| Bethalto, IL | 1ST MIDAMERICA CREDIT UNION | 153 | 4 | 114 |
| Chicago, IL | 1WORLDSYNC, INC. | 228 | 4 | 186 |
| Davie, FL | 815 ENTERTAINMENT, LLC DBA HARD ROCK ROCKFORD | 607 | 7 | 255 |
| Waukegan, IL | A. L. HANSEN MANUFACTURING | 150 | 2 | 80 |
| Abbott Park, IL | ABBOTT LABORATORIES | 34,937 | 10 | 59,172 |
| North Chicago, IL | ABBVIE INC. | 28,567 | 15 | 24,507 |
| Barceloneta, PR | ABBVIE LTD. | 1,326 | 6 | 1,322 |
| Chicago, IL | ABN AMRO CLEARING USA LLC | 215 | 8 | 288 |
| Glenview, IL | ABT ELECTRONICS, INC. | 1,594 | 2 | 910 |
| Burr Ridge, IL | ACCEL ENTERTAINMENT GAMING, LLC | 1,201 | 4 | 770 |
| Chicago, IL | ACCURATE PERFORATING COMPANY | 263 | 5 | 128 |
| Schaumburg, IL | ACCURATE PERSONNEL, LLC | 148 | 6 | 124 |
| Chicago, IL | ACERO CHARTER SCHOOLS INC. | 688 | 3 | 525 |
| Elk Grove Village, IL | ACME INDUSTRIES, INC. | 124 | 3 | 75 |
| Chicago, IL | ADDISON GROUP | 1,763 | 10 | 1,683 |
| Chicago, IL | ADLER UNIVERSITY | 166 | 5 | 131 |
| Franklin, TN | ADVANCED CORRECTIONAL HEALTHCARE, INC. | 297 | 3 | 272 |
| Chicago, IL | ADVANCED PERSONNEL, INC. | 1,285 | 3 | 628 |
| Chicago, IL | AERO US, INC | 120 | 4 | 105 |
| Buffalo Grove, IL | AFFINITIV, INC. | 395 | 3 | 226 |
| Park Forest, IL | AGRATI, INC. | 307 | 8 | 212 |
| Chicago, IL | AHEAD, INC. | 1,619 | 2 | 1,312 |
| Chicago, IL | AIDS FOUNDATION OF CHICAGO | 164 | 8 | 119 |
| Marion, IL | AISIN LIGHT METALS, LLC | 353 | 3 | 353 |
| Chicago, IL | ALFRED BENESCH & COMPANY | 1,099 | 7 | 908 |
| Chicago, IL | ALLIED BENEFIT SYSTEMS | 807 | 8 | 466 |
| Naperville, IL | ALLOYA CORPORATE FEDERAL CREDIT UNION | 192 | 7 | 175 |
| Dallas, TX | ALLSTATE INS CO | 36,456 | 29 | 25,958 |
| Buffalo Grove, IL | ALMA LASERS, INC. | 201 | 3 | 158 |
| Niles, IL | ALP LIGHTING & CEILING PRODUCTS | 171 | 2 | 125 |
| Rosemont, IL | AMERICAN ACADEMY OF DERMATOLOGY | 203 | 9 | 188 |
| Schaumburg, IL | AMERICAN AGRICULTURAL INSURANCE COMPANY | 245 | 2 | 184 |
| Rosemont, IL | AMERICAN ASSOCIATION OF NURSE ANESTHETISTS | 135 | 3 | 126 |
| Chicago, IL | AMERICAN COLLEGE OF SURGEONS | 466 | 5 | 370 |
| Chicago, IL | AMERICAN HEALTH INFORMATION MANAGEMENT ASSOCIATION | 185 | 3 | 141 |
| Chicago, IL | AMERICAN HOSPITAL ASSOCIATION | 484 | 7 | 357 |
| Dekalb, IL | AMERICAN MARKETING & PUBLISHING, LLC | 309 | 5 | 182 |
| Chicago, IL | AMERICAN MEDICAL ASSOCIATION | 1,519 | 7 | 1,008 |
