| Code | Name | High | Low | Close | Volume | Change |
|---|
| AACC | Asset Acceptance Capital Corp. | 4.020 | 3.810 | 3.990 | 21,234 | 0.040 |  | 1.01 |
| AAME | Atlantic American Corporation | 1.450 | 1.390 | 1.440 | 10,000 | 0.070 | | 5.11 |
| AAON | AAON Inc. | 22.74 | 22.35 | 22.64 | 23,949 | 0.13 | | 0.58 |
| AAPL | Apple Inc. | 258.8 | 254.5 | 258.8 | 18,578,739 | 6.6 | | 2.62 |
| AATI | Advanced Analogic Technologies Inc. | 3.440 | 3.340 | 3.400 | 144,424 | 0.010 | | 0.29 |
| AAWW | Atlas Air Worldwide Holdings | 49.63 | 47.95 | 49.36 | 436,975 | 1.98 | | 4.18 |
| AAXJ | iShares MSCI All Country Asia ex Japan | 56.66 | 56.17 | 56.46 | 320,898 | 0.50 | | 0.89 |
| ABAT | Advanced Battery Technologies Inc. | 3.700 | 3.630 | 3.650 | 590,134 | 0.010 | | 0.27 |
| ABAX | ABAXIS Inc. | 19.50 | 19.04 | 19.48 | 58,103 | 0.36 | | 1.88 |
| ABBC | Abington Bancorp Inc. | 10.49 | 10.18 | 10.30 | 80,258 | 0.15 | | 1.48 |
| ABCB | Ameris Bancorp | 8.600 | 8.330 | 8.590 | 46,742 | 0.210 | | 2.51 |
| ABCD | Cambium Learning Group Inc. | 3.100 | 2.930 | 3.100 | 74,186 | 0.020 | | 0.65 |
| ABCO | The Advisory Board Company | 43.19 | 41.23 | 42.99 | 36,213 | 0.97 | | 2.31 |
| ABCW | Anchor BanCorp Wisconsin Inc. | 0.6700 | 0.6300 | 0.6300 | 70,770 | 0.0000 |  | 0.00 |
| ABFS | Arkansas Best Corporation | 22.64 | 21.28 | 21.67 | 353,836 | 0.27 |  | 1.23 |
| ABII | Abraxis Bioscience Inc. | 74.36 | 73.97 | 74.12 | 45,202 | 0.13 | | 0.18 |
| ABIO | Arca Biopharma Inc. | 3.540 | 3.400 | 3.450 | 42,044 | 0.010 | | 0.29 |
| ABMD | ABIOMED Inc. | 9.800 | 9.430 | 9.660 | 100,288 | 0.120 | | 1.26 |
| ABTL | Autobytel Inc. | 0.8700 | 0.8450 | 0.8500 | 121,900 | 0.0000 | | 0.00 |
| ABVA | Alliance Bankshares Corporation | 3.000 | 2.700 | 2.750 | 12,540 | 0.240 | | 8.03 |
| ACAD | ACADIA Pharmaceuticals Inc. | 1.060 | 1.030 | 1.030 | 92,957 | 0.010 | | 0.96 |
| ACAP | American Physicians Capital Inc. | 41.34 | 41.21 | 41.34 | 29,374 | 0.02 | | 0.05 |
| ACAS | American Capital Ltd. | 5.590 | 5.420 | 5.590 | 4,677,704 | 0.190 | | 3.52 |
| ACAT | Arctic Cat Inc. | 8.750 | 8.070 | 8.560 | 52,497 | 0.320 | | 3.88 |
| ACCL | Accelrys Inc. | 6.390 | 6.200 | 6.320 | 110,945 | 0.080 | | 1.28 |
| ACET | Aceto Corporation | 6.120 | 5.980 | 6.110 | 54,975 | 0.150 | | 2.52 |
| ACFC | Atlantic Coast Federal Corporation | 2.410 | 2.050 | 2.400 | 9,881 | 0.000 | | 0.00 |
| ACFN | Acorn Energy Inc. | 4.550 | 4.390 | 4.520 | 17,443 | 0.030 | | 0.66 |
| ACGL | Arch Capital Group Ltd. | 81.67 | 80.76 | 81.33 | 327,383 | 0.46 | | 0.57 |
| ACGY | Acergy S.A. | 17.19 | 16.77 | 16.97 | 100,840 | 0.11 | | 0.65 |
| ACHN | Achillion Pharmaceuticals Inc. | 2.800 | 2.680 | 2.750 | 65,499 | 0.050 | | 1.85 |
| ACIW | ACI Worldwide Inc. | 20.57 | 19.49 | 19.87 | 198,515 | 0.49 | | 2.41 |
| ACLI | American Commercial Lines Inc | 30.33 | 28.86 | 29.25 | 93,509 | 0.01 | | 0.03 |
| ACLS | Axcelis Technologies Inc. | 1.550 | 1.510 | 1.530 | 441,164 | 0.030 | | 2.00 |
| ACMR | A.C. Moore Arts & Crafts Inc. | 1.930 | 1.830 | 1.870 | 42,353 | 0.070 | | 3.89 |
