| 1 | SCNX | Southern Carbon Co. | 7/1923 | | NAKINA |
| 2 | SCNX | Columbian Gasoline Corp. | 7/1932-1/1952; eliminated 1/1954 | | NAKINA |
| 3 | SCNX | General American Transportation Corp. | added 1/1954; eliminated 7/1954 | | NAKINA |
| 4 | SCNX | South Carolina Electric & Gas Co. | added 1/1999; 7/2000-7/2005 | | NAKINA |
| 5 | SCNX | Columbian Gasoline Corp. | 4/38-1/52 | | NRHS |
| 6 | SCNX | South Carolina Electric & Gas Co. | added 1/99; 7/2000 | | NRHS |
| 7 | SCNX | *SOUTHERN CARBON CO. | | | PWRC |
| 8 | SCNX | *COLUMBIAN GASOLINE CORP. (GENERAL AMERICAN TRANSPORTATION CORP.) | | | PWRC |
| 9 | SCNX | +SOUTH CAROLINA ELECTRIC & GAS CO. | | | PWRC |
| 10 | SCNX | South Carolina Electric and Gas | | | RSRV |
| 11 | SCNX | SOUTH CAROLINA ELECTRIC & GAS COMPA | | | SCAC4 |