Position history for CITADEL ADVISORS LLC's holdings in MERCK & CO INC
CITADEL ADVISORS LLC holds 3.8M shares of MRK (MERCK & CO INC), worth $459.7M as of 2026-Q1. The position was decreased (-44.0% shares). MRK represents 0.1% of CITADEL ADVISORS LLC's portfolio.
Current Value
$459.7M
Current Shares
3.8M
Total Value Change
-$560.7M
Total Shares Change
-4.4M
Other major holders of MRK: UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC
Decreased |
| 3.8M |
-44.0% |
| $459.7M |
| 0.1% |
| $119.83 |
0 |
| 2025-Q4 | Increased | 6.8M | +604.6% | $718M | 0.1% | $106.06 | 61 |
| 2025-Q3 | New | 968,054 | - | $81.2M | 0.0% | $77.91 | 41 |
| 2025-Q2 | Exited | 0 | -100.0% | $0 | 0.0% | $77.66 | 0 |
| 2025-Q1 | Decreased | 2M | -61.2% | $183.9M | 0.0% | $86.74 | 0 |
| 2024-Q4 | Decreased | 5.3M | -25.0% | $525.4M | 0.1% | $94.81 | 0 |
| 2024-Q3 | Decreased | 7M | -14.6% | $799.7M | 0.2% | $108.70 | 0 |
| 2024-Q2 | Increased | 8.2M | +8.8% | $1B | 0.2% | $117.58 | 42 |