| Code | Name | High | Low | Close | Volume | Change |
| DAIO | Data I/O Corporation | 3.970 | 3.800 | 3.960 | 5,850 | 0.090 |  | 2.33 |
| DAKT | Daktronics Inc. | 8.170 | 7.950 | 8.070 | 92,930 | 0.050 |  | 0.62 |
| DARA | DARA Biosciences Inc. | 0.4800 | 0.4200 | 0.4700 | 498,404 | 0.0400 |  | 9.30 |
| DAVE | Famous Dave's of America Inc. | 5.720 | 5.500 | 5.690 | 23,341 | 0.010 |  | 0.18 |
| DBLE | Double Eagle Petroleum Company | 4.560 | 4.390 | 4.540 | 21,219 | 0.140 |  | 3.18 |
| DBLEP | Double Eagle Petroleum Company | 22.59 | 22.53 | 22.59 | 944 | 0.21 |  | 0.94 |
| DBRN | Dress Barn Inc. (The) | 22.42 | 21.13 | 21.68 | 2,896,305 | 1.16 |  | 5.65 |
| DBTK | Double-Take Software Inc. | 9.290 | 9.010 | 9.110 | 114,941 | 0.070 |  | 0.77 |
| DCAI | Dialysis Corporation of America | 7.460 | 7.080 | 7.220 | 1,400 | 0.010 |  | 0.14 |
| DCGN | deCODE genetics Inc. | 0.0500 | 0.0300 | 0.0400 | 8,843,227 | 0.0100 |  | 33.33 |
| DCOM | Dime Community Bancshares Inc. | 11.68 | 11.41 | 11.63 | 66,176 | 0.15 |  | 1.31 |
| DCTH | Delcath Systems Inc. | 5.180 | 4.370 | 4.890 | 1,417,506 | 0.480 |  | 10.88 |
| DDIC | DDi Corp. | 4.030 | 3.830 | 4.000 | 23,065 | 0.100 |  | 2.56 |
| DDMX | Dynamex Inc. | 18.60 | 18.30 | 18.50 | 71,716 | 0.01 |  | 0.05 |
| DDRX | Diedrich Coffee | 26.00 | 25.85 | 25.99 | 40,468 | 0.02 |  | 0.08 |
| DDSS | Labopharm Inc. | 1.440 | 1.370 | 1.410 | 260,034 | 0.010 |  | 0.71 |
| DEAR | Dearborn Bancorp Inc. | 0.7700 | 0.7500 | 0.7700 | 2,000 | 0.0900 |  | 13.24 |
| DECC | D&E Communications Inc. | 11.68 | 11.37 | 11.54 | 66,220 | 0.09 |  | 0.77 |
| DECK | Deckers Outdoor Corporation | 95.96 | 93.74 | 95.72 | 246,572 | 0.23 |  | 0.24 |
| DEER | DEER CONSUMER PR NEW | 18.08 | 17.50 | 17.80 | 140,479 | 0.16 |  | 0.89 |
| DELL | Dell Inc. | 14.69 | 14.24 | 14.29 | 94,463,125 | 1.58 |  | 9.96 |
| DENN | Denny's Corporation | 2.320 | 2.180 | 2.190 | 1,023,596 | 0.110 |  | 4.78 |
| DEPO | DepoMed Inc. | 3.300 | 3.240 | 3.300 | 291,783 | 0.030 |  | 0.92 |
| DEST | DESTINATION MATERNITY GROUP | 20.83 | 19.55 | 20.20 | 13,533 | 0.29 |  | 1.42 |
| DFZ | R.G. Barry Corporation | 9.010 | 8.820 | 8.940 | 16,662 | 0.060 |  | 0.67 |
| DGAS | Delta Natural Gas Company Inc. | 27.84 | 27.27 | 27.58 | 3,575 | 0.34 |  | 1.22 |
| DGICA | Donegal Group Inc. | 15.00 | 14.60 | 14.98 | 61,124 | 0.19 |  | 1.28 |
| DGICB | Donegal Group Inc. | 16.53 | 16.53 | 16.53 | 100 | 0.17 |  | 1.04 |
| DGII | Digi International Inc. | 7.790 | 7.590 | 7.700 | 65,790 | 0.010 |  | 0.13 |