| Schaumburg, IL | AMERICAN SOCIETY OF ANESTHESIOLOGISTS | 151 | 5 | 132 |
| Arlington Heights, IL | AMERICAN SOCIETY OF PLASTIC SURGEONS | 109 | 3 | 78 |
| Schaumburg, IL | AMERICAN VETERINARY MEDICAL ASSOCIATION | 192 | 7 | 131 |
| Naperville, IL | AMERICAN WATER RESOURCES, LLC | 589 | 4 | 449 |
| Chicago, IL | AMLI MANAGEMENT COMPANY | 833 | 2 | 557 |
| Bolingbrook, IL | AMSIVE, LLC | 612 | 5 | 477 |
| Atlanta, GA | AON CORPORATION | 13,112 | 54 | 4,332 |
| Highland, IL | APEX PHYSICAL THERAPY, LLC | 281 | 10 | 188 |
| University Park, IL | APPLIED SYSTEMS, INC. | 1,674 | 4 | 1,275 |
| Decatur, IL | ARCHER DANIELS MIDLAND COMPANY | 9,239 | 18 | 12,769 |
| Dwight, IL | ARENDS HOGAN WALKER, LLC | 692 | 2 | 288 |
| Chicago, IL | ARIEL INVESTMENTS, LLC | 142 | 4 | 150 |
| Chicago, IL | ASPIRA INC OF ILLINOIS | 144 | 3 | 94 |
| Northbrook, IL | ASTELLAS US LLC | 2,724 | 6 | 3,218 |
| Hagerstown, IN | AUTOCAR, LLC | 442 | 3 | 450 |
| Burr Ridge, IL | AUTOMOBILE MECHANICS' LOCAL NO. 701 UNION AND INDUSTRY WELFARE | 5,525 | 5 | 5,594 |
| Rosemont, IL | AVALIGN TECHNOLOGIES, INC. | 944 | 5 | 612 |
| Chicago, IL | AVANT, LLC | 235 | 3 | 160 |
| St. Charles, IL | AWANA CLUBS INTERNATIONAL | 125 | 4 | 97 |
| Union, IL | BAG MAKERS, INC. | 301 | 2 | 234 |
| Chicago, IL | BAIRD & WARNER, INC. | 352 | 5 | 3,003,383 |
| Chicago, IL | BAKER & MCKENZIE LLP | 4,921 | 8 | 1,327 |
| Chicago, IL | BALYASNY ASSET MANAGEMENT LP | 1,329 | 4 | 1,311 |
| Pontiac, IL | BANK OF PONTIAC | 134 | 10 | 75 |
| Chicago Ridge, IL | BANKFINANCIAL NA | 213 | 5 | 141 |
| Eldorado, IL | BANTERRA CORP. | 477 | 3 | 345 |
| Chicago, IL | BARACK FERRAZZANO KIRSCHBAUM & NAGELBERG LLP | 219 | 4 | 185 |
| Northbrook, IL | BARILLA AMERICA, INC | 574 | 8 | 447 |
| University Park, IL | BARREL ACCESSORIES & SUPPLY COMPAN | 135 | 3 | 134 |
| Chicago, IL | BARRY CALLEBAUT U.S.A. | 1,423 | 9 | 955 |
| Oak Brook Terrace, IL | BCS FINANCIAL CORPORATION | 195 | 3 | 154 |
| Chicago, IL | BDO USA, P.C. | 6,667 | 7 | 6,283 |
| Evanston, IL | BEGHOU CONSULTING | 150 | 4 | 126 |
| Chicago, IL | BEL BRANDS USA | 841 | 6 | 629 |
| Rockford, IL | BERGSTROM INC. | 396 | 11 | 4,975 |
| Dakota, IL | BERNER FOOD & BEVERAGE LLC | 657 | 3 | 307 |
| Niles, IL | BGE, LTD. | 417 | 6 | 248 |
| Milan, IL | BLACKHAWK BANK & TRUST | 213 | 5 | 108 |
