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BLAIR WILLIAM & CO/IL

Position in MRK — Merck & Co., Inc.

CIK 902367 CHICAGO, IL

Position in MRK

as of Jun 30, 2026 · filed Aug 11, 2026
Position Value
$118,311,877
+$9,835,679 QoQ
Shares Held
920,715
+2.1% QoQ
Ownership
0.037%
of shares outstanding
% of Portfolio
0.36%
of 13F equity value
Holder Rank
#193
of 3,769 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority Sole 88% Shared 0% None 12%

Common Shares in MRK Over Time

Shares Held

Position Value (USD)

Position in Drug Manufacturers - General

Healthcare · as of Jun 30, 2026

BLAIR WILLIAM & CO/IL holds $1,296,853,654 across 14 Drug Manufacturers - General names. MRK ranks #4 (9.1% of the industry book) .

# Ticker Company Shares Value (USD) Open
4 MRK
Merck & Co., Inc.
This page
920,715 $118,311,877

All Filings in MRK

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26 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $118,311,877 920,715
2026-03-31 $108,476,198 901,789
2025-12-31 $87,789,366 834,024
2025-09-30 $68,181,878 812,366
2025-06-30 $69,064,487 872,467
2025-03-31 $84,499,974 941,399
2024-12-31 $100,371,639 1,008,963
2024-09-30 $113,824,481 1,002,329
2024-06-30 $123,647,849 998,771
2024-03-31 $97,382,926 738,029
2023-12-31 $80,425,798 737,716
2023-09-30 $74,391,155 722,595
2023-06-30 $82,885,444 718,307
2023-03-31 $74,672,162 701,872
2022-12-31 $77,176,487 695,597
2022-09-30 $59,003,912 685,136
2022-06-30 $58,506,341 641,728
2022-03-31 $52,453,908 639,292
2021-12-31 $55,464,368 723,700
2021-09-30 $51,174,696 681,330
2021-06-30 $48,708,673 626,317
2021-03-31 $49,054,089 636,322
2020-12-31 $54,542,579 666,780
2020-09-30 $48,691,755 587,001
2020-06-30 $39,389,057 509,363
2020-03-31 $37,656,805 489,431