| DGIT | DG FastChannel Inc. | 27.89 | 26.74 | 26.90 | 122,675 | 0.87 |  | 3.13 |
| DGLY | Digital Ally Inc. | 1.820 | 1.710 | 1.730 | 66,792 | 0.060 |  | 3.35 |
| DHFT | Diamond Hill Financial Trends Fund Inc. | 7.880 | 7.730 | 7.880 | 7,585 | 0.010 |  | 0.13 |
| DHIL | Diamond Hill Investment Group Inc. | 66.96 | 65.50 | 66.96 | 13,106 | 1.26 |  | 1.92 |
| DIET | eDiets.com Inc. | 1.520 | 1.430 | 1.430 | 6,452 | 0.020 |  | 1.38 |
| DIGA | Digital Angel Corporation | 0.9000 | 0.8500 | 0.8800 | 38,642 | 0.0200 |  | 2.33 |
| DINE | Rewards Network Inc. | 11.60 | 11.31 | 11.56 | 12,622 | 0.08 |  | 0.70 |
| DIOD | Diodes Incorporated | 18.09 | 17.54 | 17.89 | 222,813 | 0.17 |  | 0.96 |
| DISCA | Discovery Holding Co | 31.41 | 30.48 | 31.16 | 1,183,639 | 0.04 |  | 0.13 |
| DISCB | Discovery Holding Co | 31.99 | 31.43 | 31.99 | 380 | 0.87 |  | 2.80 |
| DISCK | DISCOVERY COMM INC | 27.77 | 26.79 | 27.40 | 328,275 | 0.11 |  | 0.40 |
| DISH | DISH Network Corporation | 20.03 | 19.67 | 19.99 | 2,201,896 | 0.13 |  | 0.65 |
| DISK | Image Entertainment Inc. | 0.6800 | 0.6300 | 0.6400 | 32,630 | 0.0100 |  | 1.59 |
| DITC | Ditech Networks Inc. | 1.400 | 1.210 | 1.240 | 20,710 | 0.060 |  | 4.62 |
| DIVX | DivX Inc. | 5.270 | 5.150 | 5.210 | 92,487 | 0.010 |  | 0.19 |
| DJCO | Daily Journal Corp. (S.C.) | 56.00 | 55.80 | 56.00 | 1,152 | 0.00 |  | 0.00 |
| DLIA | dELIA*s Inc. | 2.020 | 1.950 | 1.970 | 33,943 | 0.030 |  | 1.50 |
| DLLR | Dollar Financial Corp. | 23.58 | 22.89 | 23.25 | 147,002 | 0.14 |  | 0.60 |
| DLTR | Dollar Tree Inc. | 48.98 | 48.52 | 48.93 | 754,810 | 0.18 |  | 0.37 |
| DMAN | DemandTec Inc. | 8.900 | 8.330 | 8.520 | 86,839 | 0.200 |  | 2.29 |
| DMLP | Dorchester Minerals L.P. | 21.57 | 20.85 | 20.85 | 59,776 | 0.51 |  | 2.39 |
| DMND | Diamond Foods Inc. | 31.41 | 30.38 | 31.25 | 109,609 | 0.83 |  | 2.73 |
| DMRC | Digimarc Corporation | 14.61 | 14.27 | 14.57 | 6,273 | 0.23 |  | 1.60 |
| DNBF | DNB FINANCIAL CORP | 7.290 | 6.110 | 6.580 | 1,776 | 0.300 |  | 4.78 |
| DNBK | Danvers Bancorp Inc. | 13.82 | 13.53 | 13.78 | 42,097 | 0.13 |  | 0.95 |
| DNDN | Dendreon Corporation | 28.68 | 27.80 | 28.01 | 2,716,076 | 0.04 |  | 0.14 |
| DNEX | Dionex Corporation | 69.84 | 68.81 | 69.36 | 58,636 | 0.10 |  | 0.14 |
| DORM | Dorman Products Inc. | 16.00 | 15.38 | 15.99 | 45,416 | 0.44 |  | 2.83 |
| DOVR | Dover Saddlery Inc. | 2.290 | 2.100 | 2.120 | 700 | 0.110 |  | 5.47 |
| DPTR | Delta Petroleum Corporation | 0.9400 | 0.9000 | 0.9200 | 4,559,117 | 0.0000 |  | 0.00 |
| DRAD | Digirad Corporation | 2.300 | 2.190 | 2.220 | 26,598 | 0.030 |  | 1.33 |
