| Titolo | % | Ultimo | Ora | Apertura | Minimo | Massimo | Volumi |
| O'Reilly Auto | INV. | --- | --- | --- | --- | --- | --- |
| Occidental Petroleum | +0,31% | 35,595 | 12:46 | 35,55 | 35,5 | 35,595 | 42 |
| Oesterreichische | INV. | 30,45 | 07/04/2025 | --- | --- | --- | --- |
| Officina Stellare | -1,32% | 14,9 | 14:12 | 14,9 | 14,9 | 14,9 | 250 |
| Okta Inc | INV. | --- | --- | --- | --- | --- | --- |
| Old Dominion | INV. | --- | --- | --- | --- | --- | --- |
| Old National Bancorp | INV. | --- | --- | --- | --- | --- | --- |
| Olidata | -1,73% | 1,99 | 13:45 | 2,06 | 1,99 | 2,06 | 12.908 |
| Olidata | INV. | --- | --- | --- | --- | --- | --- |
| Ollie's Bargain Outlet Holdi | INV. | --- | --- | --- | --- | --- | --- |
| Omer | -1,35% | 4,38 | 10:46 | 4,21 | 4,21 | 4,5 | 771 |
| Omnicom Group Inc | INV. | --- | --- | --- | --- | --- | --- |
| OMV | INV. | 44,6 | 24/04/2025 | --- | --- | --- | --- |
| On Semiconductor | -1,43% | 33,86 | 15:06 | 33,86 | 33,86 | 33,86 | 222 |
| Oneok | INV. | 85,57 | 03/04/2025 | --- | --- | --- | --- |
| Opendoor Technologies Inc | INV. | --- | --- | --- | --- | --- | --- |
| Option Care Health Inc | INV. | --- | --- | --- | --- | --- | --- |
| Oracle | +1,18% | 123 | 12:48 | 123 | 123 | 123 | 1 |
| Orange | -0,08% | 12,4 | 15:05 | 12,4 | 12,37 | 12,4 | 2.910 |
| Organon & Co | INV. | 10,245 | 24/04/2025 | --- | --- | --- | --- |
| Orion Class B | INV. | 51,9 | 18/02/2025 | --- | --- | --- | --- |
| Orsero | -0,15% | 12,94 | 15:58 | 12,96 | 12,82 | 13,08 | 19.372 |
| Osai Automation System | +0,51% | 0,197 | 14:43 | 0,198 | 0,196 | 0,198 | 24.700 |
| Otis Worldwide | INV. | --- | --- | --- | --- | --- | --- |
| Outokumpu Oyj | INV. | --- | --- | --- | --- | --- | --- |
| OVS | INV. | 3,174 | 15:59 | 3,164 | 3,158 | 3,218 | 331.765 |