MRK holders · CITADEL ADVISORS LLC 13F · MRK stock
CITADEL ADVISORS LLC Merck & Company Inc (MRK) 13F holding
CITADEL ADVISORS LLC reported 5,551,800 MRK shares valued at $667.83B as of 2026-03-31 (COM), Call. Cached 13F row, not a live tape.
| Report | Shares | Value | Class |
|---|---|---|---|
| 2026-03-31 | 5,551,800 | $667.83B | Call |
| 2026-03-31 | 3,768,613 | $453.33B | COM |
| 2026-03-31 | 3,743,200 | $450.27B | Put |
| 2026-03-31 | 52,614 | $6.33B | COM |
| 2025-12-31 | 6,430,627 | $676.89B | COM |
| 2025-12-31 | 3,900,600 | $410.58B | Put |
| 2025-12-31 | 3,377,900 | $355.56B | Call |
| 2025-12-31 | 390,704 | $41.13B | COM |
| 2025-09-30 | 5,909,700 | $496.00B | Call |
| 2025-09-30 | 3,867,900 | $324.63B | Put |
| 2025-09-30 | 660,361 | $55.42B | COM |
| 2025-09-30 | 307,693 | $25.82B | COM |
| 2025-09-30 | 17,500 | $1.47B | Put |
| 2025-09-30 | 7,800 | $654.7M | Call |
| 2025-06-30 | 5,820,900 | $460.78B | Call |
| 2025-06-30 | 4,427,500 | $350.48B | Put |
| 2025-06-30 | 36,600 | $2.90B | Call |
| 2025-06-30 | 18,400 | $1.46B | Put |
Not investment advice. Cached 13F row, not EDGAR XML.