| Code | Name | High | Low | Close | Volume | Change |
| DAIO | Data I/O Corporation | 4.200 | 3.840 | 4.030 | 43,150 | 0.340 |  | 9.21 |
| DAKT | Daktronics Inc. | 8.250 | 7.900 | 8.170 | 136,528 | 0.010 |  | 0.12 |
| DARA | DARA Biosciences Inc. | 0.3600 | 0.3400 | 0.3500 | 228,054 | 0.0000 |  | 0.00 |
| DAVE | Famous Dave's of America Inc. | 6.240 | 6.120 | 6.160 | 7,571 | 0.060 |  | 0.96 |
| DBLE | Double Eagle Petroleum Company | 4.930 | 4.660 | 4.760 | 35,133 | 0.220 |  | 4.42 |
| DBLEP | Double Eagle Petroleum Company | 22.37 | 21.83 | 22.37 | 200 | 0.53 |  | 2.43 |
| DBRN | Dress Barn Inc. (The) | 18.44 | 17.89 | 18.32 | 630,278 | 0.27 |  | 1.50 |
| DBTK | Double-Take Software Inc. | 9.600 | 9.170 | 9.500 | 163,405 | 0.030 |  | 0.31 |
| DCAI | Dialysis Corporation of America | 7.000 | 6.700 | 6.955 | 3,321 | 0.070 |  | 1.02 |
| DCGN | deCODE genetics Inc. | 0.3195 | 0.2900 | 0.3000 | 77,076 | 0.0100 |  | 3.45 |
| DCOM | Dime Community Bancshares Inc. | 11.07 | 10.55 | 11.07 | 103,991 | 0.22 |  | 2.03 |
| DCTH | Delcath Systems Inc. | 4.750 | 4.470 | 4.510 | 147,438 | 0.060 |  | 1.31 |
| DDIC | DDi Corp. | 4.110 | 3.860 | 4.020 | 19,083 | 0.040 |  | 0.99 |
| DDMX | Dynamex Inc. | 19.07 | 18.74 | 18.82 | 24,025 | 0.00 |  | 0.00 |
| DDRX | Diedrich Coffee | 26.49 | 25.75 | 26.40 | 321,655 | 0.41 |  | 1.58 |
| DDSS | Labopharm Inc. | 1.680 | 1.460 | 1.510 | 848,064 | 0.180 |  | 10.65 |
| DEAR | Dearborn Bancorp Inc. | 0.7500 | 0.5500 | 0.6100 | 80,054 | 0.0600 |  | 10.91 |
| DECC | D&E Communications Inc. | 11.71 | 11.51 | 11.63 | 57,193 | 0.02 |  | 0.17 |
| DECK | Deckers Outdoor Corporation | 94.19 | 90.30 | 93.17 | 323,992 | 0.26 |  | 0.28 |
| DEER | DEER CONSUMER PR NEW | 15.30 | 13.56 | 14.12 | 76,970 | 0.64 |  | 4.34 |
| DELL | Dell Inc. | 14.97 | 14.68 | 14.86 | 11,771,991 | 0.05 |  | 0.34 |
| DENN | Denny's Corporation | 2.300 | 2.230 | 2.290 | 263,348 | 0.010 |  | 0.43 |
| DEPO | DepoMed Inc. | 3.140 | 3.030 | 3.140 | 277,905 | 0.070 |  | 2.28 |
| DEST | DESTINATION MATERNITY GROUP | 20.02 | 19.10 | 19.55 | 7,516 | 0.36 |  | 1.81 |
| DFZ | R.G. Barry Corporation | 9.160 | 8.740 | 9.160 | 34,451 | 0.210 |  | 2.35 |
| DGAS | Delta Natural Gas Company Inc. | 27.50 | 26.66 | 27.10 | 2,742 | 0.39 |  | 1.42 |
| DGICA | Donegal Group Inc. | 15.00 | 14.62 | 14.81 | 11,518 | 0.29 |  | 1.92 |
| DGICB | Donegal Group Inc. | 19.80 | 19.80 | 19.80 | 400 | 0.15 |  | 0.75 |
| DGII | Digi International Inc. | 7.380 | 7.120 | 7.370 | 109,348 | 0.170 |  | 2.36 |
