| Code | Name | High | Low | Close | Volume | Change | |
|---|
| O | Realty Income Corp | 80.55 | 80.09 | 80.40 | 100,461 | 0.15 |  | 0.19 |   |
| OAC | Oaktree Acquisition Corp Cl A | 10.15 | 10.06 | 10.10 | 30,200 | -0.05 |  | 0.49 | |
| OAC.U | Oaktree Acquisition Corp | 10.60 | 10.58 | 10.58 | 5,200 | -0.02 | | 0.22 | |
| OAC.W | Oaktree Acquisition Corp WT | 1.500 | 1.480 | 1.480 | 500 | -0.060 | | 3.90 | |
| OAK-A | Oaktree Cap Group Llc [Oak/Pa] | 27.67 | 27.67 | 27.67 | 307 | -0.12 | | 0.43 | |
| OAK-B | Oaktree Cap Group Llc [Oak/Pb] | 27.78 | 27.62 | 27.76 | 5,200 | 0.02 | | 0.07 | |
| OBE | Obsidian Energy Ltd | 0.6966 | 0.6700 | 0.6966 | 7,426 | 0.0266 | | 3.97 | |
| OC | Owens Corning Inc | 63.78 | 63.33 | 63.56 | 84,480 | -0.26 | | 0.41 | |
| OCFT | Oneconnect Financial Technology Co. Ltd | 13.84 | 13.40 | 13.79 | 30,685 | 0.68 | | 5.19 | |
| OCN | Ocwen Financial Corp | 1.510 | 1.420 | 1.490 | 37,578 | 0.050 | | 3.47 | |
| ODC | Oil-Dri Corp of America | 35.64 | 35.64 | 35.64 | 306 | -0.26 | | 0.72 | |
| OEC | Orion Engineered Carbons S.A R | 16.27 | 15.98 | 16.10 | 7,175 | -0.04 | | 0.25 | |
| OFC | Corporate Office Properties | 30.27 | 30.11 | 30.27 | 11,792 | 0.07 | | 0.23 | |
| OFG | Oriental Financial Group | 20.60 | 20.33 | 20.60 | 17,468 | 0.01 | | 0.05 | |
| OFG-A | Ofg Bancorp [Ofg/Pa] | 26.07 | 26.07 | 26.07 | 150 | -0.03 | | 0.11 | |
| OFG-B | Ofg Bancorp [Ofg/Pb] | 26.22 | 26.00 | 26.00 | 3,100 | 0.09 | | 0.35 | |
| OFG-D | Ofg Bancorp [Ofg/Pd] | 26.57 | 26.57 | 26.57 | 200 | -0.03 | | 0.12 | |
| OGE | Oge Energy Corp | 46.21 | 46.07 | 46.20 | 40,824 | 0.08 | | 0.17 | |
| OGS | One Gas Inc | 96.64 | 96.07 | 96.29 | 4,672 | 0.08 | | 0.08 | |
| OHI | Omega Healthcare Investors | 44.58 | 44.32 | 44.52 | 100,187 | 0.20 | | 0.45 | |
| OI | Owens-Illinois | 13.56 | 13.26 | 13.27 | 22,872 | -0.23 | | 1.70 | |
| OIA | Invesco Muni Income Trust | 8.090 | 8.090 | 8.090 | 16,052 | -0.010 | | 0.12 | |
| OIB.C | Oi S.A. [Oibr.C] | 1.140 | 1.120 | 1.120 | 15,093 | 0.020 | | 1.82 | |
| OII | Oceaneering International | 13.41 | 13.21 | 13.33 | 20,693 | -0.15 | | 1.11 | |
| OIS | Oil States International | 10.82 | 10.63 | 10.67 | 10,499 | -0.18 | | 1.66 | |
| OKE | Oneok Inc | 76.62 | 76.20 | 76.46 | 70,237 | -0.52 | | 0.68 | |
