| 1 | PPRX | ConocoPhillips Co. | added 10/2003; 7/2005 | | NAKINA |
| 2 | PPRX | Phillips Petroleum Co. | added 1/2001; eliminated 10/2003 | | NAKINA |
| 3 | PPRX | Potash Reduction Co., Inc. | 8/1920-7/1923 | | NAKINA |
| 4 | PPRX | Phillips Petroleum Co. | added 1/2001 | | NRHS |
| 5 | PPRX | *POTASH REDUCTION CO., INC. | | | PWRC |
| 6 | PPRX | +CONOCOPHILLIPS CO. [PHILLIPS PETROLEUM COMPANY] | | | PWRC |
| 7 | PPRX | Phillips Petroleum | | | RSRV |
| 8 | PPRX | CONOCOPHILLIPS COMPANY | | | SCAC4 |
