| Abbreviation | Definition |
|---|---|
| GMCR | Green Mountain Coffee, Inc. |
| GMFIY | Goodman Fielder, LTD. |
| GMGC | Generalk Magic, Inc. (delisted) |
| GMRK | Gulfmark Offshore, Inc. |
| GMST | Gemstar International Group, LTD. |
| GMTC | Gametech International, Inc. |
| GMTI | Greenman Technology, Inc. (delisted) |
| GMTIW | Greenman Technologies, Inc. Warrants (delisted) |
| GNBA | Groen Brothers Aviation |
| GNBT | Generex Biotech Corporation |
| GNCMA | General Communications, Inc. Class A |
| GNCMB | General Communications, Inc. Class B |
| GNCNF | Goran Capital, Inc. |
| GNCP | Genesis Capital Corporation |
| GNCPD | Genesis Capital Corporation |
| GNCRY | Gencor, LTD. |
| GNDV | General Devices, Inc. |
| GNDW | Gondwana Energy |
| GNELY | General Electric, P. L. C. |
| GNEN | Generation Entertainment Corporation |