| OneREIT (ONR.UN) TSE - Toronto Stock Exchange | |
| Ovivo Inc (OVI.A) TSE - Toronto Stock Exchange | |
| Ovivo Inc (OVI.B) TSE - Toronto Stock Exchange | |
| Oex SA (OEX) WSE - Warsaw Stock Exchange | |
| Orion Investment SA (ORN) WSE - Warsaw Stock Exchange | |
| O LUXE HOLDINGS HD-,10 (MVF1) FRA - Deutsche Börse Frankfurt Stock Exchange | |
| OSISKO MINING INC. (1B7N) FRA - Deutsche Börse Frankfurt Stock Exchange | |
| OCATA THERAPEUT. DL-,001 (T2N1) FRA - Deutsche Börse Frankfurt Stock Exchange | |
| OCEAN POWER TECH. DL-,01 (RUOB) FRA - Deutsche Börse Frankfurt Stock Exchange | |
| OEM INTERNATIONAL B (OEA) FRA - Deutsche Börse Frankfurt Stock Exchange | |
| OI S.A. PFD ADR 1 (TSLB) FRA - Deutsche Börse Frankfurt Stock Exchange | |
| OLL.BARG.OUTL.HLD.DL-,001 (OL6) FRA - Deutsche Börse Frankfurt Stock Exchange | |
| OM ASSET MGMT DL -,001 (8OM) FRA - Deutsche Börse Frankfurt Stock Exchange | |
| OMIRIS AG NEUE (HBDN) FRA - Deutsche Börse Frankfurt Stock Exchange | |
| ON DECK CAP.INC. DL -,01 (2OD) FRA - Deutsche Börse Frankfurt Stock Exchange | |