| ACOM | Ancestry.com Inc. | 20.23 | 19.72 | 20.08 | 148,371 | 0.18 | | 0.90 |
| ACOR | Acorda Therapeutics Inc. | 33.37 | 32.03 | 32.65 | 412,663 | 0.74 | | 2.32 |
| ACPW | Active Power Inc. | 1.220 | 1.190 | 1.220 | 350,251 | 0.040 | | 3.39 |
| ACTG | Acacia Research Corporation | 16.45 | 15.76 | 15.97 | 275,809 | 0.18 | | 1.14 |
| ACTI | ActivIdentity Corporation | 2.100 | 1.990 | 2.070 | 110,449 | 0.070 | | 3.50 |
| ACTL | Actel Corporation | 15.40 | 15.01 | 15.38 | 74,167 | 0.34 | | 2.26 |
| ACTS | Actions Semiconductor Co. Ltd. | 2.140 | 2.120 | 2.140 | 27,059 | 0.020 | | 0.94 |
| ACTU | Actuate Corporation | 4.350 | 4.230 | 4.340 | 145,569 | 0.090 | | 2.12 |
| ACUR | Acura Pharmaceuticals Inc. | 2.520 | 2.360 | 2.500 | 21,064 | 0.110 | | 4.60 |
| ACWI | iShares MSCI ACWI Index Fund | 41.51 | 41.16 | 41.39 | 66,446 | 0.36 | | 0.88 |
| ACWX | iShares MSCI ACWI ex US Index Fund | 39.55 | 39.28 | 39.47 | 28,609 | 0.42 | | 1.08 |
| ACXM | Acxiom Corporation | 13.81 | 13.33 | 13.80 | 524,422 | 0.64 | | 4.86 |
| ADAM | A.D.A.M. Inc. | 5.540 | 5.450 | 5.530 | 224,756 | 0.060 | | 1.10 |
| ADAT | Authentidate Holding Corp. | 0.7100 | 0.6300 | 0.7000 | 37,702 | 0.0600 | | 9.38 |
| ADBE | Adobe Systems Incorporated | 29.91 | 29.25 | 29.49 | 6,035,562 | 0.07 | | 0.24 |
| ADCT | ADC Telecommunications Inc. | 12.70 | 12.68 | 12.68 | 1,362,344 | 0.04 | | 0.31 |
| ADEP | Adept Technology Inc. | 5.110 | 4.950 | 5.000 | 20,899 | 0.010 | | 0.20 |
| ADES | ADA-ES Inc. | 4.950 | 4.770 | 4.910 | 3,055 | 0.010 | | 0.20 |
| ADGF | Adams Golf Inc. | 4.380 | 4.080 | 4.379 | 8,125 | 0.220 | | 5.29 |
| ADLR | Adolor Corporation | 1.120 | 1.060 | 1.110 | 94,159 | 0.000 | | 0.00 |
| ADP | Automatic Data Processing Inc. | 40.46 | 39.85 | 40.08 | 3,319,782 | 0.39 | | 0.98 |
| ADPI | American Dental Partners Inc. | 11.17 | 10.99 | 11.15 | 38,454 | 0.17 | | 1.55 |
| ADRA | BLDRS Asia 50 ADR Index Fund | 24.76 | 24.62 | 24.66 | 2,147 | 0.21 | | 0.86 |
| ADRD | BLDRS Developed Markets 100 ADR Index | 19.81 | 19.69 | 19.76 | 5,254 | 0.31 | | 1.59 |
| ADRE | BLDRS Emerging Markets 50 ADR Index Fund | 42.87 | 42.51 | 42.66 | 87,616 | 0.39 | | 0.92 |
| ADRU | BLDRS Europe 100 ADR Index Fund | 19.53 | 19.53 | 19.53 | 100 | 0.22 | | 1.14 |
| ADSK | Autodesk Inc. | 30.16 | 29.52 | 30.02 | 2,341,632 | 0.70 | | 2.39 |
| ADTN | ADTRAN Inc. | 33.00 | 32.42 | 32.50 | 479,191 | 0.20 | | 0.62 |
| ADUS | Addus HomeCare Corporation | 4.880 | 4.500 | 4.600 | 21,395 | 0.100 | | 2.13 |
| ADVS | Advent Software Inc. | 52.09 | 51.55 | 52.00 | 64,939 | 0.37 | | 0.72 |
| AEHR | Aehr Test Systems | 1.280 | 1.120 | 1.280 | 9,224 | 0.110 | | 9.40 |
| AEIS | Advanced Energy Industries Inc. | 16.10 | 15.41 | 15.71 | 740,023 | 0.41 | | 2.68 |
| AEPI | AEP Industries Inc. | 24.75 | 24.19 | 24.30 | 32,671 | 0.00 | | 0.00 |
| AERG | Applied Energetics Inc | 1.180 | 1.140 | 1.170 | 155,668 | 0.010 | | 0.86 |
| AERL | Asia Entertainment & Resources Ltd | 5.500 | 5.220 | 5.470 | 36,150 | 0.270 | | 5.19 |
