| IAH | Internet Architecture HOLDRs | 8 |
| IBB | iShares Nasdaq Biotechnology Index Fund | 5 |
| IBM | International Business Machines | 3 |
| ICN | ICN Pharmaceuticalsm Inc. | 6 |
| ICOS | Icos Corporation | 6 |
| IDCC | Interdigital Communications Corporation | 5 |
| IDPH | IDEC Pharmaceuticals Inc. | 6 |
| IDTI | Integrated Device Technology, Inc. | 7 |
| IGEN | IGEN International, Inc. | 7 |
| IGT | International Game Technology | 5 |
| IMCL | ImClone Systems, Inc. | 2 |
| IMGN | ImmunoGen, Inc. | 5 |
| IMMU | Immunomedics Inc. | 5 |
| INCY | Incyte Genomics Inc | 8 |
| INET | Instinet Group Inc. | 5 |
| INTC | Intel Corporation | 6 |
| INTU | Intuit Inc. | 4 |
| INVN | InVision Technologies, Inc. | 5 |
| IP | International Paper Co. | 9 |
| IPG | The Interpublic Group of Companies, Inc. | 1 |
| IRF | International Rectifier Corp. | 8 |
| ISIL | Intersil Corporation | 6 |
| ISSX | Internet Security Systems, Inc. | 1 |
| ITMN | InterMune Inc. | 2 |
| ITWO | i2 Technologies, Inc. | 7 |
| IVGN | Invitrogen Corp | 1 |
| IVX | IVAX Corp. | 6 |
| IWOV | Interwoven, Inc. | 7 |
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