| Name | Ticker | Type | ISIN code |
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| S1 CORPORATION | SONE | Stock | US78463B1017 |
| SABA SOFTWARE, INC. | SABA | Stock | US7849326001 |
| SAFETY INSURANCE GROUP. | SAFT | Stock | US78648T1007 |
| SAIA, INC. | SAIA | Stock | US81111T1025 |
| SALARY.COM | SLRY | Stock | |
| SALEM COMMUNICATIONS CORPORATION | SALM | Stock | US7940931048 |
| SALIX PHARMACEUTICALS, LTD. | SLXP | Stock | US7954351067 |
| SANDERS MORRIS HARRIS GROUP. | SMHG | Stock | US80000Q1040 |
| SANDERSON FARMS. | SAFM | Stock | US8000131040 |
| SANDISK CORPORATION | SNDK | Stock | US80004C1018 |
| SANDY SPRING BANCORP. | SASR | Stock | US8003631038 |
| SANGAMO BIOSCIENCES. | SGMO | Stock | US8006771062 |
| SANMINA-SCI CORPORATION | SANM | Stock | US8009071072 |
| SANTARUS, INC. | SNTS | Stock | US8028173040 |
| SANTOS, LTD. ADR | STOSY | Stock | US8030216092 |
| SAPIENS INTERNATIONAL CORPORATION N.V. | SPNS | Stock | ANN7716A1513 |
| SAPIENT CORPORATION | SAPE | Stock | US8030621085 |
| SATCON TECHNOLOGY CORPORATION | SATC | Stock | US8038931064 |
| SAVANNAH BANCORP. (THE) | SAVB | Stock | US8047481010 |
| SAVIENT PHARMACEUTICALS INC | SVNT | Stock | US80517Q1004 |
| SAVVIS, INC. | SVVS | Stock | |
| SBA COMMUNICATIONS CORPORATION | SBAC | Stock | US78388J1060 |
| SCANSOURCE, INC. | SCSC | Stock | US8060371072 |
| SCBT FINANCIAL CORPORATION | SCBT | Stock | US78401V1026 |
| SCHMITT INDUSTRIES. | SMIT | Stock | US8068702005 |