| O-Bank Co. Ltd. | | 3 | 10 |
| O-I Glass, Inc. | OI | 3 | 438 |
| O'Reilly Automotive, Inc. | | 4 | 1,471 |
| Oak Valley Bancorp | OVLY | 3 | 56 |
| Oaktree Specialty Lending Corporation | OCSL | 3 | 19 |
| Obara Group, Inc. | | 3 | 25 |
| Obayashi Corp. | | 3 | 128 |
| Oberoi Realty Limited | | 5 | 72 |
| OBIC Business Consultants Co., Ltd. | OBBCY | 3 | 37 |
| OBIC Co. Ltd. | OBICY | 3 | 128 |
| Objective Corporation Limited | | 3 | 20 |
| Oblong, Inc. | | 1 | 18 |
| Obrascon Huarte Lain SA | | 4 | 12 |
| OBSIDIAN ENERGY LTD. | OBE | 3 | 56 |
| OC Oerlikon Corp. AG | | 3 | 27 |
| Ocado Group Plc | | 3 | 40 |
| Occidental Petroleum Corporation | OXY | 5 | 1,212 |
| Ocean Biomedical, Inc. | OCEA | 2 | 0 |
| Ocean Power Technologies, Inc. | OPTT | 4 | 37 |
| OceanaGold Corporation | OGC | 3 | 135 |
| Oceaneering International, Inc. | OII | 3 | 513 |
| OceanFirst Financial Corp. | OCFC | 4 | 323 |
| Oceania Healthcare Limited | | 3 | 0 |
| OCI Holdings Co. Ltd. | | 3 | 25 |
| OCI NV | | 11 | 30 |
| Ocugen, Inc. | OCGN | 3 | 115 |
| Ocular Therapeutix, Inc. | OCUL | 3 | 326 |
| Oculis Holding AG | OCS | 3 | 36 |
| Ocumension Therapeutics | | 4 | 11 |
| Odakyu Electric Railway Co., Ltd. | ODKUY | 3 | 33 |
| ODDITY Tech Ltd. | ODD | 3 | 106 |
| Odfjell Drilling Ltd. | | 4 | 52 |
| Odfjell SE | | 3 | 24 |
| OdontoPrev SA | | 4 | 27 |
| Odyssey Marine Exploration, Inc. | OMEX | 3 | 55 |
| OEM International AB | | 3 | 13 |
| Oesterreichische Post AG | | 3 | 28 |
| Offcn Education Technology Co., Ltd. | | 10 | 12 |
| Offerpad Solutions Inc. | OPAD | 4 | 67 |
| Office Properties Income Trust | OPI | 4 | 8 |
| Offshore Oil Engineering Co., Ltd. | | 8 | 17 |
| OFG Bancorp | OFG | 3 | 389 |
| OFILM Group Co., Ltd. | | 22 | 28 |
| OFX Group Limited | | 3 | 22 |
| OGE Energy Corp. | OGE | 3 | 703 |
| Ohara, Inc. | | 3 | 10 |
| Ohio Valley Banc Corp. | OVBC | 3 | 115 |
| Ohsho Food Service Corp. | | 3 | 26 |
| OI S.A. | | 4 | 6 |
| Oil & Natural Gas Corporation Limited | | 6 | 77 |
| Oil Co. LUKOIL PJSC | | 2 | 0 |
| Oil India Limited | | 5 | 45 |
| Oil Refineries Ltd. | | 5 | 30 |
| Oil States International, Inc. | OIS | 3 | 287 |
| Oil-Dri Corporation of America | ODC | 3 | 93 |
| Oiles Corp. | | 3 | 19 |
| Oisix ra daichi, Inc. | | 3 | 13 |
| Oita Bank, Ltd. | | 3 | 20 |
| Oji Holdings Corp. | | 3 | 56 |
| Okabe Co., Ltd. | | 3 | 17 |
| Okamoto Industries, Inc. | | 3 | 20 |
| Okamoto Machine Tool Works, Ltd. | | 3 | 11 |
| Okamura Corp. | | 3 | 35 |
| Okasan Securities Group, Inc. | | 3 | 25 |
| OKEA ASA | | 3 | 13 |
| Okeanis Eco Tankers Corp. | ECO | 4 | 21 |
| Oki Electric Industry Co., Ltd. | | 3 | 39 |
| Okinawa Cellular Telephone Co. | | 3 | 26 |
| Okinawa Financial Group, Inc. | | 3 | 20 |
| Oklo Inc. | OKLO | 4 | 142 |
| Okta, Inc. | OKTA | 4 | 889 |
| Okuma Corp. (Japan) | | 3 | 29 |