| Quincy, IL | BLESSING CORPORATE SERVICES, INC. | 2,759 | 10 | 2,412 |
| Vernon Hills, IL | BLITT & GAINES | 356 | 3 | 200 |
| Chicago, IL | BLOMMER CHOCOLATE COMPANY | 606 | 7 | 476 |
| Chicago, IL | BMO FINANCIAL CORP. | 19,704 | 20 | 13,174 |
| Lincoln, IL | BOARD OF TRUSTEES OF CENTRAL ILLINOIS CARPENTERS HEALTH AND WELFARE FU | 1,922 | 4 | 2,092 |
| Downers Grove, IL | BOARD OF TRUSTEES OF CHICAGO AREA IB OF T HEALTH & WELFARE FUND | 1,462 | 3 | 1,474 |
| Chicago, IL | BOARD OF TRUSTEES OF MID-AMERICA CARPENTERS REGIONAL COUNCIL HEALTH FU | 26,745 | 5 | 11,392 |
| Caseyville, IL | BOARD OF TRUSTEES OF THE STEAMFITTERS LOCAL 439 HEALTH & WELFARE FUND | 120 | 3 | 198 |
| Roselle, IL | BOS OF ILLINOIS | 166 | 8 | 101 |
| Chicago, IL | BOUNTEOUS, INC. | 589 | 3 | 507 |
| Westchester, IL | BRAINLAB, INC. | 479 | 7 | 447 |
| Franklin Park, IL | BRETFORD MANUFACTURING, INC. | 116 | 3 | 90 |
| Elmhurst, IL | BRIGHT DIRECTION DENTAL, LLC | 320 | 5 | 158 |
| Cicero, IL | BROADWIND, INC. | 418 | 8 | 334 |
| Mettawa, IL | BRUNSWICK CORPORATION | 15,640 | 11 | 6,696 |
| West Chicago, IL | BUCK SERVICES INC | 183 | 5 | 28 |
| Springfield, IL | BUNN-O-MATIC CORPORATION | 1,088 | 6 | 886 |
| Hoffman Estates, IL | BYSTRONIC INC. | 245 | 4 | 207 |
| Naperville, IL | CALAMOS INVESTMENTS | 403 | 5 | 304 |
| Decatur, IL | CANCER CARE SPECIALISTS OF CENTRAL ILLINOIS, S.C | 190 | 3 | 167 |
| Danville, IL | CANNON COCHRAN MANAGEMENT SERVICES, INC. | 1,299 | 8 | 1,252 |
| Chicago, IL | CANOPIUS US INSURANCE, INC. | 122 | 4 | 101 |
| Schenectady, NY | CAPITAL REGION GAMING LLC DBA RIVERS CASINO AND RESORT SCHENECTADY | 760 | 2 | 641 |
| Itasca, IL | CAPTIVE RESOURCES, LLC | 490 | 4 | 335 |
| Evanston, IL | CARDINAL INTELLECTUAL PROPERTY, INC. | 151 | 3 | 93 |
| St. Charles, IL | CARTONCRAFT, INC. | 193 | 7 | 87 |
| Chicago, IL | CBOE GLOBAL MARKETS, INC. | 1,081 | 4 | 850 |
| Chicago, IL | CBSL TRANSPORTATION SERVICES, INC. | 247 | 2 | 164 |
| Vernon Hills, OR | CDW LLC | 10,809 | 4 | 7,581 |
| Chicago, IL | CENTER FOR RESEARCH IN SECURITY PRICES, LLC | 110 | 6 | 74 |
| Chicago, IL | CENTRAL STEEL & WIRE COMPANY, LLC | 0 | 3 | 267 |
| Des Plaines, IL | CFC, INC. | 122 | 8 | 127 |
| Forest Park, IL | CFDI MANAGEMENT GROUP LLC | 0 | 9 | 12 |
| Quincy, IL | CHADDOCK, INC. | 240 | 5 | 197 |
| Chicago, IL | CHAI TRUST COMPANY, LLC | 113 | 5 | 155 |
