| Code | Name | High | Low | Close | Volume | Change | |
|---|
| OASM | Oasmia Pharmaceu Ads | 1.460 | 1.430 | 1.430 | 2,900 | -0.010 |  | 0.69 |   |
| OBAS | Optibase Ltd | 9.350 | 9.050 | 9.225 | 3,000 | 0.175 |  | 1.93 | |
| OBCI | Ocean Bio Chem Inc | 3.810 | 3.490 | 3.550 | 20,100 | -0.330 | | 8.51 | |
| OBLN | Obalon Therapeutics Inc | 2.950 | 2.360 | 2.430 | 1,004,100 | -0.520 | | 17.63 | |
| OBNK | Origin Bancorp Inc. | 41.38 | 39.56 | 41.38 | 2,217,700 | 1.43 | | 3.58 | |
| OBSV | Obseva Sa Ordinary Shares | 15.00 | 13.76 | 14.71 | 75,300 | -0.22 | | 1.47 | |
| OCC | Optical Cable Corp | 4.000 | 3.750 | 3.805 | 99,500 | 0.065 | | 1.74 | |
| OCFC | Oceanfirst Finl Corp | 30.81 | 30.39 | 30.71 | 1,388,700 | 0.10 | | 0.33 | |
| OCLR | Oclaro Inc | 8.760 | 8.580 | 8.710 | 5,884,200 | -0.020 | | 0.23 | |
| OCSI | Oaktree Strategic Income Corp | 8.250 | 8.155 | 8.180 | 31,800 | -0.050 | | 0.61 | |
| OCSL | Oaktree Specialty Lending Corp | 4.725 | 4.660 | 4.660 | 422,400 | -0.030 | | 0.64 | |
| OCSLL | Oaktree Specialty Lending Corp 6.125 Sn | 24.52 | 24.38 | 24.51 | 4,100 | 0.04 | | 0.16 | |
| OCUL | Ocular Therapeut | 7.790 | 7.450 | 7.775 | 869,500 | 0.045 | | 0.58 | |
| ODFL | Old Dominion Freig | 162.5 | 157.7 | 157.8 | 1,183,900 | -3.0 | | 1.87 | |
| ODP | Office Depot | 2.970 | 2.840 | 2.900 | 12,973,400 | 0.010 | | 0.35 | |
| ODT | Odonate Therapeutics Inc | 25.34 | 23.18 | 24.98 | 171,500 | 0.16 | | 0.64 | |
| OESX | Orion Energy Syst | 1.145 | 1.050 | 1.050 | 224,600 | -0.070 | | 6.25 | |
| OFED | Oconee Fed Fin Corp | 29.30 | 28.88 | 29.30 | 22,100 | 0.15 | | 0.51 | |
| OFIX | Orthofix Intl Nv | 60.24 | 58.98 | 60.13 | 587,200 | 0.25 | | 0.42 | |
| OFLX | Omega Flex Inc | 72.26 | 70.99 | 71.99 | 47,400 | 1.28 | | 1.81 | |
| OFS | Ofs Capital Corporat | 12.04 | 11.40 | 11.56 | 99,100 | -0.45 | | 3.75 | |
| OFSSL | Ofs Capital Corporation 6.375% Notes Due | 24.85 | 24.75 | 24.85 | 1,900 | 0.06 | | 0.22 | |
| OHAI | Oha Investmnt Cp | 1.550 | 1.500 | 1.510 | 42,800 | 0.010 | | 0.67 | |
| OHGI | One Horizon Grp | 0.5400 | 0.5100 | 0.5200 | 216,200 | -0.0100 | | 1.89 | |
| OHRP | Ohr Pharmceutial | 0.2300 | 0.2100 | 0.2200 | 225,100 | 0.0000 |  | 0.00 | |
| OIIM | O2Micro Intl Ltd | 1.780 | 1.740 | 1.745 | 39,900 | 0.015 | | 0.87 | |
| OKDCC | Eaton Vance Nextshares Trust II Eaton | 100.1 | 100.1 | 100.1 | 10,600 | 0.0 | | 0.00 | |
| OKTA | Okta Inc Class A | 53.22 | 50.22 | 51.89 | 7,858,100 | -1.33 | | 2.50 | |
| OLBK | Old Line Bancshs MD | 34.80 | 34.08 | 34.55 | 600,900 | -0.04 | | 0.12 | |
| OLD | Long-Term Care ETF | 25.29 | 25.28 | 25.29 | 1,100 | 0.10 | | 0.40 | |
| OLED | Universal Display | 87.50 | 83.70 | 86.45 | 1,431,700 | -0.30 | | 0.35 | |
| OLLI | Ollies Bargain CS | 75.35 | 72.85 | 73.80 | 1,460,100 | -3.10 | | 4.03 | |
| OMAB | Grupo Aeroportuario | 40.10 | 39.68 | 39.98 | 79,000 | 0.23 | | 0.58 | |