| Okumura Corp. | | 3 | 27 |
| Okura Industrial Co., Ltd. | | 3 | 13 |
| Okuwa Co., Ltd. | | 3 | 17 |
| Ola Electric Mobility Ltd. | | 5 | 14 |
| Olam Group Limited | | 4 | 28 |
| Olaplex Holdings, Inc. | | 2 | 0 |
| Old Dominion Freight Line, Inc. | ODFL | 3 | 1,041 |
| Old Mutual Ltd. | | 3 | 73 |
| Old National Bancorp | | 3 | 555 |
| Old Point Financial Corporation | | 2 | 52 |
| Old Republic International Corporation | ORI | 3 | 716 |
| Old Second Bancorp, Inc. | OSBC | 3 | 288 |
| Olectra Greentech Limited | | 5 | 15 |
| Olema Pharmaceuticals, Inc. | OLMA | 3 | 314 |
| Olin Corporation | OLN | 3 | 521 |
| OLINK HOLDING AB | | 2 | 0 |
| Ollamani SAB | | 5 | 23 |
| Ollie's Bargain Outlet Holdings, Inc. | OLLI | 3 | 659 |
| Olo Inc. | | 3 | 299 |
| Olvi Oyj | | 3 | 12 |
| Olympic Steel, Inc. | | 3 | 245 |
| Olympus Corp. | | 3 | 132 |
| Omada Health, Inc. | OMDA | 1 | 67 |
| Omega Flex, Inc. | OFLX | 3 | 71 |
| Omega Healthcare Investors, Inc. | OHI | 3 | 794 |
| Omega Therapeutics, Inc. | | 1 | 0 |
| Omeros Corporation | OMER | 3 | 220 |
| Omni Bridgeway Limited | | 3 | 19 |
| Omnia Holdings Ltd. | | 4 | 27 |
| OmniAb, Inc. | OABI | 3 | 84 |
| Omnicell, Inc. | OMCL | 3 | 459 |
| Omnicom Group Inc. | OMC | 6 | 1,185 |
| OMRON Corp. | | 3 | 61 |
| OMV AG | | 3 | 148 |
| OMV Petrom SA | | 6 | 13 |
| ON HOLDING AG | ONON | 3 | 349 |
| ON Semiconductor Corporation | ON | 3 | 1,028 |
| On The Beach Group Plc | | 4 | 18 |
| ON24, Inc. | | 3 | 60 |
| Oncoclinicas do Brasil Servicos Medicos SA | | 11 | 13 |
| Oncocyte Corporation | | 5 | 45 |
| Oncternal Therapeutics, Inc. | | 1 | 0 |
| Ondas Inc. | ONDS | 5 | 313 |
| One 97 Communications Limited | | 6 | 61 |
| ONE Gas, Inc. | OGS | 3 | 620 |
| One Liberty Properties, Inc. | OLP | 3 | 242 |
| One REIT, Inc. | | 2 | 13 |
| One Software Technologies Ltd. | | 6 | 32 |
| One Stop Systems, Inc. | OSS | 3 | 54 |
| OneMain Holdings, Inc. | OMF | 3 | 565 |
| Oneness Biotech Co., Ltd. | | 3 | 16 |
| ONEOK, Inc. | OKE | 5 | 1,377 |
| OneSource Specialty Pharma Ltd. | | 3 | 20 |
| OneSpan Inc. | OSPN | 3 | 290 |
| OneSpaWorld Holdings Limited | OSW | 3 | 394 |
| OneStream, Inc. | | 1 | 0 |
| OneWater Marine Inc. | ONEW | 3 | 181 |
| Onewo Inc. | | 7 | 24 |
| ONEX CORPORATION | | 4 | 96 |
| Onity Group Inc. | ONIT | 3 | 196 |
| OnKure Therapeutics, Inc. | OKUR | 3 | 13 |
| Ono Pharmaceutical Co., Ltd. | | 3 | 85 |
| Onoken Co., Ltd. | | 3 | 15 |
| Ontex Group NV | | 3 | 19 |
| Onto Innovation Inc. | ONTO | 3 | 718 |
| Ontrak, Inc. | | 2 | 0 |
| Onward Holdings Co., Ltd. | | 3 | 22 |
| oOh!media Limited | | 3 | 22 |
| Ooma, Inc. | OOMA | 3 | 234 |
| OP Bancorp | OPBK | 3 | 148 |
| OPAL Fuels Inc. | OPAL | 3 | 42 |
| OPC Energy Ltd. | | 6 | 40 |
| Open House Group Co., Ltd. | OPNHY | 3 | 69 |
| Open Lending Corporation | | 3 | 176 |
