Ticker	Company (click for current signal)
AACC	Asset Acceptance Capital Corp.
AAME	Atlantic American Corporation
AANB	Abigail Adams National Bancorp, Inc.
AAON	AAON, Inc.
AAPL	Apple Inc.
AATI	Advanced Analogic Technologies, Inc.
AAUKD	Anglo American plc
AAWW	Atlas Air Worldwide Holdings
ABAX	ABAXIS, Inc.
ABBC	Abington Bancorp, Inc.
ABBI	Abraxis BioScience, Inc.
ABCB	Ameris Bancorp
ABCO	Advisory Board Company (The)
ABCW	Anchor BanCorp Wisconsin Inc.
ABER	Aber Diamond Corporation
ABFS	Arkansas Best Corporation
ABIX	Abatix Corp.
ABMC	American Bio Medica Corp.
ABMD	ABIOMED, Inc.
ABNJ	American Bancorp of New Jersey, Inc.
ABPI	Accentia Biopharmaceuticals, Inc.
ABTL	Autobytel Inc.
ABVA	Alliance Bankshares Corporation
ABXA	ABX Air, Inc.
ACAD	ACADIA Pharmaceuticals Inc.
ACAP	American Physicians Capital, Inc.
ACAS	American Capital Strategies, Ltd.
ACAT	Arctic Cat Inc.
ACBA	American Community Bancshares
ACCL	Accelrys, Inc.
ACEC	ACE*COMM Corporation
ACEL	Alfacell Corporation
ACET	Aceto Corporation
ACFC	Atlantic Coast Federal Corporation
ACGL	Arch Capital Group Ltd.
ACGY	Acergy S.A.
ACHN	Achillion Pharmaceuticals, Inc.
ACIW	ACI Worldwide, Inc.
ACLI	American Commercial Lines Inc
ACLS	Axcelis Technologies, Inc.
ACME	ACME Communications, Inc.
ACMR	A.C. Moore Arts & Crafts, Inc.
ACOR	Acorda Therapeutics, Inc.
ACPW	Active Power, Inc.
ACSEF	ACS Motion Control Ltd.
ACTG	Acacia Research Corporation
ACTI	ActivIdentity Corporation
ACTL	Actel Corporation
ACTS	Actions Semiconductor Co., Ltd.
ACTU	Actuate Corporation
ACUS	Acusphere, Inc.
ACXM	Acxiom Corporation
ADAM	A.D.A.M. Inc.
ADAT	Authentidate Holding Corp.
ADBE	Adobe Systems Incorporated
ADBL	Audible, Inc.
ADCT	ADC Telecommunications, Inc.
ADEP	Adept Technology, Inc.
ADES	ADA-ES, Inc.
ADLR	Adolor Corporation
ADLS	Advanced Life Sciences Holdings, Inc.
ADPI	American Dental Partners, Inc.
ADPT	Adaptec, Inc.
ADRA	BLDRS Asia 50 ADR Index Fund
ADRD	BLDRS Developed Markets 100 ADR Index Fund
ADRE	BLDRS Emerging Markets 50 ADR Index Fund
ADRU	BLDRS Europe 100 ADR Index Fund
ADSK	Autodesk, Inc.
ADST	AdStar, Inc.
ADSX	Applied Digital Solutions, Inc.
ADTN	ADTRAN, Inc.
ADVNA	ADVANTA Corp.
ADVNB	ADVANTA Corp.
ADVS	Advent Software, Inc.
AEHR	Aehr Test Systems
AEIS	Advanced Energy Industries, Inc.
AEMLW	Agnico-Eagle Mines Limited
AEPI	AEP Industries Inc.
AERO	AeroGrow International, Inc.
AERT	Advanced Environmental Recycling Technologies, Inc.
AETI	American Electric Technologies, Inc.
AEZS	AEterna Zentaris, Inc.
AFAM	Almost Family Inc
AFCE	AFC Enterprises, Inc.
AFFM	Affirmative Insurance Holdings, Inc.
AFFX	Affymetrix, Inc.
AFFY	Affymax, Inc.
