| Abbreviation | Definition |
|---|---|
| COHKRG | Cochlear Limited |
| COHKRH | Cochlear Limited |
| COHKRI | Cochlear Limited |
| COHKRJ | Cochlear Limited |
| COHKRK | Cochlear Limited |
| COHKRL | Cochlear Limited |
| COHKRM | Cochlear Limited |
| COHKRS | Cochlear Limited |
| COHKRU | Cochlear Limited |
| COHKRV | Cochlear Limited |
| COHKRX | Cochlear Limited |
| COI | Comet Ridge Ltd |
| COJ | COJ |
| COK | Cockatoo Coal Ltd |
| COM | ComOps Ltd |
| COO | Cosmos Ltd |
| COT | Continuation Investments Limited |
| COU | Count Financial Ltd |
| COY | Coppermoly Ltd |
| COZ | CO2 Group Ltd |