| Abbreviation | Definition |
|---|---|
| ISTC | Instructivision, Inc. |
| ISTN | Interstate National Dealer Service |
| ISTNW | Interstate National Dealer Service Warrants |
| ISTR | International Stores.Com |
| ISUME | Summedia.Com, Inc. |
| ISUZY | Isuzu Motors, LTD. |
| ISWI | International Sports Wagering, Inc. |
| ISWIU | International Sports Wagering, Inc. |
| ISWIW | International Sports Wagering, Inc. Warrants |
| ISYS | Integral Systems, Inc., of Maryland |
| ITCC | I T C Learning Corporation |
| ITCD | I T C Deltacom, Inc. |
| ITCP | I T E C Capital Corporation |
| ITDC | International Digital Technologies |
| ITEC | Imaging Technology Corporation |
| ITEOF | I T E C Corporation |
| ITEQ | I T E Q, Inc. |
| ITEX | Itex Corporation |
| ITGR | Integrity, Inc. |
| ITIC | Investors Title Company |