| 1 | GENX | General Electric Rail Services Corp. | added 1/2000; 7/2000-7/2005 | | NAKINA |
| 2 | GENX | General Electric Railcar Services Corp. | added 10/1988; 1/1994; eliminated 1/2000 | | NAKINA |
| 3 | GENX | Gentner Packing Co., Inc. | added 7/1969; 4/1970; eliminated 4/1974; 1/1975-1/1980 | | NAKINA |
| 4 | GENX | Gentner Packing Co., Inc. | added 7/69; 4/70; eliminated 4/74; 1/75-1/80 | | NRHS |
| 5 | GENX | General Electric Railcar Services Corp. | added 10/88; 1/94; eliminated 1/2000 | | NRHS |
| 6 | GENX | General Electric Rail Services Corp. | added 1/2000; 7/2000 | | NRHS |
| 7 | GENX | *GENTNER PACKING CO., INC. | | | PWRC |
| 8 | GENX | +GE RAIL SERVICES {NATX) [GE RAILCAR SERVICES CORPORATION} | | | PWRC |
| 9 | GENX | GE Rail Services | | | RSRV |
| 10 | GENX | GENERAL ELECTRIC RAILCAR SERVICES C | | | SCAC4 |