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 		$3.18M Buy
531,000
+124,100
+30% +$934K ﹤0.01% 5149
2025
Q4 		$2.92M Sell
406,900
-24,500
-6% -$194K ﹤0.01% 5217
2025
Q3 		$4.61M Buy
431,400
+17,900
+4% +$176K ﹤0.01% 4510
2025
Q2 		$4M Buy
413,500
+103,500
+33% +$1.07M ﹤0.01% 4490
2025
Q1 		$4.62M Sell
310,000
-101,500
-25% -$1.56M ﹤0.01% 4003
2024
Q4 		$6.14M Buy
411,500
+183,600
+81% +$2.99M ﹤0.01% 3637
2024
Q3 		$4.36M Buy
227,900
+42,000
+23% +$871K ﹤0.01% 4171
2024
Q2 		$3.85M Sell
185,900
-56,100
-23% -$1.11M ﹤0.01% 4166
2024
Q1 		$4.55M Sell
242,000
-36,500
-13% -$626K ﹤0.01% 4087
2023
Q4 		$4.02M Buy
278,500
+195,900
+237% +$2.66M ﹤0.01% 4115
2023
Q3 		$1.43M Sell
82,600
-84,800
-51% -$1.77M ﹤0.01% 5859
2023
Q2 		$3.48M Sell
167,400
-500
-0.3% -$10.9K ﹤0.01% 4205
2023
Q1 		$3.95M Buy
167,900
+42,750
+34% +$1.15M ﹤0.01% 4182
2022
Q4 		$3.5M Sell
125,150
-18,220
-13% -$466K ﹤0.01% 4503
2022
Q3 		$3.35M Buy
143,370
+6,250
+5% +$189K ﹤0.01% 4582
2022
Q2 		$4.63M Sell
137,120
-66,460
-33% -$2.33M ﹤0.01% 3946
2022
Q1 		$7.11M Sell
203,580
-147,280
-42% -$5.04M ﹤0.01% 3520
2021
Q4 		$10.7M Buy
350,860
+42,760
+14% +$1.39M ﹤0.01% 2968
2021
Q3 		$10.1M Buy
308,100
+162,600
+112% +$5.2M ﹤0.01% 3063
2021
Q2 		$4.4M Buy
+145,500
New +$4.79M ﹤0.01% 4711

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.