| Oakmark Bond Advisor | Oakmark Bond Institutional | Oakmark Bond R6 | Oakmark Equity and Income Fund |
| Oakmark Equity and Income Institutional | Oakmark Equity and Income R6 | Oakmark Fund | Oakmark Global Fund |
| Oakmark Global Institutional | Oakmark Global R6 | Oakmark Institutional | Oakmark International Fund |
| Oakmark International Institutional | Oakmark International R6 | Oakmark International Small Cap Instl | Oakmark International Small Cap R6 |
| Oakmark R6 | Oakmark Select Institutional | Oakmark Select R6 | Oakmark US Large Cap ETF |
| Oaktree Acquisition Corp III | OAKTREE FUND (LUX) II "R" (USD) | Oaktree Specialty Lending Corporation | Oak Valley Bancorp |
| Oak Woods Acquisition Corp | Oatly Group AB | Oberweis China Opportunities Instl | Oberweis Emerging Markets Institutional |
| Oberweis Global Opportunities Instl | Oberweis International Opps Instl | Oberweis Micro Cap Institutional | Oberweis Small-Cap Opportunities Instl |
| Oblong Inc | OBSIDIAN ENERGY LTD | OCA Acquisition Corp | Occidental Petroleum Corporation |
| OCEAN BIOMEDICAL INC | Oceaneering International, Inc. | OceanFirst Financial Corp | OceanFirst Financial Corp |
| OceanPal Inc. | Ocean Power Technologies Inc | OCONEE FEDERAL FINANCIAL CORP | Octane All-Cap Value Energy ETF |
| Ocugen Inc | Ocular Therapeutix Inc | OCULIS HOLDING AG | ODDITY TECH LTD. |
| Odyssey Marine Exploration Inc | Offerpad Solutions Inc | Office Depot, Inc. | Office Properties Income Trust |
| Office Properties Income Trust | OFG Bancorp | OFS Capital Corp | OFS Capital Corp |
| OFS Credit Company Inc | OFS Credit Company Inc | OFS Credit Company Inc | OFS Credit Company Inc |
| OGE Energy Corp. | Ohio Valley Banc Corp | OHMYHOME LTD | OIL-DRI CORP OF AMERICA |
| Oil Services ETF | Oil States International Inc. | Okeanis Eco Tankers Corp | Oklo Inc |
| Okta, Inc. | OKYO Pharma Ltd | Olaplex Holdings, Inc. | OLB Group Inc |
| Old Dominion Freight Line Inc. | Old Market Capital Corp | Old National Bancorp | Old National Bancorp |
| Old National Bancorp. | Old Point Financial Corp | Old Republic International Corporation | OLD SECOND BANCORP INC |
| OLEMA PHARMACEUTICALS INC | Olin Corp. | Ollie's Bargain Outlet Holdings Inc | Olo Inc. |
| Olympic Steel Inc | Omega Flex Inc | Omega Healthcare Investors Inc. | Omega Therapeutics |
| Omeros Corporation | OMNIAB INC | Omnicell Inc | Omnicom Group Inc. |
| Omniq Corp | ON24 INC. | On Assignment Inc | ONCOCYTE CORP |
| Oncology Institute Inc/The | Oncolytics Biotech Inc | ONCONETIX INC | ONDAS HOLDINGS INC |
| OneAscent Core Plus Bond ETF | OneAscent Emerging Markets ETF | OneAscent International Equity ETF | ONEASCENT LARGE CAP CORE |
| OneAscent Small Cap Core ETF | OneConnect Financial Technology Co Ltd | ONE Gas Inc | ONE GROUP HOSPITALITY INC/TH |
| One Liberty Properties, Inc. | OneMain Holdings, Inc. | OneMedNet Corp | ONEOK Inc. |
