Symbol Description AAC Australia Acquisition AACC Asset Acceptance Capital AACOW Australia Acquisition AAME Atlantic American Corp. AAON Aaon AAPL Apple Inc. AATI Advanced Analogic Technologies AAWW Atlas Air Worldwide Holdings AAXJ MSCI All Country Asia Ex Japan ABAX Abaxis ABCB Ameris Bancorp ABCD Cambium Learning Group ABCO The Advisory Board Company ABFS Arkansas Best Corp. ABIO Arca Biopharma ABMD Abiomed ABTL Autobytel Inc. ABVA Alliance Bankshares Corp. ACAD Acadia Pharmaceuticals Inc. ACAS American Capital ACAT Arctic Cat Inc. ACCL Accelrys ACET Aceto Corp. ACFC Atlantic Coast Federal Corp. ACFN Acorn Energy ACGL Arch Capital Group Ltd ACHC Acadia Healthcare Company Inc. ACHN Achillion Pharmaceuticals ACIW Aci Worldwide ACLS Axcelis Technologies ACNB Acnb Corp. ACOM Ancestry.Com ACOR Acorda Therapeutics ACPW Active Power ACRX Acelrx Pharmaceuticals ACTG Acacia Research Corp. ACTS Actions Semiconductor Co. ACUR Acura Pharmaceuticals ACWI MSCI Acwi ACWX MSCI Acwi Ex US ACXM Acxiom Corp. ADAT Authentidate Holding ADBE Adobe Systems Incorporated ADEP Adept Technology ADES Ada-Es ADGF Adams Golf ADP Automatic Data Processing ADPI American Dental Partners ADRA Bldrs Asia 50 Adr ADRD Bldrs Developed Markets 100 Adr ADRE Bldrs Emerging Markets 50 Adr ADRU Bldrs Europe 100 Adr ADSK Autodesk ADTN Adtran ADUS Addus Homecare Corp. ADVS Advent Software AEGN Aegoin Corp AEGR Aegerion Pharmaceuticals AEHR Aehr Test Systems AEIS Advanced Energy Industries AEPI Aep Industries Inc. AERL Asia Entertainment & Resources Ltd AETI American Electric Technologies AEY Addvantage Technologies Group AEZS Aeterna Zentaris AFAM Almost Family Inc AFCB Athens Bancshares Corp. AFCE Afc Enterprises AFFM Affirmative Insurance Holdings AFFX Affymetrix AFFY Affymax AFOP Alliance Fiber Optic Products AFSI Amtrust Financial Services AGEN Agenus Inc. AGII Argo Group International Holdings Ltd AGNC American Capital Agency AGYS Agilysys AHGP Alliance Holdings Gp L.P. AHPI Allied Healthcare Products AIMC Altra Holdings AINV Apollo Investment Corp. AIRM Air Methods Corp. AIRT Air T AIXG Aixtron Se AKAM Akamai Technologies AKRX Akorn ALCO Alico ALGN Align Technology ALGT Allegiant Travel Company ALIM Alimera Sciences ALKS Alkermes ALLB Alliance Bank ALLT Allot Communications Ltd ALNC Alliance Financial Corp. ALNY Alnylam Pharmaceuticals ALOG Analogic Corp. ALOT Astro-Med ALRN American Learning Corp. ALSK Alaska Communications Systems ALTE Alterra Capital Holdings Ltd ALTH Allos Therapeutics ALTI Altair Nanotechnologies Inc. ALTR Altera Corp. ALVR Alvarion Ltd ALXA Alexza Pharmaceuticals ALXN Alexion Pharmaceuticals AMAG Amag Pharmaceuticals AMAP Autonavi Holdings AMAT Applied Materials AMBT Ambient Corp AMCC Applied Micro Circuits Corp. AMCF Andatee China Marine Fuel Services AMCN Airmedia Group Inc AMCX Amc Networks Inc. AMED Amedisys Inc AMGN Amgen Inc. AMIC American Independence AMKR Amkor Technology AMLN Amylin Pharmaceuticals AMNB American National Bankshares AMOT Allied Motion Technologies AMOV America Movil S.A.B. De C.V. AMPE Ampio Pharmaceutical AMPL Ampal-American Israel Corp. AMRB American River Bankshares AMRI Albany Molecular Research AMRN Amarin Corporation Plc AMRS