AFOP	Alliance Fiber Optic Products, Inc.
AFSI	AmTrust Financial Services, Inc.
AGEN	Antigenics Inc.
AGIID	Argo Group International Holdings Ltd.
AGIX	AtheroGenics, Inc.
AGYS	Agilysys, Inc.
AHCI	Allied HealthCare International Inc.
AHGP	Alliance Holdings GP, L.P.
AHII	Animal Health International, Inc.
AHPI	Allied Healthcare Products, Inc.
AIMC	Altra Holdings, Inc.
AINV	Apollo Investment Corporation
AIRM	Air Methods Corporation
AIRN	Airspan Networks Inc.
AIRT	Air T, Inc.
AIRV	Airvana, Inc.
AIXD	Access Integrated Technologies, Inc.
AIXG	Aixtron Aktiengesellschaft
AKAM	Akamai Technologies, Inc.
AKRX	Akorn, Inc.
AKZOY	Akzo Nobel N.V.
ALAB	Alabama National BanCorporation
ALAN	Alanco Technologies Inc.
ALBY	Community Capital Bancshares, Inc.
ALCO	Alico, Inc.
ALDA	Aldila, Inc.
ALDN	Aladdin Knowledge Systems Limited
ALEX	Alexander & Baldwin, Inc.
ALFA	Alfa Corporation
ALGN	Align Technology, Inc.
ALGT	Allegiant Travel Company
ALKS	Alkermes, Inc.
ALLB	Alliance Bancorp, Inc. of Pennsylvania
ALLI	Allion Healthcare, Inc.
ALLT	Allot Communications Ltd.
ALNC	Alliance Financial Corporation
ALNY	Alnylam Pharmaceuticals, Inc.
ALOG	Analogic Corporation
ALOT	Astro-Med, Inc.
ALOY	Alloy, Inc.
ALSE	Alseres Pharmaceuticals, Inc.
ALSK	Alaska Communications Systems Group, Inc.
ALTH	Allos Therapeutics, Inc.
ALTI	Altair Nanotechnologies Inc.
ALTR	Altera Corporation
ALTU	Altus Pharmaceuticals Inc.
ALUS	Alsius Corporation
ALUSU	Alsius Corporation
ALUSW	Alsius Corporation
ALVR	Alvarion Ltd.
ALXA	Alexza Pharmaceuticals, Inc.
ALXN	Alexion Pharmaceuticals, Inc.
AMAB	AmericasBank Corp.
AMAC	American Medical Alert Corp.
AMAG	AMAG Pharmaceuticals, Inc.
AMAT	Applied Materials, Inc.
AMCC	Applied Micro Circuits Corporation
AMCE	American Claims Evaluation, Inc.
AMCP	AmCOMP Incorporated
AMCS	AMICAS, Inc.
AMED	Amedisys Inc
AMEN	AMEN Properties Inc.
AMFI	Amcore Financial, Inc.
AMGI	American Mold Guard, Inc.
AMGIW	American Mold Guard, Inc.
AMGIZ	American Mold Guard, Inc.
AMGN	Amgen Inc.
AMIC	American Independence Corp.
AMIE	Ambassadors International, Inc.
AMIN	American International Industries Inc
AMIS	AMIS Holdings, Inc.
AMKR	Amkor Technology, Inc.
AMLN	Amylin Pharmaceuticals, Inc.
AMMD	American Medical Systems Holdings, Inc.
AMNB	American National Bankshares, Inc.
AMOT	Allied Motion Technologies, Inc.
AMOV	America Movil, S.A.B. de C.V.
AMPH	American Physicians Service Group, Inc.
AMPL	Ampal-American Israel Corporation
AMPX	Ampex Corporation
AMRB	American River Bankshares
AMRI	Albany Molecular Research, Inc.
AMRN	Amarin Corporation PLC
AMSC	American Superconductor Corporation
AMSF	AMERISAFE, Inc.
AMSG	Amsurg Corp.
AMSWA	American Software, Inc.
