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MRK
8 quarters

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

Quarter-by-Quarter History
QuarterActionSharesChangeValueWeightPriceConviction
2026-Q1
Latest
Decreased
3.8M
-44.0%
$459.7M0.1%$119.83
0
2025-Q4
Increased
6.8M
+604.6%
$718M0.1%$106.06
61
2025-Q3
New
968,054
-
$81.2M0.0%$77.91
41
2025-Q2
Exited
0
-100.0%
$00.0%$77.66
0
2025-Q1
Decreased
2M
-61.2%
$183.9M0.0%$86.74
0
2024-Q4
Decreased
5.3M
-25.0%
$525.4M0.1%$94.81
0
2024-Q3
Decreased
7M
-14.6%
$799.7M0.2%$108.70
0
2024-Q2
Increased
8.2M
+8.8%
$1B0.2%$117.58
42

Other major holders of MRK: VANGUARD GROUP INC, BlackRock Finance, Inc., BlackRock, Inc.

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