| Abbreviation | Definition |
|---|---|
| HALS | Sistemahals S |
| HAMP | Hampson Ind. |
| HAN | Hansa Tst Plc |
| HANA | Hansa Tst 'A' |
| HAR | Harvard |
| HAS | Hays |
| HAT | H&t Group Plc |
| HAT | H&T Group, P.L.C. |
| HAWK | Nighthawk |
| HBR | Holidaybreak, P.L.C. |
| HCEG | Healthcare Ent. |
| HCFT | Highcroft Inv. |
| HCL | Hellenic Carr. |
| HCM | Hutchison China MediTech, LTD. |
| HCP | The Hotel Corporation, P.L.C. |
| HDD | Hardide |
| HDIV | Henderson Div. |
| HDT | Holders Tech. |
| HDU | Hardy Under. Bm |
| HDY | Hardy Oil |