| Rank | Company | Ticker | Industry | Sector | Revenue | Market Cap ($mil) |
| ▲ | | | | | |
| 1 | 3M | MMM | Miscellaneous Manufactur | Diversified Manufact Op | 25,966 | 45,465 |
| 2 | Abbott Laboratories | ABT | Pharmaceuticals | Medical-Drugs | 28,799 | 87,525 |
| 3 | Advance Auto Parts | AAP | Retail | Retail-Auto Parts | 4,998 | 2,985 |
| 4 | Advanced Micro Devices | AMD | Semiconductors | Electronic Compo-Semicon | 6,400 | 2,310 |
| 5 | AECOM Technology | ACM | Engineering&Construction | Engineering/R&D Services | 4,680 | 1,984 |
| 6 | AES | AES | Electric | Electric-Generation | 15,394 | 5,232 |
| 7 | Aetna | AET | Healthcare-Services | Medical-HMO | 30,336 | 11,283 |
| 8 | Affiliated Computer Services | ACS | Computers | Computer Services | 6,272 | 4,215 |
| 9 | AFLAC | AFL | Insurance | Life/Health Insurance | 16,312 | 23,122 |
| 10 | Agco | AG | Machinery-Diversified | Machinery-Farm | 8,438 | 2,923 |
| 11 | Agilent Technologies | A | Electronics | Electronic Measur Instr | 5,739 | 8,796 |
| 12 | Air Products & Chemicals | APD | Chemicals | Industrial Gases | 10,602 | 12,955 |
| 13 | Airgas | ARG | Chemicals | Industrial Gases | 4,373 | 3,258 |
| 14 | AK Steel | AKS | Iron/Steel | Steel-Producers | 7,878 | 1,564 |
| 15 | Alcoa | AA | Mining | Metal-Aluminum | 29,616 | 9,980 |
| 16 | Allegheny Technologies | ATI | Iron/Steel | Steel-Specialty | 5,471 | 2,752 |
| 17 | Allergan | AGN | Pharmaceuticals | Medical-Drugs | 4,437 | 12,343 |
| 18 | Alliant Techsystems | ATK | Aerospace/Defense | Aerospace/Defense-Equip | 4,401 | 2,849 |
| 19 | Allied Waste Industries | AW | Environmental Control | Non-hazardous Waste Disp | 6,193 | 4,703 |
| 20 | Allstate | ALL | Insurance | Multi-line Insurance | 31,816 | 15,812 |
| 21 | Alon USA Energy | ALJ | Oil&Gas | Oil Refining&Marketing | 4,655 | 437 |
| 22 | Altria Group | MO | Agriculture | Tobacco | 21,377 | 39,330 |
| 23 | Amazon.com | AMZN | Internet | E-Commerce/Products | 18,135 | 25,075 |
| 24 | Ameren | AEE | Electric | Electric-Integrated | 7,734 | 7,060 |
| 25 | American Electric Power | AEP | Electric | Electric-Integrated | 14,480 | 13,208 |
| 26 | American Express | AXP | Diversified Finan Serv | Finance-Credit Card | 32,852 | 34,591 |
| 27 | American Financial Group | AFG | Insurance | Multi-line Insurance | 4,253 | 2,728 |
| 28 | American International Group | AIG | Insurance | Multi-line Insurance | 82,233 | 6,480 |
| 29 | AMERIGROUP | AGP | Healthcare-Services | Medical-HMO | 4,427 | 1,496 |
| 30 | Ameriprise Financial | AMP | Diversified Finan Serv | Invest Mgmnt/Advis Serv | 8,179 | 5,136 |
| 31 | AmerisourceBergen | ABC | Pharmaceuticals | Medical-Whsle Drug Dist | 70,374 | 4,919 |
| 32 | Amgen | AMGN | Biotechnology | Medical-Biomedical/Gene | 14,997 | 64,144 |
| 33 | AMR | AMR | Airlines | Airlines | 23,980 | 3,080 |
| 34 | Anadarko Petroleum | APC | Oil&Gas | Oil Comp-Explor&Prodtn | 14,445 | 16,394 |
| 35 | Anheuser-Busch | BUD | Beverages | Brewery | 17,133 | 46,450 |
| 36 | Anixter International | AXE | Telecommunications | Networking Products | 6,170 | 1,237 |
| 37 | Aon | AOC | Insurance | Insurance Brokers | 7,791 | 11,884 |
| 38 | Apache | APA | Oil&Gas | Oil Comp-Explor&Prodtn | 13,447 | 27,845 |
| 39 | Apple | AAPL | Computers | Computers | 32,479 | 98,595 |
| 40 | Applied Materials | AMAT | Semiconductors | Semiconductor Equipment | 8,453 | 17,857 |
| 41 | Archer Daniels Midland | ADM | Agriculture | Agricultural Operations | 78,148 | 15,669 |
| 42 | Arrow Electronics | ARW | Electronics | Electronic Parts Distrib | 17,090 | 2,112 |
| 43 | ArvinMeritor | ARM | Auto Parts&Equipment | Auto/Trk Prts&Equip-Orig | 7,039 | 436 |
| 44 | Asbury Automotive Group | ABG | Retail | Retail-Automobile | 5,175 | 122 |
| 45 | Ashland | ASH | Chemicals | Chemicals-Specialty | 8,391 | 1,519 |
| 46 | Assurant | AIZ | Insurance | Multi-line Insurance | 8,564 | 3,151 |
| 47 | AT&T | T | Telecommunications | Telephone-Integrated | 123,301 | 172,547 |
| 48 | Atmos Energy | ATO | Gas | Gas-Distribution | 6,783 | 2,147 |
| 49 | Automatic Data Processing | ADP | Commercial Services | Commercial Serv-Finance | 8,804 | 18,387 |
| 50 | Autonation | AN | Retail | Retail-Automobile | 16,725 | 1,349 |