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Two Sigma Securities’s Atossa Therapeutics ATOS Stock Holding History

Two Sigma Securities’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
-1,634
Closed -$14.5K – 1651
2025
Q4 		$14.5K Buy
+1,634
New +$20.7K ﹤0.01% 1235
2025
Q3 		– Sell
-1,481
Closed -$18.4K – 1388
2025
Q2 		$18.4K Buy
+1,481
New +$17.7K ﹤0.01% 1224
2025
Q1 		– Sell
-1,488
Closed -$21.1K – 1461
2024
Q4 		$21.1K Sell
1,488
-125
-8% -$2.44K ﹤0.01% 1307
2024
Q3 		$36.8K Buy
+1,613
New +$32.6K ﹤0.01% 2405
2024
Q2 		– Sell
-2,305
Closed -$62.2K – 2964
2024
Q1 		$62.2K Buy
+2,305
New +$37K ﹤0.01% 2542
2023
Q4 		– Sell
-2,431
Closed -$26.9K – 3010
2023
Q3 		$26.9K Buy
2,431
+752
+45% +$10.9K ﹤0.01% 2538
2023
Q2 		$31.7K Buy
+1,679
New +$20.4K ﹤0.01% 2452
2023
Q1 		– Sell
-2,562
Closed -$20.3K – 2640
2022
Q4 		$20.3K Buy
2,562
+26
+1% +$299 ﹤0.01% 2277
2022
Q3 		$32K Buy
2,536
+1,686
+198% +$24.5K ﹤0.01% 2240
2022
Q2 		$14K Buy
+850
New +$13.4K ﹤0.01% 2000
2019
Q1 		– Sell
-832
Closed -$13K – 1814
2018
Q4 		$13K Buy
+832
New +$16.5K ﹤0.01% 1994
2018
Q2 		– Sell
-77
Closed -$6K – 2630
2018
Q1 		$6K Buy
+77
New +$7.17K ﹤0.01% 2621
2017
Q4 		– Sell
-279
Closed -$27K – 1724
2017
Q3 		$27K Buy
+279
New +$22.1K ﹤0.01% 799
2016
Q2 		– Sell
-10
Closed -$9K – 424
2016
Q1 		$9K Buy
+10
New +$9.26K 0.01% 260

Other funds holding ATOS

VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Ameriprise
Ameriprise Minneapolis, Minnesota $432B AUM 30.22% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
VFT
Vanguard Fiduciary Trust Malvern, Pennsylvania $396B AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Northern Trust
Northern Trust Chicago, Illinois $757B AUM 28.64% 1-Year Est. Return

Two Sigma Securities's ATOS Position: Q1 2026 in Review

Two Sigma Securities sold out of Atossa Therapeutics (ATOS) in Q1 2026, closing a stake of 1,634 shares — an estimated $14.5K sold.

Two Sigma Securities first reported a position in ATOS in Q1 2016 and held it in 14 quarters. The position peaked at $62.2K in Q1 2024. 33 funds tracked by Wall St. Rank hold ATOS as of Q1 2026.

  • Two Sigma Securities reported no remaining Atossa Therapeutics position as of Q1 2026 after selling out during the quarter.
  • Two Sigma Securities sold 1,634 Atossa Therapeutics shares in Q1 2026, an estimated $14.5K.
  • Two Sigma Securities first reported a position in Atossa Therapeutics in Q1 2016 and held it in 14 quarters.
  • Two Sigma Securities's Atossa Therapeutics position peaked at $62.2K in Q1 2024.
  • 33 funds tracked by Wall St. Rank held Atossa Therapeutics as of Q1 2026.

Based on Two Sigma Securities's 13F filing for Q1 2026, filed 15 May 2026.