| OMCL | Omnicell Inc | 52.55 | 49.45 | 52.45 | 550,500 | 0.40 | | 0.77 | |
| OMED | Oncomed Pharma | 2.600 | 2.480 | 2.550 | 51,400 | -0.040 | | 1.54 | |
| OMER | Omeros Corp | 19.06 | 18.26 | 18.67 | 957,200 | 0.22 | | 1.19 | |
| OMEX | Odyssey Marine Expl | 9.050 | 8.410 | 8.680 | 54,900 | -0.270 | | 3.02 | |
| OMNT | Ominto Inc | 1.1300 | 0.4800 | 0.4800 | 1,331,400 | -0.5500 | | 53.40 | |
| ON | On Semiconductor | 24.98 | 24.04 | 24.08 | 7,446,900 | -0.61 | | 2.47 | |
| ONB | Old National Bncp | 19.10 | 18.70 | 18.95 | 3,292,900 | 0.00 | | 0.00 | |
| ONCE | Spark Therap | 90.20 | 87.56 | 90.08 | 1,258,900 | 1.59 | | 1.80 | |
| ONCS | Oncosec Medical | 1.440 | 1.380 | 1.440 | 323,300 | 0.060 | | 4.35 | |
| ONCY | Oncolytics Biotech Inc | 6.100 | 5.810 | 5.850 | 22,100 | 0.010 | | 0.17 | |
| ONEQ | Nasdaq Composite ETF | 303.7 | 301.1 | 301.6 | 22,200 | -0.9 | | 0.29 | |
| ONS | Oncobiologics Inc | 0.8650 | 0.8250 | 0.8250 | 117,300 | -0.0050 | | 0.60 | |
| ONSIW | Oncobiologics Inc | 0.0100 | 0.0100 | 0.0100 | 900 | 0.0000 | | 0.00 | |
| ONTX | Onconova Therapeutic | 0.5200 | 0.4600 | 0.4800 | 2,032,300 | -0.0200 | | 4.00 | |
| ONTXW | Onconova Therapeutics Inc | 0.1400 | 0.1400 | 0.1400 | 2,200 | 0.0030 | | 2.19 | |
| ONVO | Organovo Holdings | 1.550 | 1.410 | 1.490 | 1,683,500 | 0.050 | | 3.47 | |
| OPB | Opus Bank | 29.80 | 28.95 | 29.10 | 330,800 | -0.45 | | 1.52 | |
| OPBK | Open Bank | 12.99 | 12.49 | 12.99 | 1,454,800 | 0.28 | | 2.20 | |
| OPES | Opes Acquisition Corp. | 9.700 | 9.700 | 9.700 | 60,000 | 0.000 | | 0.00 | |
| OPESU | Opes Acquisition Corp. Unit | 10.03 | 10.03 | 10.03 | 7,100 | -0.01 | | 0.05 | |
| OPESW | Opes Acquisition Corp. Wtarrant | 0.3900 | 0.3700 | 0.3900 | 20,000 | -0.0400 | | 9.30 | |
| OPGN | Opgen Inc | 2.070 | 1.970 | 1.970 | 114,500 | -0.080 | | 3.90 | |
| OPGNW | Opgen Inc Warrant | 0.4500 | 0.4500 | 0.4500 | 100 | 0.0000 | | 0.00 | |
| OPHC | Optimumbank Hldgs | 5.670 | 4.700 | 5.000 | 76,000 | 0.240 | | 5.04 | |
| OPHT | Ophthotech Corp | 2.760 | 2.600 | 2.660 | 1,255,600 | -0.050 | | 1.85 | |
| OPK | Opko Health Inc | 4.625 | 4.365 | 4.570 | 36,829,800 | 0.110 | | 2.47 | |
| OPNT | Opiant Pharmaceuticals Inc | 14.86 | 13.98 | 14.86 | 23,300 | 0.22 | | 1.50 | |
| OPOF | Old Point Finl Cp | 29.50 | 28.40 | 28.91 | 381,500 | -0.46 | | 1.57 | |
| OPTN | Optinose Inc | 27.29 | 24.66 | 26.67 | 1,973,600 | 1.66 | | 6.64 | |
| OPTT | Ocean Power Tech Inc | 1.109 | 1.020 | 1.065 | 1,151,400 | -0.025 | | 2.29 | |
| ORBC | Orbcomm Inc | 10.24 | 10.04 | 10.19 | 1,244,700 | 0.10 | | 0.99 | |
| ORBK | Orbotech Ltd | 63.14 | 61.95 | 62.57 | 243,000 | -0.54 | | 0.86 | |
| ORG | Organics ETF | 33.28 | 33.28 | 33.28 | 100 | -0.12 | | 0.36 | |
| ORGS | Orgenesis Inc | 9.150 | 8.780 | 9.110 | 35,700 | 0.000 | | 0.00 | |
| ORIG | Ocean Rig Udw Inc | 28.44 | 26.84 | 28.19 | 7,318,200 | 1.32 | | 4.91 | |
| ORIT | Oritani Financial | 17.20 | 16.80 | 17.00 | 430,000 | 0.05 | | 0.29 | |
