| Abbreviation | Definition |
|---|---|
| MGLI | Magellan Industries, Inc. |
| MGLN | MagellanTechnologies, Inc. |
| MGLO | Media Globo Corporation |
| MGLT.OB | Magnolia Solar Corporation |
| MGNT | Maginet Corporation |
| MGRC | McGrath RentCorp |
| MGRP | Morton Industrial Group, Inc. |
| MGTC | Megatech Corporation |
| MGXI | MicroGrafx, Inc. |
| MHAN | Michigan Rivet Corporation |
| MHBC | Michigan Heritage Bancorp, Inc. |
| MHBTW | Managed Health Benefits Warrants |
| MHCO | Moore Handley, Inc. |
| MHLL | Mason Hill Holdings |
| MHMY | M. H. Meyerson & Company, Inc. |
| MHTX | Manhattan Scientifics, Inc. |
| MHUT | Medi- Hut Company, Inc. |
| MICA | Microage, Inc. |
| MICC | Millicom International Cellular |
| MICE | Micel Corporation |