| Rank | Company | Ticker | Industry | Sector | Revenue | Market Cap ($mil) |
| ▲ | | | | | |
| 451 | UGI | UGI | Gas | Gas-Distribution | 6,394 | 2,745 |
| 452 | Union Pacific | UNP | Transportation | Transport-Rail | 17,881 | 35,166 |
| 453 | Unisys | UIS | Computers | Computer Services | 5,489 | 487 |
| 454 | United Parcel Service | UPS | Transportation | Transport-Services | 52,181 | 55,677 |
| 455 | United States Steel | X | Iron/Steel | Steel-Producers | 23,787 | 4,794 |
| 456 | United Stationers | USTR | Distribution/Wholesale | Distribution/Wholesale | 4,962 | 851 |
| 457 | United Technologies | UTX | Aerospace/Defense | Aerospace/Defense-Equip | 58,896 | 54,423 |
| 458 | Unitedhealth Group | UNH | Healthcare-Services | Medical-HMO | 79,437 | 27,612 |
| 459 | Universal American | UAM | Insurance | Life/Health Insurance | 4,580 | 689 |
| 460 | Universal Health Services | UHS | Healthcare-Services | Medical-Hospitals | 5,015 | 2,085 |
| 461 | Unum Group | UNM | Insurance | Life/Health Insurance | 10,302 | 6,112 |
| 462 | URS | URS | Engineering&Construction | Engineering/R&D Services | 7,802 | 2,663 |
| 463 | USG | USG | Building Materials | Bldg&Construct Prod-Misc | 4,827 | 1,490 |
| 464 | Valero Energy | VLO | Oil&Gas | Oil Refining&Marketing | 129,022 | 11,535 |
| 465 | Verizon Communications | VZ | Telecommunications | Telephone-Integrated | 96,549 | 92,628 |
| 466 | VF | VFC | Apparel | Apparel Manufacturers | 7,686 | 6,232 |
| 467 | Viacom | VIA.B | Media | Multimedia | 14,630 | 13,450 |
| 468 | Visa | V | Commercial Services | Commercial Serv-Finance | 6,263 | 50,531 |
| 469 | Visteon | VC | Auto Parts&Equipment | Auto/Trk Prts&Equip-Orig | 10,733 | 80 |
| 470 | W.R. Berkley | WRB | Insurance | Property/Casualty Ins | 4,936 | 4,269 |
| 471 | Wachovia | WB | Banks | Super-Regional Banks-US | 48,336 | 14,425 |
| 472 | Wal-Mart | WMT | Retail | Retail-Discount | 397,347 | 220,814 |
| 473 | Walgreen | WAG | Retail | Retail-Drug Store | 59,034 | 25,343 |
| 474 | Walt Disney | DIS | Media | Multimedia | 37,328 | 48,650 |
| 475 | Washington Post | WPO | Media | Publishing-Newspapers | 4,424 | 4,217 |
| 476 | Waste Management | WMI | Environmental Control | Non-hazardous Waste Disp | 13,641 | 16,061 |
| 477 | Weatherford International | WFT | Oil&Gas Services | Oil-Field Services | 9,158 | 12,504 |
| 478 | Wellcare Health Plans | WCG | Healthcare-Services | Medical-HMO | 5,095 | 1,042 |
| 479 | Wellpoint | WLP | Healthcare-Services | Medical-HMO | 61,743 | 20,151 |
| 480 | Wells Fargo | WFC | Banks | Super-Regional Banks-US | 54,111 | 116,608 |
| 481 | WESCO International | WCC | Distribution/Wholesale | Distribution/Wholesale | 6,170 | 849 |
| 482 | Western Digital | WDC | Computers | Computers-Memory Devices | 8,417 | 3,944 |
| 483 | Western Refining | WNR | Oil&Gas | Oil Refining&Marketing | 10,555 | 482 |
| 484 | Western Union | WU | Commercial Services | Commercial Serv-Finance | 5,300 | 11,191 |
| 485 | Weyerhaeuser | WY | Forest Products&Paper | Forestry | 10,314 | 8,090 |
| 486 | Whirlpool | WHR | Home Furnishings | Appliances | 19,917 | 3,603 |
| 487 | Whole Foods Market | WFMI | Food | Food-Retail | 7,908 | 1,542 |
| 488 | Williams Companies | WMB | Pipelines | Pipelines | 11,836 | 12,171 |
| 489 | Winn-Dixie Stores | WINN | Food | Food-Retail | 7,336 | 790 |
| 490 | Wisconsin Energy | WEC | Electric | Electric-Integrated | 4,379 | 4,990 |
| 491 | World Fuel Services | INT | Retail | Retail-Petroleum Prod | 17,897 | 678 |
| 492 | WW Grainger | GWW | Distribution/Wholesale | Distribution/Wholesale | 6,869 | 6,158 |
| 493 | Wyeth | WYE | Pharmaceuticals | Medical-Drugs | 23,249 | 46,683 |
| 494 | Wyndham Worldwide | WYN | Lodging | Hotels&Motels | 4,402 | 1,573 |
| 495 | Xcel Energy | XEL | Electric | Electric-Integrated | 11,099 | 8,183 |
| 496 | Xerox | XRX | Office/Business Equip | Office Automation&Equip | 18,120 | 7,072 |
| 497 | XTO Energy | XTO | Oil&Gas | Oil Comp-Explor&Prodtn | 6,625 | 19,056 |
| 498 | Yahoo! | YHOO | Internet | Web Portals/ISP | 7,234 | 18,658 |
| 499 | YRC Worldwide | YRCW | Transportation | Transport-Truck | 9,360 | 336 |
| 500 | Yum! Brands | YUM | Retail | Retail-Restaurants | 11,158 | 14,137 |