| 1 | HWPC | HOLLAND WIRE PRODUCTS INC | | | SCAC4 |
| 2 | HWPR | HWP RIGGING | | | SCAC4 |
| 3 | HWPX | Hiram Walker & Sons, Inc. | added 1/1965; 7/1965-7/2005; eliminated 7/2007 | | NAKINA |
| 4 | HWPX | Hiram Walker & Sons, Inc. | added 1/65; 7/65-7/2000 | | NRHS |
| 5 | HWPX | HIRAM WALKER & SONS, INC. | | | PWRC |
| 6 | HWPX | Hiram Walker and Sons | | | RSRV |
| 7 | HWPX | WALKER, HIRAM & SONS INC | | | SCAC3 |