MIM
GOSS icon

Monashee Investment Management’s Gossamer Bio GOSS Stock Holding History

Monashee Investment 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 		– Sell
-1,000,000
Closed -$3.1M – 49
2025
Q4 		$3.1M Buy
+1,000,000
New +$2.85M 1.75% 21
2024
Q4 		– Sell
-859,854
Closed -$848K – 56
2024
Q3 		$848K Hold
859,854
– – 0.09% 100
2024
Q2 		$775K Sell
859,854
-2,600,000
-75% -$1.95M 0.1% 66
2024
Q1 		$4.08M Hold
3,459,854
– – 0.48% 35
2023
Q4 		$3.16M Sell
3,459,854
-1,844,358
-35% -$1.36M 0.56% 18
2023
Q3 		$4.42M Buy
+5,304,212
New +$6.11M 1.85% 17
2022
Q4 		– Sell
-693,477
Closed -$8.31M – 53
2022
Q3 		$8.31M Buy
+693,477
New +$8.61M 3.08% 3
2019
Q2 		– Sell
-150,000
Closed -$3.25M – 182
2019
Q1 		$3.25M Buy
+150,000
New +$3.13M 0.75% 39

Other funds holding GOSS

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
KCM
Kalehua Capital Management Dallas, Texas $141M AUM
AQR Capital Management
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
SB
Samsara BioCapital Palo Alto, California $1.03B AUM 214.94% 1-Year Est. Return
Balyasny Asset Management
Balyasny Asset Management Chicago, Illinois $77.1B AUM 42.89% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return
SL
Siren LLC Greenwich, Connecticut $3.61B AUM 203.3% 1-Year Est. Return

Monashee Investment Management's GOSS Position: Q1 2026 in Review

Monashee Investment Management sold out of Gossamer Bio (GOSS) in Q1 2026, closing a stake of 1,000,000 shares — an estimated $3.1M sold.

Monashee Investment Management first reported a position in GOSS in Q1 2019 and held it in 8 quarters. The position peaked at $8.31M in Q3 2022. 184 funds tracked by Wall St. Rank hold GOSS as of Q1 2026.

  • Monashee Investment Management reported no remaining Gossamer Bio position as of Q1 2026 after selling out during the quarter.
  • Monashee Investment Management sold 1,000,000 Gossamer Bio shares in Q1 2026, an estimated $3.1M.
  • Monashee Investment Management first reported a position in Gossamer Bio in Q1 2019 and held it in 8 quarters.
  • Monashee Investment Management's Gossamer Bio position peaked at $8.31M in Q3 2022.
  • 184 funds tracked by Wall St. Rank held Gossamer Bio as of Q1 2026.

Based on Monashee Investment Management's 13F filing for Q1 2026, filed 13 May 2026.