| Nom | Code | Valeur | Code ISIN |
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| INSITE VISION, INC | ISV | Action | |
| INTELLI-CHECK, INC | IDN | Action | |
| INTELLIGENT SYSTEMS CORP | INS | Action | |
| INTER-ATLANTIC FINANCIAL. | IAN | Action | |
| INTER-ATLANTIC FINANCIAL. | IAN.U | Action | |
| INTER-ATLANTIC FIN W | IAN+ | Warrant | |
| INTERLEUKIN GENETICS | ILI | Action | |
| INTERNATIONAL ABSORBENTS | IAX | Action | |
| INTERNATIONAL ROYALTY CORPORATION | ROY | Action | |
| INTERNATIONAL TOWER HILL MINES LTD | THM | Action | |
| INTERNET ARCHITECTURE HOLDRS | IAH | Action | |
| INTERNET HOLDRS | HHH | Action | |
| INTERNET INFRASTRUCTURE HOLDRS | IIH | Action | |
| INTEROIL CORPORATION | IOC | Action | |
| INVERNESS MEDICAL INNOVATIONS | IMA | Action | |
| INVERNESS MED PFD B | IMA-B | Action | |
| INVESTORS CAPITAL HOLDINGS, LTD | ICH | Action | |
| IPARTY CORP | IPT | Action | |
| IPATH EXCHANGE TRADED NOTES LINKED TO TH | BWV | Action | |
| ISCO INTERNATIONAL | ISO | Action | |
| ISHARES COMEX GOLD TRUST | IAU | Action | |
| ISHARES IBOXX $ HIGH YIELD CORPORATE BON | HYG | Action | |
| ISHARES KLD 400 SOCIAL INDEX FUND | DSI | Action | |
| ISHARES LEHMAN MBS FIXED-RATE BOND FUND | MBB | Action | |
| ISHARES NASDAQ BIOTECHNOLOGY | IBB | Action | |