Merck & Co., Inc. (MRK) — Institutional Holders, Q2 2026

3,866 institutional investment managers reported a MRK position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $253.7B. Every filer is listed below, ranked by position value, 100 per page; this page shows ranks 1 to 100. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.

← MRK stock profile

MRK in Q2 2026: what funds did

Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.

New positions

166

Added to

1,637

Trimmed

1,501

Sold out

119

Biggest buyers

Capital International InvestorsAdded · +14,516,428 sh+$1.9B
Fisher Asset ManagementAdded · +12,079,979 sh+$1.6B
CHARLES SCHWAB INVESTMENT MANAGEMENTAdded · +4,600,064 sh+$591.1M
FRANKLIN RESOURCESAdded · +3,281,380 sh+$421.7M
DIMENSIONAL FUND ADVISORSAdded · +2,030,447 sh+$260.9M

Biggest sellers

JPMORGAN CHASETrimmed · -9,086,563 sh-$1.2B
NORDEA INVESTMENT MANAGEMENT ABTrimmed · -5,024,243 sh-$645.6M
PRICE T ROWE ASSOCIATESTrimmed · -4,524,046 sh-$581.3M
JENNISON ASSOCIATESTrimmed · -3,520,379 sh-$452.4M
Invesco Ltd.Trimmed · -3,243,930 sh-$416.8M

