| OR | OR Royalties Inc. | Basic Materials | $6.7B | — | 0 |
| ORCL-PD | Oracle Corporation | — | — | — | 0 |
| OGEN | Oragenics, Inc. | Healthcare | $2.3M | — | 0 |
| ORMP | Oramed Pharmaceuticals Inc. | Healthcare | $196M | — | 0 |
| OBT | Orange County Bancorp, Inc. | Financial Services | $501M | — | 0 |
| ORANY | Orange S.A. | Communication Services | $42.4B | — | 0 |
| ORKT | Orangekloud Technology Inc. | Technology | $5.2M | — | 0 |
| ORNJY | OranjeBTC S.A. Educacao E Investmentimento/ADR | — | — | — | 0 |
| OSUR | OraSure Technologies, Inc. | Healthcare | $271M | — | 0 |
| OIG | Orbital Infrastructure Group, Inc. | Industrials | $1.8M | — | 0 |
| OBIO | Orchestra BioMed Holdings, Inc. | Healthcare | $356M | — | 0 |
| ORC | Orchid Island Capital, Inc. | Real Estate | $1.0B | — | 0 |
| ORESF | Orestone Mining Corp. | Basic Materials | $5.4M | — | 0 |
| OGI | Organigram Global Inc. | Healthcare | $155M | — | 0 |
| ORGJF | Organo Corporation | Industrials | $3.8B | — | 0 |
| ORGO | Organogenesis Holdings Inc. | Healthcare | $183M | — | 0 |
| OGN | Organon & Co. | Healthcare | $3.6B | — | 0 |
| ORIC | ORIC Pharmaceuticals, Inc. | Healthcare | $1.4B | — | 0 |
| OCG | Oriental Culture Holding Ltd. | Consumer Cyclical | $3.0M | — | 0 |
| ORISF | Oriental Rise Holdings Ltd | — | — | — | 0 |
| SEED | Origin Agritech Limited | Basic Materials | $11.2M | — | 0 |
| OBK | Origin Bancorp, Inc. | Financial Services | $1.6B | — | 0 |
| ORIQW | Origin Investment Corp I Warrant. | Financial Services | $1.4M | — | 0 |
| OCLN | OriginClear, Inc. | Industrials | $8.9M | — | 0 |
| ORIB | Orion Bliss Corp. | — | — | — | 0 |