Amyris AMSC American Superconductor Corp. AMSF Amerisafe AMSG Amsurg AMSWA American Software AMTC Ameritrans Capital Corp. AMTCP Ameritrans Capital Corp. AMTD Td Ameritrade Holding Corp. AMWD American Woodmark Corp. AMZN Amazon.Com ANAC Anacor Pharmaceuticals ANAD Anadigics ANAT American National Insurance ANCB Anchor Bancorp ANCI American Caresource Holdings ANCX Access National Corp. ANDE The Andersons ANEN Anaren ANGI Angie's List Inc. ANGN Angeion Corp. ANGO Angiodynamics ANIK Anika Therapeutics Inc. ANLY Analysts International Corp. ANNB Annapolis Bancorp Inc. ANSS Ansys ANTH Anthera Pharmaceuticals ANTP Phazar Corp AONE A123 Systems AOSL Alpha And Omega Semiconductor APAGF Apco Oil And Gas International APEI American Public Education APFC American Pacific Corp. APKT Acme Packet APOG Apogee Enterprises APOL Apollo Group APPY Aspenbio Pharma APRI Apricus Biosciences Inc APSA Alto Palermo S.A. APWC Asia Pac Wire &Cable ARAY Accuray Incorporated ARBA Ariba ARCC Ares Capital Corp. ARCI Appliance Recycling Centers ARCL Archipelago Learning ARCP American Realty Capital Propert ARCW Arc Wireless Solutions ARDNA Arden Group AREX Approach Resources Inc. ARGN Amerigon Incorporated ARIA Ariad Pharmaceuticals ARII American Railcar Industries ARKR Ark Restaurants ARLP Alliance Resource Partners L.P. ARMH Arm Holdings Plc ARNA Arena Pharmaceuticals AROW Arrow Financial Corp. ARQL Arqule ARRS Arris Group Inc ARRY Array Biopharma Inc. ARSD Arabian American Development ARTC Arthrocare Corp. ARTNA Artesian Resources Corp. ARTW Art'S-Way Manufacturing Co. ARTX Arotech Corp. ARUN Aruba Networks ARWR Arrowhead Research Corp. ASBB Asb Bancorp Inc. ASBC Associated Banc-Corp ASBCW ASBI Ameriana Bancorp ASCA Ameristar Casinos ASCMA Ascent Media Corp. ASEI American Science And Engineering ASFI Asta Funding ASGN On Assignment ASIA Asiainfo-Linkage ASMI Asm International N.V. ASML Asml Holding N.V. ASNA Ascena Retail Group ASPS Altisource Portfolio Solutions S.A. ASRV Ameriserv Financial Inc. ASRVP Ameriserv Financial Inc. ASTC Astrotech Corp. ASTE Astec Industries ASTI Ascent Solar Technologies ASTM Aastrom Biosciences ASTX Astex Pharmaceuticals Inc ASUR Asure Software Inc ASYS Amtech Systems ATAI Ata Inc. ATAX America First Tax Exempt L.P. ATEA Astea International ATEC Alphatec Holdings ATHN Athenahealth ATHX Athersys ATLO Ames National Corp. ATMI Atmi Inc. ATML Atmel Corp. ATNI Atlantic Tele-Network ATNY Api Technologies ATPG Atp Oil & Gas Corp. ATRC Atricure ATRI Atrion Corp. ATRM Aetrium Inc. ATRO Astronics Corp. ATSG Air Transport Services Group Inc ATVI Activision Blizzard Inc ATX Cross [A.T.] Company AUBN Auburn National Bancorporation AUDC Audiocodes Ltd AUTH Authentec AUXL Auxilium Pharmaceuticals AVAV Aerovironment AVCA Advocat AVEO Aveo Pharmaceuticals AVGO Avago Technologies AVID Avid Technology AVII Avi Biopharma AVNR Avanir Pharmaceuticals Inc AVNW Aviat Networks AVTR Avatar Holdings Inc. AWAY Homeaway Inc. AWRE Aware AXAS Abraxas Petroleum Corp. AXFN MSCI Ex US Financials Sector AXJS AXTI Axt Inc AZPN Aspen Technology BABY Natus Medical Inc. BAGL Einstein Noah Restaurant Group BAMM Books-A-Million BANC First Pactrust Bancorp BANF Bancfirst Corp. BANFP