| Open Text Corporation | OTEX | 4 | 243 |
| Open Up Group, Inc. | | 3 | 33 |
| Opendoor Technologies Inc. | OPEN | 5 | 400 |
| OPENLANE, Inc. | OPLN | 3 | 447 |
| Opera Limited | OPRA | 2 | 34 |
| Operadora de Sites Mexicanos SAB de CV | | 4 | 24 |
| OPKO Health, Inc. | OPK | 3 | 243 |
| OPmobility SE | | 3 | 41 |
| Oportun Financial Corporation | OPRT | 2 | 95 |
| Oppein Home Group, Inc. | | 10 | 35 |
| OppFi Inc. | OPFI | 3 | 191 |
| Opple Lighting Co., Ltd. | | 7 | 16 |
| OPTEX GROUP Co., Ltd. | | 3 | 31 |
| Optex Systems Holdings, Inc. | OPXS | 2 | 10 |
| Optical Cable Corporation | OCC | 3 | 34 |
| OPTiM Corp. | | 2 | 14 |
| Optima Bank SA | | 3 | 37 |
| OptimizeRx Corporation | OPRX | 3 | 193 |
| OptiNose, Inc. | | 3 | 0 |
| Option Care Health, Inc. | OPCH | 3 | 567 |
| OPTORUN Co., Ltd. | | 3 | 22 |
| Opus Genetics, Inc. | IRD | 3 | 52 |
| OPUS GLOBAL Nyrt. | | 4 | 12 |
| OR ROYALTIES INC. | OR | 2 | 202 |
| Ora Banda Mining Ltd | | 2 | 33 |
| Oracle Corp Japan | | 3 | 103 |
| Oracle Corporation | ORCL | 4 | 2,174 |
| Oracle Financial Services Software Limited | | 7 | 55 |
| Oragenics, Inc. | OGEN | 4 | 29 |
| Oramed Pharmaceuticals Inc. | ORMP | 3 | 11 |
| ORANGE | FNCTF | 3 | 190 |
| ORANGE BELGIUM S.A. | | 4 | 15 |
| Orange County Bancorp, Inc. | OBT | 3 | 69 |
| Orange Polska SA | | 4 | 34 |
| Orange SA | FNCTF | 3 | 198 |
| Orascom Construction Plc | | 6 | 17 |
| OraSure Technologies, Inc. | OSUR | 3 | 218 |
| Orbia Advance Corporation SAB de CV | | 4 | 31 |
| ORCHARD THERAPEUTICS PLC | | 1 | 0 |
| Orchestra Biomed Holdings, Inc. | OBIO | 3 | 75 |
| Orchid Island Capital, Inc. | ORC | 3 | 253 |
| Ordina NV | | 1 | 0 |
| Orezone Gold Corporation | | 2 | 17 |
| ORG Technology Co., Ltd. | | 12 | 13 |
| Organigram Global Inc. | OGI | 1 | 10 |
| Organo Corp. | ORCRY | 3 | 52 |
| Organogenesis Holdings Inc. | ORGO | 3 | 195 |
| ORGANON & CO. | OGN | 6 | 937 |
| Organovo Holdings, Inc. | | 3 | 35 |
| ORIC Pharmaceuticals, Inc. | ORIC | 3 | 270 |
| Orica Limited | | 3 | 81 |
| Orient Cement Limited | | 10 | 16 |
| Orient Corp. | | 9 | 19 |
| Orient Electric Ltd. | | 6 | 11 |
| Orient Overseas (International) Limited | | 4 | 76 |
| Orient Securities Co., Ltd. | | 9 | 27 |
| Orient Securities Co., Ltd. | | 9 | 31 |
| Orient Semiconductor Electronics Ltd. | | 3 | 13 |
| Oriental Energy Co., Ltd. | | 23 | 11 |
| Oriental Holdings Berhad | | 5 | 11 |
| Oriental Land Co., Ltd. | | 3 | 94 |
| Oriental Pearl Group Co. Ltd. | | 7 | 16 |
| Oriental Shiraishi Corp. | | 3 | 18 |
| Origin Bancorp, Inc. | OBK | 3 | 315 |
| Origin Energy Limited | | 4 | 127 |
| Origin Enterprises Plc | | 3 | 7 |
| Origin Materials, Inc. | | 4 | 10 |
| Oriola Corp. | | 3 | 10 |
| ORION Corp. (Korea) | | 4 | 49 |
| Orion Energy Systems, Inc. | OESX | 3 | 36 |
| Orion Group Holdings, Inc. | | 3 | 239 |
