Organon & Co. (OGN) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

262,295,082Shares Outstanding

787,369Shares held by institutions

$5,732,046Value of institutional holdings

74.32%Institutional ownership %

6.82%Shares Changed QoQ

587No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

According to SEC filings for the period ending December 2025, Organon & Co. (NYSE:OGN) is held by 587 institutional firms.

Institutional ownership in Organon edged down to 74.3% in December 2025, compared to 75.8% in September 2025.
Quarterly data indicates a 6.82% shift in institutional share volume, and the annual owner count reflects a decrease of 19.37%.
Of these 587 institutional investors, 214 increased their holdings in Organon, while 212 of them reduced positions, and 161 investors maintained their exposure.
Collectively, institutional investors increased their stake in Organon to 194.94Mn shares as of December 2025, a change that is up by 12.44Mn shares quarter on quarter and down 10.72Mn shares year over year.
As of December 31, 2025, VANGUARD GROUP INC held Organon's largest shareholding position with over 36.92Mn shares, representing 14.07% of total outstanding shares.
Among the most significant buyers of Organon during December 2025 were AQR CAPITAL MANAGEMENT LLC (4.39Mn), Sio Capital Management, LLC (3.42Mn), D. E. Shaw & Co., Inc. (2.90Mn), Walleye Capital LLC (1.89Mn), JANE STREET GROUP, LLC (1.79Mn).
Leading sellers of Organon stock in December 2025 included MILLENNIUM MANAGEMENT LLC (4.13Mn), MASSACHUSETTS FINANCIAL SERVICES CO /MA/ (2.62Mn), Russell Investments Group, Ltd. (1.83Mn), Bank of New York Mellon Corp (1.31Mn), MORGAN STANLEY (1.18Mn).
The top 10 institutional holders of Organon for the quarter ending December 2025 included VANGUARD GROUP INC (36.92Mn), BlackRock, Inc. (30.97Mn), STATE STREET CORP (9.60Mn), AQR CAPITAL MANAGEMENT LLC (8.57Mn), LSV ASSET MANAGEMENT (7.47Mn), MASSACHUSETTS FINANCIAL SERVICES CO /MA/ (6.88Mn), GEODE CAPITAL MANAGEMENT, LLC (4.60Mn), PRIVATE MANAGEMENT GROUP INC (4.35Mn), UBS Group AG (4.30Mn), KAHN BROTHERS GROUP INC (3.63Mn).

587 Institutional Holders

787,369 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
VANGUARD GROUP INC	31 Dec, 2025	36,916,382	987,979	2.75%	$264,690,458.00
BlackRock, Inc.	31 Dec, 2025	30,966,019	107,330	0.35%	$222,026,355.00
STATE STREET CORP	31 Dec, 2025	9,597,761	262,185	2.81%	$68,815,946.00
AQR CAPITAL MANAGEMENT LLC	31 Dec, 2025	8,570,958	4,394,814	105.24%	$61,282,347.00
LSV ASSET MANAGEMENT	31 Dec, 2025	7,472,429	-362,111	-4.62%	$53,577.00
MASSACHUSETTS FINANCIAL SERVICES CO /MA/	31 Dec, 2025	6,882,166	-2,619,936	-27.57%	$49,345,130.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	4,600,477	-215,105	-4.47%	$32,992,346.00
PRIVATE MANAGEMENT GROUP INC	31 Dec, 2025	4,347,073	1,204,979	38.35%	$31,168,513.00
UBS Group AG	31 Dec, 2025	4,295,002	1,527,492	55.19%	$30,795,164.00
KAHN BROTHERS GROUP INC	31 Dec, 2025	3,629,451	12,606	0.35%	$26,023,163.00
Sio Capital Management, LLC	31 Dec, 2025	3,421,765	3,421,765	0.00%	$24,534,055.00
D. E. Shaw & Co., Inc.	31 Dec, 2025	3,386,724	2,895,864	589.96%	$24,282,811.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	3,384,140	-305,410	-8.28%	$24,263,398.00
MORGAN STANLEY	31 Dec, 2025	3,179,142	-1,178,774	-27.05%	$22,794,461.00
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	31 Dec, 2025	2,906,768	-203,784	-6.55%	$20,841,524.00
Gotham Asset Management, LLC	31 Dec, 2025	2,653,817	-1,059,387	-28.53%	$19,027,868.00
CANADA PENSION PLAN INVESTMENT BOARD	31 Dec, 2025	2,429,740	56,200	2.37%	$17,421,236.00
Bank of New York Mellon Corp	31 Dec, 2025	2,260,925	-1,311,030	-36.70%	$16,210,831.00
JANE STREET GROUP, LLC	31 Dec, 2025	2,180,956	1,794,424	464.24%	$15,637,455.00
TWO SIGMA INVESTMENTS, LP	31 Dec, 2025	2,170,476	1,529,117	238.42%	$15,562,313.00

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