Bancfirst Corp. BANR Banner Corp. BASI Bioanalytical Systems BBBY Bed Bath & Beyond Inc. BBCN Bbcn Bancorp Inc BBEP Breitburn Energy Partners L.P. BBGI Beasley Broadcast Group BBNK Bridge Capital Holdings BBOX Black Box Corp. BBRG Bravo Brio Restaurant Group BBSI Barrett Business Services BBXT Bankatlantic Bancorp BCAR Bank Of The Carolinas Corp. BCBP Bcb Bancorp Inc. [Nj] BCDS Bcd Semiconductor Manufacturing Ltd BCOM B Communications Ltd BCPC Balchem Corp. BCRX Biocryst Pharmaceuticals BCSB Bcsb Bancorp BCSI Blue Coat Systems Inc BDCO Blue Dolphin Energy Company BDE Black Diamond BDGE Bridge Bancorp BDMS Birner Dental Management Services BDSI Biodelivery Sciences International BEAT Cardionet BEAV Be Aerospace BEBE Bebe Stores BECN Beacon Roofing Supply BELFA Bel Fuse Inc. BELFB Bel Fuse Inc. BERK Berkshire Bancorp BEST Shiner International BFED Beacon Federal Bancorp BFIN Bankfinancial Corp. BFLY Bluefly BGCP Bgc Partners BGFV Big 5 Sporting Goods Corp. BGMD Bg Medicine BHLB Berkshire Hills Bancorp BIB Ultra Nasdaq Biotechnology BICK FT ETF Ii First Trust Bick BIDU Baidu BIDZ Bidz.Com BIIB Biogen Idec Inc BIOC Bioclinica Inc BIOD Biodel Inc. BIOF Biofuel Energy BIOS Bioscrip BIRT Actuate Corp. BIS Ultrashort Nasdaq Biotech BITS Bitstream Inc. BJRI Bj's Restaurants BKBK Britton & Koontz Capital Corp. BKCC Blackrock Kelso Capital Corp. BKEP Blueknight Energy BKEPP BKMU Bank Mutual Corp. BKOR Oak Ridge Financial Services BKSC Bank Of South Carolina BKYF The Bank Of Kentucky Financial BLDP Ballard Power Systems BLDR Builders Firstsource BLIN Bridgeline Digital BLKB Blackbaud BLMT Bsb Bancorp Inc. BLRX Biolinerx Ltd. BLTI Biolase Technology BMC Bmc Software BMRC Bank Of Marin Bancorp BMRN Biomarin Pharmaceutical Inc. BMTC Bryn Mawr Bank Corp. BMTI Biomimetic Therapeutics BNCL Beneficial Mutual Bancorp BNCN Bnc Bancorp BNHN Benihana Inc. BNSO Bonso Electronics International BNVI Bionovo BOBE Bob Evans Farms BOCH Bank Of Commerce Holdings [Ca] BODY Body Central BOFI Bofi Holding BOKF Bok Financial Corp. BOLT Bolt Technology Corp. BONA Bona Film Group Limited BONT The Bon-Ton Stores BOOM Dynamic Materials Corp. BOOT Lacrosse Footwear BOSC B.O.S. Better Online Solutions BOTJ Bank Of The Jame Fnl BOVA Bank Of Virginia BPAX Biosante Pharmaceuticals BPFH Boston Private Financial Holdings BPFHW Boston Private Financial Holdings BPHX Bluephoenix Solutions BPHXD Bluephoenix Solutions BPOP Popular BPOPM Popular BPOPN Popular BRCD Brocade Communications Systems BRCM Broadcom Corp. BRID Bridgford Foods Corp. BRKL Brookline Bancorp BRKR Bruker Corp. BRKS Brooks Automation BRLI Bio-Reference Laboratories BSDM Bsd Medical Corp. BSET Bassett Furniture Industries Inc. BSFT Broadsoft BSPM Biostar Pharmaceuticals BSQR Bsquare Corp. BSRR Sierra Bancorp BSTC Biospecifics Technologies Corp BTFG Banctrust Financial Group BTUI Btu International BUSE First Busey Corp. BVSN Broadvision BWEN Broadwind Energy BWINA Baldwin & Lyons BWINB Baldwin & Lyons BWLD Buffalo Wild Wings BWOW Wowjoint Holdings Limited BWOWU Wowjoint Holdings Limited BWOWW Wowjoint Holdings Limited BYFC Broadway Financial Corp. CA Ca Inc. CAAS China Automotive Systems CAC Camden National Corp. CACB Cascade