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 Q2	–	Sell	-426	Closed	-$11.2K	–	12151
2026 Q1	$11.2K	Buy	426 +235	+123%	+$29.5K	﹤0.01%	11294
2025 Q4	$47.4K	Sell	191 -64	-25%	-$14.6K	﹤0.01%	10522
2025 Q3	$53.7K	Buy	+255	New	+$45K	﹤0.01%	10333
2023 Q4	–	Sell	-499	Closed	-$33.2K	–	9409
2023 Q3	$33.2K	Buy	+499	New	+$46K	﹤0.01%	8230
2023 Q1	–	Sell	-226	Closed	-$39.3K	–	9352
2022 Q4	$39.3K	Buy	+226	New	+$149K	﹤0.01%	8439
2020 Q4	–	Sell	-221	Closed	-$220K	–	7713
2020 Q3	$220K	Buy	+221	New	+$234K	﹤0.01%	6310

Other funds holding GOSS

Context Capital Management Lajolla, California $4.89B AUM 1.86% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.32T AUM 44.66% 1-Year Est. Return

Worth Venture Partners Fort Lee, New Jersey $38.9M AUM 12.3% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return

Siren LLC Greenwich, Connecticut $4.23B AUM 121.47% 1-Year Est. Return

Squarepoint New York $90.8B AUM 26.98% 1-Year Est. Return

State Street Boston, Massachusetts $3.44T AUM 36.12% 1-Year Est. Return

MB Generational Wealth Spokane, Washington $196M AUM 14.53% 1-Year Est. Return

Renaissance Technologies New York $73.4B AUM 32.8% 1-Year Est. Return

Monaco Asset Management Monaco $818M AUM 32.61% 1-Year Est. Return

Jane Street's GOSS Position: Q3 2026 in Review

Jane Street opened a new position in Gossamer Bio (GOSS) in Q3 2026: 37,652 shares worth $446K. The stake represents ﹤0.01% of the portfolio and ranks #8282 among its holdings. This is a return to the name: Jane Street previously reported a position in GOSS as recently as Q4 2025.

Jane Street first reported a position in GOSS in Q3 2020 and has held it in 20 quarters since. The position peaked at $1.85M in Q3 2025. 37 funds tracked by Wall St. Rank hold GOSS as of Q3 2026.

Jane Street held 37,652 shares of Gossamer Bio worth $446K as of Q3 2026.
Gossamer Bio was a new Jane Street position in Q3 2026.
Gossamer Bio made up ﹤0.01% of Jane Street's portfolio in Q3 2026, its #8282 holding.
Jane Street first reported a position in Gossamer Bio in Q3 2020 and has held it in 20 quarters since.
Jane Street's Gossamer Bio position peaked at $1.85M in Q3 2025.
37 funds tracked by Wall St. Rank held Gossamer Bio as of Q3 2026.

Based on Jane Street's 13F filing for Q3 2026, filed 12 Nov 2026.