| 3dfx Interactive | San Jose | 1994 |
| A+E Global Media | New York City | 1984 |
| Akamai Technologies | Cambridge, Massachusetts | 1998 |
| Albemarle Corporation | Baton Rouge | 1994 |
| Alcon Entertainment | Los Angeles | 1997 |
| Alexion Pharmaceuticals | Cheshire | 1992 |
| Alliant Techsystems | Arlington County | 1990 |
| Allstate | Northbrook | April 17, 1931 |
| American Axle | Detroit | 1994 |
| American International Group | New York City | 1919 |
| American LaFrance | Summerville | 1873 |
| American Megatrends | Norcross | 1985 |
| American Tower Corporation | Boston | 1995 |
| Ameriprise Financial | Minneapolis | 1894 |
| Amkor Technology | Tempe | 1968 |
| AMR Corporation | Fort Worth | October 1, 1982 |
| Anheuser-Busch | St. Louis | 1852 |
| Apollo Global Management | Solow Building | 1990 |
| Apollo Group | Phoenix | 1973 |
| Apple Inc. | Cupertino | April 1, 1976 |
| ARCO | Los Angeles | 1966 |
| Arctic Cat | Plymouth | June 1960 |
| Arris Group | Suwanee | 1995 |
| Ashland Inc. | Covington | 1924 |
| Ashton-Tate | Torrance | August 1980 |
| AT&T | Dallas | October 5, 1983 |
| Automatic Data Processing | Roseland | 1949 |
| Avatar Press | Rantoul | 1996 |
| Avid Technology | Burlington | 1987 |
| Bank of America | Charlotte | 1784 |
| Barrett Firearms Manufacturing | Christiana | 1982 |
| Baskin-Robbins | Canton | 1945 |
| Beats Electronics | Culver City | 2006 |
| BellSouth | Atlanta | 1984 |
| Ben & Jerry's | South Burlington | 1978 |
| Benchmark | Menlo Park | 1995 |
| Berkshire Hathaway | Omaha | 1839 |
| Best Buy | Richfield | August 22, 1966 |
| Black Diamond Equipment | Holladay | December 1, 1989 |
| Blackstone Inc. | New York City | 1985 |
| Blockbuster LLC | Dallas | 1985 |
| Bloomberg L.P. | New York City, 731 Lexington Avenue | October 1, 1981 |
| BMC Software | Houston | 1980 |
| Booking Holdings | Norwalk | July 1997 |
| Borders Group | Ann Arbor | 1971 |
| BorgWarner | Auburn Hills | 1880 |
| Bose Corporation | Framingham | 1964 |
| Boston Scientific | Marlborough | June 29, 1979 |