| Onward Technologies Limited (ONWARDTEC) BSE - Bombay Stock Exchange | |
| Orient Green Power Company Ltd (GREENPOWER) NSE - National Stock Exchange of India | |
| Olin Corporation (OLN) NYSE - The New York Stock Exchange | |
| Orient Cement Ltd (ORIENTCEM) NSE - National Stock Exchange of India | |
| Organigram Holdings Inc (OGI) CVE - Toronto TSX Ventures Exchange | |
| ON Semiconductor Corp (ON) NASDAQ - National Association of Securities Dealers Automated Quotations | |
| Okta Inc (OKTA) NASDAQ - National Association of Securities Dealers Automated Quotations | |
| Omkar Speciality Chemicals Ltd (OMKARCHEM) BSE - Bombay Stock Exchange | |
| Orbit Exports Limited. (ORBTEXP) BSE - Bombay Stock Exchange | |
| Omnicell, Inc. (OMCL) NASDAQ - National Association of Securities Dealers Automated Quotations | |
| Oramed Pharmaceuticals, Inc. (ORMP) NASDAQ - National Association of Securities Dealers Automated Quotations | |
| ORBCOMM Inc (ORBC) NASDAQ - National Association of Securities Dealers Automated Quotations | |
| Origin Agritech Ltd. (SEED) NASDAQ - National Association of Securities Dealers Automated Quotations | |
| Ossen Innovation Co Ltd (ADR) (OSN) NASDAQ - National Association of Securities Dealers Automated Quotations | |
| Oxford Immunotec Global PLC (OXFD) NASDAQ - National Association of Securities Dealers Automated Quotations | |