| AERLW | Asia Entertainment & Resources Ltd | 0.4800 | 0.4500 | 0.4800 | 25,300 | 0.0200 | | 4.00 |
| AETI | American Electric Technologies Inc. | 2.170 | 2.080 | 2.140 | 1,100 | 0.060 | | 2.73 |
| AEY | ADDvantage Technologies Group Inc. | 3.110 | 3.020 | 3.110 | 8,705 | 0.170 | | 5.78 |
| AEZS | AEterna Zentaris Inc. | 1.170 | 1.130 | 1.140 | 769,623 | 0.030 | | 2.56 |
| AFAM | Almost Family Inc | 26.06 | 25.26 | 25.62 | 99,978 | 0.26 | | 1.00 |
| AFCB | Athens Bancshares Corporation | 10.93 | 10.75 | 10.90 | 6,255 | 0.00 | | 0.00 |
| AFCE | AFC Enterprises Inc. | 12.00 | 10.97 | 11.86 | 128,515 | 0.30 | | 2.60 |
| AFFM | Affirmative Insurance Holdings Inc. | 3.340 | 3.250 | 3.340 | 1,500 | 0.020 | | 0.60 |
| AFFX | Affymetrix Inc. | 4.540 | 4.410 | 4.470 | 776,409 | 0.080 | | 1.82 |
| AFFY | Affymax Inc. | 6.200 | 5.930 | 6.060 | 433,098 | 0.030 | | 0.50 |
| AFOP | Alliance Fiber Optic Products Inc. | 1.700 | 1.610 | 1.660 | 102,886 | 0.030 | | 1.84 |
| AFOPD | Alliance Fiber Optic Products Inc. | 8.230 | 8.030 | 8.220 | 13,502 | 0.100 | | 1.23 |
| AFSI | AmTrust Financial Services Inc. | 14.30 | 14.04 | 14.23 | 175,615 | 0.05 | | 0.35 |
| AGAM | AGA Medical Holdings Inc. | 14.75 | 14.14 | 14.75 | 50,425 | 0.59 | | 4.17 |
| AGEN | Antigenics Inc. | 0.7900 | 0.7600 | 0.7800 | 271,788 | 0.0300 | | 3.95 |
| AGII | Argo Group International Holdings Ltd. | 31.78 | 31.35 | 31.71 | 165,681 | 0.49 | | 1.57 |
| AGNC | American Capital Agency Corp. | 28.42 | 28.12 | 28.37 | 949,981 | 0.09 | | 0.32 |
| AGYS | Agilysys Inc. | 5.000 | 4.750 | 4.980 | 199,727 | 0.320 | | 6.87 |
| AHCI | Allied HealthCare International Inc. | 2.250 | 2.150 | 2.250 | 208,887 | 0.060 | | 2.74 |
| AHGP | Alliance Holdings GP L.P. | 38.50 | 38.01 | 38.19 | 46,247 | 0.18 | | 0.47 |
| AHII | Animal Health International Inc. | 2.570 | 2.500 | 2.540 | 2,500 | 0.040 | | 1.60 |
| AHPI | Allied Healthcare Products Inc. | 4.000 | 3.670 | 4.000 | 12,014 | 0.380 | | 10.50 |
| AIMC | Altra Holdings Inc. | 14.24 | 13.63 | 14.14 | 111,268 | 0.57 | | 4.20 |
| AINV | Apollo Investment Corporation | 10.33 | 10.12 | 10.29 | 1,872,831 | 0.21 | | 2.08 |
| AIRM | Air Methods Corporation | 41.22 | 40.28 | 40.97 | 241,690 | 0.96 | | 2.40 |
| AIRT | Air T Inc. | 9.100 | 8.870 | 8.954 | 6,118 | 0.030 | | 0.33 |
| AIXG | Aixtron Aktiengesellschaft | 27.00 | 26.57 | 26.86 | 263,908 | 0.26 | | 0.98 |
| AKAM | Akamai Technologies Inc. | 51.00 | 49.60 | 49.96 | 3,523,310 | 0.13 | | 0.26 |
| AKRX | Akorn Inc. | 3.800 | 3.700 | 3.740 | 625,040 | 0.060 | | 1.63 |
| ALAN | Alanco Technologies Inc. | 0.1800 | 0.1400 | 0.1600 | 681,652 | 0.0200 | | 11.11 |
| ALAND | Alanco Technologies Inc. | 1.630 | 1.390 | 1.470 | 34,651 | 0.120 | | 8.89 |
| ALCO | Alico Inc. | 21.33 | 21.07 | 21.25 | 5,384 | 0.33 | | 1.58 |
| ALGN | Align Technology Inc. | 17.85 | 17.10 | 17.22 | 496,570 | 0.04 | | 0.23 |
| ALGT | Allegiant Travel Company | 39.85 | 38.41 | 38.80 | 193,374 | 0.72 | | 1.89 |
| ALIM | Alimera Sciences Inc. | 9.100 | 8.520 | 9.030 | 59,417 | 0.290 | | 3.32 |
