Balyasny Asset Management’s Gossamer Bio GOSS Stock Holding History

Balyasny Asset 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
2026 Q1	$1.95M	Buy	5,922,298 +4,405,607	+290%	+$6.92M	﹤0.01%	1793
2025 Q4	$4.7M	Buy	1,516,691 +746,117	+97%	+$2.13M	0.01%	1426
2025 Q3	$2.03M	Buy	+770,574	New	+$1.7M	﹤0.01%	1783
2025 Q2	–	Sell	-289,265	Closed	-$318K	–	3021
2025 Q1	$318K	Buy	+289,265	New	+$334K	﹤0.01%	2431
2024 Q2	–	Sell	-98,036	Closed	-$116K	–	2770
2024 Q1	$116K	Buy	+98,036	New	+$108K	﹤0.01%	2486
2023 Q3	–	Sell	-14,690	Closed	-$17.6K	–	2437
2023 Q2	$17.6K	Buy	+14,690	New	+$18.3K	﹤0.01%	2160
2022 Q4	–	Sell	-46,728	Closed	-$560K	–	2948
2022 Q3	$560K	Buy	+46,728	New	+$580K	﹤0.01%	2001

Other funds holding GOSS

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

KCM

Kalehua Capital Management Dallas, Texas $141M AUM

AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

AVM

Arch Venture Management Chicago, Illinois $677M AUM 322.07% 1-Year Est. Return

OCA

Octagon Capital Advisors New York $904M AUM 737.04% 1-Year Est. Return

Samsara BioCapital Palo Alto, California $1.03B AUM 214.94% 1-Year Est. Return

Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return

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

Balyasny Asset Management's GOSS Position: Q1 2026 in Review

Balyasny Asset Management increased its Gossamer Bio (GOSS) stake by 290% in Q1 2026, buying an estimated $6.92M and bringing the position to 5,922,298 shares worth $1.95M. The position accounts for ﹤0.01% of the portfolio, ranked #1793.

Balyasny Asset Management first reported a position in GOSS in Q3 2022 and has held it in 7 quarters since. The position peaked at $4.7M in Q4 2025. 184 funds tracked by Wall St. Rank hold GOSS as of Q1 2026.

Balyasny Asset Management held 5,922,298 shares of Gossamer Bio worth $1.95M as of Q1 2026.
Balyasny Asset Management bought 4,405,607 Gossamer Bio shares in Q1 2026, an estimated $6.92M.
Gossamer Bio made up ﹤0.01% of Balyasny Asset Management's portfolio in Q1 2026, its #1793 holding.
Balyasny Asset Management first reported a position in Gossamer Bio in Q3 2022 and has held it in 7 quarters since.
Balyasny Asset Management's Gossamer Bio position peaked at $4.7M in Q4 2025.
184 funds tracked by Wall St. Rank held Gossamer Bio as of Q1 2026.

Based on Balyasny Asset Management's 13F filing for Q1 2026, filed 15 May 2026.