Jane Street’s Atossa Therapeutics ATOS Stock Holding History

Jane Street’s Portfolio ATOS Stock Details ATOS Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	–	Sell	-2,700	Closed	-$23.9K	–	11534
2025 Q4	$23.9K	Buy	+2,700	New	+$34.1K	﹤0.01%	10692
2022 Q3	–	Sell	-1,800	Closed	-$29K	–	9661
2022 Q2	$29K	Sell	1,800 -3,253	-64%	-$51.3K	﹤0.01%	9067
2022 Q1	$95K	Sell	5,053 -51,800	-91%	-$1.05M	﹤0.01%	9479
2021 Q4	$1.36M	Sell	56,853 -49,174	-46%	-$1.8M	﹤0.01%	5284
2021 Q3	$5.18M	Sell	106,027 -94,653	-47%	-$5.51M	﹤0.01%	2653
2021 Q2	$19M	Buy	200,680 +162,740	+429%	+$8.62M	0.01%	1107
2021 Q1	$1.2M	Buy	+37,940	New	+$1.39M	﹤0.01%	5103

Other funds holding ATOS

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Ameriprise Minneapolis, Minnesota $432B AUM 30.22% 1-Year Est. Return

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

Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return

Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

VFT

Vanguard Fiduciary Trust Malvern, Pennsylvania $396B AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Northern Trust Chicago, Illinois $757B AUM 28.64% 1-Year Est. Return

Jane Street's ATOS Position: Q1 2026 in Review

Jane Street sold out of Atossa Therapeutics (ATOS) in Q1 2026, closing a stake of 16,400 shares — an estimated $145K sold.

Jane Street first reported a position in ATOS in Q3 2013 and held it in 22 quarters. The position peaked at $8.37M in Q2 2021. 33 funds tracked by Wall St. Rank hold ATOS as of Q1 2026.

Jane Street reported no remaining Atossa Therapeutics position as of Q1 2026 after selling out during the quarter.
Jane Street sold 16,400 Atossa Therapeutics shares in Q1 2026, an estimated $145K.
Jane Street first reported a position in Atossa Therapeutics in Q3 2013 and held it in 22 quarters.
Jane Street's Atossa Therapeutics position peaked at $8.37M in Q2 2021.
33 funds tracked by Wall St. Rank held Atossa Therapeutics as of Q1 2026.

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