| Company Name |
Symbol |
| Amazon.com, Inc. |
AMZN |
| Ambassadors Group, Inc. |
EPAX |
| Ambient Corporation |
AMBT |
| AMC Networks Inc. |
AMCX |
| Amedisys Inc |
AMED |
| Amerco |
UHAL |
| Ameriana Bancorp |
ASBI |
| America First Tax Exempt Investors, L.P. |
ATAX |
| America Movil, S.A.B. de C.V. |
AMOV |
| America's Car-Mart, Inc. |
CRMT |
| American Capital Agency Corp. |
AGNC |
| American Capital Mortgage Investment Corp. |
MTGE |
| American Capital, Ltd. |
ACAS |
| American Caresource Holdings Inc |
ANCI |
| American Electric Technologies, Inc. |
AETI |
| American Independence Corp. |
AMIC |
| American Learning Corporation |
ALRN |
| American National Bankshares, Inc. |
AMNB |
| American National Insurance Company |
ANAT |
| American Pacific Corporation |
APFC |
| American Public Education, Inc. |
APEI |
| American Railcar Industries, Inc. |
ARII |
| American Realty Capital Properties, Inc. |
ARCP |
| American River Bankshares |
AMRB |
| American Science and Engineering, Inc. |
ASEI |
| American Software, Inc. |
AMSWA |
| American Superconductor Corporation |
AMSC |
| American Woodmark Corporation |
AMWD |
| Amerigon Incorporated |
ARGN |
| Ameris Bancorp |
ABCB |
| AMERISAFE, Inc. |
AMSF |
| AmeriServ Financial Inc. |
ASRV |
| Ameristar Casinos, Inc. |
ASCA |
| Ameritrans Capital Corporation |
AMTC |
| Ames National Corporation |
ATLO |
| Amgen Inc. |
AMGN |
| Amicus Therapeutics, Inc. |
FOLD |
| Amkor Technology, Inc. |
AMKR |
| Ampal-American Israel Corporation |
AMPL |
| Ampio Pharmaceuticals, Inc. |
AMPE |
| Amsurg Corp. |
AMSG |
| Amtech Systems, Inc. |
ASYS |
| AmTrust Financial Services, Inc. |
AFSI |
| Amylin Pharmaceuticals, Inc. |
AMLN |
| Amyris, Inc. |
AMRS |
| Anacor Pharmaceuticals, Inc. |
ANAC |
| ANADIGICS, Inc. |
ANAD |
| Analogic Corporation |
ALOG |
| Analysts International Corporation |
ANLY |
| Anaren, Inc. |
ANEN |
| Ancestry.com, Inc. |
ACOM |
| Anchor Bancorp |
ANCB |
| Andatee China Marine Fuel Services Corporation |
AMCF |
| Angeion Corporation |
ANGN |
| Angie's List, Inc. |
ANGI |
| AngioDynamics, Inc. |
ANGO |
| Anika Therapeutics Inc. |
ANIK |
| Annapolis Bancorp Inc. |
ANNB |
| ANSYS, Inc. |
ANSS |
| Anthera Pharmaceuticals, Inc. |
ANTH |
| Apco Oil and Gas International Inc. |
APAGF |
| API Technologies Corp. |
ATNY |
| Apogee Enterprises, Inc. |
APOG |
| Apollo Group, Inc. |
APOL |
| Apple Inc. |
AAPL |
| Appliance Recycling Centers of America, Inc. |
ARCI |
| Applied Materials, Inc. |
AMAT |
| Applied Micro Circuits Corporation |
AMCC |
| Approach Resources Inc. |
AREX |
| Apricus Biosciences, Inc |
APRI |
| Arabian American Development Company |
ARSD |
| Arc Wireless Solutions, Inc. |
ARCW |
| ARCA biopharma, Inc. |
ABIO |
| Arch Capital Group Ltd. |
ACGL |
| 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 |
| 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's-Way Manufacturing Co., Inc. |
ARTW |
| Artesian Resources Corporation |
ARTNA |
| ArthroCare Corporation |
ARTC |
| Aruba Networks, Inc. |
ARUN |
| ASB Bancorp, Inc. |
ASBB |
| Ascena Retail Group, Inc. |
ASNA |
| Ascent Capital Group, Inc. |
ASCMA |
| Ascent Solar Technologies, Inc. |
ASTI |
| Asia Entertainment & Resources Ltd |
AERL |