| ALKS | Alkermes Inc. | 14.32 | 13.85 | 14.24 | 649,391 | 0.31 | | 2.23 |
| ALLB | Alliance Bancorp Inc. of Pennsylvania | 7.520 | 7.500 | 7.500 | 6,551 | 0.250 | | 3.23 |
| ALLT | Allot Communications Ltd. | 5.600 | 5.420 | 5.520 | 26,481 | 0.160 | | 2.99 |
| ALNC | Alliance Financial Corporation | 29.89 | 29.21 | 29.65 | 3,650 | 0.10 | | 0.34 |
| ALNY | Alnylam Pharmaceuticals Inc. | 14.98 | 14.65 | 14.81 | 110,418 | 0.00 | | 0.00 |
| ALOG | Analogic Corporation | 42.96 | 42.12 | 42.65 | 27,918 | 0.45 | | 1.07 |
| ALOT | Astro-Med Inc. | 7.000 | 6.970 | 6.980 | 3,191 | 0.120 | | 1.69 |
| ALOY | Alloy Inc. | 9.640 | 9.600 | 9.630 | 5,351 | 0.020 | | 0.21 |
| ALRN | American Learning Corporation | 0.8000 | 0.8000 | 0.8000 | 1,770 | 0.0700 | | 8.05 |
| ALSK | Alaska Communications Systems Group Inc. | 9.570 | 9.320 | 9.570 | 532,370 | 0.170 | | 1.81 |
| ALTE | Alterra Capital Holdings Ltd | 19.29 | 18.99 | 19.25 | 294,634 | 0.25 | | 1.32 |
| ALTH | Allos Therapeutics Inc. | 4.100 | 4.000 | 4.080 | 610,008 | 0.090 | | 2.26 |
| ALTI | Altair Nanotechnologies Inc. | 0.6400 | 0.5421 | 0.6000 | 2,322,589 | 0.0700 | | 13.21 |
| ALTR | Altera Corporation | 26.94 | 26.21 | 26.83 | 7,026,256 | 0.47 | | 1.78 |
| ALVR | Alvarion Ltd. | 2.000 | 1.900 | 1.960 | 110,071 | 0.010 | | 0.51 |
| ALXA | Alexza Pharmaceuticals Inc. | 3.180 | 3.000 | 3.020 | 873,141 | 0.060 | | 1.95 |
| ALXN | Alexion Pharmaceuticals Inc. | 58.70 | 57.47 | 58.18 | 379,853 | 0.06 | | 0.10 |
| AMAC | American Medical Alert Corp. | 6.450 | 6.320 | 6.450 | 2,031 | 0.050 | | 0.78 |
| AMAG | AMAG Pharmaceuticals Inc. | 25.78 | 25.06 | 25.42 | 283,496 | 0.18 | | 0.71 |
| AMAP | AutoNavi Holdings Limited | 16.21 | 15.36 | 16.00 | 88,178 | 0.80 | | 5.26 |
| AMAT | Applied Materials Inc. | 11.10 | 10.79 | 10.98 | 16,798,289 | 0.19 | | 1.76 |
| AMCC | Applied Micro Circuits Corporation | 11.81 | 11.28 | 11.68 | 1,920,431 | 0.47 | | 4.19 |
| AMCF | Andatee China Marine Fuel Services | 4.120 | 3.880 | 4.070 | 16,290 | 0.040 | | 0.99 |
| AMCN | AirMedia Group Inc | 3.980 | 3.650 | 3.930 | 142,119 | 0.030 | | 0.77 |
| AMED | Amedisys Inc | 25.08 | 24.55 | 24.96 | 425,639 | 0.53 | | 2.17 |
| AMGN | Amgen Inc. | 53.07 | 52.57 | 52.91 | 5,355,289 | 0.40 | | 0.76 |
| AMIC | American Independence Corp. | 4.670 | 4.560 | 4.620 | 1,166 | 0.030 | | 0.65 |
| AMIE | Ambassadors International Inc. | 0.3200 | 0.2400 | 0.2600 | 96,173 | 0.0100 | | 4.00 |
| AMIED | Ambassadors International Inc. | 2.400 | 2.080 | 2.260 | 3,733 | 0.140 | | 5.83 |
| AMIN | American International Industries Inc | 0.8000 | 0.7000 | 0.7900 | 7,750 | 0.0400 | | 5.33 |
| AMKR | Amkor Technology Inc. | 5.870 | 5.530 | 5.820 | 3,585,608 | 0.410 | | 7.58 |
| AMLN | Amylin Pharmaceuticals Inc. | 21.93 | 21.00 | 21.56 | 1,159,559 | 0.12 | | 0.56 |
| AMMD | American Medical Systems Holdings Inc. | 19.21 | 18.83 | 19.16 | 529,077 | 0.29 | | 1.54 |
| AMNB | American National Bankshares Inc. | 20.92 | 20.55 | 20.92 | 4,221 | 0.10 | | 0.48 |
| AMOT | Allied Motion Technologies Inc. | 4.400 | 4.270 | 4.350 | 4,000 | 0.230 | | 5.58 |
