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

Institutions by Trading Activity

Ownership Statistics

2,498,000,000Shares Outstanding

1,973,894,073Shares held by institutions

$222,181,516,857Value of institutional holdings

79.02%Institutional ownership %

2.10%Shares Changed QoQ

3,512No. 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.

These investors held 77.8% of outstanding shares in December 2025, down from 80.4% in September 2025.
They increased total shares held in Merck by 1.46% from last quarter, and the number of investors in MRK increased 0.03% annually.
Of these 3,491 funds, 1,834 grew their exposure to Merck, 1,348 cut back, and 309 maintained positions.
The aggregate institutional position in Merck amounted to 1.94Bn shares as of December 2025, up by 28.04Mn shares quarter on quarter, and down 160.56Mn shares year over year.
NEVILLE RODIE & SHAW INC is the top holder of Merck as of December 31, 2025, with 87.82K shares representing 0.0% of outstanding stock.
Leading buyers of Merck shares for the quarter ending December 2025 were Ridgewood Investments LLC (10.71K), Coastline Trust Co (9.35K), Vigilare Wealth Management (1.78K), Hilltop National Bank (796), Adelphi Trust Co (547).
The largest sellers of Merck for the quarter ending December 2025 were ROWLANDMILLER & PARTNERS.ADV (2.32K), First Financial Bank - Trust Division (2.22K), Rise Advisors, LLC (609), MJT & Associates Financial Advisory Group, Inc. (596), Investors Research Corp (367).
Business Quant data shows the 10 biggest positions in Merck as of December 2025 are held by NEVILLE RODIE & SHAW INC (87.82K), ROWLANDMILLER & PARTNERS.ADV (37.03K), Coastline Trust Co (33.78K), First Financial Bank - Trust Division (26.08K), First County Bank /CT/ (18.94K), LVM CAPITAL MANAGEMENT LTD/MI (12.14K), Adelphi Trust Co (11.52K), Hilltop National Bank (11.2K), Ridgewood Investments LLC (10.71K), Hickory Point Bank & Trust (10.08K).

3,512 Institutional Holders

1,973,894,073 Total Shares Held

Rows:

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Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
VANGUARD GROUP INC	31 Dec, 2025	254,322,763	2,185,853	0.87%	$26,770,014,033.00
BlackRock, Inc.	31 Dec, 2025	219,095,465	4,218,865	1.96%	$23,061,988,586.00
State Street Corp	31 Dec, 2025	120,040,168	1,859,990	1.57%	$12,737,503,943.00
WELLINGTON MANAGEMENT GROUP LLP	31 Dec, 2025	86,435,458	11,156,354	14.82%	$9,098,196,310.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	60,047,984	249,110	0.42%	$6,307,571,859.00
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	31 Dec, 2025	48,563,804	-5,135,656	-9.56%	$5,111,826,930.00
Morgan Stanley	31 Dec, 2025	44,946,021	359,486	0.81%	$4,731,018,465.00
FMR LLC	31 Dec, 2025	40,836,566	7,409,816	22.17%	$4,298,456,848.00
Goldman Sachs Group Inc	31 Dec, 2025	38,693,394	23,672,027	157.59%	$4,072,866,528.00
NORGES BANK	31 Dec, 2025	37,981,502	37,981,502	0.00%	$3,997,932,901.00
Jpmorgan Chase & Co	31 Dec, 2025	29,199,978	-41,203,316	-58.52%	$3,073,589,831.00
Bank Of America Corp /De/	31 Dec, 2025	27,854,441	-25,044,431	-47.34%	$2,931,958,400.00
Northern Trust Corp	31 Dec, 2025	27,234,642	-698,499	-2.50%	$2,866,718,416.00
Fisher Asset Management, LLC	31 Dec, 2025	24,873,327	805,201	3.35%	$2,618,166,478.00
Invesco Ltd.	31 Dec, 2025	20,546,185	701,249	3.53%	$2,162,691,447.00
Legal & General Group Plc	31 Dec, 2025	19,776,842	-882,315	-4.27%	$2,081,710,387.00
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	31 Dec, 2025	19,433,403	-316,462	-1.60%	$2,045,560,000.00
UBS Group AG	31 Dec, 2025	19,178,272	2,272,264	13.44%	$2,018,704,911.00
Bank of New York Mellon Corp	31 Dec, 2025	19,164,526	-2,629,828	-12.07%	$2,017,257,973.00
HSBC HOLDINGS PLC	31 Dec, 2025	16,150,898	7,763,040	92.55%	$1,701,096,834.00

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