| Chicago, IL | CHAPIN HALL CENTER FOR CHILDREN | 141 | 5 | 107 |
| Chicago, IL | CHAPMAN AND CUTLER LLP | 466 | 5 | 288 |
| Chicago, IL | CHICAGO FIRE FOOTBALL HOLDINGS, INC | 379 | 12 | 157 |
| Chicago, IL | CHICAGO MERCANTILE EXCHANGE INC. | 2,246 | 13 | 1,826 |
| Chicago, IL | CHICAGO REVIEW PRESS INC DBA INDEPENDENT PUBLISHERS GROUP | 153 | 9 | 103 |
| Chicago, IL | CHICAGO SUN-TIMES MEDIA, INC. | 118 | 6 | 47 |
| Chicago, IL | CHILDREN'S HOSPITAL OF CHICAGO MEDICAL CENTER | 7,157 | 7 | 4,013 |
| Chicago, IL | CHILDRENS HOME & AID SOCIETY OF IL | 843 | 6 | 533 |
| Chicago, IL | CHINESE AMERICAN SERVICE LEAGUE | 396 | 4 | 111 |
| Chicago, IL | CHOREO, LLC | 189 | 8 | 161 |
| Itasca, IL | CHRIST PANOS FOOD CORPORATION | 169 | 3 | 232 |
| Champaign, IL | CHRISTIE BUSINESS HOLDING COMPANY, P.C. | 305 | 3 | 716 |
| Chicago, IL | CHUHAK & TECSON, P.C. | 117 | 4 | 72 |
| Chicago, IL | CIBC BANCORP USA, INC. | 3,646 | 5 | 2,482 |
| Oak Brook, IL | CIMCO CAPITAL, LLC | 99 | 4 | 96 |
| Chicago, IL | CISION US, INC. | 1,450 | 7 | 795 |
| Hoffman Estates, IL | CLAIRES STORES, INC. | 2,514 | 15 | 1,104 |
| Matteson, IL | CLARENCE DAVIDS & COMPANY | 94 | 4 | 31 |
| Chicago, IL | CLARITY CLINIC | 245 | 6 | 142 |
| Chicago, IL | CLARITY PARTNERS, LLC | 146 | 3 | 82 |
| Chicago, IL | CLARK DIETZ, INC. | 187 | 4 | 136 |
| Saint Charles, IL | CLARKE ENVIRONMENTAL MOSQUITO MANAGEMENT, INC. | 153 | 4 | 105 |
| Chicago, IL | CLASSIC RESIDENCE MANAGEMENT LIMITED PARTNERSHIP VI | 2,347 | 5 | 2,236 |
| Chicago, IL | CLUNE CONSTRUCTION COMPANY, L.P. | 826 | 3 | 749 |
| Glen Carbon, IL | CNB BANK SHARES INC | 206 | 4 | 198 |
| Cary, IL | COILCRAFT, INC. | 473 | 8 | 381 |
| Rosemont, IL | COILPLUS, INC. | 476 | 9 | 360 |
| Chicago, IL | COLSON MEDICAL, LLC | 1,223 | 4 | 1,008 |
| Chicago, IL | COMMUNITY AND ECONOMIC DEVELOPMENT ASSOCIATION OF COOK COUNTY, INC. | 394 | 8 | 288 |
| Chicago, IL | COMPSYCH MANAGEMENT CORPORATION | 1,048 | 4 | 597 |
| Canton, MA | COMPUTERSHARE US SERVICES INC. | 3,296 | 9 | 3,237 |
| Rockford, IL | CONCENTRIC ROCKFORD INC. | 115 | 7 | 103 |
| Schaumburg, IL | CONCEPT SCHOOLS NFP | 427 | 3 | 258 |
| Chicago, IL | CONNECT SEARCH, LLC | 142 | 3 | 142 |
| Mattoon, IL | CONSOLIDATED COMMUNICATIONS HOLDINGS, INC. | 2,731 | 14 | 2,447 |
| Mount Prospect, IL | CONSULTING ENGINEERS GROUP, INC. | 105 | 4 | 94 |
| Hoffman Estates, IL | CONVERGINT TECHNOLOGIES | 5,444 | 7 | 3,957 |
