| Nom | Code | Valeur | Code ISIN |
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| OMX COPENHAGEN CAP_GI | OMXCCAPGI | Indice | |
| OMX_COPENHAGEN_MID_CAP_GI | OMXCMCGI | Indice | SE0001776683 |
| OMX_COPENHAGEN_MID_CAP_PI | OMXCMCPI | Indice | SE0001776675 |
| OMX_COPENHAGEN_MID_CAP_PLUS_PI | OMXCMCPLUSPI | Indice | |
| OMX STOCKHOLM BENCHMARK CAP_PI | OMXSBCAPPI | Indice | SE0000744229 |
| OMX STOCKHOLM BENCHMARK_GI | OMXSBGI | Indice | SE0000744211 |
| ONE MEDIA HOLDING NPV | ONE | Action | SE0001096140 |
| ORASOLV AB | OS | Action | SE0001183732 |
| ORC SOFTWARE AB | ORC | Action | SE0000634321 |
| ORIFLAME COSMETICS S.A\, SDB | ORI-SDB | Action | SE0001174889 |
| ORION B + ORIOLA B | ORIONBASKET | Indice | |
| ORION CORPORATION B | ORNBV | Action | FI0009014377 |