| Code | Name | High | Low | Close | Volume | Change | |
|---|
| O | Realty Income Corp | 76.52 | 75.90 | 76.04 | 1,292,508 | 0.15 |  | 0.20 |   |
| OAC | Oaktree Acquisition Corp Cl A | 9.950 | 9.950 | 9.950 | 600 | 0.150 | | 1.53 | |
| OAC.U | Oaktree Acquisition Corp | 10.15 | 10.15 | 10.15 | 13,788 | 0.02 | | 0.20 | |
| OAC.W | Oaktree Acquisition Corp WT | 0.8498 | 0.8498 | 0.8498 | 200 | 0.0000 |  | 0.00 | |
| OAK | Oaktree Capital Group Llc | 53.69 | 53.18 | 53.18 | 1,808,641 | -0.42 |  | 0.78 | |
| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 26.85 | 26.64 | 26.85 | 5,215 | 0.15 | | 0.56 | |
| OAK-B | Oaktree Cap Group Llc [Oak/Pb] | 26.86 | 26.64 | 26.82 | 10,754 | 0.03 | | 0.11 | |
| OAS | Oasis Petroleum Inc | 4.000 | 3.800 | 3.860 | 13,713,128 | -0.100 | | 2.53 | |
| OBE | Obsidian Energy Ltd | 0.9600 | 0.9500 | 0.9500 | 48,149 | 0.0000 | | 0.00 | |
| OC | Owens Corning Inc | 60.91 | 59.95 | 60.56 | 2,062,934 | -0.44 | | 0.72 | |
| OCN | Ocwen Financial Corp | 2.010 | 1.970 | 1.990 | 447,573 | -0.020 | | 1.00 | |
| ODC | Oil-Dri Corp of America | 34.44 | 34.44 | 34.44 | 1,682 | -0.37 | | 1.06 | |
| OEC | Orion Engineered Carbons S.A R | 16.73 | 16.18 | 16.61 | 242,823 | 0.02 | | 0.12 | |
| OFC | Corporate Office Properties | 29.32 | 28.97 | 29.14 | 460,715 | 0.11 | | 0.38 | |
| OFG | Oriental Financial Group | 22.49 | 22.00 | 22.31 | 288,903 | -0.14 | | 0.62 | |
| OFG-A | Ofg Bancorp [Ofg/Pa] | 26.89 | 26.42 | 26.85 | 3,710 | 0.11 | | 0.41 | |
| OFG-B | Ofg Bancorp [Ofg/Pb] | 26.52 | 26.17 | 26.36 | 2,135 | 0.06 | | 0.23 | |
| OFG-D | Ofg Bancorp [Ofg/Pd] | 27.20 | 26.93 | 27.10 | 1,333 | -0.14 | | 0.51 | |
| OGE | Oge Energy Corp | 45.20 | 44.90 | 44.91 | 620,318 | -0.05 | | 0.11 | |
| OGS | One Gas Inc | 94.77 | 93.92 | 94.44 | 297,965 | 0.28 | | 0.30 | |
| OHI | Omega Healthcare Investors | 41.51 | 40.91 | 41.27 | 1,779,086 | 0.32 | | 0.78 | |
| OI | Owens-Illinois | 10.25 | 9.60 | 10.09 | 1,983,630 | 0.17 | | 1.71 | |
| OIA | Invesco Muni Income Trust | 7.900 | 7.740 | 7.800 | 69,865 | -0.050 | | 0.64 | |
| OIB.C | Oi S.A. [Oibr.C] | 1.240 | 1.130 | 1.170 | 842,743 | 0.030 | | 2.63 | |
| OII | Oceaneering International | 14.31 | 13.64 | 14.21 | 1,136,891 | 0.42 | | 3.05 | |
| OIS | Oil States International | 14.27 | 13.73 | 14.06 | 535,600 | 0.04 | | 0.29 | |
| OKE | Oneok Inc | 75.89 | 74.77 | 74.81 | 2,221,309 | -0.96 | | 1.27 | |