| Downers Grove, IL | COOPER'S HAWK INTERMEDIATE HOLDING, LLC | 9,345 | 10 | 1,350 |
| Aurora, IL | COPLEY MEMORIAL HOSPITAL | 2,544 | 5 | 8,967 |
| Carol Stream, IL | CORECENTRIC SOLUTIONS, INC | 148 | 3 | 76 |
| Elgin, IL | CORPORATE AMERICA FAMILY CREDIT UNION | 157 | 5 | 119 |
| Libertyville, IL | COUNSELING CONNECTION, INC. | 164 | 8 | 123 |
| Chicago, IL | CRAMER KRASSELT | 220 | 5 | 106 |
| East Dubuque, IL | CRESCENT ELECTRIC SUPPLY COMPANY | 2,573 | 5 | 1,213 |
| Buffalo Grove, IL | CROSSCOM NATIONAL, LLC | 78 | 3 | 80 |
| Rockford, IL | CRUSADER COMMUNITY HEALTH | 374 | 3 | 221 |
| Chicago, IL | CSG GOVERNMENT SOLUTIONS INC | 268 | 9 | 185 |
| Chicago, IL | CTC TRADING GROUP, LLC | 719 | 5 | 655 |
| Lisle, IL | CTS CORPORATION EMPLOYEES HEALTH PLAN ASSOCIATION | 326 | 5 | 278 |
| Forest Park, IL | CURFIN MOTORS DBA CURRIE MOTORS GROUP | 333 | 3 | 133 |
| Chicago, IL | CYM LIVING, LLC | 493 | 4 | 200 |
| Chicago, IL | D'ESCOTO, INC. | 138 | 5 | 90 |
| Chicago, IL | DANIEL J. EDELMAN HOLDINGS, INC. | 2,926 | 7 | 1,949 |
| Burr Ridge, IL | DAUBERT INDUSTRIES, INC. | 238 | 4 | 178 |
| Roberts, IL | DCC PROPANE HOLDINGS, INC | 772 | 2 | 568 |
| Houston, TX | DDG, INC. | 834 | 4 | 61 |
| Lisle, IL | DEALER E PROCESS, LLC | 116 | 4 | 91 |
| Chicago, IL | DENTONS US LLP | 1,436 | 29 | 987 |
| Chicago, IL | DEPAUL UNIVERSITY | 2,658 | 4 | 1,620 |
| Boston, MA | DEPT US HOLDING COMPANY, INC. | 817 | 8 | 682 |
| Champaign, IL | DEVELOPMENTAL SERVICES CENTER, INC. | 166 | 6 | 108 |
| Riverwoods, IL | DISCOVER FINANCIAL SERVICES | 20,234 | 17 | 13,923 |
| Chicago, IL | DISTINCTIVE SCHOOLS | 623 | 4 | 405 |
| Naperville, IL | DIVERSIFIED SERVICES NETWORK, INC. | 350 | 3 | 75 |
| Hoffman Estates, IL | DMG MORI USA, INC. | 915 | 8 | 823 |
| St. Charles, IL | DOCTORS DATA, INC. | 127 | 8 | 77 |
| Mt. Sterling, IL | DOT HOLDINGS CO | 7,229 | 15 | 4,763 |
| Downers Grove, IL | DOVER CORPORATION | 12,824 | 6 | 8,774 |
| Chicago, IL | DRW HOLDINGS, LLC | 1,205 | 5 | 988 |
| Downers Grove, IL | DURAVANT LLC | 1,689 | 12 | 1,262 |
| Lisle, IL | DURHAM SCHOOL SERVICES | 15,889 | 6 | 5,166 |
| Chicago, IL | DYSON TECHNOLOGY, INC. | 520 | 4 | 397 |
| Chicago, IL | EAGLE OPERATING CORP. | 100 | 3 | 93 |
| Chicago, IL | EAGLE SEVEN HOLDINGS, LP | 124 | 3 | 93 |
| Peoria, IL | EASTERSEALS CENTRAL ILLINOIS | 146 | 4 | 95 |
