Organon & Co. (OGN) — Institutional Holders, Q2 2026

635 institutional investment managers reported a OGN position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $2.9B. 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.

← OGN stock profile

OGN 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

113

Added to

116

Trimmed

191

Sold out

Biggest buyers

Pentwater Capital ManagementNew · +18,100,000 sh+$245.1M
Man Group plcNew · +4,180,500 sh+$56.6M
ALLIANCEBERNSTEIN L.P.Added · +4,034,159 sh+$54.6M
AQR ArbitrageNew · +3,880,354 sh+$52.5M
GOLDMAN SACHS GROUPAdded · +3,593,677 sh+$48.7M

Biggest sellers

VANGUARD PORTFOLIO MANAGEMENTTrimmed · -6,713,918 sh-$90.9M
CANADA PENSION PLAN INVESTMENT BOARDSold out · -5,011,100 sh-$67.9M
Think InvestmentsSold out · -4,000,000 sh-$54.2M
LSV ASSET MANAGEMENTTrimmed · -3,522,694 sh-$47.7M
MILLENNIUM MANAGEMENTTrimmed · -3,339,105 sh-$45.2M

OGN 13F holders ranked 1–100 of 635

Institutional investors reporting a position in Organon & Co. on SEC Form 13F-HR for Q2 2026, ranked by reported value.
#	Institution	Shares	Value	% of portfolio	QoQShares vs Q1 2026
1	BlackRock#1 · 32,056,866 sh	32,056,866	$434.0M	<0.01%	+1.1%
2	Pentwater Capital Management#2 · 18,100,000 sh	18,100,000	$245.1M	1.50%	New
3	VANGUARD PORTFOLIO MANAGEMENT#3 · 15,132,118 sh	15,132,118	$204.9M	<0.01%	-30.7%
4	VANGUARD CAPITAL MANAGEMENT#4 · 11,909,865 sh	11,909,865	$161.3M	<0.01%	+1.5%
5	STATE STREET#5 · 9,659,371 sh	9,659,371	$130.8M	<0.01%	-3.0%
6	GOLDMAN SACHS GROUP#6 · 5,199,002 sh	5,199,002	$70.4M	<0.01%	+223.9%
7	UBS Group AG#7 · 4,856,529 sh	4,856,529	$65.8M	<0.01%	+39.9%
8	GEODE CAPITAL MANAGEMENT#8 · 4,815,610 sh	4,815,610	$65.2M	<0.01%	+1.2%
9	Man Group plc#9 · 4,180,500 sh	4,180,500	$56.6M	0.09%	New
10	AQR Arbitrage#10 · 3,880,354 sh	3,880,354	$52.4M	0.75%	New
11	PRIVATE MANAGEMENT GROUP#11 · 3,742,161 sh	3,742,161	$50.7M	1.33%	-14.4%
12	LSV ASSET MANAGEMENT#12 · 3,737,036 sh	3,737,036	$50.6M	0.09%	-48.5%
13	CHARLES SCHWAB INVESTMENT MANAGEMENT#13 · 3,457,262 sh	3,457,262	$46.8M	<0.01%	+2.8%
14	MILLENNIUM MANAGEMENT#14 · 3,442,430 sh	3,442,430	$46.6M	0.02%	-49.2%
15	DIMENSIONAL FUND ADVISORS#15 · 3,266,826 sh	3,266,826	$44.2M	<0.01%	0.0%
16	FIRST ADVISORS#16 · 3,099,481 sh	3,099,481	$42.0M	0.02%	-4.0%
17	Capula Management Ltd#17 · 3,049,207 sh	3,049,207	$41.3M	0.15%	New
18	NEXPOINT ASSET MANAGEMENT, L.P.#18 · 3,009,630 sh	3,009,630	$40.8M	2.72%	New
19	Magnetar Financial#19 · 2,810,019 sh	2,810,019	$38.0M	0.35%	New
20	GLAZER CAPITAL#20 · 2,745,000 sh	2,745,000	$37.2M	0.91%	New
21	KAHN BROTHERS GROUP#21 · 5,536,993 sh	5,536,993	$33.2M	5.88%	0.0%
22	Bank of New York Mellon#22 · 2,282,161 sh	2,282,161	$30.9M	<0.01%	+2.3%
