| Nom | Code | Valeur | Code ISIN |
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| SHORT RUSSELL2000 PROSHARES | RWM | Action | |
| SHORT SMALLCAP600 PROSHARES | SBB | Action | |
| SHORT S&P500 PROSHARES | SH | Action | |
| SIFCO INDUSTRIES | SIF | Action | |
| SIGNALIFE, INC | SGN | Action | |
| SINGING MACHINE COMPANY (THE) | SMD | Action | |
| SINOVAC BIOTECH LTD | SVA | Action | |
| SLCT TRUST L-T2003-3 | SXN@C | Obligation | |
| SL INDUSTRIES INC | SLI | Action | |
| SMART MOVE, INC | MVE | Action | |
| SMART MOVE, INC. WTS | MVE+ | Warrant | |
| SMARTPROS LTD | PED | Action | |
| SMM | SMM | Action | |
| SOFTBRANDS, INC | SBN | Action | |
| SOFTWARE HOLDRS | SWH | Action | |
| SOLITARIO RESOURCES CORPORATION | XPL | Action | |
| SOUTH CA EDIS 408 PF | SCE-B | Action | |
| SOUTH CA EDIS 424 PF | SCE-C | Action | |
| SOUTH CA EDIS 431 PF | SCE-D | Action | |
| SOUTH CA EDIS 478 PF | SCE-E | Action | |
| SOUTHERN CONNECTICUT BANCORP | SSE | Action | |
| SOUTHWEST GEORGIA FINANCIAL CORP | SGB | Action | |
| S&P 500 INDEX CALLABLE SUNS | PSZ@E | Obligation | |
| S&P 500 INDEX CAPITAL PROTECTED NOTES | NPS | Action | |
| S&P 500 MARKET INDEX TARGET TERM SECURIT | MCP | Action | |