| Code | Name | High | Low | Close | Volume | Change | |
|---|
| OACQ | Origo Acquisition Corp | 10.70 | 10.61 | 10.70 | 2,800 | 0.10 |  | 0.94 |   |
| OACQR | Origo Acquisition Corp | 0.4900 | 0.3600 | 0.4500 | 1,400 | -0.0300 |  | 6.25 | |
| OACQU | Origo Acquisition Corporation Unit | 11.35 | 11.35 | 11.35 | 400 | 0.30 | | 2.71 | |
| OACQW | Origo Acquisition Corp | 0.3000 | 0.2750 | 0.2900 | 9,100 | -0.0100 | | 3.33 | |
| OASM | Oasmia Pharmaceu Ads | 0.9900 | 0.9100 | 0.9100 | 6,300 | -0.0200 | | 2.15 | |
| OBAS | Optibase Ltd | 7.600 | 7.600 | 7.600 | 100 | -0.500 | | 6.17 | |
| OBCI | Ocean Bio Chem Inc | 5.210 | 4.950 | 5.200 | 24,400 | 0.150 | | 2.97 | |
| OBLN | Obalon Therapeutics Inc | 9.410 | 8.690 | 8.730 | 44,200 | -0.730 | | 7.72 | |
| OBSV | Obseva Sa Ordinary Shares | 10.49 | 9.80 | 10.49 | 23,700 | 0.64 | | 6.50 | |
| OCC | Optical Cable Corp | 2.600 | 2.500 | 2.500 | 17,800 | 0.000 |  | 0.00 | |
| OCFC | Oceanfirst Finl Corp | 27.91 | 27.56 | 27.82 | 68,800 | 0.12 | | 0.43 | |
| OCLR | Oclaro Inc | 8.610 | 8.060 | 8.410 | 5,715,600 | 0.000 | | 0.00 | |
| OCRX | Ocera Therapeutics | 1.130 | 1.050 | 1.090 | 68,600 | -0.020 | | 1.80 | |
| OCUL | Ocular Therapeut | 5.800 | 5.580 | 5.630 | 224,600 | -0.060 | | 1.05 | |
| ODFL | Old Dominion Freig | 110.8 | 108.2 | 110.6 | 413,400 | 1.0 | | 0.89 | |
| ODP | Office Depot | 3.715 | 3.635 | 3.670 | 4,943,500 | -0.030 | | 0.81 | |
| OESX | Orion Energy Syst | 0.9900 | 0.9500 | 0.9800 | 49,800 | -0.0200 | | 2.00 | |
| OFED | Oconee Fed Fin Corp | 29.74 | 29.55 | 29.72 | 800 | 0.22 | | 0.75 | |
| OFIX | Orthofix Intl Nv | 49.27 | 48.53 | 48.88 | 94,200 | -0.18 | | 0.37 | |
| OFLX | Omega Flex Inc | 65.28 | 62.43 | 64.44 | 65,400 | 0.94 | | 1.48 | |
| OFS | Ofs Capital Corporat | 13.12 | 13.06 | 13.11 | 17,600 | 0.04 | | 0.31 | |
| OHAI | Oha Investmnt Cp | 1.240 | 1.180 | 1.230 | 33,400 | 0.020 | | 1.65 | |
| OHGI | One Horizon Grp | 0.9450 | 0.9210 | 0.9380 | 47,900 | -0.0120 | | 1.26 | |
| OHRP | Ohr Pharmceutial | 0.6600 | 0.6300 | 0.6500 | 272,500 | 0.0000 | | 0.00 | |
| OIIM | O2Micro Intl Ltd | 1.840 | 1.710 | 1.750 | 29,300 | -0.100 | | 5.41 | |
| OKSB | Southwest Bncp Inc | 28.45 | 27.75 | 28.45 | 453,000 | 0.10 | | 0.35 | |
| OKTA | Okta Inc. Class A | 28.05 | 27.27 | 28.02 | 681,200 | 0.28 | | 1.01 | |
| OLBK | Old Line Bancshs MD | 29.24 | 28.81 | 29.20 | 17,000 | 0.14 | | 0.48 | |
| OLD | Long-Term Care ETF | 24.99 | 24.99 | 24.99 | 400 | 0.02 | | 0.08 | |
| OLED | Universal Display | 136.6 | 131.2 | 136.0 | 693,000 | -1.6 | | 1.16 | |
| OLLI | Ollies Bargain CS | 44.65 | 44.00 | 44.40 | 413,100 | -0.50 | | 1.11 | |
| OMAB | Grupo Aeroportuario | 42.72 | 41.27 | 42.59 | 94,200 | 1.14 | | 2.75 | |
