| Abbreviation | Definition |
|---|---|
| HRBC | Harbinger Corporation |
| HRBF | Harbor Federal Bancorp, Inc. |
| HRBT | Hudson River Bancorp, Inc. |
| HRCT | Hartcourt Companies, Inc. |
| HRDG | Harding Lawson Associates Group |
| HRFD | Harford National Bank of Aberdeen, Maryland |
| HRLY | Herley Industries, Inc. |
| HRLYW | Herley Industries, Inc. Warrants |
| HRLYZ | Herley Industries, Inc. |
| HRMI | Health Risk Management, Inc. |
| HRMN | Harmon Industries, Inc. |
| HRSH | Hirsch International Corporation |
| HRSL | Hirsch Electronics Corporation |
| HRTB | Heartland Bancshares, Inc. |
| HRVE | Harvey Electronics, Inc. |
| HRVEW | Harvey Electronics, Inc. Warrants |
| HRVY | Harvey Entertainment Company |
| HRZB | Horizon Financial Corporation |
| HRZI | Harschfeger Industries, Inc. |
| HSAC | High Speed Access Corporation (delisted) |