| Abbreviation | Definition |
|---|---|
| IFIN | Investors Financial Services Corporation |
| IFLO | I Flow Corporation |
| IFLY | 800 Travel Systems, Inc. |
| IFLYW | 800 Travel Systems, Inc. Warrants |
| IFMX | Informix Corporation |
| IFNC | InTrust Financial Corporation |
| IFNY | Infinity, Inc. |
| IFNYW | Infinity, Inc. Warrants |
| IFNYZ | Infinity, Inc. |
| IFRS | I F R Systems, Inc. |
| IFSB | Independence Federal Savings Bank |
| IFSC | Interferon Sciences, Inc. |
| IFSH | I F S International, Inc. |
| IFSHW | I F S International, Inc. Warrants |
| IFSIA | Interface, Inc. Class A |
| IFST | Iowa First Bancshares |
| IFTI | Ionic Fuel Technology, Inc. |
| IFUE | International Fuel Technology |
| IFX | Infineon Technologies |
| IGAF | Jade Financial Corporation |