| DRAM | Dataram Corporation | 4.780 | 3.260 | 4.750 | 2,230,031 | 1.360 |  | 40.12 |
| DRCO | Dynamics Research Corporation | 12.00 | 11.57 | 11.88 | 21,311 | 0.06 |  | 0.51 |
| DRIV | Digital River Inc. | 26.42 | 25.95 | 26.04 | 673,319 | 0.18 |  | 0.69 |
| DROOY | DRDGOLD | 5.640 | 5.320 | 5.540 | 300,176 | 0.040 |  | 0.73 |
| DRRX | Durect Corporation | 2.200 | 2.060 | 2.090 | 202,510 | 0.020 |  | 0.95 |
| DRWI | DRAGONWAVE INC | 8.690 | 8.480 | 8.630 | 141,837 | 0.030 |  | 0.35 |
| DRYS | DryShips Inc. | 6.490 | 6.150 | 6.290 | 72,938,812 | 0.240 |  | 3.68 |
| DSCM | drugstore.com inc. | 2.920 | 2.820 | 2.910 | 305,765 | 0.060 |  | 2.11 |
| DSCO | Discovery Laboratories Inc. | 0.7500 | 0.7100 | 0.7300 | 1,431,652 | 0.0100 |  | 1.35 |
| DSGX | Descartes Systems Group Inc. (The) | 5.190 | 4.980 | 4.980 | 28,317 | 0.250 |  | 4.78 |
| DSPG | DSP Group Inc. | 6.230 | 6.040 | 6.180 | 63,724 | 0.080 |  | 1.31 |
| DSTI | DayStar Technologies Inc. | 0.5200 | 0.4700 | 0.5200 | 498,131 | 0.0000 |  | 0.00 |
| DSWL | Deswell Industries Inc. | 4.050 | 3.730 | 3.870 | 1,780 | 0.040 |  | 1.04 |
| DTLK | Datalink Corporation | 4.040 | 3.850 | 4.000 | 97,300 | 0.070 |  | 1.78 |
| DTPI | Diamond Management & Technology | 6.980 | 6.680 | 6.820 | 62,579 | 0.120 |  | 1.73 |
| DTSI | DTS Inc. | 30.07 | 29.65 | 29.99 | 102,735 | 0.13 |  | 0.44 |
| DTV | The DIRECTV Group Inc. | 32.07 | 30.88 | 31.54 | 37,609,541 | 0.04 |  | 0.13 |
| DUCK | Duckwall-Alco Stores Inc. | 16.20 | 14.99 | 15.01 | 6,273 | 0.73 |  | 4.64 |
| DUSA | DUSA Pharmaceuticals Inc. | 1.700 | 1.570 | 1.620 | 42,247 | 0.030 |  | 1.89 |
| DVAX | Dynavax Technologies Corporation | 1.290 | 1.250 | 1.260 | 167,611 | 0.030 |  | 2.33 |
| DWA | DREAMWORKS ANIMATION | 32.73 | 32.05 | 32.58 | 594,803 | 0.36 |  | 1.09 |
| DWCH | Datawatch Corporation | 2.210 | 2.050 | 2.190 | 7,300 | 0.100 |  | 4.37 |
| DWMT | Merrill Lynch & Co. Inc. | 9.770 | 9.630 | 9.630 | 1,300 | 0.060 |  | 0.63 |
| DWSN | Dawson Geophysical Company | 22.38 | 21.51 | 21.98 | 91,234 | 0.06 |  | 0.27 |
| DXCM | DexCom Inc. | 7.460 | 7.190 | 7.270 | 132,098 | 0.000 |  | 0.00 |
| DXPE | DXP Enterprises Inc. | 12.24 | 11.84 | 12.04 | 45,604 | 0.11 |  | 0.91 |
| DXYN | Dixie Group Inc. (The) | 2.610 | 2.550 | 2.580 | 6,159 | 0.030 |  | 1.18 |
| DYAX | Dyax Corp. | 4.020 | 3.690 | 3.910 | 816,339 | 0.260 |  | 7.12 |
| DYII | Dynacq Healthcare Inc. | 3.410 | 3.410 | 3.410 | 1,100 | 0.020 |  | 0.59 |
| DYNT | Dynatronics Corporation | 0.7400 | 0.6500 | 0.7200 | 22,574 | 0.0300 |  | 4.35 |