| Name | Ticker | Type | ISIN code |
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| AETERNA ZENTARIS. | AEZS | Stock | CA0079752048 |
| AETRIUM INCORPORATED | ATRM | Stock | US00817R1032 |
| AFC ENTERPRISES. | AFCE | Stock | US00104Q1076 |
| AFFIRMATIVE INSURANCE HOLDINGS. | AFFM | Stock | US0082721061 |
| AFFYMAX, INC. | AFFY | Stock | |
| AFFYMETRIX, INC. | AFFX | Stock | US00826T1088 |
| AGFEED INDUSTRIES. | FEED | Stock | |
| AGILYSYS, INC. | AGYS | Stock | US00847J1051 |
| AIRMEDIA GROUP INC ADR | AMCN | Stock | |
| AIR METHODS CORPORATION | AIRM | Stock | US0091283079 |
| AIRSPAN NETWORKS INC. | AIRN | Stock | US00950H1023 |
| AIR T, INC. | AIRT | Stock | US0092071010 |
| AIR TRANSPORT SERVICES GROUP | ATSG | Stock | |
| AIRVANA, INC. | AIRV | Stock | |
| AIXTRON AKTIENGESELLSCHAFT ADR | AIXG | Stock | US0096061041 |
| AKAMAI TECHNOLOGIES. | AKAM | Stock | US00971T1016 |
| AKEENA SOLAR, INC. | AKNS | Stock | |
| AKORN, INC. | AKRX | Stock | |
| AKTIESELSKABET DAMPSKIBSSELSKABET TORM A | TRMD | Stock | US00208W1099 |
| ALABAMA AIRCRAFT INDUSTRIES. | AAII | Stock | |
| ALADDIN KNOWLEDGE SYSTEMS LIMITED | ALDN | Stock | IL0010824030 |
| ALANCO TECHNOLOGIES INC. | ALAN | Stock | US0116124050 |
| ALASKA COMMUNICATIONS SYSTEMS GROUP. | ALSK | Stock | US01167P1012 |
| ALBANY MOLECULAR RESEARCH. | AMRI | Stock | US0124231095 |
| ALDILA, INC. | ALDA | Stock | US0143842005 |