| OMCL | Omnicell Inc | 52.55 | 51.75 | 52.15 | 165,600 | -0.40 | | 0.76 | |
| OMED | Oncomed Pharma | 3.915 | 3.740 | 3.770 | 159,300 | 0.000 | | 0.00 | |
| OMER | Omeros Corp | 19.29 | 18.59 | 19.13 | 539,400 | -0.12 | | 0.62 | |
| OMEX | Odyssey Marine Expl | 4.000 | 3.730 | 3.950 | 7,900 | 0.100 | | 2.60 | |
| OMNT | Ominto Inc | 3.500 | 3.270 | 3.420 | 36,300 | 0.150 | | 4.59 | |
| ON | On Semiconductor | 19.69 | 19.07 | 19.67 | 6,472,900 | -0.04 | | 0.20 | |
| ONB | Old National Bncp | 18.60 | 18.25 | 18.50 | 715,200 | 0.00 | | 0.00 | |
| ONCE | Spark Therap | 82.11 | 80.11 | 80.79 | 482,000 | -1.21 | | 1.48 | |
| ONCS | Oncosec Medical | 1.540 | 1.110 | 1.290 | 11,321,700 | 0.010 | | 0.78 | |
| ONEQ | Nasdaq Composite ETF | 259.7 | 257.7 | 259.5 | 29,300 | -1.0 | | 0.39 | |
| ONS | Oncobiologics Inc | 1.340 | 1.310 | 1.320 | 9,600 | -0.020 | | 1.49 | |
| ONSIW | Oncobiologics Inc | 0.1100 | 0.0900 | 0.0900 | 2,000 | -0.0200 | | 18.18 | |
| ONSIZ | Oncobiologics Inc | 0.0600 | 0.0500 | 0.0500 | 10,000 | 0.0000 | | 0.00 | |
| ONTX | Onconova Therapeutic | 2.570 | 2.400 | 2.450 | 74,200 | -0.080 | | 3.16 | |
| ONTXW | Onconova Therapeutics Inc | 0.8000 | 0.7500 | 0.8000 | 1,300 | 0.0400 | | 5.26 | |
| ONVI | Onvia Inc | 9.000 | 8.950 | 9.000 | 149,600 | 0.000 | | 0.00 | |
| ONVO | Organovo Holdings | 1.460 | 1.370 | 1.400 | 1,627,300 | -0.080 | | 5.41 | |
| OPB | Opus Bank | 24.65 | 24.10 | 24.45 | 173,000 | 0.10 | | 0.41 | |
| OPGN | Opgen Inc | 0.3750 | 0.3260 | 0.3660 | 2,939,300 | 0.0060 | | 1.67 | |
| OPGNW | Opgen Inc Warrant | 0.0400 | 0.0400 | 0.0400 | 3,000 | 0.0000 | | 0.00 | |
| OPHC | Optimumbank Hldgs | 2.070 | 2.030 | 2.030 | 1,700 | -0.050 | | 2.40 | |
| OPHT | Ophthotech Corp | 2.490 | 2.360 | 2.450 | 405,900 | -0.020 | | 0.81 | |
| OPK | Opko Health Inc | 6.760 | 6.600 | 6.750 | 3,515,400 | 0.050 | | 0.75 | |
| OPNT | Opiant Pharmaceuticals Inc. | 36.70 | 35.00 | 35.49 | 10,800 | -0.48 | | 1.33 | |
| OPOF | Old Point Finl Cp | 33.86 | 32.60 | 33.86 | 500 | 0.06 | | 0.18 | |
| OPTN | Optinose Inc. | 19.65 | 18.91 | 19.00 | 80,600 | -0.14 | | 0.73 | |
| OPTT | Ocean Power Tech Inc | 1.440 | 1.280 | 1.330 | 6,814,300 | -0.670 | | 33.50 | |
| OPXA | Opexa Therapeutics | 1.1600 | 0.9600 | 0.9700 | 307,200 | -0.1000 | | 9.35 | |
| OPXAW | Opexa Therap Warrant | 0.1000 | 0.0800 | 0.0900 | 3,171,100 | 0.0000 | | 0.00 | |
| ORBC | Orbcomm Inc | 11.30 | 11.11 | 11.21 | 302,200 | -0.10 | | 0.88 | |
| ORBK | Orbotech Ltd | 44.12 | 43.25 | 43.67 | 173,700 | -0.34 | | 0.77 | |
| OREX | Orexigen Therapeutic | 1.890 | 1.770 | 1.820 | 169,400 | -0.050 | | 2.67 | |
| ORG | Organics ETF | 31.65 | 30.91 | 31.37 | 700 | -0.15 | | 0.48 | |
