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CastleKnight Management’s Organon & Co OGN Stock Holding History

CastleKnight Management’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
2025
Q4 		– Sell
-121,500
Closed -$1.3M – 451
2025
Q3 		$1.3M Hold
121,500
– – 0.03% 287
2025
Q2 		$1.18M Buy
+121,500
New +$1.25M 0.03% 272

Other funds holding OGN

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return
LSV Asset Management
LSV Asset Management Chicago, Illinois $55.1B AUM 45.38% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $315B AUM 27.84% 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
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
KBG
Kahn Brothers Group New York $633M AUM 39.01% 1-Year Est. Return

CastleKnight Management's OGN Position: Q4 2025 in Review

CastleKnight Management sold out of Organon & Co (OGN) in Q4 2025, closing a stake of 121,500 shares — an estimated $1.3M sold.

CastleKnight Management first reported a position in OGN in Q2 2025 and held it in 2 quarters. The position peaked at $1.3M in Q3 2025. 634 funds tracked by Wall St. Rank hold OGN as of Q4 2025.

  • CastleKnight Management reported no remaining Organon & Co position as of Q4 2025 after selling out during the quarter.
  • CastleKnight Management sold 121,500 Organon & Co shares in Q4 2025, an estimated $1.3M.
  • CastleKnight Management first reported a position in Organon & Co in Q2 2025 and held it in 2 quarters.
  • CastleKnight Management's Organon & Co position peaked at $1.3M in Q3 2025.
  • 634 funds tracked by Wall St. Rank held Organon & Co as of Q4 2025.

Based on CastleKnight Management's 13F filing for Q4 2025, filed 17 Feb 2026.