GAMCO Investors’s Organon & Co OGN Stock Holding History

GAMCO Investors’s Portfolio OGN Stock Details OGN Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$1.18M	Buy	+86,872	New	+$1.04M	0.01%	572
2025 Q4	–	Sell	-11,630	Closed	-$124K	–	1061
2025 Q3	$124K	Sell	11,630 -668	-5%	-$6.56K	﹤0.01%	1005
2025 Q2	$119K	Buy	+12,298	New	+$127K	﹤0.01%	1030
2024 Q3	–	Sell	-21,372	Closed	-$442K	–	885
2024 Q2	$442K	Hold	21,372	–	–	﹤0.01%	708
2024 Q1	$402K	Sell	21,372 -45	-0.2%	-$772	﹤0.01%	720
2023 Q4	$309K	Sell	21,417 -20	-0.1%	-$272	﹤0.01%	757
2023 Q3	$372K	Hold	21,437	–	–	﹤0.01%	713
2023 Q2	$446K	Hold	21,437	–	–	﹤0.01%	693
2023 Q1	$504K	Hold	21,437	–	–	0.01%	689
2022 Q4	$599K	Hold	21,437	–	–	0.01%	674
2022 Q3	$502K	Sell	21,437 -2,000	-9%	-$60.4K	0.01%	684
2022 Q2	$791K	Sell	23,437 -3,000	-11%	-$105K	0.01%	621
2022 Q1	$923K	Sell	26,437 -10,000	-27%	-$342K	0.01%	626
2021 Q4	$1.11M	Hold	36,437	–	–	0.01%	610
2021 Q3	$1.2M	Buy	36,437 +1,637	+5%	+$52.4K	0.01%	604
2021 Q2	$1.05M	Buy	+34,800	New	+$1.15M	0.01%	636

Other funds holding OGN

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

PCM

Pentwater Capital Management Naples, Florida $16.4B AUM 55.44% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return

UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Man Group London, United Kingdom $62.7B AUM 29.77% 1-Year Est. Return

AQR Arbitrage Greenwich, Connecticut $7.02B AUM 31.58% 1-Year Est. Return

GAMCO Investors's OGN Position: Q2 2026 in Review

GAMCO Investors opened a new position in Organon & Co (OGN) in Q2 2026: 86,872 shares worth $1.18M. The stake represents 0.01% of the portfolio and ranks #572 among its holdings. This is a return to the name: GAMCO Investors previously reported a position in OGN as recently as Q3 2025.

GAMCO Investors first reported a position in OGN in Q2 2021 and has held it in 16 quarters since. The position peaked at $1.2M in Q3 2021. 631 funds tracked by Wall St. Rank hold OGN as of Q2 2026.

GAMCO Investors held 86,872 shares of Organon & Co worth $1.18M as of Q2 2026.
Organon & Co was a new GAMCO Investors position in Q2 2026.
Organon & Co made up 0.01% of GAMCO Investors's portfolio in Q2 2026, its #572 holding.
GAMCO Investors first reported a position in Organon & Co in Q2 2021 and has held it in 16 quarters since.
GAMCO Investors's Organon & Co position peaked at $1.2M in Q3 2021.
631 funds tracked by Wall St. Rank held Organon & Co as of Q2 2026.

Based on GAMCO Investors's 13F filing for Q2 2026, filed 12 Aug 2026.