| OLN | Olin Corp | 19.10 | 18.10 | 18.94 | 2,236,295 | 0.31 | | 1.66 | |
| OLP | One Liberty Properties | 28.77 | 28.40 | 28.58 | 35,833 | 0.01 | | 0.04 | |
| OMC | Omnicom Group Inc | 78.08 | 77.53 | 77.73 | 1,541,422 | -0.14 | | 0.18 | |
| OMF | Onemain Holdings Inc | 38.45 | 37.00 | 38.23 | 514,697 | 0.71 | | 1.89 | |
| OMI | Owens & Minor | 5.830 | 5.240 | 5.450 | 1,872,612 | -0.160 | | 2.85 | |
| OMN | Omnova Solutions Inc | 10.08 | 10.07 | 10.07 | 241,790 | -0.01 | | 0.10 | |
| OMP | Oasis Midstream Partners LP | 17.73 | 16.97 | 17.58 | 295,566 | 0.94 | | 5.65 | |
| ONDK | On Deck Capital Inc | 3.460 | 3.280 | 3.440 | 427,907 | 0.130 | | 3.93 | |
| ONE | Onesmart International Education Group | 7.480 | 7.280 | 7.300 | 91,284 | -0.160 | | 2.14 | |
| OOMA | Ooma Inc | 10.70 | 10.31 | 10.52 | 109,937 | -0.11 | | 1.03 | |
| OPP | Rivernorth/Doubleline Strategic | 17.71 | 17.60 | 17.66 | 49,822 | 0.03 | | 0.17 | |
| OPY | Oppenheimer Holdings | 31.39 | 30.97 | 31.01 | 28,796 | -0.19 | | 0.61 | |
| OR | Osisko Gold Royalties Ltd | 12.35 | 10.99 | 11.04 | 2,973,987 | -1.21 | | 9.88 | |
| ORA | Ormat Technologies | 74.50 | 73.46 | 74.01 | 159,554 | 0.80 | | 1.09 | |
| ORAN | Orange ADR | 15.69 | 15.58 | 15.65 | 328,302 | 0.07 | | 0.45 | |
| ORC | Orchid Island Capital Inc | 5.840 | 5.740 | 5.830 | 761,029 | 0.050 | | 0.87 | |
| ORCC | Owl Rock Capital Corp | 17.26 | 16.13 | 16.13 | 284,334 | -0.76 | | 4.50 | |
| ORCL | Oracle Corp | 54.17 | 53.06 | 54.02 | 13,838,470 | 0.55 | | 1.03 | |
| ORI | Old Republic International Corp | 23.19 | 22.80 | 23.11 | 1,077,983 | 0.14 | | 0.61 | |
| ORN | Orion Group Holdings Inc | 4.400 | 4.160 | 4.260 | 243,303 | -0.180 | | 4.05 | |
| OSB | Norbord Inc | 23.82 | 23.37 | 23.76 | 78,538 | -0.07 | | 0.29 | |
| OSG | Overseas Shipholding Group Inc | 1.840 | 1.780 | 1.830 | 360,529 | 0.020 | | 1.10 | |
| OSK | Oshkosh Truck Corp | 76.04 | 74.34 | 75.45 | 350,927 | 0.25 | | 0.33 | |
| OSLE | Oaktree Specialty Lending Corp | 25.82 | 25.56 | 25.58 | 3,433 | -0.10 | | 0.39 | |
| OUT | Outfront Media Inc | 28.05 | 27.27 | 27.61 | 1,111,223 | -0.42 | | 1.50 | |
| OXM | Oxford Industries | 70.61 | 69.47 | 70.42 | 148,789 | 0.05 | | 0.07 | |
| OXY | Occidental Petroleum Corp | 45.91 | 44.97 | 45.50 | 7,278,385 | -0.20 | | 0.44 | |
| OZM | Och-Ziff Capital Management | 20.69 | 20.22 | 20.47 | 80,000 | 0.23 | | 1.14 | |