| Abbreviation | Definition |
|---|---|
| LOILY | Lundin Oil, A. B. (delisted) |
| LOIS | Loislaw.Com (delisted) |
| LOJN | Lo Jack Corporation |
| LOLB | Lollands Bank |
| LONDY | London International Group, P. L. C. |
| LONF | London Financial Corporation |
| LOOK | Looksmart, LTD. |
| LORFF | Lorus Therapeutics, Inc. |
| LORL | Loral Space & Communications, LTD. |
| LORX | Loronix Information Systems, Inc. |
| LOUD | LoudEye Technologies |
| LPAC | Laser Pacific Media Corporation |
| LPFC | Lotus Pacific, Inc. |
| LPHL | LeisurePlanet Holdings |
| LPHLU | LeisurePlanet Holdings |
| LPHLW | LeisurePlanet Holdings Warrants |
| LPHLZ | LeisurePlanet Holdings |
| LPHM | Lee Pharmaceuticals |
| LPNT | Lifepoint Hospitals, Inc. |
| LPRO | Legend Properties, Inc. |