Citadel Advisors
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Citadel Advisors’s Organon & Co OGN Stock Holding History

Citadel Advisors’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
Q1 		$2.4M Buy
400,700
+85,000
+27% +$640K ﹤0.01% 5708
2025
Q4 		$2.26M Buy
315,700
+28,100
+10% +$222K ﹤0.01% 5679
2025
Q3 		$3.07M Sell
287,600
-207,500
-42% -$2.04M ﹤0.01% 5272
2025
Q2 		$4.79M Buy
495,100
+129,700
+35% +$1.34M ﹤0.01% 4181
2025
Q1 		$5.44M Buy
365,400
+215,900
+144% +$3.32M ﹤0.01% 3731
2024
Q4 		$2.23M Sell
149,500
-77,800
-34% -$1.27M ﹤0.01% 5403
2024
Q3 		$4.35M Sell
227,300
-91,000
-29% -$1.89M ﹤0.01% 4174
2024
Q2 		$6.59M Sell
318,300
-200
-0.1% -$3.98K ﹤0.01% 3342
2024
Q1 		$5.99M Sell
318,500
-76,000
-19% -$1.3M ﹤0.01% 3656
2023
Q4 		$5.69M Buy
394,500
+79,200
+25% +$1.08M ﹤0.01% 3604
2023
Q3 		$5.47M Buy
315,300
+35,400
+13% +$738K ﹤0.01% 3517
2023
Q2 		$5.82M Buy
279,900
+44,600
+19% +$969K ﹤0.01% 3413
2023
Q1 		$5.53M Sell
235,300
-61,720
-21% -$1.66M ﹤0.01% 3640
2022
Q4 		$8.3M Buy
297,020
+80,580
+37% +$2.06M ﹤0.01% 3078
2022
Q3 		$5.07M Buy
216,440
+24,010
+12% +$725K ﹤0.01% 3844
2022
Q2 		$6.5M Sell
192,430
-48,500
-20% -$1.7M ﹤0.01% 3341
2022
Q1 		$8.42M Sell
240,930
-141,130
-37% -$4.83M ﹤0.01% 3244
2021
Q4 		$11.6M Sell
382,060
-30,360
-7% -$989K ﹤0.01% 2807
2021
Q3 		$13.5M Buy
412,420
+187,800
+84% +$6.01M ﹤0.01% 2588
2021
Q2 		$6.8M Buy
+224,620
New +$7.39M ﹤0.01% 3801

Other funds holding OGN

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
LSV Asset Management
LSV Asset Management Chicago, Illinois $46.4B AUM 27.74% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
KBG
Kahn Brothers Group New York $564M AUM 25.3% 1-Year Est. Return
Canada Pension Plan Investment Board
Canada Pension Plan Investment Board Toronto Ontario, Ontario, Canada $155B AUM 29.93% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
PMG
Private Management Group Irvine, California $3.47B AUM 13.39% 1-Year Est. Return

Citadel Advisors's OGN Position: Q1 2026 in Review

Citadel Advisors reduced its Organon & Co (OGN) stake by 3.1% in Q1 2026, selling an estimated $486K and leaving 1,998,390 shares worth $12M. The position accounts for ﹤0.01% of the portfolio, ranked #3008.

Citadel Advisors first reported a position in OGN in Q2 2021 and has held it in 20 quarters since. The position peaked at $116M in Q1 2024. 604 funds tracked by Wall St. Rank hold OGN as of Q1 2026.

  • Citadel Advisors held 1,998,390 shares of Organon & Co worth $12M as of Q1 2026.
  • Citadel Advisors sold 64,584 Organon & Co shares in Q1 2026, an estimated $486K.
  • Organon & Co made up ﹤0.01% of Citadel Advisors's portfolio in Q1 2026, its #3008 holding.
  • Citadel Advisors first reported a position in Organon & Co in Q2 2021 and has held it in 20 quarters since.
  • Citadel Advisors's Organon & Co position peaked at $116M in Q1 2024.
  • 604 funds tracked by Wall St. Rank held Organon & Co as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.