| Abbreviation | Definition |
|---|---|
| DAYR | Day Runner, Inc. |
| DAYTL | Dayton Power & Light Company |
| DAYTP | Dayton Power & Light Company Preferred |
| DBCC | Data Broadcasting Corporation |
| DBDH | Diamond Bay Holdings |
| DBDY | Doubleday, Inc. |
| DBHL | Diamond Bay Holdings |
| DBII | Digital Biometrics, Inc. |
| DBLE | Double Eagle Petroleum & Mining Company |
| DBLEW | Double Eagle Petroleum & Mining Company Warrants |
| DBOT | Demegen, Inc. |
| DBRN | Dress Barn, Inc. |
| DBRSY | De Beers Consolidated Mines, LTD. |
| DBSS | D B S Industries, Inc. |
| DCAI | Dailysis Corporation of America, Inc. |
| DCAIW | Dailysis Corporation of America, Inc. Warrants |
| DCAP | D C A P Group, Inc. |
| DCBF | D C B Financial Corporation |
| DCBI | Delphos Citizens Bancorp |
| DCBK | Desert Community Bank |