| Chicago, IL | ELITE STAFFING, INC. | 4,521 | 6 | 201 |
| Greenup, IL | EMBARRAS RIVER BASIN AGENCY, INC. | 155 | 3 | 76 |
| Moline, IL | EMPEOPLE CREDIT UNION | 234 | 4 | 234 |
| Chicago, IL | ENOVA INTERNATIONAL, INC. | 1,748 | 7 | 1,119 |
| Chicago, IL | EQUITY RESIDENTIAL | 2,508 | 11 | 1,403 |
| Deerfield, IL | ESSENDANT | 2,527 | 11 | 1,903 |
| Westchester, IL | ESSENTRA HOLDINGS CORPORATION | 478 | 3 | 423 |
| Itasca, IL | EUCLID INSURANCE SERVICES, INC. | 157 | 4 | 107 |
| Machesney Park, IL | EXPERITY, INC | 571 | 5 | 427 |
| Oak Brook, IL | FALCON INSURANCE GROUP, LLC | 127 | 4 | 121 |
| Rochester Hills, MI | FANUC AMERICA CORPORATION | 1,637 | 6 | 1,281 |
| Pekin, IL | FARMERS AUTOMOBILE INSURANCE ASSOCIATION | 656 | 5 | 422 |
| Tampa, FL | FAY SERVICING, LLC | 759 | 4 | 572 |
| Moline, IL | FCA, LLC | 569 | 4 | 316 |
| Itasca, IL | FELLOWES, INC. | 669 | 8 | 419 |
| Eldorado, IL | FERRELL HOSPITAL COMMUNITY FOUNDATION | 243 | 3 | 223 |
| Oak Brook, IL | FGM ARCHITECTS INC | 410 | 4 | 148 |
| Northbrook, IL | FIELD MANAGEMENT SERVICES | 184 | 7 | 156 |
| Joliet, IL | FILTRATION GROUP CORPORATION | 2,864 | 7 | 1,719 |
| Downers Grove, IL | FLAVORCHEM CORPORATION | 395 | 6 | 278 |
| Elgin, IL | FLENDER CORPORATION | 182 | 3 | 151 |
| Batavia, IL | FLINN SCIENTIFIC, INC. | 191 | 8 | 126 |
| Chicago, IL | FLYING FOOD GROUP LLC | 3,782 | 16 | 1,000 |
| Mchenry, IL | FOLLETT CONTENT LLC | 495 | 3 | 392 |
| Westchester, IL | FOLLETT CORPORATION | 3,550 | 11 | 1,427 |
| Mchenry, IL | FOLLETT SOFTWARE, LLC | 422 | 3 | 658 |
| Lincolnwood, IL | FOOD FOR THOUGHT ENTERPRISES INC. | 205 | 4 | 83 |
| Deerfield, IL | FORTUNE BRANDS HOME & SECURITY, INC. | 6,297 | 16 | 4,983 |
| Geneva, IL | FOX VALLEY ORTHOPAEDIC ASSOCIATES, S.C. | 296 | 5 | 168 |
| Downers Grove, IL | FTD LLC | 286 | 3 | 258 |
| Harvey, IL | FUCHS CORPORATION | 706 | 6 | 434 |
| Bloomingdale, IL | FUTABA NORTH AMERICA ENGINEERING | 1,444 | 3 | 1,200 |
| Decatur, IL | FUYAO GLASS ILLINOIS, INC. | 366 | 3 | 281 |
| Bolingbrook, IL | G & W ELECTRIC COMPANY | 1,052 | 4 | 815 |
| Chicago, IL | G. H. SMART & COMPANY, LLC | 127 | 3 | 92 |
| Chicago, IL | GADS HILL CENTER | 152 | 3 | 68 |
| Kankakee, IL | GARDANT MANAGEMENT SOLUTIONS INC | 2,779 | 6 | 160 |
| Des Plaines, IL | GAS TECHNOLOGY INSTITUTE | 542 | 6 | 364 |
| Wood Dale, IL | GEBRUDER WEISS, INC. | 202 | 3 | 137 |