| DGIT | DG FastChannel Inc. | 26.33 | 24.97 | 26.22 | 417,907 | 0.80 |  | 3.15 |
| DGLY | Digital Ally Inc. | 2.090 | 1.850 | 1.950 | 98,775 | 0.020 |  | 1.02 |
| DHFT | Diamond Hill Financial Trends Fund Inc. | 7.710 | 7.574 | 7.710 | 6,237 | 0.070 |  | 0.92 |
| DHIL | Diamond Hill Investment Group Inc. | 61.71 | 60.00 | 61.45 | 32,959 | 1.18 |  | 1.96 |
| DIET | eDiets.com Inc. | 1.520 | 1.450 | 1.510 | 10,750 | 0.010 |  | 0.66 |
| DIGA | Digital Angel Corporation | 0.9700 | 0.8900 | 0.9100 | 116,971 | 0.0400 |  | 4.21 |
| DINE | Rewards Network Inc. | 11.85 | 11.20 | 11.41 | 26,976 | 0.18 |  | 1.55 |
| DIOD | Diodes Incorporated | 16.70 | 16.00 | 16.18 | 224,532 | 0.32 |  | 1.94 |
| DISCA | Discovery Holding Co | 30.07 | 29.21 | 30.07 | 1,735,643 | 0.43 |  | 1.45 |
| DISCB | Discovery Holding Co | 29.92 | 27.00 | 29.92 | 200 | 2.72 |  | 10.00 |
| DISCK | DISCOVERY COMM INC | 26.08 | 25.28 | 26.08 | 205,358 | 0.40 |  | 1.56 |
| DISH | DISH Network Corporation | 19.18 | 18.15 | 19.15 | 6,734,421 | 0.69 |  | 3.74 |
| DISK | Image Entertainment Inc. | 0.8100 | 0.7800 | 0.8100 | 4,500 | 0.0300 |  | 3.85 |
| DITC | Ditech Networks Inc. | 1.420 | 1.290 | 1.400 | 10,675 | 0.050 |  | 3.70 |
| DIVX | DivX Inc. | 5.390 | 5.100 | 5.250 | 164,378 | 0.050 |  | 0.96 |
| DJCO | Daily Journal Corp. (S.C.) | 55.00 | 55.00 | 55.00 | 190 | 0.00 |  | 0.00 |
| DLIA | dELIA*s Inc. | 2.090 | 2.010 | 2.040 | 593,245 | 0.020 |  | 0.97 |
| DLLR | Dollar Financial Corp. | 22.05 | 21.26 | 21.75 | 117,754 | 0.12 |  | 0.55 |
| DLTR | Dollar Tree Inc. | 48.78 | 47.53 | 48.78 | 1,696,396 | 0.46 |  | 0.95 |
| DMAN | DemandTec Inc. | 9.390 | 9.030 | 9.260 | 72,871 | 0.060 |  | 0.64 |
| DMLP | Dorchester Minerals L.P. | 22.16 | 21.75 | 22.00 | 33,519 | 0.03 |  | 0.14 |
| DMND | Diamond Foods Inc. | 30.55 | 29.19 | 29.86 | 240,206 | 0.35 |  | 1.19 |
| DMRC | Digimarc Corporation | 14.24 | 13.93 | 14.24 | 14,450 | 0.16 |  | 1.14 |
| DNBF | DNB FINANCIAL CORP | 6.940 | 5.910 | 5.910 | 250 | 0.000 |  | 0.00 |
| DNBK | Danvers Bancorp Inc. | 13.80 | 13.36 | 13.67 | 55,470 | 0.13 |  | 0.94 |
| DNDN | Dendreon Corporation | 28.62 | 27.68 | 28.61 | 2,600,277 | 0.83 |  | 2.99 |
| DNEX | Dionex Corporation | 68.83 | 67.09 | 67.88 | 36,723 | 0.04 |  | 0.06 |
| DORM | Dorman Products Inc. | 14.92 | 14.49 | 14.84 | 15,430 | 0.06 |  | 0.40 |
| DOVR | Dover Saddlery Inc. | 2.550 | 2.010 | 2.010 | 7,000 | 0.490 |  | 19.60 |
| DPTR | Delta Petroleum Corporation | 1.170 | 1.100 | 1.160 | 6,977,698 | 0.020 |  | 1.75 |
| DRAD | Digirad Corporation | 2.350 | 2.210 | 2.290 | 21,688 | 0.050 |  | 2.23 |
