| Motorola, Inc. |
5,818 |
| The Allstate Corporation |
5,307 |
| The Boeing Company |
5,298 |
| DePaul University |
4,811 |
| CDW Corporation |
4,127 |
| Kraft Foods Inc. |
4,084 |
| Loyola University Medical Center |
3,049 |
| National Association of Realtors |
2,801 |
| Baker & McKenzie LLP |
2,491 |
| Coldwell Banker Residential Brokerage |
2,476 |
| Takeda Pharmaceuticals North America, Inc. |
2,471 |
| Marquette University |
2,403 |
| Illinois Institute of Technology |
2,362 |
| Northwestern University |
2,356 |
| Tribune Company |
2,209 |
| Walgreen Co. |
2,180 |
| Kirkland & Ellis LLP |
2,108 |
| National-Louis University |
2,022 |
| Koenig & Strey GMAC Realtors |
1,946 |
| City Colleges of Chicago |
1,909 |
| Community Unit School District 300 |
1,854 |
| Roosevelt University |
1,831 |
| Jones Lang LaSalle Incorporated |
1,817 |
| Mayer Brown |
1,701 |
| Sidley Austin LLP |
1,655 |
| Johnson Controls, Inc. |
1,617 |
| McDermott, Will & Emery |
1,617 |
| American Academy of Dermatology |
1,489 |
| Kenosha Unified School District |
1,470 |
| Baird |
1,463 |
| Joliet Junior College |
1,451 |
| Exelon Corporation |
1,406 |
| Hewitt Associates, Inc. |
1,306 |
| Columbia College Chicago |
1,299 |
| Kohl's Corporation |
1,273 |
| Winston |
1,270 |
| Zurich Financial |
1,181 |
| YMCA of the USA (National Headquarters) |
1,177 |
| Katten Muchin Rosenman LLP |
1,120 |
| Rockwell Automation, Inc. |
1,094 |
| Blue Cross and Blue Shield of Illinois |
1,090 |
| College of DuPage |
1,075 |
| CNA Financial Corporation |
1,060 |
| Locke Lord Bissell |
1,051 |
| Board of Education of The City of Chicago |
1,016 |
| Hospira, Inc. |
986 |
| University of Wisconsin Milwaukee |
963 |
| Keller Graduate School of Management |
947 |
| UAL Corporation |
935 |
| Forsythe Technology, Inc. |
931 |
| OfficeMax, Inc. |
919 |
| Northfield Twp High School District 225 |
897 |
| Seyfarth Shaw LLP |
884 |
| Schneider Electric |
867 |
| The School of the Art Institute of Chicago |
861 |
| Robert W. Baird |
848 |
| Tellabs, Inc. |
847 |
| Oswego 308 Community Unit School District |
839 |
| Maine Township High School District 207 |
837 |
| West Bend School District |
828 |
| State of Illinois |
810 |
| Discover Financial Services |
803 |
| U.S. Foodservice, Inc. |
754 |
| Duneland School Corporation |
741 |
| Starcom MediaVest Group |
734 |
| Anixter International Inc. |
733 |
| Marshall & Ilsley Corporation |
726 |
| Waukesha Public Schools |
726 |
| Elgin Community College |
720 |
| Saint Xavier University |
713 |
| Waubonsee Community College |
698 |
| glenbard HS |
698 |
| Molex Incorporated |
685 |
| Thornton Township High School District 205 |
683 |
| Township High School District 211 |
681 |
| Northern Illinois University |
673 |
| Harley-Davidson, Inc. |
665 |
| True Value Company |
659 |
| TransUnion, LLC |
656 |
| Niles Township Community High School District 219 |
656 |
| ArcelorMittal |
652 |
| Ace Hardware Corporation |
647 |
| College of Lake County |
624 |
| Hudson Highland Group |
613 |
| Coppin State University |
612 |
| Navistar International Corporation |
607 |
| USG Corporation |
603 |
| United States Cellular Corporation |
601 |
| GE Healthcare |
600 |
| Stevenson High School |
597 |
| Edelman |
590 |
| Aurora HealthCare |
590 |
| Argonne National Laboratory (ANL) |
574 |
| North Park University |
568 |
| UW - Whitewater |
550 |
| Jenner |
538 |
| Evangelical Lutheran Church in America |
531 |
| The University of Chicago Graduate School of Business |
504 |
| Alverno College |
