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OGN · Organon & Co. · Shareholders & Ownership

Track OGN — free
Market Cap
$3.65B
Shares
262.62M
Volume · Nov 12 2.9M Avg daily vol (3M) 2.63M

Every disclosed holder of OGN in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

Who Owns OGN

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions
Holder group Shares % Out
Institutional (13F) 222,680,086 84.79%
Insiders (Forms 3, 4, 5) 1,251,973 0.48%
13D/G-only blocks 0 0.00%
Remaining 38,689,525 14.73%
Registered funds (N-PORT, not summed) 81,331,555 30.97%

Shares outstanding: 262,621,584, the issuer's latest cover-page count restated onto today's split basis.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of OGN

# Holder Shares
1
BlackRock, Inc.
13F CIK 2012383 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
32,056,866
1.1
iShares Core S&P Small-Cap ETF
Fund S000004313 · Registered fund · Jun 30, 2026
iShares Trust, not summed
15,821,742
1.2
iShares S&P Small-Cap 600 Value ETF
Fund S000004316 · Registered fund · Jun 30, 2026
iShares Trust, not summed
2,260,749
1.3
iShares Russell Mid-Cap ETF
Fund S000004338 · Registered fund · Jun 30, 2026
iShares Trust, not summed
1,114,155
1.4
iShares U.S. Pharmaceuticals ETF
Fund S000009417 · Registered fund · Jun 30, 2026
iShares Trust, not summed
683,028
1.5
iShares Russell 1000 Value ETF
Fund S000004345 · Registered fund · Jun 30, 2026
iShares Trust, not summed
585,710
2
Pentwater Capital Management LP
13F CIK 1425851 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
18,100,000
2.1
Pentwater Capital Management LP
13G CIK 1425851 · Registered investment adviser · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
18,100,000
3
VANGUARD PORTFOLIO MANAGEMENT LLC
13F CIK 2100121 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
15,132,118
3.1
VANGUARD PORTFOLIO MANAGEMENT LLC
13G CIK 2100121 · Registered investment adviser · Jun 30, 2026
Rule 13d-1(b), qualified institution, not summed
15,161,710
4
VANGUARD CAPITAL MANAGEMENT LLC
13F CIK 2100119 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
11,909,865
5
FIL Ltd
13F CIK 318989 · Non-US institution · Sep 30, 2026
10,504,377
6
STATE STREET CORP
13F CIK 93751 · Bank · Sep 30, 2026
9,759,303
6.1
State Street(R) SPDR(R) Portfolio S&P 600(TM) Small Cap ETF
Fund S000041317 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
2,417,312
6.2
State Street(R) SPDR(R) S & P 600(TM) Small Cap Value ETF
Fund S000006974 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
1,366,698
6.3
State Street(R) SPDR(R) S&P(R) Pharmaceuticals ETF
Fund S000012321 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
488,626
6.4
STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO
Fund S000050332 · Registered fund · Jun 30, 2026
STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
94,135
6.5
State Street(R) SPDR(R) Portfolio S&P 1500(R) Composite Stock Market ETF
Fund S000006973 · Registered fund · Jun 30, 2026
SPDR SERIES TRUST, not summed
50,671
7
VANGUARD TOTAL STOCK MARKET INDEX FUND
Fund S000002848 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
8,332,789
8
VANGUARD SMALL-CAP INDEX FUND
Fund S000002845 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
6,024,699
9
GOLDMAN SACHS GROUP INC
13F CIK 886982 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
5,199,002
9.1
Goldman Sachs Absolute Return Tracker Fund