MRK 13F holders ranked 1–100 of 3,866

Institutional investors reporting a position in Merck & Co., Inc. on SEC Form 13F-HR for Q2 2026, ranked by reported value.
#	Institution	Shares	Value	% of portfolio	QoQShares vs Q1 2026
1	BlackRock#1 · 226,999,837 sh	226,999,837	$29.2B	0.43%	+0.5%
2	VANGUARD CAPITAL MANAGEMENT#2 · 161,323,174 sh	161,323,174	$20.7B	0.44%	+0.2%
3	STATE STREET#3 · 120,413,256 sh	120,413,256	$15.6B	0.46%	+0.9%
4	WELLINGTON MANAGEMENT GROUP LLP#4 · 86,249,283 sh	86,249,283	$11.1B	1.91%	+2.3%
5	VANGUARD PORTFOLIO MANAGEMENT#5 · 67,738,969 sh	67,738,969	$8.7B	0.39%	+0.6%
6	GEODE CAPITAL MANAGEMENT#6 · 60,744,214 sh	60,744,214	$7.8B	0.42%	+2.0%
7	CHARLES SCHWAB INVESTMENT MANAGEMENT#7 · 54,365,289 sh	54,365,289	$7.0B	0.93%	+9.2%
8	MORGAN STANLEY#8 · 48,641,158 sh	48,641,158	$6.3B	0.33%	+2.1%
9	FMR#9 · 45,440,355 sh	45,440,355	$5.8B	0.25%	+2.1%
10	JPMORGAN CHASE#10 · 43,886,420 sh	43,886,420	$5.7B	0.31%	-17.2%
11	Fisher Asset Management#11 · 38,516,263 sh	38,516,263	$4.9B	1.47%	+45.7%
12	NORGES BANK#12 · 36,983,784 sh	36,983,784	$4.8B	0.47%	—
13	BANK OF AMERICA#13 · 30,535,208 sh	30,535,208	$3.9B	0.25%	-0.8%
14	NORTHERN#14 · 26,275,718 sh	26,275,718	$3.4B	0.39%	-3.0%
15	GOLDMAN SACHS GROUP#15 · 22,075,139 sh	22,075,139	$2.8B	0.25%	+9.6%
16	FRANKLIN RESOURCES#16 · 19,548,585 sh	19,548,585	$2.5B	0.54%	+20.2%
17	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME#17 · 19,547,171 sh	19,547,171	$2.5B	0.46%	-4.3%
18	Legal & General Group Plc#18 · 18,873,343 sh	18,873,343	$2.4B	0.51%	-3.4%
19	Invesco Ltd.#19 · 18,611,171 sh	18,611,171	$2.4B	0.19%	-14.8%
20	PRICE T ROWE ASSOCIATES#20 · 18,518,796 sh	18,518,796	$2.4B	0.24%	-19.6%
21	Bank of New York Mellon#21 · 18,340,173 sh	18,340,173	$2.4B	0.39%	-2.0%
22	DIMENSIONAL FUND ADVISORS#22 · 17,486,486 sh	17,486,486	$2.2B	0.41%	+13.1%
23	AMERIPRISE FINANCIAL#23 · 17,387,435 sh	17,387,435	$2.2B	0.45%	+6.9%
24	Capital International Investors#24 · 15,386,689 sh	15,386,689	$2.0B	0.41%	+1668.1%
25	ROYAL BANK OF CANADA#25 · 14,293,086 sh	14,293,086	$1.8B	0.27%	+8.3%
26	VANGUARD FIDUCIARY#26 · 13,869,309 sh	13,869,309	$1.8B	0.39%	-0.7%
27	STATE FARM MUTUAL AUTOMOBILE INSURANCE#27 · 13,794,969 sh	13,794,969	$1.8B	1.21%	0.0%
28	UBS Group AG#28 · 13,744,783 sh	13,744,783	$1.8B	0.22%	-1.4%
29	Amundi#29 · 12,342,274 sh	12,342,274	$1.6B	0.38%	-10.3%
30	ALLIANCEBERNSTEIN L.P.#30 · 13,131,942 sh	13,131,942	$1.6B	0.52%	+16.2%
31	HARRIS ASSOCIATES L P#31 · 12,073,109 sh	12,073,109	$1.6B	2.06%	-2.4%
32	DEUTSCHE BANK AG\#32 · 11,964,180 sh	11,964,180	$1.5B	0.45%	-4.6%