| ORIG | Ocean Rig Udw Inc. | 27.42 | 25.30 | 26.09 | 93,300 | -0.96 | | 3.55 | |
| ORIT | Oritani Financial | 17.40 | 17.10 | 17.30 | 121,100 | 0.10 | | 0.58 | |
| ORLY | O'Reilly Automotive | 210.0 | 205.9 | 209.3 | 1,704,800 | -3.7 | | 1.73 | |
| ORMP | Oramed Pharma | 10.85 | 10.45 | 10.62 | 32,200 | -0.20 | | 1.85 | |
| ORPN | Bioblast Pharma Ltd | 2.430 | 2.250 | 2.250 | 14,400 | -0.110 | | 4.66 | |
| ORRF | Orrstown Finl Svcs | 25.15 | 24.60 | 24.85 | 26,400 | 0.25 | | 1.02 | |
| OSBC | Old Second Bancorp | 13.95 | 13.15 | 13.75 | 94,800 | 0.45 | | 3.38 | |
| OSBCP | Old Second Bncp | 10.46 | 10.31 | 10.46 | 6,500 | 0.00 | | 0.00 | |
| OSIS | O S I Systems Inc | 94.59 | 93.14 | 93.74 | 182,100 | -1.06 | | 1.12 | |
| OSN | Ossen Innovation Co | 1.850 | 1.730 | 1.755 | 6,600 | -0.095 | | 5.14 | |
| OSPR | Osprey Energy Acquisition Corp. Class A | 9.690 | 9.580 | 9.580 | 71,100 | -0.020 | | 0.21 | |
| OSPRU | Osprey Energy Acquisition Corp. Unit | 9.960 | 9.920 | 9.920 | 6,100 | -0.040 | | 0.40 | |
| OSPRW | Osprey Energy Acquisition Warrant | 0.9500 | 0.5600 | 0.9500 | 1,500 | 0.1000 | | 11.76 | |
| OSTK | Overstock.Com Inc | 35.05 | 32.80 | 34.90 | 1,482,800 | 1.10 | | 3.25 | |
| OSUR | Orasure Tech Inc | 20.19 | 19.39 | 19.58 | 668,600 | -0.27 | | 1.36 | |
| OTEL | Otelco Cl A | 10.25 | 10.00 | 10.02 | 7,600 | -0.13 | | 1.28 | |
| OTEX | Open Text Cp | 33.89 | 33.70 | 33.86 | 344,200 | 0.03 | | 0.09 | |
| OTIC | Otonomy Inc | 3.500 | 3.350 | 3.475 | 519,100 | 0.025 | | 0.72 | |
| OTIV | On Track Innovations | 1.380 | 1.330 | 1.350 | 76,000 | -0.010 | | 0.74 | |
| OTTR | Otter Tail Corp | 46.15 | 45.50 | 45.95 | 49,700 | 0.15 | | 0.33 | |
| OTTW | Ottawa Saving Bcp Il | 13.99 | 13.97 | 13.99 | 17,400 | 0.02 | | 0.14 | |
| OVAS | Ovascience | 1.470 | 1.380 | 1.420 | 222,500 | 0.010 | | 0.71 | |
| OVBC | Ohio Valley Banc Cp | 37.00 | 36.05 | 36.85 | 3,700 | -0.15 | | 0.41 | |
| OVID | Ovid Therapeutics Inc | 8.460 | 7.270 | 7.400 | 65,900 | -0.830 | | 10.09 | |
| OVLY | Oak Valley Bancp CA | 16.82 | 16.32 | 16.42 | 9,900 | -0.38 | | 2.26 | |
| OXBR | Oxbridge Ord Shrs | 3.750 | 3.650 | 3.700 | 9,500 | 0.000 | | 0.00 | |
| OXBRW | Oxbridge Warrants | 0.2500 | 0.2500 | 0.2500 | 3,100 | 0.0000 | | 0.00 | |
| OXFD | Oxford Immunotec | 16.16 | 15.74 | 16.03 | 47,000 | -0.18 | | 1.11 | |
| OXLC | Oxford Lane Capital | 10.84 | 10.60 | 10.79 | 114,700 | -0.05 | | 0.46 | |
| OXLCM | Oxford Lane Capital Corp Pfd Ser 2024 | 25.53 | 25.49 | 25.50 | 2,100 | -0.03 | | 0.12 | |
| OXLCO | Oxford Lane Cap 7.5 | 25.35 | 25.19 | 25.19 | 3,500 | -0.11 | | 0.43 | |
| OZRK | Bank of The Ozarks | 46.10 | 45.12 | 46.09 | 504,600 | 0.43 | | 0.94 | |