| 1 | ORCL | Oracle Corp | $423.5B |
| 2 | ORLY | O'Reilly Automotive, Inc. | $76.3B |
| 3 | O | Realty Income Corporation | $59.1B |
| 4 | OXY | Occidental Petroleum Corporation | $55.9B |
| 5 | OKE | Oneok, Inc. | $54.5B |
| 6 | ODFL | Old Dominion Freight Line | $44.9B |
| 7 | ONC | BeOne Medicines Ltd. American Depositary Shares | $39.4B |
| 8 | ON | ON Semiconductor Corp | $31.6B |
| 9 | OTIS | Otis Worldwide Corporation | $28.2B |
| 10 | OKTA | Okta, Inc. Class A Common Stock | $25.8B |
| 11 | OMC | Omnicom Group Inc. | $23.4B |
| 12 | OWL | Blue Owl Capital Inc. | $18.5B |
| 13 | OVV | Ovintiv Inc. | $16.4B |
| 14 | ONTO | Onto Innovation Inc. | $15.3B |
| 15 | OHI | Omega Healthcare Investors Inc. | $14.7B |
| 16 | ONON | On Holding AG | $12.5B |
| 17 | OC | Owens Corning | $12.4B |
| 18 | ORI | Old Republic International Corporation | $10.4B |
| 19 | ONB | Old National Bancorp | $10.2B |
| 20 | OGE | OGE Energy Corp. | $9.7B |
| 21 | OSK | Oshkosh Corp. | $9.6B |
| 22 | OSCR | Oscar Health, Inc. | $8.6B |
| 23 | OKLO | Oklo Inc. | $8.4B |
| 24 | OMF | OneMain Holdings, Inc. | $7.5B |
| 25 | ORA | Ormat Technologies, Inc. | $6.6B |
| 26 | OGC | OceanaGold Corporation | $6.3B |
| 27 | OR | OR Royalties Inc. | $6.2B |
| 28 | OTEX | Open Text Corp | $6.0B |
| 29 | ORKA | Oruka Therapeutics, Inc. Common Stock | $6.0B |
| 30 | OBDC | Blue Owl Capital Corporation | $5.7B |
| 31 | OZK | Bank OZK | $5.6B |
| 32 | OUT | OUTFRONT Media Inc. | $5.5B |
| 33 | OTF | Blue Owl Technology Finance Corp. | $5.4B |
| 34 | OMAB | Grupo Aeroportuario del Centro Norte S.A.B. de C.V | $5.3B |
| 35 | OCTV | Octave Intelligence plc Class B Ordinary Shares | $5.3B |
| 36 | ONDS | Ondas Inc. Common Stock | $5.2B |
| 37 | OGS | ONE GAS, INC. | $5.0B |
| 38 | OLLI | Ollie's Bargain Outlet Holdings, Inc. Common Stock | $4.9B |
| 39 | OII | Oceaneering International Inc. | $4.8B |
| 40 | OPLN | OPENLANE, Inc | $4.5B |
| 41 | OLED | Universal Display Corp | $4.2B |
| 42 | OTTR | Otter Tail Corp | $3.9B |
| 43 | OSIS | OSI Systems Inc | $3.9B |
| 44 | OGN | Organon & Co. | $3.6B |
| 45 | OPCH | Option Care Health, Inc. Common Stock | $3.6B |
| 46 | OPEN | Opendoor Technologies Inc Common Stock | $3.4B |
| 47 | OUST | Ouster, Inc. | $2.9B |
| 48 | OSW | OneSpaWorld Holdings Limited Common Shares | $2.7B |
| 49 | OFG | OFG BANCORP | $2.2B |
| 50 | OLN | Olin Corp. | $2.1B |
| 51 | OCUL | Ocular Therapeutix, Inc. | $2.0B |
| 52 | OCFC | OceanFirst Financial Corp | $1.9B |
| 53 | OPRA | Opera Limited American Depositary Shares | $1.8B |
| 54 | OMCL | Omnicell Inc | $1.7B |
| 55 | OBK | Origin Bancorp, Inc. | $1.7B |
| 56 | OMDA | Omada Health, Inc. Common Stock | $1.4B |
| 57 | ORIC | Oric Pharmaceuticals, Inc. Common Stock | $1.4B |
| 58 | ODC | Oil-Dri Corporation of America | $1.3B |
| 59 | ORC | Orchid Island Capital, Inc. | $1.3B |
| 60 | OSBC | Old Second Bancorp Inc | $1.3B |
| 61 | OPY | Oppenheimer Holdings, Inc. | $1.2B |
| 62 | OCSL | Oaktree Specialty Lending Corporation | $1.1B |
| 63 | OI | O-I Glass, Inc. | $1.1B |
| 64 | OLMA | Olema Pharmaceuticals, Inc. Common Stock | $1.1B |
| 65 | OPK | Opko Health Inc. | $1.0B |
| 66 | ODTX | Odyssey Therapeutics, Inc. Common Stock | $1.0B |
| 67 | OMER | Omeros Corporation | $959M |
| 68 | OXLC | Oxford Lane Capital Corp. | $898M |
| 69 | OGG | Osisko Gold Group Inc. | $853M |
| 70 | ORRF | Orrstown Financial Services Inc | $838M |
| 71 | OPFI | OppFi Inc. | $803M |
| 72 | OFRM | Once Upon a Farm, PBC | $753M |
| 73 | OCS | Oculis Holding AG Ordinary shares | $704M |
| 74 | ODD | ODDITY Tech Ltd. Class A Ordinary Shares | $651M |
| 75 | OIO | OIO Group Ordinary Shares | $640M |
| 76 | OSPN | OneSpan Inc. Common Stock | $618M |
| 77 | OOMA | Ooma, Inc. Common Stock | $604M |
| 78 | ONT | Onterris, Inc. | $580M |
| 79 | OXM | Oxford Industries, Inc. | $552M |
| 80 | OLP | One Liberty Properties, Inc. | $527M |
| 81 | OBT | Orange County Bancorp, Inc. Common Stock | $518M |
| 82 | OIS | OIL STATES INTERNATIONAL, INC. | $491M |
| 83 | OVID | Ovid Therapeutics Inc. Common Stock | $491M |
| 84 | OWLS | OBOOK Holdings Inc. Class A Common Shares | $475M |
| 85 | OABI | OmniAb, Inc. Common Stock | $447M |
| 86 | OTLY | Oatly Group AB American Depositary Shares | $438M |
| 87 | OCGN | Ocugen, Inc. Common Stock | $434M |
| 88 | OFIX | Orthofix Medical Inc. Common Stock (DE) | $419M |
| 89 | OPI | Office Properties Income Trust Common shares of beneficial interest | $418M |
| 90 | ORN | Orion Group Holdings, Inc | $418M |
| 91 | OEC | Orion S.A. | $409M |
| 92 | OPRT | Oportun Financial Corporation Common Stock | $372M |
| 93 | OYSE | Oyster Enterprises II Acquisition Corp Class A Ordinary Shares | $350M |
| 94 | ONIT | Onity Group Inc. | $332M |
| 95 | OSS | One Stop Systems, Inc. Common Stock | $330M |
| 96 | OBA | Oxley Bridge Acquisition Limited Class A Ordinary Shares | $325M |
| 97 | OPTX | Syntec Optics Holdings, Inc. Class A Common Stock | $314M |
| 98 | OFLX | Omega Flex, Inc. | $312M |
| 99 | OTGA | OTG Acquisition Corp. I Class A Ordinary Share | $301M |