33	WELLS FARGO & COMPANY#33 · 11,658,434 sh	11,658,434	$1.5B	0.24%	+1.8%
34	Nuveen#34 · 9,662,399 sh	9,662,399	$1.2B	0.30%	-4.3%
35	STIFEL FINANCIAL#35 · 8,169,394 sh	8,169,394	$1.0B	0.87%	-1.5%
36	AQR CAPITAL MANAGEMENT#36 · 8,134,262 sh	8,134,262	$1.0B	0.36%	-5.7%
37	HSBC PLC#37 · 7,734,965 sh	7,734,965	$994.1M	0.42%	+1.3%
38	BARROW HANLEY MEWHINNEY & STRAUSS#38 · 7,331,418 sh	7,331,418	$942.1M	2.86%	-7.4%
39	PNC FINANCIAL SERVICES GROUP#39 · 7,286,803 sh	7,286,803	$936.4M	0.46%	-3.2%
40	Swiss National Bank#40 · 6,973,251 sh	6,973,251	$896.1M	0.47%	-4.3%
41	BARCLAYS PLC#41 · 6,793,897 sh	6,793,897	$873.0M	0.17%	-10.1%
42	Grantham, Mayo, Van Otterloo#42 · 6,785,008 sh	6,785,008	$871.9M	1.96%	-3.3%
43	Aristotle Capital Management#43 · 6,578,570 sh	6,578,570	$845.4M	1.77%	-4.6%
44	VOYA INVESTMENT MANAGEMENT#44 · 6,484,756 sh	6,484,756	$833.3M	0.72%	+25.7%
45	Swedbank AB#45 · 6,360,649 sh	6,360,649	$817.3M	0.70%	-10.3%
46	RAYMOND JAMES FINANCIAL#46 · 6,236,773 sh	6,236,773	$801.4M	0.22%	-5.3%
47	Mitsubishi UFJ Asset Management , Ltd.#47 · 6,184,340 sh	6,184,340	$794.6M	0.44%	+7.0%
48	Sumitomo Mitsui#48 · 6,169,107 sh	6,169,107	$792.7M	0.45%	-1.6%
49	National Pension Service#49 · 5,791,782 sh	5,791,782	$744.2M	0.48%	+0.5%
50	VANGUARD ASSET MANAGEMENT, Ltd#50 · 5,593,255 sh	5,593,255	$718.7M	0.49%	+11.8%
51	BANK OF MONTREAL#51 · 5,565,728 sh	5,565,728	$715.2M	0.24%	+15.2%
52	Vanguard Global Advisers#52 · 5,512,538 sh	5,512,538	$708.4M	0.33%	-1.3%
53	CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM#53 · 5,398,744 sh	5,398,744	$693.7M	0.39%	-26.9%
54	LSV ASSET MANAGEMENT#54 · 5,299,408 sh	5,299,408	$681.0M	1.24%	+4.1%
55	DekaBank Deutsche Girozentrale#55 · 5,427,912 sh	5,427,912	$638.7M	1.08%	0.0%
56	AMERICAN CENTURY COMPANIES#56 · 4,865,967 sh	4,865,967	$625.3M	0.28%	-12.3%
57	PRINCIPAL FINANCIAL GROUP#57 · 4,751,479 sh	4,751,479	$610.6M	0.30%	+0.9%
58	Capital Wealth Planning#58 · 4,708,599 sh	4,708,599	$605.1M	3.02%	+4.2%
59	CAISSE DE DEPOT ET PLACEMENT DU QUEBEC#59 · 4,448,107 sh	4,448,107	$571.6M	0.81%	+17.1%
60	abrdn plc#60 · 4,309,756 sh	4,309,756	$553.8M	0.78%	-7.6%
61	CANADA PENSION PLAN INVESTMENT BOARD#61 · 4,176,604 sh	4,176,604	$536.7M	0.30%	+15.5%
62	VICTORY CAPITAL MANAGEMENT#62 · 4,143,885 sh	4,143,885	$532.5M	0.30%	+9.3%
63	ENVESTNET ASSET MANAGEMENT#63 · 3,996,890 sh	3,996,890	$513.6M	0.12%	+3.7%
64	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP#64 · 3,966,523 sh	3,966,523	$509.7M	0.23%	+35.1%
65	Jupiter Topco#65 · 3,901,539 sh	3,901,539	$501.2M	0.20%	—
66	LPL Financial#66 · 3,836,733 sh	3,836,733	$493.0M	0.11%	+1.4%
