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

Institutions by Trading Activity

Ownership Statistics

2,514,398,943Shares Outstanding

29,487,197Shares held by institutions

$3,584,758,539Value of institutional holdings

75.26%Institutional ownership %

4.34%Shares Changed QoQ

3,383No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Recent 13F filings as of December 2025 show that 3383 institutional investors hold a position in Merck & Co., Inc. (NYSE:MRK).

The collective stake of institutional investors in Merck moved to 75.3% in December 2025, a shift down from the 77.6% reported for September 2025.
The company experienced a 4.34% quarterly change in institutional shares held, alongside a decrease of 3.45% in total owners annually.
Of these 3383 institutional investors, 1763 increased their holdings in Merck, while 1303 of them reduced positions, and 317 investors maintained their exposure.
The aggregate institutional position in Merck now stands at 1.89Bn shares as of December 2025, after investors increased their holdings (up by 78.79Mn shares quarter on quarter which is down 73.79Mn shares year over year).
The top institutional stake in Merck as of December 31, 2025 belongs to VANGUARD GROUP INC, which owns 254.32Mn shares, or 10.11% of the company.
Among the most significant buyers of Merck during December 2025 were NORGES BANK (37.98Mn), WELLINGTON MANAGEMENT GROUP LLP (11.16Mn), Cardano Risk Management B.V. (9.62Mn), FMR LLC (7.41Mn), CITADEL ADVISORS LLC (5.85Mn).
Leading sellers of Merck stock in December 2025 included ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (8.76Mn), JPMORGAN CHASE & CO (6.00Mn), CHARLES SCHWAB INVESTMENT MANAGEMENT INC (5.14Mn), Assenagon Asset Management S.A. (4.96Mn), Clearbridge Investments, LLC (4.37Mn).
The top 10 institutional holders of Merck for the quarter ending December 2025 included VANGUARD GROUP INC (254.32Mn), BlackRock, Inc. (219.10Mn), 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 (29.20Mn).

3,383 Institutional Holders

29,487,197 Total Shares Held

Rows:

Download Data

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
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	-6,001,669	-17.05%	$3,073,589,831.00
BANK OF AMERICA CORP /DE/	31 Dec, 2025	27,854,441	1,405,005	5.31%	$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
GOLDMAN SACHS GROUP INC	31 Dec, 2025	20,681,476	5,525,709	36.46%	$2,176,932,098.00
UBS Group AG	31 Dec, 2025	20,100,172	3,194,164	18.89%	$2,115,744,105.00
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
Bank of New York Mellon Corp	31 Dec, 2025	19,164,526	-2,629,828	-12.07%	$2,017,257,973.00
FRANKLIN RESOURCES INC	31 Dec, 2025	16,064,050	-682,940	-4.08%	$1,690,901,822.00
AMERIPRISE FINANCIAL INC	31 Dec, 2025	15,974,409	40,500	0.25%	$1,683,102,538.00

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