| Cycos AG (YOS) FRA - Deutsche Börse Frankfurt Stock Exchange | |
| Cycos AG (YOS) ETR - Deutsche Börse XETRA | |
| Cyfrowy Polsat SA (CPS) WSE - Warsaw Stock Exchange | |
| Cymat Technologies Ltd. (CYM) CVE - Toronto TSX Ventures Exchange | |
| Cymat Technologies Ltd. (CYM) TSE - Toronto Stock Exchange | |
| Cymbria Corporation (CYB) TSE - Toronto Stock Exchange | |
| Cynapsus Therapeutics Inc (CTH) CVE - Toronto TSX Ventures Exchange | |
| Cynata Therapeutics Ltd (CYP) ASX - Australian Securities Exchange | |
| Cynotech Holdings Limited (CYT) NZE - New Zealand Stock Exchange | |
| Cypress Hills Resource Corp (CHY.H) CVE - Toronto TSX Ventures Exchange | |
| Cyrela Commercial Propertes SA Emp Partp (CCPR3) BVMF - Bovespa Stock Exchange | |
| CytoTools AG (T5O) FRA - Deutsche Börse Frankfurt Stock Exchange | |
| CytoTools AG (T5O) ETR - Deutsche Börse XETRA | |
| Cytori Therapeutics Inc. (XMPA) FRA - Deutsche Börse Frankfurt Stock Exchange | |
| Cytori Therapeutics Inc (XMPA) ETR - Deutsche Börse XETRA | |