67	RHUMBLINE ADVISERS#67 · 3,809,518 sh	3,809,518	$489.5M	0.37%	+0.3%
68	THORNBURG INVESTMENT MANAGEMENT#68 · 3,787,976 sh	3,787,976	$486.8M	4.66%	+1.6%
69	Bank Julius Baer & Ltd, Zurich#69 · 3,729,950 sh	3,729,950	$480.3M	1.24%	+0.8%
70	ACADIAN ASSET MANAGEMENT#70 · 3,695,329 sh	3,695,329	$474.8M	0.56%	-12.1%
71	HighTower Advisors#71 · 3,679,920 sh	3,679,920	$472.9M	0.46%	+1.2%
72	CITIGROUP#72 · 3,614,905 sh	3,614,905	$464.5M	0.15%	+30.1%
73	Neuberger Berman Group#73 · 3,533,955 sh	3,533,955	$454.2M	0.30%	+7.7%
74	Allianz Asset Management GmbH#74 · 3,713,343 sh	3,713,343	$448.6M	0.40%	-6.3%
75	NORDEA INVESTMENT MANAGEMENT AB#75 · 3,503,750 sh	3,503,750	$445.1M	0.36%	-58.9%
76	Ensign Peak Advisors#76 · 3,364,831 sh	3,364,831	$432.4M	0.71%	+28.8%
77	AVIVA PLC#77 · 3,264,106 sh	3,264,106	$419.4M	0.62%	+0.9%
78	BNP PARIBAS FINANCIAL MARKETS#78 · 3,130,937 sh	3,130,937	$402.3M	0.14%	+41.9%
79	SG Americas Securities#79 · 3,072,242 sh	3,072,242	$394.8M	0.22%	+84.5%
80	ROYAL LONDON ASSET MANAGEMENT LTD#80 · 2,987,037 sh	2,987,037	$383.8M	0.71%	+3.1%
81	NEW YORK STATE COMMON RETIREMENT FUND#81 · 2,909,819 sh	2,909,819	$373.9M	0.47%	-17.2%
82	NATIXIS ADVISORS#82 · 2,857,628 sh	2,857,628	$367.2M	0.41%	-3.8%
83	FEDERATED HERMES#83 · 2,852,266 sh	2,852,266	$366.5M	0.53%	-5.2%
84	GREAT WEST LIFE ASSURANCE#84 · 2,816,256 sh	2,816,256	$361.1M	0.58%	-5.3%
85	Mariner#85 · 2,781,786 sh	2,781,786	$357.5M	0.38%	-0.5%
86	D. E. Shaw#86 · 2,738,023 sh	2,738,023	$351.8M	0.17%	-19.4%
87	JENNISON ASSOCIATES#87 · 2,728,958 sh	2,728,958	$350.7M	0.21%	-56.3%
88	Assenagon Asset Management S.A.#88 · 2,702,992 sh	2,702,992	$347.3M	—	+263.7%
89	FIRST ADVISORS#89 · 2,591,856 sh	2,591,856	$333.1M	0.20%	-42.0%
90	Russell Investments Group, Ltd.#90 · 2,578,024 sh	2,578,024	$331.9M	0.29%	+2.0%
91	BNP Paribas Asset Management Holding S.A.#91 · 2,581,691 sh	2,581,691	$331.8M	0.33%	+11.5%
92	JONES FINANCIAL COMPANIES LLLP#92 · 2,548,737 sh	2,548,737	$327.9M	0.13%	-4.2%
93	Alyeska Investment Group, L.P.#93 · 2,480,590 sh	2,480,590	$318.8M	0.82%	+7.6%
94	SCHRODER INVESTMENT MANAGEMENT GROUP#94 · 2,455,664 sh	2,455,664	$315.6M	0.22%	+39.8%
95	NATIONAL BANK OF CANADA#95 · 2,433,801 sh	2,433,801	$312.7M	0.22%	+24.1%
96	Eurizon Capital SGR S.p.A.#96 · 2,398,834 sh	2,398,834	$308.7M	0.83%	-15.0%
97	Corient Private Wealth#97 · 2,391,313 sh	2,391,313	$307.3M	0.43%	-1.5%
98	Robeco Institutional Asset Management B.V.#98 · 2,373,993 sh	2,373,993	$305.1M	—	+2.2%
99	MACKENZIE FINANCIAL#99 · 2,373,431 sh	2,373,431	$305.0M	0.30%	-5.7%
100	THRIVENT FINANCIAL FOR LUTHERANS#100 · 2,340,397 sh	2,340,397	$300.7M	0.51%	-0.5%

