| 1 | ENPX | Enterprise Products Co. | added 1/1970; 4/1970-1/1980; eliminated 1/1985 | | NAKINA |
| 2 | ENPX | Enterprise Petroleum Co., Inc. | added 1/1969; eliminated 1/1970 | | NAKINA |
| 3 | ENPX | Enterprise Petroleum Co., Inc. | added 1/69; eliminated 1/70 | | NRHS |
| 4 | ENPX | Enterprise Products Co. | added 1/70; 4/70-1/80; eliminated 1/85 | | NRHS |
| 5 | ENPX | ENTERPRISE PRODUCTS COMPANY | | | PWRC |
| 6 | ENPX | Enterprise Products | | | RSRV |