| Company Name |
Symbol |
| Andersons, Inc. (The) |
ANDE |
| Anesiva, Inc. |
ANSV |
| Angeion Corporation |
ANGN |
| AngioDynamics, Inc. |
ANGO |
| Angiotech Pharmaceuticals, Inc. |
ANPI |
| Anglo American plc |
AAUK |
| Anika Therapeutics Inc. |
ANIK |
| Animal Health International, Inc. |
AHII |
| Annapolis Bancorp Inc. |
ANNB |
| Answers Corporation |
ANSW |
| ANSYS, Inc. |
ANSS |
| Antigenics Inc. |
AGEN |
| APAC Customer Services, Inc. |
APAC |
| APCO Argentina Inc. |
APAGF |
| Apogee Enterprises, Inc. |
APOG |
| Apollo Group, Inc. |
APOL |
| APP Pharmaceuticals |
APPX |
| Appalachian Bancshares, Inc. (GA) |
APAB |
| Apple Inc. |
AAPL |
| Appliance Recycling Centers of America, Inc. |
ARCI |
| Applied Energetics, Inc |
AERG |
| Applied Materials, Inc. |
AMAT |
| Applied Micro Circuits Corporation |
AMCC |
| Applied Signal Technology, Inc. |
APSG |
| Approach Resources Inc. |
AREX |
| Arabian American Development Company |
ARSD |
| Arbinet-thexchange, Inc. |
ARBX |
| Arc Sight, Inc. |
ARST |
| Arc Wireless Solutions, Inc. |
ARCW |
| Arch Capital Group Ltd. |
ACGL |
| 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 |
| Aries Maritime Transport Limited |
RAMS |
| 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 |
| Artes Medical, Inc. |
ARTE |
| Artesian Resources Corporation |
ARTNA |
| ArthroCare Corporation |
ARTC |
| Aruba Networks, Inc. |
ARUN |
| ARYx Therapeutics, Inc. |
ARYX |
| Ascent Solar Technologies, Inc. |
ASTI |
| Ashworth, Inc. |
ASHW |
| AsiaInfo Holdings, Inc. |
ASIA |
| ASM International N.V. |
ASMI |
| ASML Holding N.V. |
ASML |
| Aspect Medical Systems, Inc. |
ASPM |
| 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 |
| Asyst Technologies, Inc. |
ASYT |
| ATA Inc. |
ATAI |
| ATC Technology Corporation |
ATAC |
| athenahealth, Inc. |
ATHN |
| AtheroGenics, Inc. |
AGIX |
| 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 America, Inc. |
ATLS |
| Atmel Corporation |
ATML |
| ATMI Inc. |
ATMI |
| ATP Oil & Gas Corporation |
ATPG |
| AtriCure, Inc. |
ATRC |
| 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 |
| Autodesk, Inc. |
ADSK |
| Auxilium Pharmaceuticals, Inc. |
AUXL |
| Avalon Pharmaceuticals, Inc. |
AVRX |
| Avanex Corporation |
AVNXD |
| Avanir Pharmaceuticals |
AVNR |
