |
| 70 | 37th street bakery, llc | $142.3M | 350 | 70 |
| 71 | eats formerly process expo | $142.3M | 350 | 70 |
| 72 | east balt us llc | $142.3M | 350 | 70 |
| 73 | Process Expo | $142.3M | 350 | 70 |
| 74 | Tempel a Worthington Steel Company | $140.7M | 345 | 70 |
| 75 | F.H. Paschen | $137.1M | 350 | 70 |
| 76 | Tokio Marine Highland | $128.6M | 350 | 70 |
| 77 | Repair Ventures, LLC | $128.6M | 350 | 70 |
| 78 | Ryan Specialty Underwriting Managers | $128.6M | 350 | 70 |
| 79 | Innotech Benefit Solutions | $128.6M | 350 | 70 |
| 80 | Enrollment Resources Group | $128.6M | 350 | 70 |
| 81 | OneDigital Advanced Health | $128.6M | 350 | 70 |
| 82 | Clearcover | $128.6M | 350 | 70 |
| 83 | AGMI Insurance | $128.6M | 350 | 70 |
| 84 | Sextant International | $125.9M | 350 | 70 |
| 85 | lawter, inc | $122.7M | 750 | 70 |
| 86 | levy food service ltd partnership | $122.7M | 3,000 | 70 |
| 87 | waterton (formerly ultima hospitality) | $121.9M | 3,000 | 70 |
| 88 | American Carbide Tools | $115.6M | 350 | 70 |
| 89 | baker tilly (formerly holtz rubenstein reminick llp) | $109.7M | 3,000 | 70 |
| 90 | baker tilly (formerly parentebeard) | $109.7M | 3,000 | 70 |
| 91 | Proxima Global LLP | $109.7M | 350 | 70 |
| 92 | four seasons heating, air conditioning and plumbing | $101.7M | 750 | 70 |
| 93 | Superior Graphite | $101.2M | 350 | 70 |
| 94 | Keystone Aniline Corporation | $101.2M | 350 | 70 |
| 95 | Anacostia Rail Holdings | $96.0M | 350 | 60 |
| 96 | Premier Rail Collection | $96.0M | 350 | 60 |
| 97 | The Grane Companies | $96.0M | 350 | 60 |
| 98 | Summit Expedited Logistics (now AIT Truckload Solutions) | $96.0M | 350 | 60 |
| 99 | IIK TRANSPORT INC | $96.0M | 350 | 60 |
| 100 | San Fam Holdings | $95.8M | 125 | 60 |