| C3 Ai | 125 | $1,976,026 |
| Caa | 110 | $1,094,358 |
| Caci | 244 | $324,894 |
| Caci International | 150 | $263,398 |
| Cadence Bank | 162 | $281,036 |
| California State University | 130 | $188,335 |
| Calpine | 175 | $307,583 |
| Calportland | 148 | $354,322 |
| Caltech | 151 | $508,539 |
| Caltrans | 112 | $108,504 |
| Calvin Maintenance | 311 | $80,975 |
| Cambia Health Solutions | 157 | $237,598 |
| Canadian National | 111 | $34,405 |
| Capgemini | 110 | $127,958 |
| Capital Bluecross | 105 | $64,332 |
| Capital Group | 229 | $4,702,527 |
| Capital One | 588 | $1,181,448 |
| Capital One Financial | 285 | $923,716 |
| Capital Research Management | 202 | $463,000 |
| Cardinal Health | 543 | $375,954 |
| Carefirst | 139 | $86,407 |
| Caresource | 272 | $590,051 |
| Cargill | 183 | $222,700 |
| Carnegie Mellon University | 236 | $575,991 |
| Carrier | 164 | $259,405 |
| Case Western Reserve University | 150 | $297,019 |
| Caterpillar | 1,188 | $1,435,163 |
| Cboe Global Markets | 130 | $334,860 |
| Cbp | 233 | $168,001 |
| Cbre | 550 | $1,010,101 |
| Cbs | 156 | $423,887 |
| Ccs | 103 | $104,822 |
| Ccsd | 176 | $85,301 |
| Cdc | 282 | $302,373 |
| Cdw | 119 | $124,317 |
| Cedars Sinai | 133 | $244,150 |
| Cellco Partnership | 387 | $180,460 |
| Cemex | 113 | $203,476 |
| Centene | 1,947 | $2,002,365 |
| Ceo | 195 | $2,112,314 |
| Cgi | 107 | $89,295 |
| Charles Schwab | 294 | $12,477,820 |
| Charter | 1,908 | $2,834,922 |
| Charter Communications | 429 | $798,977 |
| Chase | 145 | $101,899 |
| Cheniere Energy | 175 | $720,723 |
| Chevron | 393 | $1,108,777 |
| Chevron North America Exploration and | 122 | $67,574 |
| Chicago Public Schools | 184 | $150,049 |
| Children S Hospital of Philadelphia | 139 | $206,741 |
| Chrysler | 276 | $111,615 |
| Chs | 308 | $477,279 |
| Chspsc | 170 | $188,222 |
| Chubb | 270 | $452,876 |
| Church | 122 | $87,814 |
| Cigna | 982 | $1,158,802 |
| Cisco | 567 | $778,440 |
| Cisco Systems | 520 | $1,028,752 |
| Citi | 259 | $296,451 |
| Citibank | 123 | $124,688 |
| Citibank N A | 354 | $513,475 |
| Citigroup | 203 | $497,783 |
| Citigroup Global Markets | 113 | $284,837 |
| Citizens Bank | 256 | $393,284 |
| City and County of San Francisco | 183 | $243,103 |
| City National Bank | 113 | $116,322 |
| City of Austin | 141 | $228,686 |
| City of Boston | 111 | $92,173 |
| City of Chicago | 221 | $225,779 |
| City of Hope | 106 | $280,684 |
| City of Houston | 616 | $142,426 |
| City of Los Angeles | 632 | $528,782 |
| City of New York | 420 | $882,221 |
| City of Philadelphia | 127 | $130,955 |
| City of Phoenix | 119 | $200,943 |
| City of Portland | 116 | $87,716 |
| City of San Diego | 101 | $76,637 |
| City of Seattle | 274 | $295,271 |
| City University of New York | 150 | $285,262 |
| Clark County School District | 105 | $59,668 |
| Cleveland Cliffs | 210 | $351,671 |
| Cleveland Clinic | 470 | $684,478 |
| Cme Group | 190 | $452,445 |
| Cms | 132 | $342,003 |
| Cnp Service | 153 | $313,582 |
| Cnx Resources | 107 | $96,415 |
| Cobank | 120 | $138,444 |
| Coca Cola | 262 | $435,526 |
| Cognizant | 133 | $129,221 |
| Cohnreznick | 258 | $306,608 |
| Coinbase | 144 | $3,437,061 |
| Coldwell Banker | 527 | $981,663 |
| Coldwell Banker Realty | 337 | $421,398 |
| College | 120 | $93,802 |
| Colliers | 139 | $310,331 |
| Collins Aerospace | 205 | $199,942 |
| Colorado State University | 164 | $170,217 |
| Columbia University | 854 | $2,994,333 |
| Comcast | 891 | $3,231,688 |
| Comcast Cc of Willow Grove | 2,160 | $2,150,096 |
| Comerica | 379 | $289,847 |
| Commercial Metals | 176 | $95,814 |
| Commonwealth of Ma | 122 | $138,429 |
| Commonwealth of Massachusetts | 267 | $276,799 |
| Commonwealth of Pa | 132 | $134,039 |
| Commonwealth of Pennsylvania | 107 | $181,633 |
| Compass | 669 | $1,012,183 |
| Component Assembly Systems | 119 | $33,521 |
| Conocophillips | 254 | $753,084 |
| Constellation Brands | 104 | $254,690 |
| Constellation Energy Generation | 937 | $1,332,057 |
| Constr Resources of Ny | 121 | $42,218 |
| Construction | 144 | $154,721 |
| Consumers Energy | 223 | $139,738 |
| Continental Resources | 130 | $2,383,085 |
| Contra Costa County | 104 | $91,498 |
| Contractor | 204 | $176,371 |
| Cook County | 117 | $130,211 |
| Cooley | 217 | $963,913 |
| Corecivic | 103 | $740,421 |
| Corewell Health | 207 | $244,543 |
| Cornell University | 485 | $1,198,051 |
| Cornerstone Government Affairs | 145 | $2,655,747 |
| Corning | 499 | $766,963 |
| Corteva | 138 | $154,238 |
| Costco | 401 | $314,528 |
| Costco Wholesale | 122 | $86,802 |
| County | 155 | $104,709 |
| County of Alameda | 152 | $23,088 |
| County of Los Angeles | 3,323 | $442,310 |
| County of Riverside | 368 | $61,127 |
| County of Sacramento | 125 | $18,759 |
| County of San Bernardino | 249 | $32,043 |
| County of San Diego | 103 | $77,627 |
| County of Santa Clara | 148 | $107,570 |
| County of Ventura | 247 | $58,811 |
| Covington Burling | 424 | $2,202,693 |
| Cox Automotive | 826 | $676,831 |
| Cox Communications | 632 | $692,087 |
| Cox Enterprises | 276 | $954,105 |
| Cozen O Connor | 407 | $1,952,842 |
| Cps | 125 | $114,220 |
| Creamer Son J Fletcher | 277 | $100,707 |
| Crowdstrike | 112 | $157,268 |
| Crowe | 351 | $349,647 |
| Crowell Moring | 189 | $771,800 |
| Csu | 105 | $67,625 |
| Csx | 688 | $1,287,376 |
| Ct General Life Insurance | 243 | $334,591 |
| Cummins | 305 | $347,054 |
| Cuny | 405 | $881,149 |
| Cushman Wakefield | 175 | $396,804 |
| Cvs | 358 | $462,088 |
| Cvs Health | 1,188 | $1,638,767 |