| Abbreviation | Definition |
|---|---|
| CMRC | Commerce One, Inc. |
| CMRN | Cameron Financial Corporation |
| CMRO | Comarco, Inc. |
| CMSB | Commonwealth Bancorp, Inc. |
| CMSI | Cryomedical Sciences, Inc. |
| CMSS | Credit Management Solutions, Inc. |
| CMST | Creative Master International, Inc. |
| CMSV | Community Savings Bancshares |
| CMTI | Community Medical Transport, Inc. |
| CMTL | Comtech Telecom Corporation |
| CMTN | Copper Mountain Networks, Inc. |
| CMTO | Com21, Inc. (delisted) |
| CMTV | Community Bancorp, Inc., of Vermont |
| CMTX | Comtex News Network, Inc. |
| CMVT | Comverse Technology, Inc. |
| CMWL | Complete Wellness Centers, Inc. (now CMWLQ) |
| CMWLQ | Complete Wellness Centers, Inc. (in bankruptcy) |
| CMWLW | Complete Wellness Centers, Inc. Warrants |
| CMXBY | Cemex, S. A. Sponsored American Depositary Receipts |
| CMXX | Cimetrix, Inc. |