| Name | Ticker | Type | ISIN code |
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| 012 SMILE.COMMUNICATIONS LTD. | SMLC | Stock | |
| 1-800 FLOWERS.COM. | FLWS | Stock | US68243Q1067 |
| 1ST CONSTITUTION BANCORP (NJ) | FCCY | Stock | US31986N1028 |
| 1ST INDEPENDENCE FINANCIAL GROUP. | FIFG | Stock | US32053S1078 |
| 1ST PACIFIC BANCORP (CA) | FPBN | Stock | |
| 1ST SOURCE CORPORATION | SRCE | Stock | US3369011032 |
| 21ST CENTURY HOLDING COMPANY | TCHC | Stock | US90136Q1004 |
| 3COM CORPORATION | COMS | Stock | US8855351040 |
| 3D SYSTEMS CORPORATION | TDSC | Stock | US88554D2053 |
| 3SBIO INC. ADR | SSRX | Stock | |
| 51JOB. ADR | JOBS | Stock | US3168271043 |
| 8X8 INC | EGHT | Stock | US2829141009 |
| AAON, INC. | AAON | Stock | US0003602069 |
| AASTROM BIOSCIENCES. | ASTM | Stock | US00253U1079 |
| ABAXIS, INC. | ABAX | Stock | US0025671050 |
| ABER | ABER | Stock | |
| ABIGAIL ADAMS NATIONAL BANCORP. | AANB | Stock | US0033901010 |
| ABINGTON BANCORP. | ABBC | Stock | US00350R1068 |
| ABIOMED, INC. | ABMD | Stock | US0036541003 |
| ABRAXIS BIOSCIENCE INC. | ABII | Stock | |
| ABXA0 | ABXA0 | Stock | |
| ACACIA RESEARCH CORPORATION | ACTG | Stock | US0038813079 |
| ACADIA PHARMACEUTICALS INC. | ACAD | Stock | US0042251084 |
| ACCELRYS, INC. | ACCL | Stock | US00430U1034 |
| ACCENTIA BIOPHARMACEUTICALS. | ABPI | Stock | US00430L1035 |