| DRAM | Dataram Corporation | 2.920 | 2.640 | 2.860 | 6,700 | 0.170 |  | 6.32 |
| DRCO | Dynamics Research Corporation | 12.70 | 12.25 | 12.26 | 9,848 | 0.49 |  | 3.84 |
| DRIV | Digital River Inc. | 25.73 | 24.50 | 25.42 | 1,473,456 | 0.53 |  | 2.13 |
| DROOY | DRDGOLD | 6.390 | 6.140 | 6.280 | 77,285 | 0.050 |  | 0.80 |
| DRRX | Durect Corporation | 2.250 | 2.060 | 2.230 | 165,666 | 0.100 |  | 4.69 |
| DRWI | DRAGONWAVE INC | 9.020 | 8.630 | 8.940 | 355,341 | 0.160 |  | 1.82 |
| DRYS | DryShips Inc. | 6.210 | 5.990 | 6.170 | 9,789,730 | 0.030 |  | 0.49 |
| DSCM | drugstore.com inc. | 2.860 | 2.750 | 2.780 | 72,635 | 0.040 |  | 1.42 |
| DSCO | Discovery Laboratories Inc. | 0.8204 | 0.7701 | 0.8100 | 1,501,977 | 0.0200 |  | 2.53 |
| DSGX | Descartes Systems Group Inc. (The) | 5.350 | 5.210 | 5.210 | 24,347 | 0.090 |  | 1.70 |
| DSPG | DSP Group Inc. | 5.630 | 5.460 | 5.600 | 64,051 | 0.010 |  | 0.18 |
| DSTI | DayStar Technologies Inc. | 0.3700 | 0.3500 | 0.3700 | 252,320 | 0.0100 |  | 2.78 |
| DSWL | Deswell Industries Inc. | 4.380 | 4.300 | 4.300 | 3,400 | 0.000 |  | 0.00 |
| DTLK | Datalink Corporation | 4.100 | 3.910 | 4.090 | 2,100 | 0.010 |  | 0.24 |
| DTPI | Diamond Management & Technology | 6.850 | 6.510 | 6.800 | 52,467 | 0.040 |  | 0.59 |
| DTSI | DTS Inc. | 30.35 | 29.39 | 30.25 | 129,139 | 0.43 |  | 1.44 |
| DTV | The DIRECTV Group Inc. | 29.42 | 28.04 | 28.59 | 24,740,652 | 0.05 |  | 0.18 |
| DUCK | Duckwall-Alco Stores Inc. | 17.39 | 17.08 | 17.08 | 1,400 | 0.06 |  | 0.35 |
| DUSA | DUSA Pharmaceuticals Inc. | 1.380 | 1.260 | 1.350 | 100,354 | 0.170 |  | 14.41 |
| DVAX | Dynavax Technologies Corporation | 1.290 | 1.200 | 1.280 | 386,046 | 0.060 |  | 4.92 |
| DWA | DREAMWORKS ANIMATION | 33.23 | 32.76 | 33.05 | 440,661 | 0.24 |  | 0.72 |
| DWCH | Datawatch Corporation | 2.470 | 2.100 | 2.460 | 4,252 | 0.100 |  | 4.24 |
| DWMT | Merrill Lynch & Co. Inc. | 9.570 | 9.570 | 9.570 | 2,500 | 0.130 |  | 1.34 |
| DWSN | Dawson Geophysical Company | 25.60 | 24.24 | 24.79 | 100,980 | 0.92 |  | 3.58 |
| DXCM | DexCom Inc. | 7.490 | 7.170 | 7.390 | 441,640 | 0.060 |  | 0.82 |
| DXPE | DXP Enterprises Inc. | 10.83 | 10.50 | 10.69 | 58,495 | 0.27 |  | 2.46 |
| DXYN | Dixie Group Inc. (The) | 2.950 | 2.790 | 2.850 | 2,800 | 0.050 |  | 1.72 |
| DYAX | Dyax Corp. | 3.250 | 3.110 | 3.250 | 182,707 | 0.080 |  | 2.52 |
| DYII | Dynacq Healthcare Inc. | 3.490 | 3.410 | 3.410 | 4,257 | 0.060 |  | 1.79 |
| DYNT | Dynatronics Corporation | 0.6600 | 0.6100 | 0.6600 | 2,300 | 0.0200 |  | 3.13 |