| Abbreviation | Definition |
|---|---|
| CWT | Calloway Real Estate Investment Trust |
| CWW | Claymore S&P Global Water ETF |
| CWW | Claymore Standard & Poors Global Water Exchange Traded Fund |
| CWX | CanWel Building Materials Group Ltd. |
| CX | Cyberplex Inc. |
| CX | Cyberplex Incorporated (de-listed) |
| CX | Cyberplex Incorporated (de-listed) |
| CXA | Consolidated HCI Holdings Corporation |
| CXC | CIX Split Corp. |
| CXC | CIX Split Corporation |
| CXN | Chalice Gold Mines Limited |
| CXS | Counsel Corporation |
| CXX | Crosshair Exploration & Mining Corp. |
| CXX | Crosshair Exploration & Mining Corporation |
| CXY | CryptoLogic Exchange Corporation |
| CYB | Cymbria Corporation |
| CYH | Claymore Global Monthly Advantaged Dividend ETF |
| CYH | Claymore Global Monthly Advantaged Dividend Exchange Traded Fund |
| CYM | Cymat Technologies Ltd. |
| CYM | Cymat Technologies LTD. (de-listed) |