| Abbreviation | Definition |
|---|---|
| NGAS | Daugherty Resources, Inc. |
| NGCP | Northgate Computer Corporation |
| NGEGO | New York State Electric & Gas Corporation |
| NGEN | Nanogen, Inc. |
| NGLA | Northern Glacier, LTD., of Delaware |
| NGLD | NewGold, Inc. |
| NGPS | Novatel, Inc. |
| NGRD | Ener Grid, Inc. |
| NGRU | NetGuru, Inc. |
| NGWY | NetGateway, Inc. |
| NHAL | National Healthcare Alliance |
| NHAN | NHancement Technologies, Inc. |
| NHCH | Newmark Homes Corporation |
| NHCI | National Home Centers, Inc. |
| NHCMF | N H C Communications |
| NHEI | New Horizon Education, Inc. |
| NHHC | National Home Health Care |
| NHLT | National Health & Safety |
| NHRS | Niche Resources, Inc. |
| NHTB | New Hampshire Thrift Bancshares Preferred |