| AMOV | America Movil S.A.B. de C.V. | 49.40 | 49.09 | 49.27 | 7,467 | 0.43 | | 0.88 |
| AMPH | American Physicians Service Group Inc. | 32.40 | 32.12 | 32.32 | 86,917 | 0.08 | | 0.25 |
| AMPL | Ampal-American Israel Corporation | 1.730 | 1.680 | 1.730 | 3,122 | 0.030 | | 1.76 |
| AMRB | American River Bankshares | 5.970 | 5.850 | 5.950 | 15,777 | 0.020 | | 0.34 |
| AMRI | Albany Molecular Research Inc. | 6.540 | 6.350 | 6.430 | 58,102 | 0.060 | | 0.92 |
| AMRN | Amarin Corporation PLC | 3.070 | 3.000 | 3.050 | 429,965 | 0.030 | | 0.99 |
| AMSC | American Superconductor Corporation | 29.44 | 28.67 | 29.39 | 479,349 | 0.98 | | 3.45 |
| AMSF | AMERISAFE Inc. | 18.14 | 17.62 | 18.11 | 58,118 | 0.37 | | 2.09 |
| AMSG | Amsurg Corp. | 17.27 | 16.87 | 17.24 | 83,733 | 0.14 | | 0.82 |
| AMSWA | American Software Inc. | 5.280 | 5.190 | 5.270 | 35,648 | 0.040 | | 0.76 |
| AMTC | Ameritrans Capital Corporation | 1.180 | 1.180 | 1.180 | 150 | 0.160 | | 15.69 |
| AMTCP | Ameritrans Capital Corporation | 8.750 | 8.750 | 8.750 | 400 | 0.280 | | 3.10 |
| AMTD | TD Ameritrade Holding Corporation | 15.54 | 15.10 | 15.43 | 5,617,490 | 0.36 | | 2.39 |
| AMWD | American Woodmark Corporation | 16.00 | 15.45 | 15.76 | 29,333 | 0.02 | | 0.13 |
| AMZN | Amazon.com Inc. | 139.5 | 136.6 | 138.8 | 6,581,116 | 3.6 | | 2.65 |
| ANAD | ANADIGICS Inc. | 4.460 | 4.320 | 4.410 | 976,775 | 0.130 | | 3.04 |
| ANAT | American National Insurance Company | 80.72 | 78.01 | 78.26 | 20,029 | 0.28 | | 0.36 |
| ANCI | American Caresource Holdings Inc | 1.570 | 1.530 | 1.540 | 14,545 | 0.030 | | 1.99 |
| ANCX | Access National Corporation | 6.100 | 5.980 | 5.980 | 600 | 0.010 | | 0.17 |
| ANDE | The Andersons Inc. | 37.54 | 36.86 | 37.51 | 231,756 | 0.93 | | 2.54 |
| ANDS | Anadys Pharmaceuticals Inc. | 1.840 | 1.750 | 1.750 | 129,840 | 0.000 | | 0.00 |
| ANEN | Anaren Inc. | 15.25 | 14.97 | 15.07 | 57,473 | 0.22 | | 1.48 |
| ANGN | Angeion Corporation | 4.490 | 4.330 | 4.490 | 15,735 | 0.180 | | 4.18 |
| ANGO | AngioDynamics Inc. | 15.71 | 15.45 | 15.60 | 151,738 | 0.12 | | 0.78 |
| ANIK | Anika Therapeutics Inc. | 5.190 | 5.030 | 5.100 | 11,864 | 0.030 | | 0.58 |
| ANLY | Analysts International Corporation | 2.330 | 2.300 | 2.330 | 400 | 0.020 | | 0.85 |
| ANNB | Annapolis Bancorp Inc. | 4.000 | 3.970 | 3.970 | 350 | 0.010 | | 0.25 |
| ANPI | Angiotech Pharmaceuticals Inc. | 0.4500 | 0.4300 | 0.4400 | 66,425 | 0.0000 | | 0.00 |
| ANSS | ANSYS Inc. | 41.23 | 40.21 | 40.66 | 286,360 | 0.65 | | 1.62 |
| ANSW | Answers Corporation | 5.210 | 5.040 | 5.140 | 32,292 | 0.010 | | 0.19 |
| ANTH | Anthera Pharmaceuticals Inc. | 3.960 | 3.840 | 3.950 | 6,653 | 0.100 | | 2.60 |
| ANTP | PHAZAR CORP | 2.940 | 2.790 | 2.940 | 396 | 0.030 | | 1.01 |
| AONE | A123 Systems Inc. | 7.770 | 7.500 | 7.660 | 2,173,926 | 0.340 | | 4.64 |
| AOSL | Alpha and Omega Semiconductor Limited | 11.48 | 11.35 | 11.45 | 23,086 | 0.09 | | 0.79 |
| APAC | APAC Customer Services Inc. | 5.240 | 5.060 | 5.180 | 282,643 | 0.110 | | 2.17 |