| One Real Messenger Corp | ONESPAN INC | ONESPAWORLD HOLDINGS LTD | One Stop Systems Inc |
| ONESTREAM, INC. | OneWater Marine Inc. | Onfolio Holdings Inc | On Holding AG |
| Onity Group Inc | ON Semiconductor Corp. | Onto Innovations Inc | Ontrak Inc. |
| OOMA INC | Opal Dividend Income ETF | OPAL Fuels Inc | OP Bancorp |
| Opendoor Technologies Inc | OPENLANE Inc | Open Lending Corp | Open Text Corporation |
| Opera Ltd | OpGen Inc | Opko Health, Inc. | OPORTUN FINANCIAL CORP |
| OppenheimerFunds Inc | OPPENHEIMER HOLDINGS-CL A | Oppenheimer Large Cap Revenue ETF | Oppenheimer Ultra Dividend Revenue ETF |
| OPPFI INC | OPRA NEWTEK BUSINESS SERVICES CORP. EQUITY OPTION 12.5 CALL JUL 2024 | Optex Systems Holdings Inc | OPTHEA LTD-SPON ADR |
| Optical Cable Corp | OPTICA RARE EARTH & CMS | OptimizeRx Corporation | OptimumBank Holdings Inc |
| OptiNose Inc | OPTION CARE HEALTH INC | Opus Genetics Inc | Opus Small Cap Value ETF |
| Oracle Corp. | Oragenics Inc | ORAMED PHARMACEUTICALS INC | Orange |
| Orange County Bancorp Inc | ORANGEKLOUD TECHNOLOGY INC. | OraSure Technologies Inc | Orchestra Biomed Holdings Inc |
| Orchid Island Capital, Inc. | Oregon Municipal Bond Portfolio | O'Reilly Automotive Inc. | ORGANIGRAM HOLDINGS INC |
| ORGANOGENESIS HOLDINGS INC | Organon & Co. | Organovo Holdings Inc | Orgenesis Inc |
| ORIC Pharmaceuticals | Oriental Culture Holding Ltd | Oriental Rise Holdings Ltd. | Origin Agritech Ltd |
| Origin Bancorp Inc | Origin Materials, Inc. | Orion Energy Systems Inc | Orion Group Holdings Inc |
| ORION OFFICE REIT INC | Orion SA | ORIX Corporation | Orla Mining Ltd |
| Ormat Technologies Inc | Orrstown Financial Services, Inc. | ORTHOFIX MEDICAL INC | ORTHOPEDIATRICS CORP |
| Oruka Therapeutics Inc | Oscar Health, Inc. | Oshkosh Corporation | Osisko Development Corp |
| Osisko Gold Royalties Ltd. | OSI Systems, Inc. | Osterweis Fund | Osterweis Strategic Income Fund |
| OS THERAPIES INC. | Ostin Technology Group Co Ltd | Otis | Otter Tail Corp |
| Ouster, Inc. | OUTBRAIN INC | Outfront Media Inc. | Outlook Therapeutics Inc |
| Outset medical Inc | OVERLAY SHARES CORE BOND ETF | Overlay Shares Foreign Equity ETF | Overlay Shares Hedged Large Cap Equity ETF |
| OVERLAY SHARES LARGE CAP EQ | Overlay Shares Municipal Bond ETF | OVERLAY SHARES SHRT TERM BON | Overlay Shares Small Cap Equity ETF |
| Ovid Therapeutics Inc | Ovintiv Inc | Owens Corning | Owens-Illinois, Inc. |
| Owens & Minor Inc | OWLET INC | Oxbridge Re Holdings Ltd | OXFORD INDUSTRIES INC |
| OXFORD LANE CAP CORP CAL NT 30 | Oxford Lane Capital Corp | Oxford Lane Capital Corp | Oxford Lane Capital Corp |
| Oxford Lane Capital Corp | Oxford Lane Capital Corp | Oxford Lane Capital Corp. | Oxford Square Capital Corp |
| Oxford Square Capital Corp | Oxford Square Capital Corp. | | |