| Oasis Petroleum Inc. (OAS) NASDAQ - National Association of Securities Dealers Automated Quotations | |
| Ovintiv Inc. (OVV) NYSE - The New York Stock Exchange | |
| Option Care Health, Inc. (OPCH) NASDAQ - National Association of Securities Dealers Automated Quotations | |
| Oaktree Specialty Lending Corporation (OSLE.CL) NYSE - The New York Stock Exchange | |
| Oblong Inc. (OBLG) NYSEAMERICAN - NYSE American | |
| Otis Worldwide Corporation (OTIS$) NYSE - The New York Stock Exchange | |
| Otis Worldwide Corporation (OTIS) NYSE - The New York Stock Exchange | |
| Oric Pharmaceuticals, Inc. (ORIC) NASDAQ - National Association of Securities Dealers Automated Quotations | |
| OceanFirst Financial Corp. (OCFCP) NASDAQ - National Association of Securities Dealers Automated Quotations | |
| Orbital Energy Group, Inc. (OEG) NASDAQ - National Association of Securities Dealers Automated Quotations | |
| Open Lending Corporation (LPRO) NASDAQ - National Association of Securities Dealers Automated Quotations | |
| Office Properties Income Trust (OPINL) NASDAQ - National Association of Securities Dealers Automated Quotations | |
| Ontrak, Inc. (OTRK) NASDAQ - National Association of Securities Dealers Automated Quotations | |
| Orchid Pharma Limited (ORCHPHARMA) NSE - National Stock Exchange of India | |
| OM INFRA LIMITED (OMINFRAL) NSE - National Stock Exchange of India | |