| APAGF | Apco Oil and Gas International Inc. | 27.00 | 26.36 | 26.83 | 19,138 | 0.38 | | 1.44 |
| APCVZ | Fresenius Kabi Pharmaceuticals Holding | 0.0600 | 0.0500 | 0.0501 | 1,656,898 | 0.0000 | | 0.00 |
| APEI | American Public Education Inc. | 26.83 | 26.09 | 26.41 | 98,042 | 0.08 | | 0.30 |
| APFC | American Pacific Corporation | 4.620 | 4.410 | 4.540 | 6,930 | 0.040 | | 0.89 |
| APKT | Acme Packet Inc. | 36.60 | 35.27 | 36.41 | 1,739,642 | 1.08 | | 3.06 |
| APOG | Apogee Enterprises Inc. | 9.930 | 9.560 | 9.790 | 98,547 | 0.220 | | 2.30 |
| APOL | Apollo Group Inc. | 45.48 | 44.95 | 45.38 | 1,686,988 | 0.71 | | 1.59 |
| APPA | A.P. Pharma Inc. | 0.6450 | 0.5730 | 0.6221 | 70,988 | 0.0300 | | 5.08 |
| APPY | AspenBio Pharma Inc. | 0.5800 | 0.5400 | 0.5500 | 162,160 | 0.0300 | | 5.17 |
| APSA | Alto Palermo S.A. | 9.400 | 9.300 | 9.400 | 950 | 0.100 | | 1.08 |
| APSG | Applied Signal Technology Inc. | 21.94 | 21.31 | 21.68 | 64,174 | 0.07 | | 0.32 |
| APWR | A-Power Energy Generation Systems Ltd. | 6.190 | 5.890 | 6.010 | 761,063 | 0.040 | | 0.66 |
| ARAY | Accuray Incorporated | 6.310 | 6.100 | 6.130 | 479,937 | 0.040 | | 0.65 |
| ARBA | Ariba Inc. | 16.58 | 16.10 | 16.47 | 627,544 | 0.28 | | 1.73 |
| ARBX | Arbinet Corporation | 7.700 | 7.570 | 7.690 | 9,800 | 0.020 | | 0.26 |
| ARCC | Ares Capital Corporation | 15.72 | 15.37 | 15.66 | 1,452,211 | 0.25 | | 1.62 |
| ARCI | Appliance Recycling Centers of America | 2.750 | 2.600 | 2.620 | 1,900 | 0.120 | | 4.38 |
| ARCL | Archipelago Learning Inc. | 10.62 | 10.01 | 10.58 | 31,039 | 0.08 | | 0.76 |
| ARCW | Arc Wireless Solutions Inc. | 2.550 | 2.550 | 2.550 | 100 | 0.100 | | 3.77 |
| ARDNA | Arden Group Inc. | 89.50 | 88.33 | 89.34 | 1,019 | 0.36 | | 0.40 |
| AREX | Approach Resources Inc. | 9.100 | 8.970 | 9.050 | 32,348 | 0.020 | | 0.22 |
| ARGN | Amerigon Incorporated | 11.96 | 11.22 | 11.54 | 247,925 | 0.00 | | 0.00 |
| ARIA | ARIAD Pharmaceuticals Inc. | 3.580 | 3.510 | 3.570 | 824,182 | 0.020 | | 0.56 |
| ARII | American Railcar Industries Inc. | 13.15 | 12.52 | 12.91 | 43,226 | 0.19 | | 1.49 |
| ARKR | Ark Restaurants Corp. | 14.85 | 14.30 | 14.79 | 3,255 | 0.49 | | 3.43 |
| ARLP | Alliance Resource Partners L.P. | 56.08 | 54.50 | 54.62 | 118,088 | 1.29 | | 2.31 |
| ARMH | ARM Holdings plc | 17.31 | 16.91 | 17.22 | 4,109,782 | 0.44 | | 2.62 |
| ARNA | Arena Pharmaceuticals Inc. | 6.970 | 6.690 | 6.860 | 5,767,621 | 0.120 | | 1.78 |
| AROW | Arrow Financial Corporation | 24.21 | 23.76 | 24.15 | 14,555 | 0.40 | | 1.68 |
| ARQL | ArQule Inc. | 5.500 | 5.200 | 5.400 | 558,993 | 0.020 | | 0.37 |
| ARRS | Arris Group Inc | 8.780 | 8.530 | 8.700 | 1,175,269 | 0.230 | | 2.72 |
| ARRY | Array BioPharma Inc. | 2.890 | 2.730 | 2.810 | 165,315 | 0.040 | | 1.40 |
| ARSD | Arabian American Development Company | 2.080 | 1.900 | 2.080 | 12,800 | 0.060 | | 2.97 |
| ARST | Arc Sight Inc. | 38.20 | 35.27 | 37.34 | 1,428,435 | 0.50 | | 1.32 |
| ARTC | ArthroCare Corporation | 27.51 | 26.61 | 27.30 | 81,493 | 0.54 | | 2.02 |