AMTC	Ameritrans Capital Corporation
AMTCP	Ameritrans Capital Corporation
AMTD	TD Ameritrade Holding Corporation
AMTY	Amerityre Corporation
AMWD	American Woodmark Corporation
AMZN	Amazon.com, Inc.
ANAD	ANADIGICS, Inc.
ANAT	American National Insurance Company
ANCX	Access National Corporation
ANDE	Andersons, Inc. (The)
ANDS	Anadys Pharmaceuticals, Inc.
ANDW	Andrew Corporation
ANEN	Anaren, Inc.
ANET	Authorize.Net Holdings, Inc.
ANGN	Angeion Corporation
ANGO	AngioDynamics, Inc.
ANIK	Anika Therapeutics Inc.
ANLY	Analysts International Corporation
ANNB	Annapolis Bancorp Inc.
ANPI	Angiotech Pharmaceuticals, Inc.
ANSR	Answerthink, Inc.
ANSS	ANSYS, Inc.
ANST	Ansoft Corporation
ANSV	Anesiva, Inc.
ANSW	Answers Corporation
ANTP	PHAZAR CORP
APAB	Appalachian Bancshares, Inc. (GA)
APAC	APAC Customer Services, Inc.
APAGF	APCO Argentina Inc.
APAT	APA Enterprises, Inc.
APFC	American Pacific Corporation
APII	Action Products International, Inc.
APKT	Acme Packet, Inc.
APLX	Applix, Inc.
APOG	Apogee Enterprises, Inc.
APOL	Apollo Group, Inc.
APPA	A.P. Pharma, Inc.
APPB	Applebee's International, Inc.
APRO	America First Apartment Investors, Inc.
APSA	Alto Palermo S.A.
APSG	Applied Signal Technology, Inc.
APTM	APTIMUS INC
ARAY	Accuray Incorporated
ARBA	Ariba, Inc.
ARBX	Arbinet-thexchange, Inc.
ARCC	Ares Capital Corporation
ARCI	Appliance Recycling Centers of America, Inc.
ARCW	Arc Wireless Solutions, Inc.
ARDNA	Arden Group, Inc.
ARGN	Amerigon Incorporated
ARIA	ARIAD Pharmaceuticals, Inc.
ARII	American Railcar Industries, Inc.
ARKR	Ark Restaurants Corp.
ARLP	Alliance Resource Partners, L.P.
ARMHY	ARM Holdings, plc
ARNA	Arena Pharmaceuticals, Inc.
AROW	Arrow Financial Corporation
ARQL	ArQule, Inc.
ARRO	Arrow International, Inc.
ARRQ	Merrill Lynch & Co., Inc.
ARRS	Arris Group Inc
ARRY	Array BioPharma Inc.
ARTC	ArthroCare Corporation
ARTE	Artes Medical, Inc.
ARTG	Art Technology Group, Inc.
ARTL	The Aristotle Corporation
ARTLP	The Aristotle Corporation
ARTNA	Artesian Resources Corporation
ARTW	Art's-Way Manufacturing Co., Inc.
ARTX	Arotech Corporation
ARUN	Aruba Networks, Inc.
ARWR	Arrowhead Research Corporation
ARXT	Adams Respiratory Therapeutics, Inc.
ASBC	Associated Banc-Corp
ASBI	Ameriana Bancorp
ASCA	Ameristar Casinos, Inc.
ASEI	American Science and Engineering, Inc.
ASFI	Asta Funding, Inc.
ASFN	Atlantic Southern Financial Group, Inc.
ASGN	On Assignment, Inc.
ASGR	America Service Group Inc.
ASHW	Ashworth, Inc.
ASIA	AsiaInfo Holdings, Inc.
ASMI	ASM International N.V.
ASML	ASML Holding N.V.
ASPM	Aspect Medical Systems, Inc.
ASPV	Aspreva Pharmaceuticals Corporation
ASRV	AmeriServ Financial Inc.
ASRVP	AmeriServ Financial Inc.
ASTE	Astec Industries, Inc.
ASTI	Ascent Solar Technologies, Inc.
ASTIZ	Ascent Solar Technologies, Inc.