| ORLY | O'Reilly Automotive | 290.4 | 285.6 | 286.2 | 925,900 | -0.9 | | 0.32 | |
| ORMP | Oramed Pharma | 7.680 | 7.350 | 7.670 | 43,500 | 0.100 | | 1.32 | |
| ORPN | Bioblast Pharma Ltd | 1.820 | 1.680 | 1.810 | 46,700 | 0.090 | | 5.23 | |
| ORRF | Orrstown Finl Svcs | 27.05 | 26.40 | 26.50 | 55,200 | -0.40 | | 1.49 | |
| OSBC | Old Second Bancorp | 15.50 | 15.05 | 15.20 | 199,600 | -0.20 | | 1.30 | |
| OSBCP | Old Second Bncp | 10.52 | 10.52 | 10.52 | 400 | 0.02 | | 0.19 | |
| OSIS | O S I Systems Inc | 79.00 | 77.12 | 77.22 | 616,900 | -1.71 | | 2.17 | |
| OSN | Ossen Innovation Co | 3.000 | 2.640 | 2.660 | 80,200 | -0.140 | | 5.00 | |
| OSPN | Onespan Inc. | 20.80 | 20.15 | 20.45 | 893,900 | -0.20 | | 0.97 | |
| OSPR | Osprey Energy Acquisition Corp Class A | 10.20 | 10.16 | 10.16 | 133,800 | 0.00 | | 0.00 | |
| OSPRU | Osprey Energy Acquisition Corp Unit | 11.20 | 11.05 | 11.05 | 4,400 | 0.05 | | 0.45 | |
| OSPRW | Osprey Energy Acquisition Warrant | 1.670 | 1.670 | 1.670 | 73,800 | -0.020 | | 1.18 | |
| OSS | One Stop Systems Inc. | 4.450 | 4.300 | 4.440 | 11,000 | 0.010 | | 0.23 | |
| OSTK | Overstock.Com Inc | 36.55 | 33.20 | 33.45 | 2,309,200 | -2.70 | | 7.47 | |
| OSUR | Orasure Tech Inc | 17.46 | 16.92 | 17.28 | 1,043,200 | 0.14 | | 0.82 | |
| OTEL | Otelco Cl A | 15.10 | 15.10 | 15.10 | 5,700 | 0.10 | | 0.67 | |
| OTEX | Open Text Cp | 35.96 | 35.30 | 35.78 | 395,200 | 0.06 | | 0.17 | |
| OTIC | Otonomy Inc | 4.300 | 4.050 | 4.200 | 3,430,500 | 0.150 | | 3.70 | |
| OTIV | On Track Innovations | 1.140 | 1.100 | 1.110 | 104,300 | -0.030 | | 2.63 | |
| OTTR | Otter Tail Corp | 48.65 | 47.85 | 48.35 | 232,500 | 0.35 | | 0.73 | |
| OTTW | Ottawa Saving Bcp Il | 13.89 | 13.70 | 13.89 | 7,300 | 0.22 | | 1.61 | |
| OVAS | Ovascience | 0.9900 | 0.9300 | 0.9300 | 240,900 | -0.0500 | | 5.10 | |
| OVBC | Ohio Valley Banc Cp | 56.15 | 50.95 | 55.70 | 52,500 | 3.90 | | 7.53 | |
| OVID | Ovid Therapeutics Inc | 8.520 | 8.040 | 8.460 | 246,100 | 0.310 | | 3.80 | |
| OVLY | Oak Valley Bancp CA | 23.40 | 21.39 | 23.30 | 734,500 | 1.48 | | 6.78 | |
| OXBR | Oxbridge Ord Shrs | 1.900 | 1.800 | 1.900 | 2,900 | 0.000 | | 0.00 | |
| OXBRW | Oxbridge Warrants | 0.0500 | 0.0500 | 0.0500 | 5,200 | 0.0000 | | 0.00 | |
| OXFD | Oxford Immunotec | 14.26 | 13.68 | 13.87 | 434,800 | -0.21 | | 1.49 | |
| OXLC | Oxford Lane Capital | 10.43 | 10.36 | 10.36 | 140,500 | -0.03 | | 0.29 | |
| OXLCM | Oxford Lane Capital Corp Pfd Ser 2024 | 25.42 | 25.40 | 25.42 | 500 | 0.02 | | 0.08 | |
| OXLCO | Oxford Lane Cap 7.5 | 25.43 | 25.29 | 25.34 | 600 | -0.01 | | 0.02 | |
| OXSQ | Oxford Square Capital Corp. | 6.970 | 6.760 | 6.830 | 246,200 | -0.080 | | 1.16 | |
| OXSQL | Oxford Square Capital Corp. 6.50% Note | 25.64 | 25.42 | 25.64 | 1,300 | 0.07 | | 0.27 | |
| OZRK | Bank of The Ozarks | 48.00 | 47.00 | 47.05 | 1,540,700 | -0.45 | | 0.95 | |