| Name | Ticker | Type | ISIN code |
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| H
| H
| Stock | |
| HALIFAX CORP | HX | Stock | |
| HALLWOOD GROUP INCORPORATED (THE) | HWG | Stock | |
| HANOVER CAPITAL MORTGAGE HOLDINGS | HCM | Stock | |
| HAWK CORPORATION | HWK | Stock | |
| HEALTH FITNESS CORP | FIT | Stock | |
| HEARUSA, INC | EAR | Stock | |
| HEMISPHERX BIOPHARMA | HEB | Stock | |
| HENRY BROS. ELECTRONICS | HBE | Stock | |
| HHD | HHD | Stock | |
| HHK | HHK | Stock | |
| HHV | HHV | Stock | |
| HICKS ACQUISITION COMPANY I | TOH | Stock | |
| HICKS ACQUISITION COMPANY I | TOH.U | Stock | |
| HICKS ACQUISITION WT | TOH+ | Warrant | |
| HIGHLANDS ACQ CP WTS | HIA+ | Warrant | |
| HIGHLANDS ACQUISITION CORP | HIA.U | Stock | |
| HIGHLANDS ACQUISITION CORP | HIA | Stock | |
| HILLMAN GR CAP 11.6 | HLM- | Stock | |
| HI-SHEAR TECHNOLOGY CORP | HSR | Stock | |
| HKG | HKG | Stock | |
| HKN, INC | HKN | Stock | |
| HMG/COURTLAND PROPERTIES | HMG | Stock | |
| HONG KONG HIGHPOWER | HPJ | Stock | |
| HOOPER HOLMES, INC | HH | Stock | |
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