23	MORGAN STANLEY#23 · 2,202,199 sh	2,202,199	$29.8M	<0.01%	-33.1%
24	BALYASNY ASSET MANAGEMENT L.P.#24 · 2,196,642 sh	2,196,642	$29.7M	0.04%	+908.1%
25	Kryger Capital#25 · 2,152,693 sh	2,152,693	$29.1M	1.66%	New
26	ALLIANCEBERNSTEIN L.P.#26 · 4,754,671 sh	4,754,671	$28.5M	<0.01%	+559.9%
27	Allianz Asset Management GmbH#27 · 2,093,459 sh	2,093,459	$28.3M	0.03%	+93.3%
28	NORTHERN#28 · 2,080,508 sh	2,080,508	$28.2M	<0.01%	+8.7%
29	VANGUARD FIDUCIARY#29 · 1,660,492 sh	1,660,492	$22.5M	<0.01%	+3.0%
30	Invesco Ltd.#30 · 1,643,187 sh	1,643,187	$22.2M	<0.01%	-26.2%
31	Westchester Capital Management#31 · 1,426,578 sh	1,426,578	$19.3M	0.95%	New
32	TIG Advisors#32 · 1,400,283 sh	1,400,283	$19.0M	0.84%	New
33	WATER ISLAND CAPITAL#33 · 1,374,899 sh	1,374,899	$18.6M	1.73%	New
34	ALPINE ASSOCIATES MANAGEMENT#34 · 1,345,233 sh	1,345,233	$18.2M	1.14%	New
35	PRINCIPAL FINANCIAL GROUP#35 · 1,266,614 sh	1,266,614	$17.1M	<0.01%	+0.5%
36	AQR CAPITAL MANAGEMENT#36 · 1,245,588 sh	1,245,588	$16.8M	<0.01%	-63.9%
37	FMR#37 · 1,187,549 sh	1,187,549	$16.1M	<0.01%	-53.6%
38	HSBC PLC#38 · 1,078,134 sh	1,078,134	$14.6M	<0.01%	+4706.9%
39	Gotham Asset Management#39 · 1,032,313 sh	1,032,313	$14.0M	0.03%	-17.9%
40	Cerity Partners#40 · 1,009,842 sh	1,009,842	$13.7M	0.02%	-56.3%
41	GABELLI FUNDS#41 · 954,910 sh	954,910	$12.9M	0.08%	New
42	Polar Asset Management Partners#42 · 949,806 sh	949,806	$12.9M	0.21%	New
43	PUBLIC SECTOR PENSION INVESTMENT BOARD#43 · 902,195 sh	902,195	$12.2M	0.03%	-3.0%
44	HEALTHCARE OF ONTARIO PENSION PLAN FUND#44 · 837,305 sh	837,305	$11.3M	0.02%	New
45	MARSHALL WACE, LLP#45 · 828,133 sh	828,133	$11.2M	<0.01%	-11.3%
46	Groupe la Francaise#46 · 775,382 sh	775,382	$10.5M	0.06%	New
47	HOTCHKIS & WILEY CAPITAL MANAGEMENT#47 · 743,270 sh	743,270	$10.1M	0.03%	-46.0%
48	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME#48 · 742,009 sh	742,009	$10.0M	<0.01%	-4.7%
49	BRANDES INVESTMENT PARTNERS#49 · 729,502 sh	729,502	$9.9M	0.07%	+5.5%
50	D. E. Shaw#50 · 718,753 sh	718,753	$9.7M	<0.01%	-72.8%
51	TOKIO MARINE ASSET MANAGEMENT LTD#51 · 704,100 sh	704,100	$9.5M	—	New
52	Sagefield Capital#52 · 701,857 sh	701,857	$9.5M	0.70%	New
53	Legal & General Group Plc#53 · 669,375 sh	669,375	$9.1M	<0.01%	-1.3%
54	P SCHOENFELD ASSET MANAGEMENT#54 · 667,400 sh	667,400	$9.0M	3.70%	New
55	Absolute Gestao de Investimentos Ltda.#55 · 665,230 sh	665,230	$9.0M	0.91%	New
56	AMERIPRISE FINANCIAL#56 · 663,233 sh	663,233	$9.0M	<0.01%	-12.1%
57	BANK OF AMERICA#57 · 649,755 sh	649,755	$8.8M	<0.01%	-12.0%
58	CREDIT INDUSTRIEL ET COMMERCIAL#58 · 584,944 sh	584,944	$7.9M	0.51%	New
59	PICTON MAHONEY ASSET MANAGEMENT#59 · 575,000 sh	575,000	$7.8M	0.06%	New
60	AMERICAN CENTURY COMPANIES#60 · 567,310 sh	567,310	$7.7M	<0.01%	+18.7%
