Ken Griffin
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Ken Griffin’s Organon & Co OGN Stock Holding History

Ken Griffin’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 		$12M Sell
1,998,390
-64,584
-3% -$486K ﹤0.01% 3008
2025
Q4 		$14.8M Buy
2,062,974
+1,646,734
+396% +$13M ﹤0.01% 2722
2025
Q3 		$4.45M Sell
416,240
-5,046,170
-92% -$49.5M ﹤0.01% 4569
2025
Q2 		$52.9M Buy
5,462,410
+1,454,743
+36% +$15M 0.01% 1199
2025
Q1 		$59.7M Buy
4,007,667
+4,007,315
+1,138,442% +$61.6M 0.01% 1026
2024
Q4 		$5.25K Sell
352
-2,884,101
-100% -$47M ﹤0.01% 13879
2024
Q3 		$55.2M Buy
2,884,453
+1,162,145
+67% +$24.1M 0.01% 1122
2024
Q2 		$35.7M Sell
1,722,308
-4,454,702
-72% -$88.5M 0.01% 1436
2024
Q1 		$116M Buy
6,177,010
+1,966,914
+47% +$33.8M 0.02% 614
2023
Q4 		$60.7M Buy
4,210,096
+2,347,869
+126% +$31.9M 0.01% 1036
2023
Q3 		$32.3M Buy
1,862,227
+920,423
+98% +$19.2M 0.01% 1437
2023
Q2 		$19.6M Buy
941,804
+510,668
+118% +$11.1M ﹤0.01% 1906
2023
Q1 		$10.1M Sell
431,136
-950,688
-69% -$25.5M ﹤0.01% 2804
2022
Q4 		$38.6M Buy
1,381,824
+362,347
+36% +$9.26M 0.01% 1334
2022
Q3 		$23.9M Buy
1,019,477
+998,554
+4,773% +$30.1M 0.01% 1704
2022
Q2 		$706K Sell
20,923
-3,444
-14% -$121K ﹤0.01% 7853
2022
Q1 		$851K Sell
24,367
-17,913
-42% -$613K ﹤0.01% 8079
2021
Q4 		$1.29M Sell
42,280
-371,218
-90% -$12.1M ﹤0.01% 7282
2021
Q3 		$13.6M Buy
413,498
+359,938
+672% +$11.5M ﹤0.01% 2587
2021
Q2 		$1.62M Buy
+53,560
New +$1.76M ﹤0.01% 7127

Other funds holding OGN

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
LSV Asset Management
LSV Asset Management Chicago, Illinois $55.1B AUM 45.38% 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 $1.88T AUM 44.46% 1-Year Est. Return
PMG
Private Management Group Irvine, California $3.8B AUM 23.19% 1-Year Est. Return

Ken Griffin's OGN Position: Q1 2026 in Review

Ken Griffin 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.

Ken Griffin 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. 606 funds tracked by Wall St. Rank hold OGN as of Q1 2026.

  • Ken Griffin held 1,998,390 shares of Organon & Co worth $12M as of Q1 2026.
  • Ken Griffin sold 64,584 Organon & Co shares in Q1 2026, an estimated $486K.
  • Organon & Co made up ﹤0.01% of Ken Griffin's portfolio in Q1 2026, its #3008 holding.
  • Ken Griffin first reported a position in Organon & Co in Q2 2021 and has held it in 20 quarters since.
  • Ken Griffin's Organon & Co position peaked at $116M in Q1 2024.
  • 606 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.