| Company Name |
Symbol |
| Archipelago Learning, Inc. |
ARCL |
| Arctic Cat Inc. |
ACAT |
| Ardea Biosciences, Inc. |
RDEA |
| Arden Group, Inc. |
ARDNA |
| Arena Pharmaceuticals, Inc. |
ARNA |
| Argo Group International Holdings Ltd. |
AGII |
| ARGON ST, Inc. |
STST |
| ARIAD Pharmaceuticals, Inc. |
ARIA |
| Ariba, Inc. |
ARBA |
| Ark Restaurants Corp. |
ARKR |
| Arkansas Best Corporation |
ABFS |
| ARM Holdings, plc |
ARMH |
| Arotech Corporation |
ARTX |
| ArQule, Inc. |
ARQL |
| Array BioPharma Inc. |
ARRY |
| Arris Group Inc |
ARRS |
| Arrow Financial Corporation |
AROW |
| Arrowhead Research Corporation |
ARWR |
| Art Technology Group, Inc. |
ARTG |
| Art's-Way Manufacturing Co., Inc. |
ARTW |
| Artesian Resources Corporation |
ARTNA |
| ArthroCare Corporation |
ARTC |
| Aruba Networks, Inc. |
ARUN |
| ARYx Therapeutics, Inc. |
ARYX |
| Ascent Media Corporation |
ASCMA |
| Ascent Solar Technologies, Inc. |
ASTI |
| AsiaInfo Holdings, Inc. |
ASIA |
| ASM International N.V. |
ASMI |
| ASML Holding N.V. |
ASML |
| Aspen Technology, Inc. |
AZPN |
| AspenBio Pharma, Inc. |
APPY |
| Asset Acceptance Capital Corp. |
AACC |
| Associated Banc-Corp |
ASBC |
| Asta Funding, Inc. |
ASFI |
| Astea International, Inc. |
ATEA |
| Astec Industries, Inc. |
ASTE |
| Astro-Med, Inc. |
ALOT |
| Astronics Corporation |
ATRO |
| Astrotech Corporation |
ASTC |
| Asure Software Inc |
ASUR |
| ATA Inc. |
ATAI |
| ATC Technology Corporation |
ATAC |
| athenahealth, Inc. |
ATHN |
| Athens Bancshares Corporation |
AFCB |
| Atheros Communications, Inc. |
ATHR |
| Athersys, Inc. |
ATHX |
| Atlantic American Corporation |
AAME |
| Atlantic BancGroup Inc |
ATBC |
| Atlantic Coast Federal Corporation |
ACFC |
| Atlantic Southern Financial Group, Inc. |
ASFN |
| Atlantic Tele-Network, Inc. |
ATNI |
| Atlas Air Worldwide Holdings |
AAWW |
| Atlas Energy, Inc. |
ATLS |
| Atmel Corporation |
ATML |
| ATMI Inc. |
ATMI |
| ATP Oil & Gas Corporation |
ATPG |
| AtriCure, Inc. |
ATRC |
| Atrinsic, Inc. |
ATRN |
| ATRION Corporation |
ATRI |
| ATS Medical, Inc. |
ATSI |
| Auburn National Bancorporation, Inc. |
AUBN |
| AudioCodes Ltd. |
AUDC |
| Audiovox Corporation |
VOXX |
| AuthenTec, Inc. |
AUTH |
| Authentidate Holding Corp. |
ADAT |
| Autobytel Inc. |
ABTL |
| AutoChina International Limited |
AUTC |
| Autodesk, Inc. |
ADSK |
| Automatic Data Processing, Inc. |
ADP |
| Auxilium Pharmaceuticals, Inc. |
AUXL |
| Avago Technologies Limited |
AVGO |
| Avanir Pharmaceuticals, Inc |
AVNR |
| Avatar Holdings Inc. |
AVTR |
| AVEO Pharmaceuticals, Inc. |
AVEO |
| AVI BioPharma, Inc. |
AVII |
| Aviat Networks, Inc. |
AVNW |
| Avid Technology, Inc. |
AVID |
| Aware, Inc. |
AWRE |
| Axcelis Technologies, Inc. |
ACLS |
| AXT Inc |
AXTI |