| Chicago, IL | GENEVA TRADING USA, LLC | 140 | 3 | 111 |
| Skokie, IL | GEORGIA NUT COMPANY | 250 | 4 | 225 |
| Itasca, IL | GIFT OF HOPE ORGAN & TISSUE DONOR NETWORK | 412 | 5 | 344 |
| Wilmington, DE | GLANBIA, INC. | 3,654 | 20 | 2,513 |
| Minneapolis, MN | GN HEARING CARE CORPORATION | 972 | 6 | 938 |
| Chicago, IL | GOHEALTH LLC | 2,160 | 5 | 1,498 |
| Chicago, IL | GOLD EAGLE COMPANY | 197 | 3 | 166 |
| Schaumburg, IL | GONNELLA BAKING CO. | 625 | 5 | 199 |
| Canton, IL | GRAHAM HOSPITAL ASSOCIATION | 715 | 3 | 496 |
| Chicago, IL | GRANT THORNTON ADVISORS LLC | 6,885 | 12 | 4,170 |
| Oakbrook Terrace, IL | GRAYCOR SERVICES L.L.C. | 173 | 7 | 169 |
| Lagrange, IL | GRAYHILL, INC. | 420 | 7 | 386 |
| Chicago, IL | GROUPON, INC. | 2,435 | 20 | 1,567 |
| Bloomington, IL | GROWMARK INC. | 4,815 | 10 | 4,162 |
| Chicago, IL | GRUBHUB HOLDINGS, INC. | 1,542 | 8 | 1,403 |
| Chicago, IL | GTCR LLC | 192 | 3 | 194 |
| Chicago, IL | GUARANTEED RATE, INC. | 5,492 | 25 | 3,404 |
| Woodridge, IL | GUIDING LIGHT AUTISM ACADEMY, INC. | 175 | 3 | 72 |
| Chicago, IL | H.W. LOCHNER INC | 888 | 6 | 753 |
| Chicago, IL | HAH HOLDINGS, LLC | 2,468 | 5 | 5,148 |
| Chicago, IL | HALLSTAR SERVICES CORP. | 163 | 4 | 152 |
| Wheeling, IL | HANDI FOIL CORPORATION | 264 | 5 | 207 |
| Springfield, IL | HANSON PROFESSIONAL SERVICES INC. | 0 | 4 | 394 |
| Chicago, IL | HARBOR CAPITAL ADVISORS, INC. | 241 | 5 | 215 |
| Grayslake, IL | HARGER INC. | 156 | 3 | 121 |
| Chicago, IL | HARRIS ASSOCIATES L.P. | 224 | 4 | 225 |
| Chicago, IL | HARRY CARAY'S RESTAURANT GROUP | 62 | 2 | 49 |
| Naperville, IL | HARVEST FOOD GROUP, LLC | 202 | 4 | 96 |
| Mendota, IL | HCC, INC. | 237 | 2 | 171 |
| Broadview, IL | HEADCO INDUSTRIES, INC. | 216 | 42 | 163 |
| Lake Forest, IL | HEALTH FITNESS CORPORATION | 0 | 3 | 514 |
| Downers Grove, IL | HEARTHSIDE FOOD SOLUTIONS, LLC | 9,998 | 2 | 4,871 |
| Chicago, IL | HEARTLAND ALLIANCE FOR HUMAN NEEDS & HUMAN RIGHTS | 0 | 8 | 31 |
| Effingham, IL | HEARTLAND DENTAL, LLC | 19,854 | 14 | 11,464 |
| Chicago, IL | HEARTLAND HUMAN CARE SERVICES | 586 | 7 | 347 |
| Chicago, IL | HEITMAN LLC | 296 | 8 | 206 |
| Bedford Park, IL | HELIGEAR ACQUISITION CO. NORTHSTAR AEROSPACE (CHICAGO) INC. | 280 | 3 | 206 |
| Northville, MI | HELLA CORPORATE CENTER USA, INC. | 756 | 6 | 517 |
