Adage Capital Partners
GOSS icon

Adage Capital Partners’s Gossamer Bio GOSS Stock Holding History

Adage Capital Partners’s Portfolio GOSS Stock Details GOSS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-726,800
Closed -$1.91M – 952
2025
Q3 		$1.91M Buy
+726,800
New +$1.6M ﹤0.01% 810
2022
Q4 		– Sell
-55,000
Closed -$659K – 1004
2022
Q3 		$659K Buy
+55,000
New +$683K ﹤0.01% 906

Other funds holding GOSS

NMC
NEA Management Company Timonium, Maryland $1.59B AUM 234.06% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
OCA
Octagon Capital Advisors New York $1.11B AUM 866.76% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
AVM
Arch Venture Management Chicago, Illinois $1.1B AUM 356.62% 1-Year Est. Return
SB
Samsara BioCapital Palo Alto, California $1.22B AUM 242.83% 1-Year Est. Return
SL
Siren LLC Greenwich, Connecticut $4.94B AUM 244.43% 1-Year Est. Return
6CM
683 Capital Management New York $2.04B AUM 94.26% 1-Year Est. Return
HA
HHLR Advisors Grand Cayman, Cayman Islands $832M AUM 32.38% 1-Year Est. Return

Adage Capital Partners's GOSS Position: Q4 2025 in Review

Adage Capital Partners sold out of Gossamer Bio (GOSS) in Q4 2025, closing a stake of 726,800 shares — an estimated $1.91M sold.

Adage Capital Partners first reported a position in GOSS in Q3 2022 and held it in 2 quarters. The position peaked at $1.91M in Q3 2025. 195 funds tracked by Wall St. Rank hold GOSS as of Q4 2025.

  • Adage Capital Partners reported no remaining Gossamer Bio position as of Q4 2025 after selling out during the quarter.
  • Adage Capital Partners sold 726,800 Gossamer Bio shares in Q4 2025, an estimated $1.91M.
  • Adage Capital Partners first reported a position in Gossamer Bio in Q3 2022 and held it in 2 quarters.
  • Adage Capital Partners's Gossamer Bio position peaked at $1.91M in Q3 2025.
  • 195 funds tracked by Wall St. Rank held Gossamer Bio as of Q4 2025.

Based on Adage Capital Partners's 13F filing for Q4 2025, filed 17 Feb 2026.