Funds that sold out of MRK in Q2 2026 (119)

Held MRK at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.

Institutions that held MRK in Q1 2026 and reported no position in Q2 2026.
Institution	Shares sold	Value in Q1 2026
MARSHALL WACE, LLP2,778,301 sh	2,778,301	$334.2M
ExodusPoint Capital Management144,655 sh	144,655	$17.4M
Blue Sparrow136,900 sh	136,900	$16.5M
DUPONT CAPITAL MANAGEMENT101,853 sh	101,853	$12.3M
Patient Square Capital80,000 sh	80,000	$9.6M
BCWM51,138 sh	51,138	$6.2M
Atlas Wealth314,776 sh	314,776	$6.0M
PEAK648,515 sh	48,515	$5.8M
PINNBROOK CAPITAL MANAGEMENT46,098 sh	46,098	$5.5M
Empire Financial Management Company39,960 sh	39,960	$4.8M
Mubadala Investment PJSC39,424 sh	39,424	$4.7M
Havemeyer Place39,281 sh	39,281	$4.7M
Strong Tower Advisory Services32,655 sh	32,655	$3.9M
Redwood Grove Capital30,068 sh	30,068	$3.6M
EVOKE WEALTH29,595 sh	29,595	$3.6M
Donoghue Forlines29,649 sh	29,649	$3.6M
BOOTHBAY FUND MANAGEMENT25,244 sh	25,244	$3.0M
Gator Capital Management23,475 sh	23,475	$2.8M
Machina Capital S.A.S.22,711 sh	22,711	$2.7M
BNC WEALTH MANAGEMENT17,571 sh	17,571	$2.1M
Oasis Advisors15,472 sh	15,472	$1.9M
FOX RUN MANAGEMENT, L.L.C.13,212 sh	13,212	$1.6M
NIA IMPACT ADVISORS10,503 sh	10,503	$1.3M
LEE JOHNSON CAPITAL MANAGEMENT10,082 sh	10,082	$1.2M
AXA S.A.9,610 sh	9,610	$1.2M
Farringdon Capital, Ltd.9,120 sh	9,120	$1.1M
Teucrium Investment Advisors8,953 sh	8,953	$1.1M
Crescent Grove Advisors8,184 sh	8,184	$991.4K
Gladius Capital Management7,500 sh	7,500	$902.2K
Neumann Capital Management7,227 sh	7,227	$869.3K
Triad Investment Management6,675 sh	6,675	$788.5K
Baer Investment Advisory5,774 sh	5,774	$694.6K
K2 PRINCIPAL FUND, L.P.5,684 sh	5,684	$683.7K
Henshaw Capital5,500 sh	5,500	$661.6K
LECAP ASSET MANAGEMENT LTD5,352 sh	5,352	$643.8K
McLaughlin Asset Management5,103 sh	5,103	$613.8K
iSAM Funds (UK) Ltd4,853 sh	4,853	$583.8K
DRW Securities4,666 sh	4,666	$554.9K
INCEPTIONR4,442 sh	4,442	$534.3K
Sustainable Insight Capital Management4,412 sh	4,412	$530.7K
Optiver Holding B.V.4,313 sh	4,313	$518.8K
Garton & Associates Financial Advisors4,264 sh	4,264	$512.9K
TWINBEECH CAPITAL4,107 sh	4,107	$494.0K
Engineers Gate Manager3,877 sh	3,877	$466.4K
BW Gestao de Investimentos Ltda.3,785 sh	3,785	$455.3K
a16z Perennial Management, L.P.3,612 sh	3,612	$434.5K
Silver Coast Investments3,564 sh	3,564	$428.7K
WBI INVESTMENTS3,553 sh	3,553	$427.4K
Game Creek Capital3,500 sh	3,500	$421.0K
Mach-1 Financial Group3,385 sh	3,385	$407.2K
OCCUDO QUANTITATIVE STRATEGIES3,567 sh	3,567	$389.4K
Edgestream Partners, L.P.3,181 sh	3,181	$382.6K
Hibernia Wealth Partners3,145 sh	3,145	$378.3K
Flaharty Asset Management3,144 sh	3,144	$378.2K
POTENTIA WEALTH3,030 sh	3,030	$364.5K
MENORA MIVTACHIM LTD.3,000 sh	3,000	$360.9K
Bellecapital International Ltd.2,871 sh	2,871	$345.4K
Altar Rock2,767 sh	2,767	$335.2K
OV Management2,751 sh	2,751	$330.9K
Stegent Equity Advisors2,709 sh	2,709	$325.9K
Lighthouse Investment Partners2,682 sh	2,682	$322.6K
Richmond Investment Services2,561 sh	2,561	$308.1K
Seelaus Asset Management2,450 sh	2,450	$294.8K
Ocean Park Asset Management2,330 sh	2,330	$280.3K
PATTON FUND MANAGEMENT2,264 sh	2,264	$272.3K
SkyView Investment Advisors2,210 sh	2,210	$266.0K
Koss-Olinger Consulting2,174 sh	2,174	$261.5K
Pathway Financial Advisors2,137 sh	2,137	$258.3K
ORBA Wealth Advisors, L.L.C.2,142 sh	2,142	$257.7K
TT International Asset Management LTD2,100 sh	2,100	$252.6K
FORTRESS FINANCIAL GROUP2,056 sh	2,056	$247.3K
CORNERSTONE ADVISORS ASSET MANAGEMENT2,011 sh	2,011	$241.9K
Spectrum Planning & Advisory Services2,007 sh	2,007	$241.5K
American Financial Advisors1,970 sh	1,970	$236.9K
Marion Wealth Management1,934 sh	1,934	$232.7K
Requisite Capital Management1,920 sh	1,920	$232.6K
Investmark Advisory Group1,873 sh	1,873	$225.4K
Hillsdale Investment Management1,861 sh	1,861	$223.9K
L.K. Benson & Company, P.C.1,860 sh	1,860	$223.7K
FIRST WILSHIRE SECURITIES MANAGEMENT1,853 sh	1,853	$222.9K
ADAPT WEALTH ADVISORS1,814 sh	1,814	$218.2K
Atlas Private Wealth Advisors1,811 sh	1,811	$217.9K
Transcendent Capital Group1,807 sh	1,807	$217.4K
Pacific Sage Partners1,793 sh	1,793	$215.6K
FreeGulliver1,777 sh	1,777	$213.8K
TWO SIGMA SECURITIES1,737 sh	1,737	$208.9K
Wealth Watch Advisors1,728 sh	1,728	$207.9K
BREAKTHRU ADVISORY SERVICES1,710 sh	1,710	$205.7K
KG&L Capital Management1,724 sh	1,724	$205.3K
Iowa State Bank1,696 sh	1,696	$204.0K
Andina Capital Management1,694 sh	1,694	$203.8K
Arkos Global Advisors1,463 sh	1,463	$176.0K
WHI1,200 sh	1,200	$144.3K
Timothy G. Youngquist 2020 Irrevocable876 sh	876	$105.4K
Scarborough Advisors812 sh	812	$97.7K
Global Wealth Strategies & Associates787 sh	787	$94.6K
Prism Planning Partners716 sh	716	$86.1K
CLEAR INVESTMENT RESEARCH676 sh	676	$81.3K
Clayton Financial Group675 sh	675	$81.2K
True Link Financial Advisors636 sh	636	$76.5K

And 19 smaller positions.

Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.