| Abbreviation | Definition |
|---|---|
| DOMZ | Dominguez Services Corporation |
| DORL | Doral Financial Corporation |
| DORLP | Doral Financial Corporation Preferred |
| DOTK | Delta- Omega Technologies |
| DOTX | Dotronix, Inc. |
| DOVRA | Dover Investment Corporation Class A |
| DOVRB | Dover Investment Corporation Class B |
| DPAC | Dense Pack Microsystems, Inc. |
| DPMI | DuPont Photomasks, Inc. |
| DPPI | Dippy Foods, Inc. |
| DPRSD | Default Proof Credit Card |
| DPTR | Delta Petroleum Corporation |
| DRAD | Digirad Corporation |
| DRAI | Data Research Associates, Inc. |
| DRAM | Dataram Corporation |
| DRAX | Draxis Health, Inc. |
| DRBN | Dearborn Financial Corporation |
| DRCO | Dynamics Research Corporation |
| DRIV | Digital River, Inc. |
| DRMD | DuraMed Pharmaceuticals |