Jane Street
GOSS icon

Jane Street’s Gossamer Bio GOSS Stock Holding History

Jane Street’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 		$11.2K Buy
34,100
+18,800
+123% +$29.5K ﹤0.01% 11294
2025
Q4 		$47.4K Sell
15,300
-5,100
-25% -$14.6K ﹤0.01% 10522
2025
Q3 		$53.7K Buy
+20,400
New +$45K ﹤0.01% 10333
2023
Q4 		– Sell
-39,900
Closed -$33.2K – 9409
2023
Q3 		$33.2K Buy
+39,900
New +$46K ﹤0.01% 8230
2023
Q1 		– Sell
-18,100
Closed -$39.3K – 9352
2022
Q4 		$39.3K Buy
+18,100
New +$149K ﹤0.01% 8439
2020
Q4 		– Sell
-17,700
Closed -$220K – 7713
2020
Q3 		$220K Buy
+17,700
New +$235K ﹤0.01% 6310

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

Jane Street's GOSS Position: Q1 2026 in Review

Jane Street sold out of Gossamer Bio (GOSS) in Q1 2026, closing a stake of 155,591 shares — an estimated $245K sold.

Jane Street first reported a position in GOSS in Q3 2020 and held it in 19 quarters. The position peaked at $1.85M in Q3 2025. 184 funds tracked by Wall St. Rank hold GOSS as of Q1 2026.

  • Jane Street reported no remaining Gossamer Bio position as of Q1 2026 after selling out during the quarter.
  • Jane Street sold 155,591 Gossamer Bio shares in Q1 2026, an estimated $245K.
  • Jane Street first reported a position in Gossamer Bio in Q3 2020 and held it in 19 quarters.
  • Jane Street's Gossamer Bio position peaked at $1.85M in Q3 2025.
  • 184 funds tracked by Wall St. Rank held Gossamer Bio as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.