| 1 | KGLX | Exelon Generation Co., LLC | added 10/2006 | | NAKINA |
| 2 | KGLX | Commonwealth Edison Co. | added 10/1999; 7/2000-7/2005; eliminated 10/2006 | | NAKINA |
| 3 | KGLX | Commonwealth Edison Co. | added 10/99; 7/2000 | | NRHS |
| 4 | KGLX | EXELON GENERATING CO. LLC [COMMONWEALTH EDISON CO.] | | | PWRC |
| 5 | KGLX | Commonwealth Edison | | | RSRV |
| 6 | KGLX | EXELON GENERATION COMPANY LLC | | | SCAC4 |
