| NC Northeast Community Bancorp Inc | NECB | Financial services |
| NT Northern Technologies | NTIC | Basic materials |
| NT Northern Trust Corporation | NTRS | Financial services |
| NB Northfield Bancorp Inc | NFBK | Financial services |
| NB Northrim BanCorp Inc | NRIM | Financial services |
| NO NorthWestern Corporation | NWE | Utilities |
| NB Northwest Bancshares Inc | NWBI | Financial services |
| NF Norwood Financial Corp | NWFL | Financial services |
| NL Notable Labs, Ltd. | NTBLQ | Healthcare |
| NO Novanta Inc | NOVT | Technology |
| NO Novavax Inc | NVAX | Healthcare |
| NM Nova Minerals Limited Warrant | NVAWW | Basic materials |
| NO Novocure Ltd | NVCR | Healthcare |
| NO Novonix Ltd ADR | NVX | Industrials |
| NI Novo Integrated Sciences Inc | NVOS | Healthcare |
| NP NRX Pharmaceuticals Inc | NRXP | Healthcare |
| NB NSTS Bancorp Inc | NSTS | Financial services |
| NU NuCana PLC | NCNA | Healthcare |
| NU Nukkleus Inc | NUKK | Technology |
| NT Nurix Therapeutics Inc | NRIX | Healthcare |
| NC Nusatrip Incorporated Common Stock | NUTR | Consumer cyclical |
| NU Nutanix Inc | NTNX | Technology |
| NH Nutex Health Inc | NUTX | Healthcare |
| NU Nutriband Inc | NTRB | Healthcare |
| NW Nutriband Inc. Warrant | NTRBW | Healthcare |
| NU Nuvalent Inc | NUVL | Healthcare |
| NP Nuvectis Pharma Inc | NVCT | Healthcare |
| NH Nuvve Holding Corp | NVVE | Consumer cyclical |
| NU Nuwellis Inc | NUWE | Healthcare |
| NV NVE Corporation | NVEC | Technology |
| NV NVIDIA Corporation | NVDA | Technology |
| NG Nvni Group Limited Ordinary Shares | NVNI | Technology |
| NI NWPX Infrastructure, Inc. | NWPX | Basic materials |
| NC NWTN Inc. Class B Ordinary Shares | NWTN | Consumer cyclical |
| NS NXP Semiconductors NV | NXPI | Technology |
| OA Oaktree Acquisition Corp. III Life Sciences Class A Ordinary Share | OACC | Financial services |
| OA Oaktree Acquisition Corp. III Life Sciences Unit | OACCU | Financial services |
| OS Oaktree Specialty Lending Corp | OCSL | Financial services |
| OV Oak Valley Bancorp | OVLY | Financial services |
| OW Oak Woods Acquisition Corporation Class A Ordinary Shares | OAKU | Financial services |
| OG Oatly Group AB ADR | OTLY | Consumer defensive |
| OB Oblong Inc | OBLG | Technology |
| OF OceanFirst Financial Corp. | OCFC | Financial services |
| OC Ocugen Inc | OCGN | Healthcare |
| OT Ocular Therapeutix Inc | OCUL | Healthcare |
| OH Oculis Holding AG Ordinary shares | OCS | Healthcare |
| OT ODDITY Tech Ltd. Class A Ordinary Shares | ODD | Consumer defensive |
| OD ODP Corp | ODP | Consumer cyclical |
| OM Odyssey Marine Exploration Inc | OMEX | Basic materials |
| OC OFS Capital Corp | OFS | Financial services |
| OC OFS Credit Company Inc | OCCI | Financial services |
| OV Ohio Valley Banc Corp | OVBC | Financial services |
| OO Ohmyhome Limited Ordinary Shares | OMH | Real estate |
| OK Okta Inc | OKTA | Technology |
| OP OKYO Pharma Ltd ADR | OKYO | Healthcare |
| OH Olaplex Holdings Inc | OLPX | Consumer cyclical |
| OG OLB Group Inc | OLB | Technology |
| OD Old Dominion Freight Line Inc | ODFL | Industrials |
| OM Old Market Capital Corporation | OMCC | Communication services |
| ON Old National Bancorp | ONB | Financial services |
| OS Old Second Bancorp Inc | OSBC | Financial services |
| OP Olema Pharmaceuticals Inc | OLMA | Healthcare |
| OB Ollie's Bargain Outlet Hldg | OLLI | Consumer defensive |
| OS Olympic Steel Inc | ZEUS | Basic materials |
| OH Omada Health, Inc. Common Stock | OMDA | Healthcare |
| OF Omega Flex Inc | OFLX | Industrials |
| OM Omeros Corporation | OMER | Healthcare |
| OM OmniAb Inc. | OABI | Healthcare |
| OM Omnicell Inc | OMCL | Healthcare |
| OE OMS Energy Technologies Inc. | OMSE | Energy |
| OI Oncology Institute Inc | TOI | Healthcare |
| ON Onconetix Inc | ONCO | Healthcare |
| OG OneConstruction Group Limited Ordinary Shares | ONEG | Industrials |
| ON OneMedNet Corp. | ONMD | Healthcare |
| ON OneSpan Inc | OSPN | Technology |
| OH OneSpaWorld Holdings Ltd | OSW | Consumer cyclical |
| ON OneStream, Inc. | OS | Technology |
| OM Onewater Marine | ONEW | Consumer cyclical |
| OG One Group Hospitality Inc | STKS | Consumer cyclical |
| OS One Stop Systems Inc | OSS | Technology |
| OH Onfolio Holdings Inc | ONFO | Communication services |
| OH Onfolio Holdings Inc. Warrant | ONFOW | Communication services |
| OT OnKure Therapeutics, Inc. | OKUR | Healthcare |
| ON Ontrak Inc | OTRK | Healthcare |
| OS ON Semiconductor Corporation | ON | Technology |
| OF OPAL Fuels Inc | OPAL | Industrials |
| OT Opendoor Technologies Inc | OPEN | Real estate |
| OL Open Lending Corp | LPRO | Financial services |
| OP Opera Ltd | OPRA | Communication services |
| OH Opko Health Inc | OPK | Healthcare |
| OF Oportun Financial Corp | OPRT | Financial services |
| OS Optex Systems Holdings, Inc. Common Stock | OPXS | Industrials |
| OC Optical Cable Corporation | OCC | Technology |
| OP OPTIMIZERx Corp | OPRX | Healthcare |
| OC Option Care Health Inc | OPCH | Healthcare |
| OG Opus Genetics, Inc. | IRD | Healthcare |
| OB OP Bancorp | OPBK | Financial services |
| OP Oramed Pharmaceuticals Inc | ORMP | Healthcare |
| OT Orangekloud Technology Inc. Class A Ordinary Shares | ORKT | Technology |
| OC Orange County Bancorp Inc | OBT | Financial services |