| OLN | Olin Corp | 17.81 | 17.59 | 17.70 | 124,491 | -0.15 | | 0.84 | |
| OLP | One Liberty Properties | 28.07 | 28.07 | 28.07 | 604 | -0.02 | | 0.07 | |
| OMC | Omnicom Group Inc | 78.59 | 78.11 | 78.29 | 95,954 | 0.15 | | 0.19 | |
| OMF | Onemain Holdings Inc | 47.92 | 47.42 | 47.56 | 29,472 | -0.35 | | 0.73 | |
| OMI | Owens & Minor | 6.680 | 6.570 | 6.630 | 68,340 | -0.060 | | 0.90 | |
| OMN | Omnova Solutions Inc | 10.14 | 10.13 | 10.14 | 3,184 | 0.01 | | 0.10 | |
| ONDK | On Deck Capital Inc | 4.070 | 3.990 | 4.030 | 33,513 | -0.020 | | 0.49 | |
| ONE | Onesmart International Education Group | 5.600 | 5.480 | 5.500 | 10,420 | -0.040 | | 0.72 | |
| ONTO | Onto Innovation Inc. | 39.39 | 38.75 | 38.97 | 10,630 | -0.66 | | 1.67 | |
| OOMA | Ooma Inc | 13.60 | 13.60 | 13.60 | 330 | -0.07 | | 0.51 | |
| OPP | Rivernorth/Doubleline Strategic | 16.95 | 16.94 | 16.95 | 3,936 | 0.00 |  | 0.00 | |
| OPY | Oppenheimer Holdings | 27.00 | 26.80 | 27.00 | 1,070 | 0.10 | | 0.37 | |
| OR | Osisko Gold Royalties Ltd | 10.43 | 10.28 | 10.34 | 90,426 | 0.03 | | 0.29 | |
| ORA | Ormat Technologies | 85.93 | 85.34 | 85.85 | 13,595 | 0.07 | | 0.08 | |
| ORAN | Orange ADR | 14.44 | 14.39 | 14.40 | 71,674 | -0.07 | | 0.48 | |
| ORC | Orchid Island Capital Inc | 6.340 | 6.280 | 6.330 | 115,004 | 0.060 | | 0.96 | |
| ORCC | Owl Rock Capital Corp | 15.94 | 15.87 | 15.90 | 41,933 | 0.00 | | 0.00 | |
| ORCL | Oracle Corp | 55.76 | 55.35 | 55.66 | 826,522 | 0.19 | | 0.34 | |
| ORI | Old Republic International Corp | 23.53 | 23.40 | 23.50 | 30,410 | 0.01 | | 0.04 | |
| ORN | Orion Group Holdings Inc | 4.680 | 4.630 | 4.680 | 5,191 | -0.040 | | 0.85 | |
| OSB | Norbord Inc | 33.30 | 32.50 | 33.08 | 29,443 | -0.47 | | 1.40 | |
| OSG | Overseas Shipholding Group Inc | 2.110 | 2.050 | 2.090 | 7,492 | -0.030 | | 1.42 | |
| OSK | Oshkosh Truck Corp | 84.68 | 83.73 | 84.68 | 82,921 | 0.55 | | 0.65 | |
| OSLE | Oaktree Specialty Lending Corp | 25.08 | 25.08 | 25.08 | 800 | -0.07 | | 0.28 | |
| OUT | Outfront Media Inc | 30.87 | 30.74 | 30.79 | 30,745 | -0.05 | | 0.16 | |
| OVV | Ovintiv Inc. | 15.64 | 15.50 | 15.51 | 171,483 | -0.38 | | 2.39 | |
| OXM | Oxford Industries | 69.05 | 68.73 | 68.90 | 1,242 | -0.41 | | 0.59 | |
| OXY | Occidental Petroleum Corp | 41.69 | 41.28 | 41.45 | 988,917 | -0.15 | | 0.36 | |