Fund S000020314 · Registered fund · Aug 31, 2026
GOLDMAN SACHS TRUST, not summed
14,795
9.2
Goldman Sachs MarketBeta(R) Russell 1000 Value Equity ETF
Fund S000083006 · Registered fund · Aug 31, 2026
Goldman Sachs ETF Trust, not summed
2,920
9.3
Goldman Sachs JUST U.S. Large Cap Equity ETF
Fund S000061377 · Registered fund · Aug 31, 2026
Goldman Sachs ETF Trust, not summed
2,792
10
ALLIANCEBERNSTEIN L.P.
13F CIK 1109448 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
4,754,671
10.1
AB All Market Total Return Portfolio
Fund S000010512 · Registered fund · Jun 30, 2026
AB PORTFOLIOS, not summed
74,519
11
GEODE CAPITAL MANAGEMENT, LLC
13F CIK 1214717 · Registered investment adviser · Sep 30, 2026
4,642,311
12
UBS Group AG
13F CIK 1610520 · Bank · Sep 30, 2026
4,450,913
13
Man Group plc
13F CIK 1637460 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
4,180,500
14
AQR Arbitrage LLC
13F CIK 1167456 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
3,880,354
15
VANGUARD SMALL-CAP VALUE INDEX FUND
Fund S000002847 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
3,815,001
16
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
13F CIK 884546 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
3,457,262
16.1
Schwab U.S. Small-Cap ETF
Fund S000026636 · Registered fund · Aug 31, 2026
SCHWAB STRATEGIC TRUST, not summed
1,246,274
16.2
Schwab Fundamental U.S. Large Company ETF
Fund S000040877 · Registered fund · Aug 31, 2026
SCHWAB STRATEGIC TRUST, not summed
1,016,875
16.3
Schwab Fundamental U.S. Large Company Index Fund
Fund S000016766 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
491,060
16.4
Schwab U.S. Broad Market ETF
Fund S000026631 · Registered fund · Aug 31, 2026
SCHWAB STRATEGIC TRUST, not summed
155,900
16.5
Schwab Total Stock Market Index Fund
Fund S000005913 · Registered fund · Jul 31, 2026
SCHWAB CAPITAL TRUST, not summed
155,644
17
MILLENNIUM MANAGEMENT LLC
13F CIK 1273087 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
3,442,430
18
DIMENSIONAL FUND ADVISORS LP
13F CIK 354204 · Registered investment adviser · Sep 30, 2026
3,258,845
18.1
Dimensional U.S. Small Cap ETF
Fund S000070906 · Registered fund · Jul 31, 2026
Dimensional ETF Trust, not summed
667,484
18.2
U.S. MICRO CAP PORTFOLIO
Fund S000000948 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
586,753
18.3
U.S. SMALL CAP PORTFOLIO
Fund S000000971 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
388,330
18.4
U.S. CORE EQUITY 2 PORTFOLIO
Fund S000000980 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
130,585
18.5
U.S. Targeted Value Portfolio
Fund S000000970 · Registered fund · Jul 31, 2026
DFA INVESTMENT DIMENSIONS GROUP INC, not summed
105,250
19
Capula Management Ltd
13F CIK 1557017 · Exempt reporting adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
3,049,207
20
VANGUARD EXTENDED MARKET INDEX FUND
Fund S000002841 · Registered fund · Jun 30, 2026
VANGUARD INDEX FUNDS, not summed
3,010,255
21
NEXPOINT ASSET MANAGEMENT, L.P.
13F CIK 1469877 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
3,009,630
21.1
Nexpoint Merger Arbitrage Fund
Fund S000054634 · Registered fund · Jun 30, 2026
NexPoint Funds I, not summed
2,705,080
21.2
NexPoint Event Driven Fund
Fund S000021242 · Registered fund · Jun 30, 2026
NexPoint Funds I, not summed
171,820
22
Magnetar Financial LLC
13F CIK 1352851 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
