| Code | Name | High | Low | Close | Volume | Change | |
|---|
| QABA | Qtec First Trust ETF | 55.17 | 54.91 | 54.95 | 56,100 | -0.20 |  | 0.36 |   |
| QADA | Qad Inc | 58.80 | 57.10 | 58.50 | 73,800 | 0.85 |  | 1.47 | |
| QADB | Q A D Inc Cl B | 43.88 | 42.98 | 43.79 | 2,900 | 0.34 | | 0.78 | |
| QAT | Qatar Ishares MSCI ETF | 17.63 | 17.41 | 17.42 | 17,900 | 0.00 |  | 0.00 | |
| QBAK | Qualstar Corp | 8.130 | 7.980 | 8.070 | 6,000 | 0.040 | | 0.50 | |
| QCLN | Nasdaq Clean Edge Green Energy Index | 20.26 | 20.12 | 20.12 | 20,300 | -0.02 | | 0.07 | |
| QCOM | Qualcomm Inc | 76.50 | 73.51 | 74.72 | 11,691,000 | 1.48 | | 2.02 | |
| QCRH | Qcr Holdings Inc | 42.70 | 42.30 | 42.40 | 23,100 | -0.10 | | 0.24 | |
| QDEL | Quidel Cp | 72.77 | 71.59 | 72.36 | 152,400 | 0.78 | | 1.09 | |
| QINC | Rba Quality Income ETF FT | 25.67 | 25.67 | 25.67 | 500 | 0.06 | | 0.23 | |
| QIWI | Qiwi Plc ADR | 13.07 | 12.62 | 12.63 | 284,200 | -0.22 | | 1.71 | |
| QLC | Flexshares US Quality Largecap | 35.91 | 35.78 | 35.87 | 7,100 | 0.23 | | 0.65 | |
| QLYS | Qualys Inc | 91.30 | 89.80 | 90.95 | 238,600 | 0.55 | | 0.61 | |
| QNST | Quinstreet Inc | 13.95 | 13.49 | 13.58 | 459,600 | -0.03 | | 0.22 | |
| QQEW | Nasdaq-100 EW Index Fund FT | 63.28 | 62.76 | 63.11 | 6,800 | 0.47 | | 0.75 | |
| QQQ | Nasdaq QQQ ETF | 183.7 | 181.4 | 182.8 | 31,868,300 | 1.5 | | 0.83 | |
| QQQC | G-X Nasdaq China Tech ETF | 25.84 | 25.51 | 25.79 | 1,900 | 0.43 | | 1.70 | |
| QQQX | Nuveen Nasdaq 100 | 24.26 | 24.02 | 24.18 | 200,000 | 0.14 | | 0.58 | |
| QQXT | Nasdaq-100 Ex-Tech Sector Indexsm Fund | 52.84 | 52.84 | 52.84 | 2,300 | 0.26 | | 0.49 | |
| QRHC | Quest Resource | 2.400 | 2.350 | 2.390 | 25,500 | 0.010 | | 0.42 | |
| QRTEA | Qurate Retail Group | 22.15 | 21.71 | 22.10 | 4,355,100 | 0.18 | | 0.82 | |
| QRTEB | Liberty Int Qvc Sr B | 22.50 | 21.92 | 21.92 | 2,200 | -0.17 | | 0.77 | |
| QRVO | Qorvo Inc | 75.53 | 74.10 | 75.04 | 997,500 | 1.07 | | 1.45 | |
| QSII | Quality Systems Inc | 22.37 | 21.83 | 22.35 | 297,800 | 0.16 | | 0.72 | |
| QTEC | Nasdaq-100 Technology Index Fund FT | 78.94 | 77.98 | 78.53 | 107,300 | 0.65 | | 0.83 | |
| QTNA | Quantenna Communications Inc | 18.80 | 18.21 | 18.70 | 450,300 | 0.43 | | 2.35 | |
| QTNT | Quotient Limited Ord | 7.070 | 6.720 | 6.770 | 364,200 | -0.220 | | 3.15 | |
| QTRH | Quarterhill Inc | 1.510 | 1.480 | 1.500 | 156,900 | 0.000 | | 0.00 | |
| QTRX | Quanterix Corporation | 19.31 | 16.92 | 18.57 | 404,600 | 2.04 | | 12.34 | |
| QTT | Qutoutiao Inc. ADR | 10.800 | 9.010 | 9.260 | 8,091,800 | -0.150 | | 1.59 | |
| QUIK | Quicklogic Corp | 1.030 | 1.000 | 1.030 | 162,700 | 0.020 | | 1.98 | |
| QUMU | Qumu Corp | 2.590 | 2.510 | 2.530 | 6,500 | 0.030 | | 1.20 | |
| QURE | Uniqure N.V. | 40.22 | 38.37 | 39.90 | 181,600 | 1.40 | | 3.64 | |
| QYLD | Recon Nq-100 Covered Call ETF | 25.26 | 25.19 | 25.25 | 116,300 | 0.04 | | 0.16 | |