Atossa Therapeutics, Inc.
ATOS- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001488039
No open-market purchases or sales by Atossa Therapeutics, Inc. insiders were filed in the last 90 days; 31 institutions reported holding it in 13F filings for Q2 2026, worth $2.60M in total; no superinvestor holds it.
13F holders, Q4 2025
Institutional positions in Atossa Therapeutics, Inc. as of Dec 31, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 67
- +3 vs. Q3 2025
- Shares held
- 22.0M
- +2.66M (+13.8%) vs. Q3 2025
- Total value
- $13.0M
- −$3.78M (−22.6%) vs. Q3 2025
- New holders
- 14
- 20 more added
- Sold out
- 11
- 10 more reduced
3 institutions that held it in Q3 2025 haven't filed for Q4 2025 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting ATOS on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 31 | $2.60M |
| Q1 2026 | 33 | $6.52M |
| Q4 2025 | 67 | $13.0M |
| Q3 2025 | 67 | $16.8M |
| Q2 2025 | 84 | $17.7M |
| Q1 2025 | 83 | $19.1M |
| Q4 2024 | 86 | $28.3M |
| Q3 2024 | 86 | $41.6M |
| Q2 2024 | 77 | $31.2M |
| Q1 2024 | 67 | $34.6M |
| Q4 2023 | 49 | $14.1M |
| Q3 2023 | 54 | $11.9M |
| Q2 2023 | 52 | $20.2M |
| Q1 2023 | 45 | $11.9M |
| Q4 2022 | 51 | $9.49M |
| Q3 2022 | 59 | $15.8M |
| Q2 2022 | 73 | $25.4M |
| Q1 2022 | 83 | $45.4M |
| Q4 2021 | 92 | $63.3M |
| Q3 2021 | 93 | $102.1M |
| Q2 2021 | 90 | $225.8M |
| Q1 2021 | 54 | $22.8M |
Institutions, Q4 2025
Shares, value and share of portfolio for each institution holding Atossa Therapeutics, Inc.; share changes are against Q3 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Hantz Financial Services, Inc. | 82 | $0 | 0.00% | 00.0% | Unchanged |
| CWM, LLC | 50 | $0 | 0.00% | −175−77.8% | Reduced |
| SRS Capital Advisors, Inc. | 42 | $25 | 0.00% | 00.0% | Unchanged |
| Clearstead Advisors, LLC | 70 | $42 | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 83 | $49 | 0.00% | 00.0% | Unchanged |
| NBC Securities, Inc. | 150 | $88 | 0.00% | 00.0% | Unchanged |
| Nisa Investment Advisors, LLC | 350 | $207 | 0.00% | 00.0% | Unchanged |
| Northwestern Mutual Wealth Management Co | 500 | $295 | 0.00% | +500 | New |
| Jones Financial Companies LLLP | 700 | $413 | 0.00% | 00.0% | Unchanged |
| Allworth Financial LP | 702 | $415 | 0.00% | 00.0% | Unchanged |
| Optiver Holding B.V. | 838 | $494 | 0.00% | +838 | New |
| BNP Paribas Arbitrage, SA | 1,497 | $883 | 0.00% | +7+0.5% | Added |
| TD Waterhouse Canada Inc. | 1,555 | $910 | 0.00% | 00.0% | Unchanged |
| SBI Securities Co., Ltd. | 1,565 | $923 | 0.00% | −1−0.1% | Reduced |
| Harbour Investments, Inc. | 1,656 | $977 | 0.00% | −55−3.2% | Reduced |
| Royal Bank of Canada | 943 | $1.00K | 0.00% | +198+26.6% | Added |
| Robinswood Financial LLC | 2,557 | $1.51K | 0.00% | +2,557 | New |
| Huntington National Bank | 3,000 | $1.77K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 3,999 | $2.36K | 0.00% | +1,483+58.9% | Added |
| GWM Advisors LLC | 5,000 | $2.95K | 0.00% | 00.0% | Unchanged |
| Rockefeller Capital Management L.P. | 5,000 | $2.95K | 0.00% | 00.0% | Unchanged |
| Group One Trading, L.P. | 6,662 | $3.93K | 0.00% | +6,662 | New |
| FMR LLC | 7,365 | $4.34K | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 8,847 | $5.22K | 0.00% | 00.0% | Unchanged |
| Janney Montgomery Scott LLC | 10,000 | $6.00K | 0.00% | 00.0% | Unchanged |
| Focus Financial Network, Inc. | 10,350 | $6.11K | 0.00% | +200+2.0% | Added |
| J. L. Bainbridge & Co., Inc. | 11,121 | $6.56K | 0.00% | 00.0% | Unchanged |
| Bank of New York Mellon Corp | 11,147 | $6.58K | 0.00% | 00.0% | Unchanged |