2,810,019
23
GLAZER CAPITAL, LLC
13F CIK 1076809 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
2,745,000
24
KAHN BROTHERS GROUP INC
13F CIK 1039565 · Investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
2,670,523
25
MORGAN STANLEY
13F CIK 895421 · Holding company · Jun 30, 2026
carried, not yet filed for the newest quarter
2,202,199
25.1
E*TRADE No Fee Total Market Index Fund
Fund S000090722 · Registered fund · Jul 31, 2026
E Trade Trust, not summed
174
26
Bank of New York Mellon Corp
13F CIK 1390777 · Bank · Sep 30, 2026
2,197,194
27
Balyasny Asset Management L.P.
13F CIK 1218710 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
2,196,642
28
Kryger Capital LLC
13F CIK 2123957 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
2,152,693
29
Allianz Asset Management GmbH
13F CIK 1535323 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
2,093,459
29.1
PIMCO RAE US Small Fund
Fund S000048957 · Registered fund · Jun 30, 2026
PIMCO Equity Series, not summed
515,461
29.2
PIMCO Global Core Asset Allocation Fund
Fund S000023224 · Registered fund · Jun 30, 2026
PIMCO FUNDS, not summed
31,500
29.3
PIMCO Global Managed Asset Allocation Portfolio
Fund S000024339 · Registered fund · Jun 30, 2026
PIMCO VARIABLE INSURANCE TRUST, not summed
28,100
29.4
PIMCO Inflation Response Multi-Asset Fund
Fund S000033597 · Registered fund · Jun 30, 2026
PIMCO FUNDS, not summed
22,900
29.5
PIMCO RAFI Dynamic Multi-Factor U.S. Equity ETF
Fund S000057225 · Registered fund · Jun 30, 2026
PIMCO Equity Series, not summed
15,041
30
NORTHERN TRUST CORP
13F CIK 73124 · Bank · Jun 30, 2026
carried, not yet filed for the newest quarter
2,080,508
30.1
FlexShares Morningstar US Market Factor Tilt Index Fund
Fund S000033312 · Registered fund · Jul 31, 2026
FlexShares Trust, not summed
45,504
30.2
Small Cap Core Fund
Fund S000001244 · Registered fund · Jun 30, 2026
Northern Funds, not summed
23,564
31
Westchester Capital Management, LLC
13F CIK 1512805 · Registered investment adviser · Sep 30, 2026
1,947,908
32
FMR LLC
13F CIK 315066 · Holding company · Sep 30, 2026
1,905,091
32.1
Fidelity Extended Market Index Fund
Fund S000006021 · Registered fund · Aug 31, 2026
Fidelity Concord Street Trust, not summed
1,282,304
32.2
Fidelity Mid Cap Index Fund
Fund S000033637 · Registered fund · Jul 31, 2026
Fidelity Salem Street Trust, not summed
991,694
32.3
Fidelity SAI Merger Arbitrage Fund
Fund S000091043 · Registered fund · Jul 31, 2026
Fidelity Greenwood Street Trust, not summed
779,457
32.4
Fidelity Total Market Index Fund
Fund S000006026 · Registered fund · Aug 31, 2026
Fidelity Concord Street Trust, not summed
498,719
32.5
Fidelity Series Total Market Index Fund
Fund S000065248 · Registered fund · Aug 31, 2026
Fidelity Concord Street Trust, not summed
407,914
33
VANGUARD FIDUCIARY TRUST CO
13F CIK 933478 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
1,660,492
34
Invesco Ltd.
13F CIK 914208 · Investment adviser · Sep 30, 2026
1,643,589
34.1
Invesco S&P SmallCap 600 Revenue ETF
Fund S000064596 · Registered fund · Aug 31, 2026
Invesco Exchange-Traded Fund Trust II, not summed
599,412
34.2
Invesco RAFI US 1000 ETF
Fund S000011995 · Registered fund · Jul 31, 2026
Invesco Exchange-Traded Fund Trust, not summed
310,057
34.3
Invesco S&P SmallCap Health Care ETF
Fund S000028299 · Registered fund · Aug 31, 2026
Invesco Exchange-Traded Fund Trust II, not summed