| Countryside, IL | HELPING HAND CENTER | 200 | 3 | 100 |
| Chicago, IL | HENNESSY AND ROACH, PC | 171 | 4 | 115 |
| Bloomington, IL | HERITAGE OPERATIONS GROUP, LLC | 304 | 3 | — |
| Peoria, IL | HEYL, ROYSTER, VOELKER & ALLEN P.C. | 238 | 4 | 150 |
| Peoria, IL | HGS USA, LLC | 709 | 4 | 93 |
| Northbrook, IL | HILCO TRADING, LLC | 600 | 11 | 492 |
| Chicago, IL | HINSHAW & CULBERTSON LLP | 884 | 10 | 534 |
| Huntley, IL | HIWIN CORPORATION | 111 | 8 | 90 |
| South Elgin, IL | HOFFER PLASTICS CORPORATION | 310 | 4 | 206 |
| Dundee, MI | HOLCIM PARTICIPATIONS (US) INC. | 9,376 | 8 | 6,165 |
| Pittsburgh, PA | HOLDINGS ACQUISITION CO. LP DBA RIVERS CASINO | 1,080 | 3 | 790 |
| Woodridge, IL | HOME RUN INN, INC. | 204 | 3 | 86 |
| Morton, IL | HOMETOWN COMMUNITY BANCORP, INC. | 538 | 4 | 347 |
| Belleville, IL | HOSPICE OF SOUTHERN ILLINOIS, INC. | 101 | 3 | 78 |
| Oakbrook Terrace, IL | HUB INTERNATIONAL LIMITED | 13,200 | 13 | 8,665 |
| Chicago, IL | HUMAN RESOURCES DEVELOPMENT INSTITUTE, INC. | 170 | 4 | 93 |
| Chicago, IL | HUMBOLDT PARK HEALTH | 511 | 4 | 358 |
| Chicago, IL | HURON CONSULTING GROUP INC. | 4,333 | 6 | 3,200 |
| Chicago, IL | HYATT CORPORATION | 28,100 | 36 | 14,611 |
| Sullivan, IL | HYDRO-GEAR LIMITED PARTNERSHIP | 1,032 | 6 | 701 |
| Chicago, IL | HYZON ABC, LLC, A DELAWARE SERIES LLC | 0 | 4 | 13 |
| Hoffman Estates, IL | I-CAR | 309 | 3 | 306 |
| Westchester, IL | IAA HOLDINGS, LLC | 0 | 5 | 4,016 |
| Northbrook, IL | IDEX CORPORATION | 4,165 | 24 | 1,616 |
| Des Plaines, IL | ILLINOIS BONE AND JOINT INSTITUTE, LLC | 1,941 | 5 | 992 |
| Naperville, IL | ILLINOIS CREDIT UNION LEAGUE | 156 | 6 | 99 |
| Bloomington, IL | ILLINOIS NETWORK OF CHILD CARE RESOURCES AND REFERRAL AGENCIES | 230 | 4 | 203 |
| Rock Island, IL | IMEG CONSULTANTS CORP. | 2,308 | 5 | 1,718 |
| Portland, OR | IMPERATIVE LOGISTICS GROUP LLC | 534 | 5 | 341 |
| Bloomington, IL | IMPERIAL OPTIC MIDCO | 2,590 | 7 | 1,132 |
| Gilman, IL | INCOBRASA INDUSTRIES, LTD. | 226 | 3 | 229 |
| League City, TX | INEOS USA, LLC | 3,664 | 6 | 3,069 |
| Chicago, IL | INSIGHT CHICAGO, INC. | 660 | 4 | 627 |
| Flint, MI | INSIGHT MANAGEMENT AND CONSULTING SERVICES, INC | 382 | 3 | 627 |
| Chicago, IL | INSPIRE11 LLC | 265 | 3 | 215 |
| Rosemont, IL | INTELLIGENT MEDICAL OBJECTS, INC. | 303 | 4 | 245 |
| Bannockburn, IL | IPC INTERNATIONAL, INC. DBA IPC. INC. | 106 | 4 | 78 |