| ARTG | Art Technology Group Inc. | 3.690 | 3.620 | 3.680 | 647,129 | 0.020 | | 0.55 |
| ARTNA | Artesian Resources Corporation | 18.25 | 17.87 | 18.10 | 9,885 | 0.15 | | 0.82 |
| ARTW | Art's-Way Manufacturing Co. Inc. | 6.180 | 5.760 | 6.120 | 8,900 | 0.020 | | 0.33 |
| ARTX | Arotech Corporation | 1.660 | 1.600 | 1.610 | 18,019 | 0.010 | | 0.63 |
| ARUN | Aruba Networks Inc. | 19.56 | 18.92 | 19.49 | 3,009,427 | 0.67 | | 3.56 |
| ARWR | Arrowhead Research Corporation | 1.050 | 0.990 | 1.030 | 204,038 | 0.000 | | 0.00 |
| ARYX | ARYx Therapeutics Inc. | 0.4200 | 0.3700 | 0.3950 | 85,545 | 0.0300 | | 8.11 |
| ASBC | Associated Banc-Corp | 12.99 | 12.43 | 12.97 | 1,299,481 | 0.44 | | 3.51 |
| ASBI | Ameriana Bancorp | 3.880 | 3.880 | 3.880 | 216 | 0.000 | | 0.00 |
| ASCA | Ameristar Casinos Inc. | 17.24 | 16.71 | 16.91 | 226,793 | 0.05 | | 0.29 |
| ASCMA | Ascent Media Corporation | 28.76 | 27.90 | 28.74 | 20,216 | 0.73 | | 2.61 |
| ASEI | American Science and Engineering Inc. | 74.80 | 73.05 | 73.39 | 47,321 | 0.99 | | 1.33 |
| ASFI | Asta Funding Inc. | 8.290 | 7.980 | 8.290 | 24,189 | 0.260 | | 3.24 |
| ASFN | Atlantic Southern Financial Group Inc. | 1.124 | 1.070 | 1.070 | 1,916 | 0.080 | | 6.96 |
| ASGN | On Assignment Inc. | 4.980 | 4.720 | 4.940 | 113,913 | 0.180 | | 3.78 |
| ASGR | America Service Group Inc. | 15.18 | 14.29 | 14.91 | 28,162 | 0.12 | | 0.81 |
| ASIA | AsiaInfo-Linkage Inc. | 18.49 | 17.92 | 18.02 | 1,070,964 | 0.18 | | 0.99 |
| ASMI | ASM International N.V. | 23.41 | 23.09 | 23.40 | 23,692 | 0.34 | | 1.47 |
| ASML | ASML Holding N.V. | 27.14 | 26.56 | 26.91 | 2,415,500 | 0.39 | | 1.47 |
| ASPS | Altisource Portfolio Solutions S.A. | 27.70 | 26.56 | 26.65 | 153,888 | 0.77 | | 2.81 |
| ASRV | AmeriServ Financial Inc. | 1.720 | 1.620 | 1.720 | 7,172 | 0.020 | | 1.18 |
| ASRVP | AmeriServ Financial Inc. | 22.78 | 22.76 | 22.78 | 277 | 0.47 | | 2.02 |
| ASTC | Astrotech Corporation | 1.290 | 1.210 | 1.280 | 95,682 | 0.040 | | 3.23 |
| ASTE | Astec Industries Inc. | 27.84 | 27.08 | 27.23 | 129,707 | 0.03 | | 0.11 |
| ASTI | Ascent Solar Technologies Inc. | 2.450 | 2.280 | 2.290 | 113,210 | 0.130 | | 5.37 |
| ASTIZ | Ascent Solar Technologies Inc. | 0.3200 | 0.2900 | 0.3200 | 12,990 | 0.0200 | | 6.67 |
| ASTM | Aastrom Biosciences Inc. | 1.510 | 1.470 | 1.480 | 34,150 | 0.020 | | 1.33 |
| ASUR | Asure Software Inc | 2.540 | 2.500 | 2.500 | 6,240 | 0.020 | | 0.79 |
| ASYS | Amtech Systems Inc. | 16.49 | 15.80 | 15.92 | 408,230 | 0.14 | | 0.89 |
| ATAC | ATC Technology Corporation | 24.45 | 24.27 | 24.34 | 292,532 | 0.05 | | 0.21 |
| ATAI | ATA Inc. | 3.030 | 2.900 | 2.950 | 22,364 | 0.020 | | 0.67 |
| ATAX | America First Tax Exempt Investors L.P. | 5.640 | 5.530 | 5.630 | 141,606 | 0.040 | | 0.72 |
| ATBC | Atlantic BancGroup Inc | 1.990 | 1.830 | 1.970 | 4,000 | 0.010 | | 0.51 |
| ATEA | Astea International Inc. | 2.240 | 2.110 | 2.110 | 400 | 0.050 | | 2.31 |
| ATEC | Alphatec Holdings Inc. | 2.430 | 2.200 | 2.250 | 941,678 | 0.070 | | 3.02 |
