HCM
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Highbridge Capital Management’s Gossamer Bio GOSS Stock Holding History

Highbridge Capital Management’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
Q3 		– Sell
-497,694
Closed -$612K – 317
2025
Q2 		$612K Hold
497,694
– – 0.02% 116
2025
Q1 		$547K Sell
497,694
-100,000
-17% -$116K 0.02% 96
2024
Q4 		$541K Hold
597,694
– – 0.02% 139
2024
Q3 		$590K Hold
597,694
– – 0.02% 129
2024
Q2 		$538K Hold
597,694
– – 0.02% 114
2024
Q1 		$705K Sell
597,694
-712,783
-54% -$785K 0.03% 109
2023
Q4 		$1.2M Sell
1,310,477
-1,720,829
-57% -$1.27M 0.05% 103
2023
Q3 		$2.52M Buy
+3,031,306
New +$3.49M 0.1% 93

Other funds holding GOSS

NMC
NEA Management Company Timonium, Maryland $1.76B AUM 223.33% 1-Year Est. Return
OCA
Octagon Capital Advisors New York $904M AUM 737.04% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
AVM
Arch Venture Management Chicago, Illinois $677M AUM 322.07% 1-Year Est. Return
SB
Samsara BioCapital Palo Alto, California $1.03B AUM 214.94% 1-Year Est. Return
PAI
Palo Alto Investors Palo Alto, California $654M AUM 77.8% 1-Year Est. Return
SL
Siren LLC Greenwich, Connecticut $3.61B AUM 203.3% 1-Year Est. Return
6CM
683 Capital Management New York $1.92B AUM 85.52% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return

Highbridge Capital Management's GOSS Position: Q3 2025 in Review

Highbridge Capital Management sold out of Gossamer Bio (GOSS) in Q3 2025, closing a stake of 497,694 shares — an estimated $612K sold.

Highbridge Capital Management first reported a position in GOSS in Q3 2023 and held it in 8 quarters. The position peaked at $2.52M in Q3 2023. 164 funds tracked by Wall St. Rank hold GOSS as of Q3 2025.

  • Highbridge Capital Management reported no remaining Gossamer Bio position as of Q3 2025 after selling out during the quarter.
  • Highbridge Capital Management sold 497,694 Gossamer Bio shares in Q3 2025, an estimated $612K.
  • Highbridge Capital Management first reported a position in Gossamer Bio in Q3 2023 and held it in 8 quarters.
  • Highbridge Capital Management's Gossamer Bio position peaked at $2.52M in Q3 2023.
  • 164 funds tracked by Wall St. Rank held Gossamer Bio as of Q3 2025.

Based on Highbridge Capital Management's 13F filing for Q3 2025, filed 10 Nov 2025.