61	WELLS FARGO & COMPANY#61 · 554,832 sh	554,832	$7.5M	<0.01%	-20.8%
62	Centiva Capital#62 · 554,800 sh	554,800	$7.5M	0.07%	New
63	GABELLI & INVESTMENT ADVISERS#63 · 548,700 sh	548,700	$7.4M	1.08%	New
64	STATE OF WISCONSIN INVESTMENT BOARD#64 · 538,388 sh	538,388	$7.3M	0.01%	+255.1%
65	Swiss National Bank#65 · 526,475 sh	526,475	$7.1M	<0.01%	+2.7%
66	WINTON GROUP Ltd#66 · 509,862 sh	509,862	$6.9M	0.22%	New
67	FIRST MANHATTAN#67 · 504,647 sh	504,647	$6.8M	0.02%	-46.9%
68	NEW YORK LIFE INVESTMENT MANAGEMENT#68 · 503,117 sh	503,117	$6.8M	0.05%	New
69	Verition Fund Management#69 · 497,996 sh	497,996	$6.7M	<0.01%	New
70	RHUMBLINE ADVISERS#70 · 496,563 sh	496,563	$6.7M	<0.01%	+1.0%
71	Nuveen#71 · 486,400 sh	486,400	$6.6M	<0.01%	+3.7%
72	Alberta Investment Management#72 · 450,000 sh	450,000	$6.1M	0.03%	New
73	Carmignac Gestion#73 · 448,606 sh	448,606	$6.1M	0.08%	New
74	Maven Securities LTD#74 · 434,200 sh	434,200	$5.9M	0.12%	New
75	Quantinno Capital Management#75 · 421,790 sh	421,790	$5.7M	<0.01%	+59.2%
76	FRANKLIN RESOURCES#76 · 408,184 sh	408,184	$5.5M	<0.01%	+44.3%
77	Vestcor#77 · 406,752 sh	406,752	$5.5M	0.14%	+871.0%
78	LMR Partners LLP#78 · 396,842 sh	396,842	$5.4M	0.02%	+2903.4%
79	CITIGROUP#79 · 392,268 sh	392,268	$5.3M	<0.01%	-34.3%
80	First Capital Management L.P.#80 · 390,939 sh	390,939	$5.3M	0.31%	New
81	BNP PARIBAS FINANCIAL MARKETS#81 · 390,745 sh	390,745	$5.3M	<0.01%	+168.7%
82	Squarepoint Ops#82 · 390,232 sh	390,232	$5.3M	<0.01%	-53.1%
83	NORGES BANK#83 · 374,251 sh	374,251	$5.1M	<0.01%	—
84	READYSTATE ASSET MANAGEMENT#84 · 351,863 sh	351,863	$4.8M	<0.01%	New
85	CITADEL ADVISORS#85 · 344,359 sh	344,359	$4.7M	<0.01%	-82.8%
86	JPMORGAN CHASE#86 · 318,314 sh	318,314	$4.5M	<0.01%	+6.7%
87	Universal- Beteiligungs- und Servicegesellschaft mbH#87 · 315,858 sh	315,858	$4.3M	<0.01%	-39.7%
88	Toroso Investments#88 · 285,099 sh	285,099	$3.9M	<0.01%	+18.1%
89	CM Management#89 · 275,000 sh	275,000	$3.7M	2.36%	-31.2%
90	SECTOR GAMMA AS#90 · 270,781 sh	270,781	$3.7M	0.80%	-28.0%
91	VANGUARD ASSET MANAGEMENT, Ltd#91 · 248,207 sh	248,207	$3.4M	<0.01%	+8.5%
92	TWO SIGMA INVESTMENTS#92 · 241,392 sh	241,392	$3.3M	<0.01%	-92.3%
93	PRICE T ROWE ASSOCIATES#93 · 239,671 sh	239,671	$3.2M	<0.01%	+19.2%
94	PRUDENTIAL FINANCIAL#94 · 239,262 sh	239,262	$3.2M	<0.01%	-0.5%
95	NEW YORK STATE TEACHERS RETIREMENT SYSTEM#95 · 233,278 sh	233,278	$3.2M	—	+13.2%
96	PDT Partners#96 · 230,275 sh	230,275	$3.1M	0.16%	-17.0%
97	180 WEALTH ADVISORS#97 · 226,383 sh	226,383	$3.1M	0.31%	-0.7%
98	SUSQUEHANNA INTERNATIONAL GROUP, LLP#98 · 221,647 sh	221,647	$3.0M	<0.01%	-79.5%
99	STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM#99 · 218,888 sh	218,888	$3.0M	<0.01%	-2.8%
100	Kintayl Capital#100 · 214,850 sh	214,850	$2.9M	1.16%	New

