| ORSTED A/S (DOGEF) OTCMKTS - OTC Markets | |
| ORTOMA AB (ORRTF) OTCMKTS - OTC Markets | |
| OSE IMMUNOTHERAPEU (ORPHF) OTCMKTS - OTC Markets | |
| OSPREY GOLD DEVELO (OSSPF) OTCMKTS - OTC Markets | |
| OUTSOURCING INC (OUSZF) OTCMKTS - OTC Markets | |
| OYO CORP (OYOCF) OTCMKTS - OTC Markets | |
| Oakridge Holdings Inc (OKRGQ) OTCMKTS - OTC Markets | |
| Oaktree Specialty Lending Corp (OCSL) NASDAQ - National Association of Securities Dealers Automated Quotations | |
| Oaktree Strategic Income Corporation (OCSI) NASDAQ - National Association of Securities Dealers Automated Quotations | |
| Obseva SA (OBSV) NASDAQ - National Association of Securities Dealers Automated Quotations | |
| Obsidian Energy Ltd (OBE) NYSE - The New York Stock Exchange | |
| Ocean Energy Inc (NV) (ASCW) OTCMKTS - OTC Markets | |
| Ocean Thermal Energy Corp (CPWR) OTCMKTS - OTC Markets | |
| Omni Global Technologies Inc (OMGT) OTCMKTS - OTC Markets | |
| Omni Health Inc (OMHE) OTCMKTS - OTC Markets | |