13F institutional ownership facts
Institutions tracked
50
Reported value
$1,868,541,018.00
Reported shares
15,533,620
Latest filing period
Q1 2026
Top institutional holders
- Wellington Management · $10,142,247,862 · 1.89%
- Josef Lakonishok - Lsv Asset Management · $612,121,000 · 1.32%
- Charles Schwab · $5,986,904,095 · 0.91%
- Voya Investment Mgmt · $620,591,125 · 0.65%
- Jeremy Grantham - GMO · $843,687,399 · 2.16%
- Bill Nygren - Oakmark Select Fund · $1,487,618,401 · 1.98%
Data source and limitations
This page uses public SEC Form 13F disclosures and related institutional filing data. 13F reports are periodic disclosures and may not represent current real-time holdings.
13F Hub provides research and education data only. It does not provide personalized investment advice.
$MRK
Institutional Holdings
50
Top Institutions
Top Institutions
Wellington Management
84,314,971 shares
1.89%
% of Portfolio
Josef Lakonishok - Lsv Asset Management
5,088,709 shares
1.32%
% of Portfolio
Charles Schwab
49,765,225 shares
0.91%
% of Portfolio
Voya Investment Mgmt
5,159,124 shares
0.65%
% of Portfolio
Jeremy Grantham - GMO
7,013,777 shares
2.16%
% of Portfolio
Bill Nygren - Oakmark Select Fund
12,366,933 shares
1.98%
% of Portfolio
Ken Fisher - Fisher Asset Management
26,436,284 shares
1.08%
% of Portfolio
Lazard Asset Management
3,254,331 shares
0.64%
% of Portfolio
Ensign Peak Advisors
2,613,009 shares
0.59%
% of Portfolio
CalPERS
7,383,088 shares
0.55%
% of Portfolio
Legal & General
19,538,545 shares
0.54%
% of Portfolio
PNC Financial Services
7,530,441 shares
0.52%
% of Portfolio
Adage Capital Partners
2,687,439 shares
0.50%
% of Portfolio
New York State Teachers Retirement System
2,057,639 shares
0.50%
% of Portfolio
State Street Corp
119,325,673 shares
0.50%
% of Portfolio
Cliff Asness - AQR Capital Management
8,628,486 shares
0.48%
% of Portfolio
Franklin Resources
16,267,205 shares
0.48%
% of Portfolio
Larry Fink - BlackRock
225,830,330 shares
0.47%
% of Portfolio
Mitsubishi Ufj Asset Management Co., Ltd.
5,782,329 shares
0.47%
% of Portfolio
Geode Capital Management
59,558,154 shares
0.44%
% of Portfolio
Northern Trust Corp
27,090,023 shares
0.43%
% of Portfolio
Invesco
21,855,101 shares
0.40%
% of Portfolio
Robeco Institutional Asset Management
2,322,293 shares
0.40%
% of Portfolio
AllianceBernstein (AB)
11,301,486 shares
0.39%
% of Portfolio
Morgan Stanley
47,632,487 shares
0.35%
% of Portfolio
Nuveen
10,099,764 shares
0.33%
% of Portfolio
T. Rowe Price
23,042,842 shares
0.32%
% of Portfolio
Neuberger Berman
3,280,851 shares
0.30%
% of Portfolio
David Solomon - Goldman Sachs
20,133,379 shares
0.28%
% of Portfolio
Dmitry Balyasny - Balyasny Asset Management
1,812,608 shares
0.28%
% of Portfolio
David E. Shaw - D.E. Shaw & Co.
3,397,582 shares
0.25%
% of Portfolio
UBS Group
13,933,630 shares
0.25%
% of Portfolio
SG Americas Securities
1,665,520 shares
0.22%
% of Portfolio
Jennison Associates
6,249,337 shares
0.52%
% of Portfolio
Canada Pension Plan Investment Board
3,616,870 shares
0.28%
% of Portfolio
Mike Hankin - Brown Advisory INC
1,341,293 shares
0.27%
% of Portfolio
Artisan Partners
1,061,859 shares
0.20%
% of Portfolio
Janus Henderson Group
2,880,199 shares
0.17%
% of Portfolio
Jan van Eck - VanEck
1,792,705 shares
0.16%
% of Portfolio
Steve Cohen - Point72 Asset Management
921,077 shares
0.14%
% of Portfolio
BNP Paribas
2,206,233 shares
0.13%
% of Portfolio
Israel Englander - Millennium Management
1,970,691 shares
0.10%
% of Portfolio
Ken Griffin - Citadel Advisors
3,821,227 shares
0.07%
% of Portfolio
Fidelity International (FIL)
597,352 shares
0.06%
% of Portfolio
Jane Street Group
351,131 shares
0.01%
% of Portfolio
Two Sigma Investments
64,325 shares
0.01%
% of Portfolio
Capital International Investors
870,261 shares
0.02%
% of Portfolio
Rajiv Jain - Gqg Partners
53,016 shares
0.01%
% of Portfolio
Dodge & Cox
136,050 shares
0.01%
% of Portfolio
Garrett Thornburg - Thornburg Invest Mgmt
3,728,673 shares
4.66%
% of Portfolio
Institutional InsightPRO
Scale Distribution
MEGA
39%
LARGE
23%
MEDIUM
17%
SMALL
21%
Geographic Distribution
Institutional Activity
Buyers
44
Sellers
18
Holders
62
New
19
Exited
15
Insider TradingPRO
Trading Statistics
Insider Buyers
22
Insider Sellers
18
Purchase Value
$10.5M
Role Distribution
RatingPRO
74
B
Overall Score
Strong institutional support with positive momentum
Rating Dimensions
Recent Actions
New
9
Increased
23
Decreased
20
Exited
4
Total
40