| Symbol | Name | Country | Exchange |
|---|---|---|---|
| HNSDF | Hensoldt AG | US | US |
| HNSDF | Hensoldt AG | US | US |
| HNSDF | Hensoldt AG | US | US |
| HNSDF | Hensoldt AG | US | US |
| HNSDF | Hensoldt AG | US | US |
| HNSDF | Hensoldt AG | US | US |
| HOVR | New Horizon Aircraft Ltd | US | US |
| HOVR | New Horizon Aircraft Ltd | US | US |
| HWKE | Hawkeye Systems Inc | US | US |
| HWKE | Hawkeye Systems Inc | US | US |
| HWKE | Hawkeye Systems Inc | US | US |
| HWKE | Hawkeye Systems Inc | US | US |
| HWKE | Hawkeye Systems Inc | US | US |
| HWKE | Hawkeye Systems Inc | US | US |
| HWKE | Hawkeye Systems Inc | US | US |
| HWM | Howmet Aerospace Inc. | US | NYSE |
| HXL | Hexcel Corporation | US | NYSE |
| IMCO | IMCO Industries Ltd | IL | TA |
| ISSC | Innovative Solutions and Support, Inc. | US | NASDAQ |
| IVSO | Invisio Communications AB | SE | ST |