| Abbreviation | Definition |
|---|---|
| QZB | Able Telcom Holding Corporation options |
| QZL | SDL, Inc. options |
| QZQ | Leap Wireless options |
| QZR | Q-Zar Inc. |
| QZS | USN Communications, Inc. options |
| QZX | Neoforma, Inc. options |
| RAL | Rydex Asset Level |
| RAM | Relationship Asset Management |
| RAM | Reverse Annuity Mortgage |
| RAMS | Registered Australian Mortgage Securities |
| RANB | Ranbaxy Laboratories, LTD. |
| RANB.BO | Ranbaxy Laboratories, Ltd. |
| RAPS | Ram Air Performance System |
| RAT | Risk Averse Trader |
| RBM | Response Biomedical Corporation |
| RBP | Rainbow Group of Companies, Inc. |
| RBQ | RCN Corporation options |
| RCT | Roller Coaster Tycoon |
| RE | Rate of Exchange (or Exchange Rate) |
| RE | Russian Exchange |