| Code | Name | High | Low | Close | Volume | Change |
|---|
| QABA | FIRST TRUST EXCHANGE-TRADED FUN | 20.88 | 20.84 | 20.84 | 500 | 0.05 |  | 0.24 |
| QADI | QAD Inc. | 4.880 | 4.510 | 4.600 | 11,876 | 0.170 |  | 3.56 |
| QBAK | Qualstar Corporation | 1.880 | 1.840 | 1.840 | 2,943 | 0.080 | | 4.17 |
| QCCO | QC Holdings Inc. | 6.300 | 5.450 | 5.610 | 42,615 | 0.560 | | 9.08 |
| QCLN | First Trust NASDAQ Clean Edge U.S. | 14.08 | 13.74 | 13.91 | 12,344 | 0.13 | | 0.93 |
| QCOM | QUALCOMM Incorporated | 43.97 | 43.40 | 43.90 | 15,993,381 | 0.05 | | 0.11 |
| QCOR | Questcor Pharmaceuticals Inc. | 4.140 | 3.910 | 3.940 | 776,525 | 0.170 | | 4.14 |
| QCRH | QCR Holdings Inc. | 9.920 | 9.800 | 9.920 | 3,233 | 0.020 | | 0.20 |
| QDEL | Quidel Corporation | 15.17 | 14.65 | 14.87 | 126,581 | 0.06 | | 0.40 |
| QDHC | QuadraMed Corporation | 7.210 | 6.350 | 6.680 | 29,300 | 0.560 | | 7.73 |
| QELP | Quest Energy Partners L.P. | 2.420 | 2.340 | 2.340 | 30,340 | 0.080 | | 3.31 |
| QGEN | Qiagen N.V. | 21.75 | 21.26 | 21.75 | 742,069 | 0.13 | | 0.60 |
| QGLY | Quigley Corporation (The) | 2.120 | 2.050 | 2.050 | 1,500 | 0.050 | | 2.38 |
| QKLS | QKL STORES INC | 6.950 | 6.510 | 6.700 | 30,800 | 0.020 | | 0.30 |
| QLGC | QLogic Corporation | 18.58 | 18.20 | 18.30 | 918,452 | 0.20 | | 1.08 |
| QLTI | QLT Inc. | 3.690 | 3.500 | 3.620 | 192,899 | 0.060 | | 1.69 |
| QLTY | Quality Distribution Inc. | 4.010 | 3.740 | 3.850 | 19,370 | 0.050 | | 1.28 |
| QQEW | First Trust NASDAQ-100 Equal Weighted | 18.39 | 18.20 | 18.36 | 6,788 | 0.09 | | 0.49 |
| QQQQ | PowerShares QQQ Trust Series 1 | 42.65 | 42.08 | 42.60 | 96,283,787 | 0.25 | | 0.59 |
| QQQX | NASDAQ Premium Income and Growth Fund | 14.52 | 14.34 | 14.43 | 50,235 | 0.12 | | 0.82 |
| QQXT | First Trust NASDAQ-100 Ex-Technology | 16.79 | 16.62 | 16.79 | 5,082 | 0.14 | | 0.84 |
| QRCP | Quest Resource Corporation | 0.5300 | 0.4900 | 0.4900 | 279,002 | 0.0300 | | 5.77 |
| QSFT | Quest Software Inc. | 17.43 | 16.79 | 17.24 | 1,261,738 | 0.24 | | 1.37 |
| QSII | Quality Systems Inc. | 62.70 | 60.87 | 61.94 | 113,404 | 0.05 | | 0.08 |
| QTEC | First Trust NASDAQ-100-Technology Sector | 19.19 | 19.00 | 19.17 | 69,543 | 0.07 | | 0.37 |
| QTWW | Quantum Fuel Systems Technologies | 1.140 | 1.090 | 1.130 | 1,252,695 | 0.010 | | 0.88 |
| QUIK | QuickLogic Corporation | 2.060 | 1.950 | 1.950 | 130,133 | 0.110 | | 5.34 |
| QUIX | Quixote Corporation | 2.070 | 1.100 | 1.100 | 44,526 | 0.030 | | 1.52 |
| QUOT | Quotesmith.com, Inc. | 2.550 | 2.550 | 2.550 | 200 | 0.100 | | 3.77 |