- Oaktree Acquisition Corp. III Life Sciences (OACC)
- Oak Valley Bancorp (OVLY)
- Oatly Group AB (OTLY)
- OBOOK HOLDINGS INC. (OWLS)
- OCCIDENTAL PETROLEUM CORP /DE/ (OXY)
- Ocean Capital Acquisition Corp (OCAC-UN)
- OCEANEERING INTERNATIONAL INC (OII)
- OCEANFIRST FINANCIAL CORP (OCFC)
- OceanPal Inc. (SVRN)
- Ocean Power Technologies, Inc. (OPTT)
- OCTAVE SPECIALTY GROUP INC (OSG)
- Ocugen, Inc. (OCGN)
- OCULAR THERAPEUTIX, INC (OCUL)
- Oddity Tech Ltd (ODD)
- Odysight.ai Inc. (ODYS)
- Odyssey Health, Inc. (ODYY)
- ODYSSEY MARINE EXPLORATION INC (OMEX)
- OFA Group (OFAL)
- Offerpad Solutions Inc. (OPAD)
- OFFICE PROPERTIES INCOME TRUST (OPIRQ)
- OFG BANCORP (OFG)
- OGE ENERGY CORP. (OGE)
- OHIO VALLEY BANC CORP (OVBC)
- Ohmyhome Ltd (OMH)
- O-I Glass, Inc. /DE/ (OI)
- Oil-Dri Corp of America (ODC)
- OIL STATES INTERNATIONAL, INC (OIS)
- OIO Group (OIO)
- Okeanis Eco Tankers Corp. (ECO)
- Oklo Inc. (OKLO)
- Okta, Inc. (OKTA)
- OKYO Pharma Ltd (OKYO)
- OLAPLEX HOLDINGS, INC. (OLPX)
- OLB GROUP, INC. (OLB)
- OLD DOMINION FREIGHT LINE, INC. (ODFL)
- OLD MARKET CAPITAL Corp (OMCC)
- OLD NATIONAL BANCORP /IN/ (ONB)
- OLD REPUBLIC INTERNATIONAL CORP (ORI)
- OLD SECOND BANCORP INC (OSBC)
- Olema Pharmaceuticals, Inc. (OLMA)
- OLENOX INDUSTRIES INC. (OLOX)
- OLIN Corp (OLN)
- Ollie's Bargain Outlet Holdings, Inc. (OLLI)
- Omada Health, Inc. (OMDA)
- Omega Flex, Inc. (OFLX)
- OMEGA HEALTHCARE INVESTORS INC (OHI)
- OMEROS CORP (OMER)
- OmniAb, Inc. (OABI)
- OMNICELL, INC. (OMCL)
- OMNICOM GROUP INC. (OMC)
- OMS Energy Technologies Inc. (OMSE)
- Oncology Institute, Inc. (TOI)
- ONCOLYTICS BIOTECH INC (ONCY)
- Onconetix, Inc. (ONCO)
- Oncotelic Therapeutics, Inc. (OTLC)
- Ondas Inc. (ONDS)
- OneConstruction Group Ltd (ONEG)
- ONE Gas, Inc. (OGS)
- ONE Group Hospitality, Inc. (STKS)
- ONE LIBERTY PROPERTIES INC (OLP)
- OneMain Holdings, Inc. (OMF)
- OneMedNet Corp (ONMD)
- ONEOK INC /NEW/ (OKE)
- One & one Green Technologies. INC (YDDL)
- OneSpan Inc. (OSPN)
- ONESPAWORLD HOLDINGS Ltd (OSW)
- ONE STOP SYSTEMS, INC. (OSS)
- OneWater Marine Inc. (ONEW)
- Onfolio Holdings, Inc (ONFO)
- On Holding AG (ONON)
- ONITY GROUP INC. (ONIT)
- OnKure Therapeutics, Inc. (OKUR)
- ON SEMICONDUCTOR CORP (ON)
- ONTO INNOVATION INC. (ONTO)
- OOMA INC (OOMA)
- OPAL Fuels Inc. (OPAL)
- OP Bancorp (OPBK)
- Opendoor Technologies Inc. (OPEN)
- OPENLANE, Inc. (OPLN)
- Open Lending Corp (LPRO)
- OPEN TEXT CORP (OTEX)
- Opera Ltd (OPRA)
- OPKO HEALTH, INC. (OPK)
- Oportun Financial Corp (OPRT)
- OPPENHEIMER HOLDINGS INC (OPY)
- OppFi Inc. (OPFI)
- Optex Systems Holdings Inc (OPXS)
- OPTICAL CABLE CORP (OCC)
- OptimizeRx Corp (OPRX)
- OptimumBank Holdings, Inc. (OPHC)
- Optimum Communications, Inc. (OPTU)
- Option Care Health, Inc. (OPCH)
- Opus Genetics, Inc. (IRD)
- ORACLE CORP (ORCL)
- ORAGENICS INC (OGEN)
- ORAMED PHARMACEUTICALS INC. (ORMP)
- Orange County Bancorp, Inc. /DE/ (OBT)
- ORANGEKLOUD TECHNOLOGY INC. (ORKT)
- ORASURE TECHNOLOGIES INC (OSUR)
- Orchestra BioMed Holdings, Inc. (OBIO)
- Orchid Island Capital, Inc. (ORC)
- O REILLY AUTOMOTIVE INC (ORLY)
- ORGANIGRAM GLOBAL INC. (OGI)
- Organogenesis Holdings Inc. (ORGO)
- Organon & Co. (OGN)
- Oric Pharmaceuticals, Inc. (ORIC)
- Oriental Culture Holding LTD (OCG)
- ORIENTAL RISE HOLDINGS Ltd (ORIS)
- Origin Agritech LTD (SEED)
- Origin Bancorp, Inc. (OBK)
- Origin Investment Corp I (ORIQ)
- Origin Materials, Inc. (ORGN)
- Orion Digital Corp. (ORIO)
- ORION ENERGY SYSTEMS, INC. (OESX)
- Orion Group Holdings Inc (ORN)
- Orion Properties Inc. (ONL)
- Orion S.A. (OEC)
- ORIX CORP (IX)
- ORMAT TECHNOLOGIES, INC. (ORA)
- OR Royalties Inc. (OR)
- ORRSTOWN FINANCIAL SERVICES INC (ORRF)
- Orthofix Medical Inc. (OFIX)
- ORTHOPEDIATRICS CORP (KIDS)
- Oruka Therapeutics, Inc. (ORKA)
- Oscar Health, Inc. (OSCR)
- OSHKOSH CORP (OSK)
- OSI SYSTEMS INC (OSIS)
- Osprey Bitcoin Trust (OBTC)
- OSR Holdings, Inc. (OSRH)
- OS Therapies Inc (OSTX)
- Ostin Technology Group Co., Ltd. (OST)
- Otis Worldwide Corp (OTIS)
- Otter Tail Corp (OTTR)
- Our Bond, Inc. (OBAI)
- Ouster, Inc. (OUST)
- Outdoor Holding Co (POWW)
- OUTFRONT Media Inc. (OUT)
- Outlook Therapeutics, Inc. (OTLK)
- Outset Medical, Inc. (OM)
- Ovid Therapeutics Inc. (OVID)
- Ovintiv Inc. (OVV)
- Owens Corning (OC)
- Owlet, Inc. (OWLT)
- OXBRIDGE RE HOLDINGS Ltd (OXBR)
- OXFORD INDUSTRIES INC (OXM)
- Oxley Bridge Acquisition Ltd (OBA)
- Oyster Enterprises II Acquisition Corp (OYSE)
- OZ VISION INC. (OZVN)