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MRK
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Position history for Calamos Advisors LLC's holdings in MERCK & CO INC

Calamos Advisors LLC holds 777,663 shares of MRK (MERCK & CO INC), worth $93.5M as of 2026-Q1. The position was increased (+8.0% shares). MRK represents 0.3% of Calamos Advisors LLC's portfolio.

Current Value

$93.5M

Current Shares

777,663

Total Value Change

-$22.1M

Total Shares Change

-156,750

Quarter-by-Quarter History
QuarterActionSharesChangeValueWeightPriceConviction
2026-Q1
Latest
Increased
777,663
+8.0%
$93.5M0.3%$119.83
39
2025-Q4
Increased
719,806
+41.1%
$75.8M0.3%$106.06
47
2025-Q3
Decreased
510,200
0.0%
$42.8M0.2%$77.91
0
2025-Q2
Decreased
510,213
-23.6%
$40.4M0.2%$77.66
0
2025-Q1
Decreased
668,215
-21.6%
$60M0.3%$86.74
0
2024-Q4
Decreased
852,847
-10.6%
$84.8M0.4%$94.81
0
2024-Q3
Increased
953,704
+2.1%
$108.3M0.5%$108.70
37
2024-Q2
Decreased
934,413
-6.3%
$115.7M0.5%$117.58
0

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

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