All Companies
A
- Aban Offshore
- Abaxis
- Abbott Laboratories
- ABG Shipyard
- Abiomed
- AbitibiBowater
- Abraxas Petroleum
- Acadia Healthcare
- ACC Limited
- Accelrys
- Accenture
- ACCO Brands
- Accuray
- Achillion
- Acme Packet
- Acorda
- Acorn Energy
- Adani Group
- Adidas
- Adino Energy
- Aditya Birla Group
- Admiralty Shipyards
- Adtran
- Advance Auto Parts
- Advanced Micro Devices
- Advaxis
- ADVENTRX
- AECOM Technology
- Aeroflot
- AES Corporation
- Aetna
- Affymax
- Affymetrix
- AFK Sistema
- Aflac Incorporated
- Ageas
- Agile Property Holdings
- Agilent Technologies
- AGL Resources
- Agricultural Bank of China
- Agrium
- Air India
- Airbus
- AirTouch Communications
- Aixtron
- AK Steel Holding
- Alcoa
- Alere
- Alkermes
- Allahabad Bank
- Allergan
- Alliant Techsystems
- AllScripts
- Allstate
- Ally Financial
- Alnylam
- Alrosa
- Altria Group
- AMAG Pharmaceuticals
- Amarantus Biosciences
- Amarin
- Amazon
- AmBev
- AmbiCom
- Ambuja Cements
- Ameren
- American Airlines
- American Electric Power
- American Express
- American International Group
- American Petro-Hunter
- American Standard Energy Corporation
- American Vanguard
- American Wagering
- American Woodmark
- Amerigon
- Amerigroup
- Amerilithium
- Ameriprise Financial
- Ameris Bancorp
- AMERISAFE
- AmerisourceBergen
- Amgen
- Amkor Technology
- AMN Healthcare
- Ampco-Pittsburgh
- Amphenol
- AMR Corporation
- AmSurg
- Amtech Systems
- Amylin Pharmaceuticals
- Anadarko Petroleum
- Anadigics
- Anadys Pharmaceuticals
- Anaren
- Andhra Bank
- Angeion
- AngioDynamics
- Angiotech
- AngloGold Ashanti
- Ann Taylor
- Anooraq Resources
- Anshan Iron & Steel
- Ansys
- Antares Pharma
- ANTs Software
- Aon
- Apache Corporation
- Apogee Technology
- Apollo Group
- Apollo Hospitals
- Apollo Tyres
- Apple
- Applied Materials
- Applied Nanotech
- Aptalis
- AptarGroup
- Aptech
- Aqua America
- Aradigm
- Aramark
- Arbitron
- Arbor Realty Trust
- ARC Wireless
- Arcadia Resources
- Arch Coal
- Archer Daniels Midland
- ArcSight
- Arctic Cat
- Ardea Biosciences
- Ardent Mines
- Arena Pharmaceuticals
- Argentex Mining
- ARI Network Services
- ARIAD
- Ark Restaurants
- Arkanova Energy
- Arktikmorneftegazrazvedka
- Arlington Asset Investment Corporation
- Armstrong World Industries
- Arno Therapeutics
- Arotech
- ArQule
- Array BioPharma
- ARRIS
- Arrow Electronics
- Arrowhead Research
- Artfest International
- Arthur J. Gallagher & Co
- Aruba Networks
- Arvind Mills
- Aryx Therapeutics
- Asbury Automotive
- Ascena Retail
- Ascent Solar
- Ashford Hospitality Trust
- Ashland
- Ashok Leyland
- AspenBio Pharma
- Aspire International
- Aspire Japan
- Assurant
- Assured Guaranty
- Asta Funding
- Astea International
- Astec Industries
- Astellas
- Astex Pharmaceuticals
- AstraZeneca
- Astro-Med
- Astronics
- Asure Software
- Asyst Technologies
- AT&T
- athenahealth
- Athersys
- Atlantic Tele-Network
- Atlas Energy Resources
- Atlas Pipeline
- Atmel
- ATMI
- Atmos Energy
- ATP Oil & Gas
- AtriCure
- Atrion
- ATS Corporation
- Attensity
- Attitude Drinks
- Attunity
- Atwood Oceanics
- AU Optronics
- AudioCodes
- Augme Technologies
- Augusta Resource
- AuraSound
- Aurizon Mines
- AuthenTec
- Authentidate
- Autobytel
- Autodesk
- Autoliv
- Automatic Data Processing
- AutoNation
- AutoZone
- Auxilio
- Auxilium Pharmaceuticals
- Avalon Pharmaceuticals
- AvalonBay Communities
- Avantair
- Avatar Holdings
- AVEO Pharmaceuticals
- Averion International
- Avery Dennison
- AVI BioPharma
- Aviation Industry Corporation of China
- Avid Technology
- Avigen Inc.
- Avino Silver & Gold Mines
- Avis Budget Group
- Avista Corp.
- Avistar Communications
- Aviva
- Aviza Technology
- Avnet Inc
- Avon Products
- Avro Energy
- AvStar Aviation
- Avtovaz
- AVX Corporation
- Axcelis Technologies
- Axesstel
- Axion Power
- Axis Bank
- Axis Capital
- AxoGen
- AXT Inc.
- Aztec Oil & Gas
- AZZ inc.
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