| OACP | OACP | US90470L5194 | |
| OAEM | OAEM | US90470L4692 | |
| OAIM | OAIM | US90470L4445 | |
| OAK$A | OAK$A | | |
| OAK$B | OAK$B | | |
| OAKG | OAKG | US41456U3041 | |
| OAKI | OAKI | US41456U2050 | |
| OAKM | OAKM | US41456U1060 | |
| OALC | OALC | US90470L5277 | |
| OARK | OARK | US88636X8074 | |
| OASC | OASC | US90470L2951 | |
 OBE | OBE | US6744822031 | |
| OBOR | OBOR | US5007678684 | |
| OCAC | OCAC | | |
| OCAC.R | OCAC.R | | |
| OCAC.U | OCAC.U | | |
| OCAC.W | OCAC.W | | |
 Occidental Petroleum Corporation | OXY | US6745991058 | |
 Ocean Power Technologies, Inc. | OPTT | US6748705067 | |
 Oceaneering International, Inc. | OII | US6752321025 | |
| OCIO | OCIO | US26922A7274 | |
 Octave Specialty Group Inc. | OSG | US0231398845 | |
| ODHY | ODHY | US84858T7239 | |
 OEC | OEC | | |
| OEF | OEF | US4642871010 | |
| OEFA | OEFA | US00162Q3790 | |
 Offerpad Solutions Inc. | OPAD | US67623L5057 | |
 OFG | OFG | US67103X1028 | |
| OFRM | OFRM | US68237F1084 | |
 OGC | OGC | US6752224005 | |
 OGE Energy Corp. | OGE | US6708371033 | |
| OGG | OGG | | |
| OGIG | OGIG | US00162Q3618 | |
| OGSP | OGSP | US84858T8302 | |
| OI | OI | US67098H1041 | |
 OIH | OIH | US92189H6071 | |
 Oil States International, Inc. | OIS | US6780261052 | |
 Oil-Dri Corporation of America | ODC | US6778641000 | |
| OILT | OILT | US88224A3005 | |
 Okeanis Eco Tankers Corp. | ECO | | |
| OKLO | OKLO | US02156V1098 | |
| OKLS | OKLS | US88636W1559 | |
 Old Republic International Corporation | ORI | US6802231042 | |
 Olin Corporation | OLN | US6806652052 | |
| OMAH | OMAH | US45259A5149 | |
 Omega Healthcare Investors, Inc. | OHI | US6819361006 | |
 Omnicom Group Inc. | OMC | US6819191064 | |
| On Holding AG | ONON | | |
| OND | OND | US74347G5238 | |
 ONE Gas, Inc. | OGS | US68235P1084 | |
 One Liberty Properties Inc | OLP | US6824061039 | |
 OneMain Holdings, Inc. | OMF | US68268W1036 | |
| ONEO | ONEO | US78468R7623 | |
 ONEOK, Inc. | OKE | US6826801036 | |
| ONEV | ONEV | US78468R7540 | |
| ONEY | ONEY | US78468R7706 | |
 Onity Group Inc. | ONIT | US6757466064 | |
| ONL | ONL | US68629Y1038 | |
| ONLN | ONLN | US74347B1695 | |
| ONOF | ONOF | US37954Y1947 | |
 Onterris, Inc. | ONT | US6151111019 | |
 Onto Innovation, Inc. | ONTO | US6833441057 | |
| OOMA | OOMA | US6834161019 | |
| OOSP | OOSP | US84858T8484 | |
 OPENLANE, Inc. | OPLN | US48238T1097 | |
| OPER | OPER | US26922A4537 | |
| OPFI | OPFI | US68386H1032 | |
| OPP | OPP | US76882G1076 | |
| OPP$A | OPP$A | | |
| OPP$B | OPP$B | | |
| OPP$C | OPP$C | | |
| OPPE | OPPE | US97717X5529 | |
| OPPG | OPPG | | |
| Optimized Equity Income ETF | OEI | US53656G1590 | |
 Optimum Communications, Inc. | OPTU | US02156K1034 | |
 OptimumBank | OPHC | US68401P4037 | |
| OPY | OPY | US6837971042 | |
 OR | OR | US68390D1063 | |
| Oracle Corporation | ORCL | US68389X1054 | |
| Oragenics, Inc. | OGEN | US6840236094 | |
 Orchid Island Capital, Inc. | ORC | US68571X3017 | |
 Organon & Co. | OGN | US68622V1061 | |
| Origin Bancorp, Inc. | OBK | US68621T1025 | |
 Orion Group Holdings, Inc. | ORN | US68628V3087 | |
 Ormat Technologies, Inc. | ORA | US6866881021 | |
 Oscar Health, Inc. | OSCR | US6877931096 | |
| OSEA | OSEA | US41151J8852 | |
 Oshkosh Corporation | OSK | US6882392011 | |
| OSTX | OSTX | US68764Y2072 | |
| OTAI | OTAI | | |
| OTAI.R | OTAI.R | | |
| OTAI.U | OTAI.U | | |
| OTF | OTF | US0959241060 | |
| Otis Worldwide Corporation | OTIS | US68902V1070 | |
| OUNZ | OUNZ | US9210781012 | |
| OUSA | OUSA | US00162Q3873 | |
| OUSM | OUSM | US00162Q3956 | |
 Outfront Media Inc. | OUT | US69007J3041 | |
 Ovintiv Inc. | OVV | US69047Q1022 | |
| Owens Corning | OC | US6907421019 | |