Funds that sold out of OGN in Q2 2026 (93)

Held OGN 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 OGN in Q1 2026 and reported no position in Q2 2026.
Institution	Shares sold	Value in Q1 2026
CANADA PENSION PLAN INVESTMENT BOARD5,011,100 sh	5,011,100	$30.0M
Think Investments4,000,000 sh	4,000,000	$24.0M
MASSACHUSETTS FINANCIAL SERVICES1,689,210 sh	1,689,210	$10.1M
Sio Capital Management865,908 sh	865,908	$5.2M
Bridgewater Associates594,483 sh	594,483	$3.6M
Y-Intercept (Hong Kong) Ltd476,488 sh	476,488	$2.9M
Grantham, Mayo, Van Otterloo448,874 sh	448,874	$2.7M
Trexquant Investment402,790 sh	402,790	$2.4M
Walleye Capital393,125 sh	393,125	$2.4M
Lombard Odier Asset Management (USA)380,000 sh	380,000	$2.3M
VestGen Advisors170,619 sh	170,619	$2.3M
CIBC Bancorp USA340,721 sh	340,721	$2.0M
Pavaki Capital Management328,100 sh	328,100	$2.0M
HRT FINANCIAL318,180 sh	318,180	$1.9M
Point72 Asset Management, L.P.238,000 sh	238,000	$1.4M
Poehling Capital Management219,288 sh	219,288	$1.3M
WELLINGTON MANAGEMENT GROUP LLP167,327 sh	167,327	$1.0M
Brevan Howard Capital Management163,067 sh	163,067	$976.8K
SUSQUEHANNA ADVISORS GROUP162,915 sh	162,915	$975.9K
TWINBEECH CAPITAL156,721 sh	156,721	$938.8K
Campbell & Investment Adviser128,309 sh	128,309	$768.6K
Aviance Capital Partners105,723 sh	105,723	$633.3K
Philip James Wealth Mangement100,796 sh	100,796	$603.8K
VARCOV87,302 sh	87,302	$522.9K
FOX RUN MANAGEMENT, L.L.C.89,236 sh	89,236	$508.6K
Jain Global84,732 sh	84,732	$507.5K
Arnhold77,030 sh	77,030	$461.4K
MANGROVE PARTNERS IM73,164 sh	73,164	$438.3K
Unifi Asset Management69,050 sh	69,050	$413.6K
JACOBS LEVY EQUITY MANAGEMENT58,657 sh	58,657	$351.4K
Sterneck Capital Management58,485 sh	58,485	$350.3K
State of Wyoming54,310 sh	54,310	$325.3K
Schonfeld Strategic Advisors52,525 sh	52,525	$314.6K
Jump Financial52,456 sh	52,456	$314.2K
DARK FOREST CAPITAL MANAGEMENT52,272 sh	52,272	$313.1K
IMC-Chicago47,531 sh	47,531	$284.7K
Lighthouse Investment Partners47,340 sh	47,340	$283.6K
Radnor Capital Management43,316 sh	43,316	$259.5K
SEB Asset Management AB35,107 sh	35,107	$210.3K
Freestone Grove Partners30,774 sh	30,774	$184.3K
INFRASTRUCTURE CAPITAL ADVISORS28,001 sh	28,001	$167.7K
