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UBS Oconnor LLC

SEC CIK
0001132716
Latest filing
Aug 14, 2026

MRK holding history

Merck & Co., Inc. in every 13F filed by UBS Oconnor LLC, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

MRK overviewAll 13F holders of MRKFull Q4 2025 holdings

Shares (Q4 2023)
0
Sold out in Q4 2023
Value
$0
% of portfolio
0.0%
Quarters held
4
Since Q3 2022
Holdings of MRK by UBS Oconnor LLC, by quarter
QuarterSharesValue% of portfolioShare changeActionAll holders
Q4 20230$00.0%−5,790−100.0%Sold outHolders
Q3 20235,790$596.1K<0.1%00.0%UnchangedHolders
Q2 20235,790$668.1K<0.1%−12,074−67.6%ReducedHolders
Q1 202317,864$1.90M<0.1%+17,864NewHolders
Q4 20220$00.0%−22,800−100.0%Sold outHolders
Q3 202222,800$1.96M<0.1%+22,800NewHolders