| Abbreviation | Definition |
|---|---|
| PNEC | Planet Entertainment Corporation |
| PNET | Phon-Net.Com, Inc. |
| PNFT | Penn Traffic Company |
| PNFT | Penn Traffic Company (de-listed) |
| PNFT | Penn Traffic Company (de-listed) |
| PNFTW | Penn Traffic Company Warrants |
| PNFTW | Penn Traffic Company Warrants (de-listed) |
| PNFTW | Penn Traffic Company Warrants (de-listed) |
| PNII | Performance Nutrition, Inc. |
| PNJA | Panja, Inc. |
| PNLK | Pro Net Link Corporation |
| PNNW | Pennichuck Corporation |
| PNOD | Pacific Northwest Development Corporation |
| PNOF | Penncore Financial Services Company |
| PNPC | Pana Petrol |
| PNRA | Panera Bread Company |
| PNRG | PrimeEnergy Corporation |
| PNTA | Pentastar Communications |
| PNTE | Pointe Financial Corporation |
| PNTGF | Petromet Resources, LTD. |