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LOOMIS SAYLES & CO L P

Position in MRK — Merck & Co., Inc.

CIK 312348 BOSTON, MA

Position in MRK

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$7,519,048
-$1,463,126 QoQ
Shares Held
58,514
-21.6% QoQ
Ownership
0.002%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#855
of 3,769 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 93% Shared 0% None 7%

Common Shares in MRK Over Time

Shares Held

Position Value (USD)

Position in Drug Manufacturers - General

Healthcare · as of Jun 30, 2026

LOOMIS SAYLES & CO L P holds $1,754,958,212 across 10 Drug Manufacturers - General names. MRK ranks #5 (0.4% of the industry book) .

# Ticker Company Shares Value (USD) Open
5 MRK
Merck & Co., Inc.
This page
58,514 $7,519,048

All Filings in MRK

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26 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $7,519,048 58,514
2026-03-31 $8,982,174 74,671
2025-12-31 $16,347,930 155,310
2025-09-30 $17,584,257 209,511
2025-06-30 $18,332,822 231,592
2025-03-31 $16,370,607 182,382
2024-12-31 $18,624,545 187,219
2024-09-30 $14,924,509 131,424
2024-06-30 $9,276,209 74,929
2024-03-31 $4,904,052 37,166
2023-12-31 $4,575,786 41,972
2023-09-30 $912,342 8,862
2023-06-30 $1,321,099 11,449
2023-03-31 $4,941,708 46,449
2022-12-31 $5,530,080 49,843
2022-09-30 $4,193,698 48,696
2022-06-30 $34,069,408 373,691
2022-03-31 $49,175,271 599,333
2021-12-31 $31,641,359 412,857
2021-09-30 $44,143,498 587,718
2021-06-30 $41,267,483 530,635
2021-03-31 $46,217,946 599,532
2020-12-31 $11,476,943 140,305
2020-09-30 $1,111,032 13,394
2020-06-30 $1,115,098 14,420
2020-03-31 $429,822,283 5,586,463