| ATHN | athenahealth Inc. | 28.15 | 27.17 | 27.71 | 348,973 | 0.04 | | 0.14 |
| ATHR | Atheros Communications Inc. | 27.15 | 26.21 | 26.49 | 2,194,282 | 0.18 | | 0.68 |
| ATHX | Athersys Inc. | 2.890 | 2.780 | 2.800 | 27,772 | 0.010 | | 0.36 |
| ATLO | Ames National Corporation | 18.39 | 17.50 | 18.39 | 10,058 | 0.81 | | 4.61 |
| ATLS | Atlas Energy Inc. | 28.98 | 28.32 | 28.73 | 322,831 | 0.46 | | 1.63 |
| ATMI | ATMI Inc. | 13.78 | 13.44 | 13.73 | 109,983 | 0.35 | | 2.62 |
| ATML | Atmel Corporation | 6.390 | 6.180 | 6.350 | 7,554,291 | 0.240 | | 3.93 |
| ATNI | Atlantic Tele-Network Inc. | 45.63 | 44.09 | 45.42 | 30,931 | 1.45 | | 3.30 |
| ATPG | ATP Oil & Gas Corporation | 12.25 | 11.60 | 12.20 | 2,505,149 | 0.70 | | 6.09 |
| ATRC | AtriCure Inc. | 7.870 | 7.750 | 7.850 | 13,733 | 0.020 | | 0.26 |
| ATRI | ATRION Corporation | 142.0 | 142.0 | 142.0 | 769 | 1.2 | | 0.84 |
| ATRM | Aetrium Incorporated | 2.650 | 2.520 | 2.540 | 5,201 | 0.130 | | 4.87 |
| ATRN | Atrinsic Inc. | 0.4100 | 0.3900 | 0.4100 | 1,260 | 0.0100 | | 2.50 |
| ATRO | Astronics Corporation | 16.72 | 14.71 | 16.64 | 63,662 | 1.51 | | 9.98 |
| ATSG | Air Transport Services Group Inc | 5.010 | 4.830 | 4.980 | 252,854 | 0.070 | | 1.43 |
| ATSI | ATS Medical Inc. | 4.000 | 3.990 | 4.000 | 714,457 | 0.010 | | 0.25 |
| ATVI | Activision Blizzard Inc | 11.22 | 11.04 | 11.21 | 6,527,353 | 0.20 | | 1.82 |
| ATX | Cross (A.T.) Company | 5.850 | 5.760 | 5.800 | 1,000 | 0.000 | | 0.00 |
| AUBN | Auburn National Bancorporation Inc. | 20.77 | 20.67 | 20.77 | 1,550 | 0.01 | | 0.05 |
| AUDC | AudioCodes Ltd. | 2.880 | 2.800 | 2.840 | 52,346 | 0.000 | | 0.00 |
| AUTC | AutoChina International Limited | 24.25 | 23.00 | 23.02 | 2,515 | 0.14 | | 0.61 |
| AUTH | AuthenTec Inc. | 1.840 | 1.720 | 1.760 | 61,784 | 0.010 | | 0.57 |
| AUXL | Auxilium Pharmaceuticals Inc. | 28.56 | 27.46 | 27.48 | 636,279 | 0.14 | | 0.51 |
| AVAV | AeroVironment Inc. | 24.21 | 23.76 | 23.99 | 130,089 | 0.02 | | 0.08 |
| AVCA | Advocat Inc. | 5.500 | 5.320 | 5.500 | 7,902 | 0.010 | | 0.18 |
| AVEO | AVEO Pharmaceuticals Inc. | 9.300 | 8.570 | 8.690 | 42,906 | 0.080 | | 0.93 |
| AVGO | Avago Technologies Limited | 21.20 | 20.73 | 20.98 | 524,001 | 0.07 | | 0.33 |
| AVID | Avid Technology Inc. | 11.80 | 11.50 | 11.77 | 70,571 | 0.28 | | 2.44 |
| AVII | AVI BioPharma Inc. | 2.200 | 2.150 | 2.180 | 1,285,813 | 0.040 | | 1.87 |
| AVNR | Avanir Pharmaceuticals Inc | 2.990 | 2.640 | 2.710 | 2,737,590 | 0.210 | | 7.19 |
| AVNW | Aviat Networks Inc. | 4.160 | 4.060 | 4.070 | 377,380 | 0.050 | | 1.21 |
| AVTR | Avatar Holdings Inc. | 18.33 | 17.75 | 18.29 | 18,235 | 0.31 | | 1.72 |
| AWRE | Aware Inc. | 2.330 | 2.260 | 2.280 | 700 | 0.060 | | 2.56 |
| AXAS | Abraxas Petroleum Corporation | 2.600 | 2.560 | 2.570 | 198,204 | 0.010 | | 0.39 |
| AXFN | iShares MSCI ACWI ex US Financials | 23.26 | 23.26 | 23.26 | 100 | 0.27 | | 1.17 |
| AXTI | AXT Inc | 6.050 | 5.800 | 5.940 | 438,341 | 0.090 | | 1.54 |
| AZPN | Aspen Technology Inc. | 9.940 | 9.610 | 9.890 | 371,949 | 0.290 | | 3.02 |