| Abbreviation | Definition |
|---|---|
| OCENY | O C E, N. V. |
| OCFC | Oceanfirst Financial |
| OCGT | O C G Technology, Inc. |
| OCLR | Ocular Sciences, Inc. |
| OCRS | O C R Systems, Inc. |
| OCSB | Oswego County Bancorp, Inc. |
| OCTAW | Octagon, Inc. Warrants (de-listed) |
| OCTAW | Octagon, Inc. Warrants |
| OCTAW | Octagon, Inc. Warrants (de-listed) |
| OCTS | Octus, Inc. |
| OCTSW | Octus, Inc. Warrants |
| OCTSW | Octus, Inc. Warrants (de-listed) |
| OCTSW | Octus, Inc. Warrants (de-listed) |
| ODDE | Odds N Ends, Inc. |
| ODDS | Sport of Kings, Inc. |
| ODETA | Odetics, Inc. Class A |
| ODETB | Odetics, Inc. Class B |
| ODFL | Old Dominion Freight Lines |
| ODSA | Odessa Foods International, Inc. |
| ODSI | O D S Networks, Inc. |