| ABMD | ABIOMED, Inc. |
| ACE | ACE Limited |
| AGAM | AGA Medical Holdings, Inc. |
| AIXA GR | AIXTRON AG |
| ALKB DC | ALK-Abello A/S |
| AMSF | AMERISAFE Inc. |
| ARM LN | ARM Holdings plc |
| ASML NA | ASML Holding NV |
| ATAI | ATA, Inc. |
| ABAX | Abaxis Inc. |
| ABC LN | Abcam PLC |
| ANF | Abercrombie & Fitch Co. |
| ABLX BB | Ablynx NV |
| ARAY | Accuray Incorporated |
| APKT | Acme Packet, Inc. |
| ACOR | Acorda Therapeutics, Inc. |
| ATLN VX | Actelion Ltd. |
| ATVI | Activision Blizzard, Inc. |
| ADXN SW | Addex Pharmaceuticals Sa |
| ADBE | Adobe Systems Incorporated |
| AATI | Advanced Analogic Technologies Incorporated |
| ABCO | Advisory Board Co. |
| ARO | Aeropostale, Inc. |
| AFFY | Affymax, Inc. |
| AFFX | Affymetrix, Inc. |
| AMCN | AirMedia Group Inc. |
| ARG | Airgas Inc. |
| AKAM | Akamai Technologies, Inc. |
| ALU FP | Alcatel-Lucent SA |
| AA | Alcoa, Inc. |
| ACL | Alcon Inc. |
| ALXN | Alexion Pharmaceuticals, Inc. |
| ALXA | Alexza Pharmaceuticals, Inc. |
| AGN | Allergan Inc. |
| AGY LN | Allergy Therapeutics |
| ADS | Alliance Data Systems Corporation |
| AIQ | Alliance HealthCare Services |
| AIQ-FI | Alliance HealthCare Services |
| AHCI | Allied Healthcare International Inc. |
| ALNY | Alnylam Pharmaceuticals, Inc. |
| AOSL | Alpha and Omega Semiconductor |
| ALTR | Altera Corporation |
| ASPS | Altisource Portfolio Solutions S.A. |
| ALVR | Alvarion Ltd. |
| AMSG | AmSurg Corp. |
| AMZN | Amazon.com, Inc. |
| ACF | AmeriCredit Corp. |
| AEO | American Eagle Outfitters, Inc. |
| AXP | American Express Company |
| AMMD | American Medical Systems Holdings, Inc. |
| AOB | American Oriental Bioengineering, Inc. |
| ACAP | American Physicians Capital, Inc. |
| AMPH | American Physicians Service Group Inc. |
| APEI | American Public Education, Inc. |
| AMSC | American Superconductor Corporation |
| AMT | American Tower Corp. |
| AMGN | Amgen Inc. |
| AMLN | Amylin Pharmaceuticals, Inc. |
| ANDS | Anadys Pharmaceuticals, Inc. |
| ANEN | Anaren, Inc. |
| ACOM | Ancestry.com Inc. |
| ANDE | Andersons, Inc. (The) |
| AU | AngloGold Ashanti Ltd. |
| AHII | Animal Health International, Inc. |
| AIE LN | Anite plc |
| ANN | AnnTaylor Stores Corporation |
| ANTH | Anthera Pharmaceuticals, Inc. |
| ASM LN | Antisoma Plc |
| APOG | Apogee Enterprises, Inc. |
| APOL | Apollo Group, Inc. |
| AAPL | Apple, Inc. |
| AMAT | Applied Materials, Inc. |
| ACI | Arch Coal, Inc. |
| ARCL | Archipelago Learning, Inc. |
| ARNA | Arena Pharmaceuticals, Inc. |
| AKT LN | Ark Therapeutics Plc |
| ABFS | Arkansas Best Corp. |
| ARRY | Array BioPharma Inc. |
| AJG | Arthur J. Gallagher & Co. |
| AGO | Assured Guaranty Ltd. |
| ASTE | Astec Industries, Inc. |
| ATHR | Atheros Communications, Inc. |
| ATRC | AtriCure, Inc. |
| ADSK | Autodesk, Inc. |
| AU/ LN | Autonomy Corporation plc |
| AVV LN | Aveva Group Plc |
| AVID | Avid Technology, Inc. |
| ASD LN | Axis-Shield |
| ABX | Barrick Gold Corp. |
| ATHN | athenahealth, Inc. |