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Avidity Partners Management’s Organon & Co OGN Stock Holding History

Avidity Partners 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
Q3 		– Sell
-640,000
Closed -$6.2M – 57
2025
Q2 		$6.2M Buy
640,000
+105,000
+20% +$1.08M 1.23% 29
2025
Q1 		$7.97M Buy
+535,000
New +$8.23M 1.52% 23

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
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $315B AUM 27.84% 1-Year Est. Return
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
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return
GAM
Gotham Asset Management New York $43B AUM 34.97% 1-Year Est. Return

Avidity Partners Management's OGN Position: Q3 2025 in Review

Avidity Partners Management sold out of Organon & Co (OGN) in Q3 2025, closing a stake of 640,000 shares — an estimated $6.2M sold.

Avidity Partners Management first reported a position in OGN in Q1 2025 and held it in 2 quarters. The position peaked at $7.97M in Q1 2025. 670 funds tracked by Wall St. Rank hold OGN as of Q3 2025.

  • Avidity Partners Management reported no remaining Organon & Co position as of Q3 2025 after selling out during the quarter.
  • Avidity Partners Management sold 640,000 Organon & Co shares in Q3 2025, an estimated $6.2M.
  • Avidity Partners Management first reported a position in Organon & Co in Q1 2025 and held it in 2 quarters.
  • Avidity Partners Management's Organon & Co position peaked at $7.97M in Q1 2025.
  • 670 funds tracked by Wall St. Rank held Organon & Co as of Q3 2025.

Based on Avidity Partners Management's 13F filing for Q3 2025, filed 14 Nov 2025.