| Orion Oyj | | 3 | 109 |
| Orion Properties Inc. | ONL | 3 | 37 |
| Orion Retail Properties Ltd. | | 2 | 17 |
| Orion S.A. | | 7 | 272 |
| ORIX Corp. | IX | 3 | 165 |
| ORIX CORPORATION | IX | 3 | 12 |
| ORIX JREIT, Inc. | | 2 | 61 |
| Orizon Valorizacao de Residuos SA | | 7 | 21 |
| Orkla ASA | | 3 | 152 |
| Orla Mining Ltd. | | 4 | 126 |
| ORLEN SA | | 7 | 133 |
| Ormat Technologies, Inc. | ORA | 6 | 540 |
| oRo Co., Ltd. | | 3 | 16 |
| Orora Limited | | 3 | 49 |
| Orrstown Financial Services, Inc. | ORRF | 4 | 254 |
| Orsero SpA | | 5 | 11 |
| Orsted A/S | | 4 | 146 |
| Orthofix Medical Inc. | OFIX | 3 | 230 |
| OrthoPediatrics Corp. | KIDS | 3 | 213 |
| Oruka Therapeutics, Inc. | ORKA | 4 | 289 |
| Osaka Gas Co., Ltd. | | 3 | 123 |
| Osaka Organic Chemical Industry Ltd. | | 3 | 18 |
| OSAKA SODA CO., LTD. | | 3 | 25 |
| OSAKA STEEL CO., LTD. | | 3 | 19 |
| OSAKA Titanium Technologies Co., Ltd. | | 3 | 20 |
| Osaki Electric Co., Ltd. | | 3 | 20 |
| OSB Group Plc | | 3 | 65 |
| Oscar Health, Inc. | OSCR | 3 | 396 |
| Oscotec, Inc. | | 4 | 14 |
| OSG Corp. (6136) | | 3 | 38 |
| Oshkosh Corporation | OSK | 3 | 733 |
| OSI Systems, Inc. | OSIS | 3 | 496 |
| Osisko Development Corp. | | 3 | 13 |
| OSISKO GOLD ROYALTIES LTD | | 2 | 0 |
| Osisko Mining Inc. | | 2 | 0 |
| OSL Group Limited | | 9 | 20 |
| Osotspa Public Co. Ltd. | OSOPF | 3 | 13 |
| Otis Worldwide Corporation | OTIS | 4 | 1,422 |
| Otokar Otomotiv ve Savunma Sanayi AS | | 3 | 15 |
| OTP Bank Nyrt | | 3 | 163 |
| OTSUKA CORP. | | 3 | 96 |
| Otsuka Holdings Co., Ltd. | | 3 | 148 |
| Otter Tail Corporation | OTTR | 3 | 495 |
| OTTOGI Corp. | | 3 | 24 |
| OUE Limited | | 3 | 10 |
| OUE Real Estate Investment Trust | | 3 | 13 |
| Ouster, Inc. | OUST | 3 | 354 |
| Outbrain Inc. | | 4 | 116 |
| Outdoor Holding Company | POWW | 2 | 154 |
| OUTFRONT Media Inc. | OUT | 3 | 508 |
| Outlook Therapeutics, Inc. | OTLK | 4 | 53 |
| Outokumpu Oyj | | 3 | 34 |
| Outset Medical, Inc. | OM | 4 | 160 |
| OUTSOURCING, Inc. | | 2 | 0 |
| OUTsurance Group Ltd. | | 3 | 69 |
| Ovctek China, Inc. | | 11 | 14 |
| Oversea-Chinese Banking Corporation Limited | | 3 | 159 |
| OVERSEAS SHIPHOLDING GROUP, INC. | | 2 | 0 |
| OVH Groupe SAS | | 4 | 17 |
| Ovid Therapeutics Inc. | OVID | 4 | 159 |
| Ovintiv Inc. | OVV | 4 | 750 |
| OVS SpA | | 5 | 46 |
| Ovzon AB | | 4 | 16 |
| Owens & Minor, Inc. | | 3 | 249 |
| Owens Corning | OC | 3 | 807 |
| Owlet, Inc. | OWLT | 1 | 12 |
| OX2 AB | | 2 | 0 |
| Oxbridge Re Holdings Limited | OXBR | 4 | 15 |
| Oxford Biomedica Plc | | 3 | 14 |
| Oxford Industries, Inc. | OXM | 3 | 338 |
| Oxford Instruments Plc | | 3 | 35 |
| Oxford Nanopore Technologies Plc | | 3 | 33 |
| OY Nofar Energy Ltd. | | 8 | 23 |
| OYAK Cimento Fabrikalari AS | | 4 | 28 |
| Oyo Corp. | | 3 | 13 |
| Ozon Holdings Plc | | 2 | 0 |