Merck & Co., Inc. (MRK) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

0Shares Outstanding

20,446,969Shares held by institutions

$2,415,604,918Value of institutional holdings

79.65%Institutional ownership %

-0.45%Shares Changed QoQ

3,244No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Merck & Co., Inc. (NYSE:MRK) showed up in the 13F filings of 3,491 institutional investors as of December 2025.

They owned 77.8% of outstanding stock in December 2025, down from 80.4% the prior quarter.
They increased total shares held in Merck by 1.46% from the prior quarter, while the number of investors in MRK increased 0.03% year over year.
During the quarter, 1,834 of these 3,491 funds increased positions in MRK, 1,348 reduced exposure, and 309 held steady.
Altogether, these fund groups held 1.94Bn shares in MRK by December 2025, up by 28.04Mn shares quarter on quarter, and down 160.56Mn shares year over year.
VANGUARD GROUP INC is the top holder of Merck as of December 31, 2025, with 254.32Mn shares representing 10.18% of outstanding stock.
The biggest buyers of Merck for the quarter ending December 2025 included NORGES BANK (37.98Mn), WELLINGTON MANAGEMENT GROUP LLP (11.16Mn), Cardano Risk Management B.V. (9.62Mn), FMR LLC (7.41Mn), Swedbank AB (6.96Mn).
The largest sellers of Merck for the quarter ending December 2025 were Jpmorgan Chase & Co (41.2Mn), Bank Of America Corp /De/ (25.04Mn), ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (8.76Mn), CHARLES SCHWAB INVESTMENT MANAGEMENT INC (5.14Mn), Assenagon Asset Management S.A. (4.96Mn).
Per Business Quant data, the top 10 holders of Merck for the quarter ending December 2025 are VANGUARD GROUP INC (254.32Mn), BlackRock, Inc. (219.1Mn), State Street Corp (120.04Mn), WELLINGTON MANAGEMENT GROUP LLP (86.44Mn), GEODE CAPITAL MANAGEMENT, LLC (60.05Mn), CHARLES SCHWAB INVESTMENT MANAGEMENT INC (48.56Mn), Morgan Stanley (44.95Mn), FMR LLC (40.84Mn), NORGES BANK (37.98Mn), Jpmorgan Chase & Co (29.2Mn).

3,502 Institutional Holders

20,446,969 Total Shares Held

Rows:

Download Data

Owner Name	Date	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	4,218,865	1.96%	$0.00
VANGUARD GROUP INC	31 Dec, 2025	2,185,853	0.87%	$0.00
UBS Group AG	31 Dec, 2025	2,272,264	13.44%	$0.00
HSBC HOLDINGS PLC	31 Dec, 2025	7,763,040	92.55%	$0.00
Larry Mathis Financial Planning, LLC	31 Dec, 2025	9,052	0.00%	$0.00
State Street Corp	31 Dec, 2025	1,859,990	1.57%	$0.00
Cardano Risk Management B.V.	31 Dec, 2025	9,619,320	0.00%	$0.00
Barclays Plc	31 Dec, 2025	-9,626,776	-66.85%	$0.00
WELLINGTON MANAGEMENT GROUP LLP	31 Dec, 2025	11,156,354	14.82%	$0.00
Corient Private Wealth LLC	31 Dec, 2025	5,216,722	214.94%	$0.00
Rockefeller Capital Management L.P.	31 Dec, 2025	2,168,344	167.73%	$0.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	249,110	0.42%	$0.00
Nuveen, LLC	31 Dec, 2025	49,959	0.72%	$0.00
Employees Provident Fund Board	31 Dec, 2025	61,000	2.59%	$0.00
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	31 Dec, 2025	-5,135,656	-9.56%	$0.00
National Pension Service	31 Dec, 2025	82,039	1.44%	$0.00
Danica Pension, Livsforsikringsaktieselskab	31 Dec, 2025	-79,071	-29.18%	$0.00
Morgan Stanley	31 Dec, 2025	359,486	0.81%	$0.00
Aberdeen Group plc	31 Dec, 2025	171,379	3.83%	$0.00
World Investment Advisors	31 Dec, 2025	107,821	159.29%	$0.00

1 - 20 of 3,502

Research Tools