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Chesley Taft & Associates LLC

Position in MRK — Merck & Co., Inc.

CIK 1164632 CHICAGO, IL

Position in MRK

as of Jun 30, 2026 · filed Jul 8, 2026
Position Value
$7,171,585
+$94,565 QoQ
Shares Held
55,810
-5.1% QoQ
Ownership
0.002%
of shares outstanding
% of Portfolio
0.38%
of 13F equity value
Holder Rank
#875
of 3,769 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 94% Shared 0% None 6%

Common Shares in MRK Over Time

Shares Held

Position Value (USD)

Position in Drug Manufacturers - General

Healthcare · as of Jun 30, 2026

Chesley Taft & Associates LLC holds $123,067,788 across 10 Drug Manufacturers - General names. MRK ranks #4 (5.8% of the industry book) .

# Ticker Company Shares Value (USD) Open
4 MRK
Merck & Co., Inc.
This page
55,810 $7,171,585

All Filings in MRK

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26 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $7,171,585 55,810
2026-03-31 $7,077,020 58,833
2025-12-31 $6,366,650 60,485
2025-09-30 $4,638,978 55,272
2025-06-30 $4,622,785 58,398
2025-03-31 $5,465,306 60,888
2024-12-31 $6,053,656 60,853
2024-09-30 $7,477,585 65,847
2024-06-30 $8,175,380 66,037
2024-03-31 $8,025,462 60,822
2023-12-31 $5,951,074 54,587
2023-09-30 $5,719,799 55,559
2023-06-30 $6,449,031 55,889
2023-03-31 $6,011,460 56,504
2022-12-31 $6,246,485 56,300
2022-09-30 $4,782,243 55,530
2022-06-30 $5,082,089 55,743
2022-03-31 $4,561,980 55,600
2021-12-31 $4,738,651 61,830
2021-09-30 $4,319,576 57,510
2021-06-30 $4,453,110 57,260
2021-03-31 $4,437,688 57,565
2020-12-31 $4,672,004 57,115
2020-09-30 $4,775,018 57,565
2020-06-30 $4,962,577 64,174
2020-03-31 $6,566,518 85,346