| 1 | ORCL | Oracle Corp | $446.3B |
| 2 | ORLY | O'Reilly Automotive, Inc. | $68.5B |
| 3 | OKE | Oneok, Inc. | $58.9B |
| 4 | OXY | Occidental Petroleum Corporation | $58.8B |
| 5 | O | Realty Income Corporation | $53.6B |
| 6 | ONC | BeOne Medicines Ltd. American Depositary Shares | $39.7B |
| 7 | ODFL | Old Dominion Freight Line | $35.9B |
| 8 | OKTA | Okta, Inc. Class A Common Stock | $31.9B |
| 9 | ON | ON Semiconductor Corp | $27.2B |
| 10 | OTIS | Otis Worldwide Corporation | $26.1B |
| 11 | OMC | Omnicom Group Inc. | $21.0B |
| 12 | OVV | Ovintiv Inc. | $17.3B |
| 13 | OHI | Omega Healthcare Investors Inc. | $14.1B |
| 14 | ONTO | Onto Innovation Inc. | $12.9B |
| 15 | OSCR | Oscar Health, Inc. | $9.9B |
| 16 | OC | Owens Corning | $9.8B |
| 17 | ONB | Old National Bancorp | $9.7B |
| 18 | ORI | Old Republic International Corporation | $9.6B |
| 19 | OGE | OGE Energy Corp. | $9.4B |
| 20 | ONON | On Holding AG | $9.1B |
| 21 | OSK | Oshkosh Corp. | $9.1B |
| 22 | OKLO | Oklo Inc. | $7.1B |
| 23 | OMF | OneMain Holdings, Inc. | $7.0B |
| 24 | OR | OR Royalties Inc. | $6.9B |
| 25 | OWL | Blue Owl Capital Inc. | $6.7B |
| 26 | OGC | OceanaGold Corporation | $6.3B |
| 27 | ORKA | Oruka Therapeutics, Inc. Common Stock | $6.3B |
| 28 | ORA | Ormat Technologies, Inc. | $6.0B |
| 29 | OBDC | Blue Owl Capital Corporation | $5.5B |
| 30 | OTEX | Open Text Corp | $5.5B |
| 31 | OZK | Bank OZK | $5.2B |
| 32 | OCTV | Octave Intelligence plc Class B Ordinary Shares | $5.1B |
| 33 | OUT | OUTFRONT Media Inc. | $4.9B |
| 34 | OTF | Blue Owl Technology Finance Corp. | $4.9B |
| 35 | OGS | ONE GAS, INC. | $4.7B |
| 36 | OMAB | Grupo Aeroportuario del Centro Norte S.A.B. de C.V | $4.7B |
| 37 | OII | Oceaneering International Inc. | $4.6B |
| 38 | OLLI | Ollie's Bargain Outlet Holdings, Inc. Common Stock | $4.5B |
| 39 | ONDS | Ondas Inc. Common Stock | $4.3B |
| 40 | OPLN | OPENLANE, Inc | $4.2B |
| 41 | OTTR | Otter Tail Corp | $3.7B |
| 42 | OPCH | Option Care Health, Inc. Common Stock | $3.6B |
| 43 | OLED | Universal Display Corp | $3.6B |
| 44 | OGN | Organon & Co. | $3.6B |
| 45 | OSIS | OSI Systems Inc | $3.2B |
| 46 | OUST | Ouster, Inc. | $2.5B |
| 47 | OPEN | Opendoor Technologies Inc Common Stock | $2.5B |
| 48 | OSW | OneSpaWorld Holdings Limited Common Shares | $2.2B |
| 49 | OFG | OFG BANCORP | $2.2B |
| 50 | OCUL | Ocular Therapeutix, Inc. | $2.2B |
| 51 | OLN | Olin Corp. | $1.9B |
| 52 | OCFC | OceanFirst Financial Corp | $1.7B |
| 53 | OPRA | Opera Limited American Depositary Shares | $1.6B |
| 54 | OMCL | Omnicell Inc | $1.5B |
| 55 | ORIC | Oric Pharmaceuticals, Inc. Common Stock | $1.3B |
| 56 | OMER | Omeros Corporation | $1.3B |
| 57 | ODC | Oil-Dri Corporation of America | $1.3B |
| 58 | OSBC | Old Second Bancorp Inc | $1.3B |
| 59 | OMDA | Omada Health, Inc. Common Stock | $1.3B |
| 60 | OPK | Opko Health Inc. | $1.2B |
| 61 | OPY | Oppenheimer Holdings, Inc. | $1.2B |
| 62 | ORC | Orchid Island Capital, Inc. | $1.2B |
| 63 | ODTX | Odyssey Therapeutics, Inc. Common Stock | $1.2B |
| 64 | OBX | Obsidian Therapeutics, Inc. Common Stock | $1.1B |
| 65 | OCSL | Oaktree Specialty Lending Corporation | $1.1B |
| 66 | OI | O-I Glass, Inc. | $933M |
| 67 | OXLC | Oxford Lane Capital Corp. | $891M |
| 68 | OLMA | Olema Pharmaceuticals, Inc. Common Stock | $859M |
| 69 | ODD | ODDITY Tech Ltd. Class A Ordinary Shares | $835M |
| 70 | OGG | Osisko Gold Group Inc. | $832M |
| 71 | ORRF | Orrstown Financial Services Inc | $827M |
| 72 | OFRM | Once Upon a Farm, PBC | $695M |
| 73 | OIO | OIO Group Ordinary Shares | $682M |
| 74 | OABI | OmniAb, Inc. Common Stock | $650M |
| 75 | OSPN | OneSpan Inc. Common Stock | $645M |
| 76 | ONT | Onterris, Inc. | $636M |
| 77 | OOMA | Ooma, Inc. Common Stock | $627M |
| 78 | OCS | Oculis Holding AG Ordinary shares | $563M |
| 79 | OPFI | OppFi Inc. | $556M |
| 80 | OVID | Ovid Therapeutics Inc. Common Stock | $525M |
| 81 | OBT | Orange County Bancorp, Inc. Common Stock | $516M |
| 82 | OIS | OIL STATES INTERNATIONAL, INC. | $507M |
| 83 | OLP | One Liberty Properties, Inc. | $500M |
| 84 | OWLS | OBOOK Holdings Inc. Class A Common Shares | $486M |
| 85 | OXM | Oxford Industries, Inc. | $426M |
| 86 | OSPR | Osprey Acquisition Corp. III Class A Ordinary Shares | $403M |
| 87 | OTLY | Oatly Group AB American Depositary Shares | $399M |
| 88 | OPI | Office Properties Income Trust Common shares of beneficial interest | $387M |
| 89 | OPRT | Oportun Financial Corporation Common Stock | $375M |
| 90 | OIM | OneIM Acquisition Corp. Class A Ordinary Shares | $367M |
| 91 | ORN | Orion Group Holdings, Inc | $366M |
| 92 | OBIO | Orchestra BioMed Holdings, Inc. Ordinary Shares | $365M |
| 93 | OFIX | Orthofix Medical Inc. Common Stock (DE) | $355M |
| 94 | OYSE | Oyster Enterprises II Acquisition Corp Class A Ordinary Shares | $352M |
| 95 | OBA | Oxley Bridge Acquisition Limited Class A Ordinary Shares | $327M |
| 96 | OEC | Orion S.A. | $324M |
| 97 | OTGA | OTG Acquisition Corp. I Class A Ordinary Share | $303M |