500 |
| Wm. Wrigley Jr. Company |
497 |
| School District U-46 |
489 |
| Elmbrook School District |
489 |
| Navigant Consulting, Inc. |
487 |
| William Blair & Company, L.L.C. |
484 |
| Rush University Medical Center |
483 |
| NorthShore University HealthSystem |
470 |
| Dominican University |
467 |
| Carthage College |
466 |
| Alzheimer's Disease and Related Disorders Association, Inc. |
457 |
| S.C. Johnson & Son, Inc. |
452 |
| Underwriters Laboratories Inc. |
450 |
| FMC Technologies, Inc. |
450 |
| USF Corporation |
450 |
| NiSource Inc. |
446 |
| Medical College of Wisconsin |
444 |
| Fermi National Accelerator Laboratory (FNAL) |
434 |
| Sycamore Community Unit School District 427 |
434 |
| Astellas Pharma US, Inc |
433 |
| New Trier High School |
431 |
| Intercall, Inc. |
430 |
| Milwaukee School of Engineering |
428 |
| Blue Cross Blue Shield Association |
417 |
| Naperville Community Unit School District 203 |
414 |
| Milwaukee Public Schools |
413 |
| Panduit Corp. |
413 |
| Follett Corporation |
409 |
| Oak Park |
406 |
| Axiom Associates, Inc. |
405 |
| LW District 210 |
405 |
| IDEX Corporation |
404 |
| Smurfit-Stone Container |
403 |
| Lake Forest College |
401 |
| University of Chicago Hospitals |
399 |
| Oak Creek-Franklin Sch Dist |
398 |
| CNH Global N.V. |
396 |
| Milwaukee Journal Sentinel |
393 |
| GATX Corporation |
390 |
| Securitas Security Services USA |
381 |
| McColly Real Estate - India Castaneda |
377 |
| AAR Corp. |
374 |
| Rexam Beverage Can Americas Inc. |
373 |
| Snap-on Incorporated |
372 |
| The Quaker Oats Company |
370 |
| Children's Memorial Hospital |
369 |
| Blue Cross Blue Shield of Texas Inc. |
365 |
| SPSS Inc. |
362 |
| Packaging Corporation of America |
361 |
| Nuveen Investments, Inc. |
360 |
| Lovells |
360 |
| @ properties |
360 |
| Carroll University |
358 |
| United Stationers Inc. |
357 |
| NAVTEQ Corporation |
356 |
| Kaneland CUSD 302 |
349 |
| Nalco Company |
344 |
| Huron Consulting Group Inc. |
343 |
| Morningstar, Inc. |
340 |
| Briggs & Stratton Corporation |
329 |
| Tenneco Inc. |
322 |
| Equity Office Properties Trust |
322 |
| Township High School District 214 |
321 |
| UOP LLC |
320 |
| Leo Burnett Worldwide, Inc. |
319 |
| Brady Corporation |
319 |
| Valley View Community Unit School District 365U |
318 |
| Wisconsin Energy Corporation |
315 |
| Concordia University Chicago |
312 |
| Alberto-Culver Company |
307 |
| Siemens Healthcare Diagnostics |
306 |
| Illinois Valley Community College |
305 |
| PSAV Presentation Services |
299 |
| Chapman and Cutler LLP |
295 |
| Brunswick Corporation |
295 |
| Quad/Graphics, Inc. |
290 |
| Dwight D Eisenhower High Schl |
290 |
| Solo Cup Company |
288 |
| East Aurora School District #131 |
286 |
| Medline Industries, Inc. |
282 |
| Leyden Community High Schl Dst |
282 |
| Indian Prairie School District 204 |
281 |
| Elkhorn Area Sch Dist |
281 |
| Provena Health |
279 |
| Classified Ventures |
279 |
| Community High School District 128 |
279 |
| American Bar Association |
278 |
| American Library Association |
277 |
| Kishwaukee College |
276 |
| UHY Advisors, Inc. |
271 |
| Ryerson, Inc. |
263 |
| Unitrin, Inc. |
260 |
| Equity Residential |
259 |
| St John's Evangelical Lutheran |
258 |
| JohnsonDiversey, Inc. |
257 |
| Rubloff |
257 |
| Neal, Gerber & Eisenberg LLP |
255 |
| Century 21 Pro-Team - Blumhardt |
253 |
| American Hospital Association |
252 |
| SmithBucklin Corporation |
247 |
| University of Illinois |
246 |
| Valparaiso University |
246 |
