| 1 | USSX | United States of America | 7/1923 | | NAKINA |
| 2 | USSX | United States Sugar Corp. | 1/1943-4/1961; eliminated 1/1965 | | NAKINA |
| 3 | USSX | United States Steel Corp. | added 10/1977; 1/1980; eliminated 7/1987 | | NAKINA |
| 4 | USSX | Aristech Chemical Corp. | added 7/1987; eliminated 7/1988 | | NAKINA |
| 5 | USSX | United States Steel Corp. | added 1/2004; eliminated 7/2004; 7/2005 (not listed) | | NAKINA |
| 6 | USSX | United States Sugar Corp. | 1/52-4/61; eliminated 1/65 | | NRHS |
| 7 | USSX | United States Steel Corp. | 1/80; eliminated 7/87 | | NRHS |
| 8 | USSX | Aristech Chemical Corp. | added 7/87; eliminated 7/88 | | NRHS |
| 9 | USSX | *UNITED STATES OF AMERICA | | | PWRC |
| 10 | USSX | *UNITED STATES SUGAR CORP. | | | PWRC |
| 11 | USSX | +U.S. STEEL CORP. (ARISTECH CHEMICAL CORP.) | | | PWRC |
| 12 | USSX | United States Steel | | | RSRV |
| 13 | USSX | UNITED STATES STEEL CORPORATION | | | SCAC4 |
| 14 | USSX | U.S.Steel Co. | | USA | TRAFFIC |
