| Abbreviation | Definition |
|---|---|
| PSFC | Peoples- Sidney Financial Corporation |
| PSFD | Pinnacle Oil International, Inc. |
| PSFI | P S Financial, Inc. |
| PSFT | PeopleSoft, Inc. |
| PSHPZ | P S H Master L. P. I. |
| PSII | P S I Industries, Inc. |
| PSIIE | P S I Industries, Inc. |
| PSIOF | Psion, LTD. |
| PSIT | P S I Technologies Holdings |
| PSIX | PSINet, Inc. |
| PSIXP | PSI Net |
| PSMT | PriceSmart, Inc. |
| PSNRY | asifik Satelit Nusantara |
| PSNRY | Pasifik Satelit Nusantara |
| PSNXE | Pacific Snax Corporation |
| PSOFE | Prism Software Corporation |
| PSOKM | Public Service Company of Oklahoma |
| PSOKN | Public Service Company of Oklahoma |
| PSON | Paul Son Gaming Corporation |
| PSPLP | Puget Sound Energy, Inc. |