| Abbreviation | Definition |
|---|---|
| SYCD | Syconet.Com, Inc. |
| SYCD | Syconet.Com, Incorporated (de-listed) |
| SYCD | Syconet.Com, Incorporated (de-listed) |
| SYCM | Syscomm International Corporation |
| SYCR | Syncronys Softcorp |
| SYEP | oy Environmental Product |
| SYEP | Soy Environmental Product |
| SYES | Say Yes Foods, Inc. |
| SYES | Say Yes Foods, Incorporated (de-listed) |
| SYES | Say Yes Foods, Incorporated (de-listed) |
| SYEV | Seychelle Environment Technology, Inc. |
| SYEV | Seychelle Environment Technology, Incorporated (de-listed) |
| SYEV | Seychelle Environment Technology, Incorporated (de-listed) |
| SYGR | Synagro Technologies, Inc. |
| SYGR | Synagro Technologies, Incorporated (de-listed) |
| SYGR | Synagro Technologies, Incorporated (de-listed) |
| SYGRW | Synagro Technologies, Inc. Warrants |
| SYGRW | Synagro Technologies, Incorporated Warrants (de-listed) |
| SYGRW | Synagro Technologies, Incorporated Warrants (de-listed) |
| SYKE | Sykes Enterprises, Inc. |