| Abbreviation | Definition |
|---|---|
| HMC | Honda Motor, LTD. |
| HME | Home Properties of New York, Inc. |
| HMK | Ha-Lo Industries, Inc. |
| HMN | Horace Mann Educators Corporation |
| HMT | Host Marriott Corporation |
| HMTPA | Host Marriott Corporation Preferred A |
| HMTPB | Host Marriott Corporation Preferred B |
| HMX | HartMarx Corporation |
| HMY | Harmony Gold Mining, Ltd. (formerly Heilig Myers Company) |
| HNI | Hon Industries, Inc. |
| HNP | Huaneng Power International, Inc. |
| HNZ | H. J. Heinz Company |
| HOE | Hoechst, A. G. |
| HON | Honeywell International, Inc. |
| HOT | Starwood Hotels & Resorts |
| HP | Helmerich & Payne, Inc. |
| HPC | Hercules, Inc. |
| HPCPA | Hercules Trust I |
| HPG | Heritage Propane Partners, L. P. |
| HPS | Healthplan Services Corporation |