Compound Planning27,591 sh	27,591	$165.3K
SummitTX Capital, L.P.23,455 sh	23,455	$140.5K
UNITED CAPITAL FINANCIAL ADVISORS22,481 sh	22,481	$134.7K
Gilman Hill Asset Management21,740 sh	21,740	$130.2K
ARGA Investment Management20,735 sh	20,735	$124.2K
BTG Pactual Asset Management US19,456 sh	19,456	$116.5K
LANDSCAPE CAPITAL MANAGEMENT, L.L.C.18,160 sh	18,160	$108.8K
AXQ CAPITAL15,532 sh	15,532	$93.0K
EntryPoint Capital15,231 sh	15,231	$91.2K
Kendall Capital Management15,228 sh	15,228	$91.2K
MML INVESTORS SERVICES14,333 sh	14,333	$85.9K
Venture Visionary Partners14,195 sh	14,195	$85.0K
Ensign Peak Advisors13,959 sh	13,959	$83.6K
Bill Few Associates13,942 sh	13,942	$83.5K
ENVESTNET ASSET MANAGEMENT13,873 sh	13,873	$83.1K
Quantessence Capital12,833 sh	12,833	$76.9K
EXCALIBUR MANAGEMENT11,629 sh	11,629	$69.7K
Invst11,054 sh	11,054	$66.2K
TRUIST FINANCIAL10,688 sh	10,688	$64.0K
WNY Asset Management10,666 sh	10,666	$63.9K
Catalyst Funds Management Pty Ltd10,000 sh	10,000	$59.9K
Advisory Services Network9,109 sh	9,109	$54.6K
QUADRANT CAPITAL GROUP320 sh	320	$49.9K
MAI Capital Management6,217 sh	6,217	$37.2K
Western Wealth Management982 sh	982	$5.9K
SYSTEMATIC FINANCIAL MANAGEMENT730 sh	730	$4.4K
WAYCROSS PARTNERS550 sh	550	$3.3K
Golden State Equity Partners379 sh	379	$2.3K
Citizens National Bank Department305 sh	305	$1.8K
OGOREK ANTHONY JOSEPH /NY108 sh	108	$1.0K
WHI159 sh	159	$952.00
Addison Advisors149 sh	149	$893.00
Root Financial Partners149 sh	149	$892.00
Destiny Wealth Partners116 sh	116	$698.00
BNP PARIBAS95 sh	95	$568.00
Main Street Group, LTD60 sh	60	$359.00
ENTRUST FINANCIAL60 sh	60	$359.00
Wealth Preservation Advisors50 sh	50	$300.00
WFA of San Diego42 sh	42	$252.00
MARK SHEPTOFF FINANCIAL PLANNING12 sh	12	$160.00
Scarborough Advisors24 sh	24	$144.00
Mosley Wealth Management12 sh	12	$130.00
MBM WEALTH CONSULTANTS20 sh	20	$120.00
Riverview19 sh	19	$114.00
Fairman Group15 sh	15	$91.00
Lloyd Advisory Services11 sh	11	$66.00
MOTCO8 sh	8	$48.00
Whipplewood Advisors6 sh	6	$36.00
Bay Harbor Wealth Management6 sh	6	$35.00
Westfuller Advisors4 sh	4	$22.00
GODSEY & GIBB1 sh	1	$6.00
Kohmann Bosshard Financial Services1 sh	1	$0.00

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.