| Abbreviation | Definition |
|---|---|
| PHSY | Pacificare Health Systems, Inc. |
| PHSYP | Pacificare Health Systems, Inc. |
| PHTM | Photomatrix, Incorporated |
| PHTN | Photon Dynamics, Inc. |
| PHTO | Photon Technology International |
| PHVP | Philip Services Corporation |
| PHWY | Pathway Corporation |
| PHXI | Phoenix International Life |
| PHXT | Phoenix Medical Technology |
| PHXU | Phoenix International Industries |
| PHXX | Phoenix International, LTD. |
| PHXX | Phoenix International, LTD., Inc. |
| PHYC | Phycor, Inc. |
| PHYX | Physiometrix, Inc. |
| PICK | Pick Communications Corporation |
| PICM | Professionals Group, Inc. |
| PICO | P I C O Holdings, Inc. |
| PIDN | Peoples Bank Corporation Indianapolis |
| PIED | Piedmont Mining Company, Inc. |
| PIFI | PiedMonte Foods, Inc. |