| Abbreviation | Definition |
|---|---|
| TTT | Tactical Trend Trading |
| TUFF | Towards Ultimate Financial Freedom |
| TWQ | Tower Semiconductor, LTD. Options |
| TWSE | The Taiwan Stock Exchange |
| TXS | Salomon Smith Barney Holdings Index |
| TXS | Toronto Stock Exchange |
| TXZ | Triax CaRTS III Trust |
| TY | Total Yield |
| TYC | Tycoon |
| TYX | Thirty Year Bond index |
| TZC | Trizec Canada |
| TZQ | TranSwitch Corporation Options |
| UAM | Unit Asset Management |
| UBJ | Universal Bite Jumper |
| UEX | UEX Corporation |
| UFO | Unbelievable Financial Opportunity |
| UFO | Unlimited Financial Opportunity |
| UGD | Unigold, Inc. |
| UHH | Horizon Offshore Inc. options |
| UIA | Uncovered Interest Arbitrage |