246,155
34.4
Invesco S&P Smallcap 600 Pure Value ETF
Fund S000060800 · Registered fund · Jul 31, 2026
Invesco Exchange-Traded Fund Trust, not summed
233,218
34.5
Invesco Russell 1000 Equal Weight ETF
Fund S000047524 · Registered fund · Aug 31, 2026
Invesco Exchange-Traded Fund Trust II, not summed
55,891
35
TIG Advisors, LLC
13F CIK 1358253 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,400,283
36
Squarepoint Ops LLC
13F CIK 1642575 · Registered investment adviser · Sep 30, 2026
1,378,949
37
WATER ISLAND CAPITAL LLC
13F CIK 1222765 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,374,899
37.1
AltShares Merger Arbitrage ETF
Fund S000067196 · Registered fund · Aug 31, 2026
AltShares Trust, not summed
140,046
38
ALPINE ASSOCIATES MANAGEMENT INC.
13F CIK 1396835 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,345,233
39
GABELLI FUNDS LLC
13F CIK 1081407 · Registered investment adviser · Sep 30, 2026
1,330,460
39.1
The Gabelli ABC Fund
Fund S000001070 · Registered fund · Jun 30, 2026
Gabelli Investor Funds Inc, not summed
239,500
39.2
Enterprise Mergers and Acquisitions Fund
Fund S000017793 · Registered fund · Jun 30, 2026
Gabelli 787 Fund, Inc., not summed
33,750
39.3
Comstock Capital Value Fund
Fund S000001057 · Registered fund · Jun 30, 2026
Comstock Funds, Inc., not summed
10,000
40
PRINCIPAL FINANCIAL GROUP INC
13F CIK 1126328 · Insurance company · Sep 30, 2026
1,245,982
40.1
SmallCap S&P 600 Index Fund
Fund S000007203 · Registered fund · Jul 31, 2026
Principal Funds, Inc, not summed
193,477
40.2
SmallCap Value Fund II
Fund S000007169 · Registered fund · Jul 31, 2026
Principal Funds, Inc, not summed
118,200
40.3
Global Multi-Strategy Fund
Fund S000033960 · Registered fund · Aug 31, 2026
Principal Funds, Inc, not summed
68,998
40.4
MidCap Value Fund I
Fund S000007173 · Registered fund · Jul 31, 2026
Principal Funds, Inc, not summed
5,894
41
AQR CAPITAL MANAGEMENT LLC
13F CIK 1167557 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,245,588
42
VANGUARD TAX-MANAGED SMALL-CAP FUND
Fund S000004387 · Registered fund · Jun 30, 2026
VANGUARD TAX-MANAGED FUNDS, not summed
1,231,414
43
The Merger Fund
Fund S000005158 · Registered fund · Jun 30, 2026
Merger Fund, not summed
1,135,967
44
HSBC HOLDINGS PLC
13F CIK 873630 · Unknown · Jun 30, 2026
carried, not yet filed for the newest quarter
1,078,134
45
VANGUARD HIGH DIVIDEND YIELD INDEX FUND
Fund S000014011 · Registered fund · Jul 31, 2026
VANGUARD WHITEHALL FUNDS, not summed
1,052,879
46
Gotham Asset Management, LLC
13F CIK 1510387 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,032,313
47
Cerity Partners LLC
13F CIK 1566475 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
1,009,842
48
Polar Asset Management Partners Inc.
13F CIK 1326389 · Registered investment adviser · Jun 30, 2026
carried, not yet filed for the newest quarter
949,806
49
VANGUARD S&P SMALL-CAP 600 INDEX FUND
Fund S000030017 · Registered fund · Aug 31, 2026
VANGUARD ADMIRAL FUNDS, not summed
944,925
50
Public Sector Pension Investment Board
13F CIK 1396318 · Non-US institution · Sep 30, 2026
893,293

61 more nested rows are not shown here; Every filing lists them all.

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Showing 1–50 of 755 holders

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Key facts CIK 1821825 CUSIP 68622V106 13F (30d) 460 filings 405 filers Visit website Investor relations