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| | Dernier | Varia. | Var. 1an | Volume | Note Invest. | CT | MT | LT |
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 | A. SCHULMAN INC | 21.79 | 0.60% | -11.89% | 153 905 | |  |  | |
| | A.T. CROSS COMPANY | 10.12 | -2.97% | -19.68% | 12 946 | | | | |
| A123 SYSTEMS, INC. | 1.01 | -1.94% | -81.96% | 496 311 | | | | |
| AAON, INC. | 19.43 | 2.48% | -8.78% | 50 983 | | | | |
| | AASTROM BIOSCIENCES,.. | 2.05 | -0.49% | -30.27% | 141 082 | | | | |
| ABAXIS INC | 32.56 | -0.06% | 7.46% | 74 697 | |  | | |
| ABIOMED, INC. | 20.8 | -5.11% | 9.99% | 1 239 535 | | | | |
| ABRAXAS PETROLEUM CO.. | 2.56 | -2.66% | -33.85% | 696 355 | | | | |
| ACACIA RESEARCH CORP.. | 35.13 | -0.40% | -7.53% | 296 521 | | | | |
| ACADIA HEALTHCARE CO.. | 18.03 | 5.07% | | 212 062 | | | | |
| | ACADIA PHARMACEUTICA.. | 1.46 | 6.57% | -22.34% | 179 158 | | | | |
| | ACCELRYS, INC. | 7.68 | -0.65% | 9.71% | 88 140 | | | | |
| | ACCESS NATIONAL CORP.. | 12.41 | 1.47% | 63.29% | 59 579 | | | | |
| ACCURAY INCORPORATED | 6.18 | 2.15% | -15.11% | 295 924 | | | | |
| | ACELRX PHARMACEUTICA.. | 3.53 | 2.17% | -9.49% | 100 | | | | |
| | ACETO CORPORATION | 8.25 | 0.36% | 17.02% | 69 567 | | | | |
| ACHILLION PHARMACEUT.. | 7.35 | 0.41% | 20.69% | 396 210 | | | | |
| ACI WORLDWIDE INC | 40.03 | -0.17% | 27.40% | 217 530 | | | | |
| ACME PACKET, INC. | 23.24 | 1.22% | -68.54% | 1 110 398 | | | | |
| | ACNB CORPORATION | 14.9 | -0.47% | -2.53% | 1 320 | | | | |
| ACORDA THERAPEUTICS .. | 22.54 | -0.53% | -31.28% | 233 105 | | | | |
| ACORN ENERGY, INC. | 8.89 | -2.84% | 140.92% | 196 674 | | | | |
| | ACTIONS SEMICONDUCTO.. | 1.66 | 0.61% | -24.55% | 66 548 | | | | |
| | ACTIVE POWER, INC. | 0.7397 | -0.04% | -66.68% | 100 194 | | | | |
| ACTIVISION BLIZZARD,.. | 12.24 | 1.16% | 7.56% | 4 928 208 | | | | |
| ACTUATE CORPORATION | 6.79 | 2.26% | 24.13% | 139 220 | | | | |
| | ACURA PHARMACEUTICAL.. | 3.05 | 10.11% | -33.55% | 41 504 | | | | |
| ACXIOM CORPORATION | 13.97 | 5.20% | 3.87% | 915 345 | | | | |
| ADA-ES, INC. | 25.91 | -2.23% | 140.13% | 47 472 | | | | |
| | ADAMS GOLF, INC. | 10.79 | 0.06% | 49.82% | 2 800 | | | | |
| | ADDUS HOMECARE CORPO.. | 3.75 | 0.54% | -31.94% | 1 385 | | | | |
| | ADDVANTAGE TECHNOLOG.. | 2.201 | -0.86% | -16.63% | 1 000 | | | | |
| | ADEPT TECHNOLOGY, IN.. | 4.53 | 0.22% | 15.56% | 6 758 | | | | |
| ADOBE SYSTEMS INCORP.. | 31.6 | 0.19% | -7.41% | 2 000 287 | | | | |
| | ADSTAR, INC. | 0.0012 | 0.00% | -50.00% | 5 000 | | | | |
| ADTRAN, INC. | 30.09 | 0.97% | -27.60% | 476 834 | | | | |
| ADVANCED ENERGY INDU.. | 13.69 | 0.22% | -6.30% | 407 070 | | | | |
| ADVENT SOFTWARE, INC.. | 26.77 | 0.56% | -1.80% | 67 587 | | | | |
| | ADVOCAT INC. | 6.1992 | 4.36% | -12.93% | 5 468 | | | | |
| | AEGERION PHARMACEUTI.. | 13.56 | 0.00% | -24.58% | 55 841 | | | | |
| | AEGION CORP | 16.5 | 0.49% | -34.60% | 169 933 | | | | |
| | AEHR TEST SYSTEMS | 1.17 | 7.34% | -20.95% | 7 851 | | | | |
| | AEP INDUSTRIES | 34.74 | 0.12% | 20.88% | 10 015 | | | | |
| AEROVIRONMENT, INC. | 21.53 | -0.51% | -26.22% | 132 602 | | | | |
| | AETERNA ZENTARIS INC.. | 0.47 | -5.05% | -79.65% | 1 080 470 | | | | |
| | AETRIUM, INC. | 0.64 | 1.59% | -65.96% | 22 214 | | | | |
| AFC ENTERPRISES, INC.. | 21.69 | 4.03% | 44.60% | 218 466 | | | | |
| | AFFIRMATIVE INSURANC.. | 0.4502 | -18.10% | -82.68% | 1 325 | | | | |
| AFFYMAX, INC. | 14.07 | -1.26% | 105.10% | 333 583 | | | | |
| AFFYMETRIX, INC. | 4.96 | 0.61% | -15.50% | 392 614 | | | | |
| | AGENUS INC | 5.2 | 1.17% | -5.80% | 142 361 | | | | |
| | AGILYSYS, INC. | 7.19 | -1.78% | 54.96% | 58 370 | | | | |
| AIR METHODS CORPORAT.. | 91.97 | -0.13% | 54.75% | 39 406 | | | | |
| | AIR T, INC. | 9.2499 | 1.87% | -2.74% | 871 | | | | |
| | AIR TRANSPORT SERVIC.. | 5.05 | -0.79% | -31.29% | 82 771 | | | | |
| | AIRMEDIA GROUP INC. | 2.35 | 6.33% | -36.49% | 38 996 | | | | |
| | AIXTRON SE | 14.89 | -4.80% | -61.02% | 284 058 | | | | |
| AKAMAI TECHNOLOGIES,.. | 29.31 | -0.31% | -10.86% | 1 526 528 | | | | |
| AKORN, INC. | 13.7 | 0.81% | 103.26% | 899 892 | | | | |
| | ALASKA COMMUNICATION.. | 1.85 | 0.00% | -79.33% | 163 969 | | | | |
| | ALBANY MOLECULAR RES.. | 2.71 | -1.81% | -44.81% | 111 827 | | | | |
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