Organon & Co.

OGNNYSE

$13.72+0.01 (+0.07%)as of Oct 2, 2026

Legend

Insider buy

Insider sell

Congress buy

Congress sell

Hedge Funds
bought vs soldGreener markers show more buyers; redder markers show more sellers.

Company share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size.

Insider buy
Insider sell
Congress buy
Congress sell
Hedge Funds bought vs sold

Share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size. Greener fund markers mean more buyers.

Insider Buy
Insider Sell
Congress Buy
Congress Sell
Hedge funds bought vs sold
BuybackNo changeNet dilution

Organon & Co. price and activity chart data

Showing the 1Y range: Oct 2, 2025 to Oct 2, 2026. Price (+25.4%). 0 insider or congressional trades plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
Date	Category	Person	Role	Action	Amount	Change in holding

Largest institutional holders

13F · Q2 2026

Fund	% of company held	Value	% of portfolio	Quarterly activity
BlackRock, Inc.	12.21%	$434M	0.01%	Not reported
Pentwater Capital Management LP	6.89%	$245M	1.50%	New Not reported
Vanguard Portfolio Management LLC	5.76%	$205M	0.01%	Not reported
Vanguard Capital Management LLC	4.54%	$161M	0.00%	Not reported
State Street Corp	3.68%	$131M	0.00%	Not reported
Goldman Sachs Group Inc	1.98%	$70.4M	0.01%	Not reported
UBS Group AG	1.85%	$65.8M	0.01%	Not reported
Geode Capital Management, LLC	1.83%	$65.2M	0.00%	Not reported
Alliancebernstein L.P.	1.81%	$28.5M	0.01%	Not reported
Man Group plc	1.59%	$56.6M	0.09%	Not reported
AQR Arbitrage LLC	1.48%	$52.4M	0.75%	Not reported
Private Management Group Inc	1.43%	$50.7M	1.33%	Reduce 14.45%
LSV Asset Management	1.42%	$50.6M	0.09%	Reduce 48.52%
Charles Schwab Investment Management Inc	1.32%	$46.8M	0.01%	Not reported
Millennium Management LLC	1.31%	$46.6M	0.02%	Not reported
Dimensional Fund Advisors LP	1.24%	$44.2M	0.01%	Not reported
First Trust Advisors LP	1.18%	$42M	0.02%	Reduce 3.96%
Capula Management Ltd	1.16%	$41.3M	0.15%	Not reported
Nexpoint Asset Management, L.P.	1.15%	$40.8M	2.72%	New Not reported
Magnetar Financial LLC	1.07%	$38M	0.35%	Not reported
Glazer Capital, LLC	1.05%	$37.2M	0.91%	Not reported
Kahn Brothers Group Inc	1.02%	$36.2M	5.72%	Reduce 51.77%
Bank of New York Mellon Corp	0.87%	$30.9M	0.01%	Not reported
Morgan Stanley	0.84%	$29.8M	0.00%	Not reported
Balyasny Asset Management L.P.	0.84%	$29.7M	0.04%	Not reported
Kryger Capital LLC	0.82%	$29.1M	1.66%	New Not reported
Allianz Asset Management GmbH	0.80%	$28.3M	0.03%	Not reported
Northern Trust Corp	0.79%	$28.2M	0.00%	Not reported
Vanguard Fiduciary Trust Co	0.63%	$22.5M	0.00%	Not reported
Invesco Ltd.	0.63%	$22.2M	0.00%	Not reported
Westchester Capital Management, LLC	0.54%	$19.3M	0.95%	New Not reported
TIG Advisors, LLC	0.53%	$19M	0.84%	Not reported
Water Island Capital LLC	0.52%	$18.6M	1.73%	New Not reported
Alpine Associates Management Inc.	0.51%	$18.2M	1.14%	New Not reported
Principal Financial Group Inc	0.48%	$17.1M	0.01%	Not reported
AQR Capital Management LLC	0.47%	$16.8M	0.01%	Not reported
FMR LLC	0.45%	$16.1M	0.00%	Not reported
Gotham Asset Management, LLC	0.39%	$14M	0.03%	Reduce 17.88%
Cerity Partners LLC	0.38%	$13.7M	0.02%	Not reported
Gabelli Funds LLC	0.36%	$12.9M	0.08%	Not reported
Polar Asset Management Partners Inc.	0.36%	$12.9M	0.21%	Not reported
Public Sector Pension Investment Board	0.34%	$12.2M	0.03%	Reduce 3.00%
Healthcare of Ontario Pension Plan Trust Fund	0.32%	$11.3M	0.02%	New Not reported
Marshall Wace, LLP	0.32%	$11.2M	0.01%	Not reported
Groupe la Francaise	0.30%	$10.5M	0.13%	New Not reported
Hotchkis & Wiley Capital Management LLC	0.28%	$10.1M	0.03%	Reduce 45.98%
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	0.28%	$10M	0.00%	Not reported
Brandes Investment Partners, LP	0.28%	$9.88M	0.07%	Add 5.48%
D. E. Shaw & Co., Inc.	0.27%	$9.73M	0.00%	Not reported
Tokio Marine Asset Management Co Ltd	0.27%	$9.53M	0.30%	New Not reported

50 of 593 holders

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