| Raymond James Financial Inc | 11,323 | $6.68K | 0.00% | +508+4.7% | Added |
| Baader Bank INC | 21,364 | $7.77K | 0.00% | +21,364 | New |
| DnB Asset Management AS | 15,600 | $9.20K | 0.00% | 00.0% | Unchanged |
| Greenberg Financial Group | 18,216 | $10.7K | 0.00% | +18,216 | New |
| Two Sigma Advisers, LP | 18,300 | $10.8K | 0.00% | +18,300 | New |
| StoneX Group Inc. | 19,871 | $11.7K | 0.00% | +19,871 | New |
| LVM Capital Management Ltd | 21,000 | $12.0K | 0.00% | 00.0% | Unchanged |
| PFG Investments, LLC | 21,750 | $12.8K | 0.00% | +500+2.4% | Added |
| Two Sigma Investments, LP | 23,452 | $13.8K | 0.00% | +23,452 | New |
| Sigma Planning Corp | 24,000 | $14.2K | 0.00% | 00.0% | Unchanged |
| Two Sigma Securities, LLC | 24,508 | $14.5K | 0.00% | +24,508 | New |
| Marshall Wace, LLP | 28,072 | $16.6K | 0.00% | −57,004−67.0% | Reduced |
| R Squared Ltd | 28,099 | $16.6K | 0.01% | +28,099 | New |
| LPL Financial LLC | 29,469 | $17.4K | 0.00% | +913+3.2% | Added |
| Regions Financial Corp | 30,000 | $17.7K | 0.00% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 38,067 | $22.5K | 0.00% | −148−0.4% | Reduced |
| Wiley Bros.-Aintree Capital, LLC | 43,000 | $25.4K | 0.00% | +43,000 | New |
| Point72 Asset Management, L.P. | 48,092 | $28.4K | 0.00% | +48,092 | New |
| Morgan Stanley | 61,500 | $36.3K | 0.00% | −50,848−45.3% | Reduced |
| Bank of America Corp | 67,654 | $39.9K | 0.00% | −87,515−56.4% | Reduced |
| Qube Research & Technologies Ltd | 72,802 | $43.0K | 0.00% | −65,841−47.5% | Reduced |
| Acadian Asset Management LLC | 79,414 | $46.0K | 0.00% | −17,873−18.4% | Reduced |
| Charles Schwab Investment Management Inc | 80,000 | $47.2K | 0.00% | 00.0% | Unchanged |
| XTX Topco Ltd | 169,261 | $99.9K | 0.00% | +144,412+581.2% | Added |
| Graham Capital Management, L.P. | 211,369 | $124.7K | 0.00% | +45,923+27.8% | Added |
| Jane Street Group, LLC | 245,998 | $145.1K | 0.00% | +83,570+51.5% | Added |
| Connor, Clark & Lunn Investment Management Ltd. | 266,010 | $156.9K | 0.00% | +17,396+7.0% | Added |
| Northern Trust Corp | 288,399 | $170.2K | 0.00% | +25,022+9.5% | Added |
| UBS Group AG | 390,008 | $230.1K | 0.00% | +129,286+49.6% | Added |
| Susquehanna International Group, LLP | 582,587 | $343.7K | 0.00% | +362,985+165.3% | Added |
| State Street Corp | 596,485 | $351.9K | 0.00% | +141,990+31.2% | Added |
| Citadel Advisors LLC | 648,115 | $382.4K | 0.00% | +384,746+146.1% | Added |
| Jacobs Levy Equity Management, Inc | 1,048,289 | $618.5K | 0.00% | +1,048,289 | New |
| Millennium Management LLC | 1,242,868 | $733.3K | 0.00% | −425,780−25.5% | Reduced |
| Geode Capital Management, LLC | 1,371,909 | $809.6K | 0.00% | +9,627+0.7% | Added |
| BlackRock, Inc. | 1,997,627 | $1.18M | 0.00% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 2,062,838 | $1.22M | 0.00% | +514,175+33.2% | Added |
| Ameriprise Financial Inc | 3,791,061 | $2.24M | 0.00% | +839,556+28.4% | Added |
| Vanguard Group Inc | 6,147,838 | $3.63M | 0.00% | +68,994+1.1% | Added |
| Gsa Capital Partners LLP | 0 | $0 | 0.00% | −310,754−100.0% | Sold out |
| Squarepoint Ops LLC | 0 | $0 | 0.00% | −253,343−100.0% | Sold out |
| Commonwealth Equity Services, LLC | 0 | $0 | 0.00% | −46,001−100.0% | Sold out |
| Gallagher Capital Advisors, LLC | 0 | $0 | 0.00% | −31,575−100.0% | Sold out |
| NorthRock Partners, LLC | 0 | $0 | 0.00% | −16,750−100.0% | Sold out |
| Jain Global LLC | 0 | $0 | 0.00% | −16,707−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −16,932−100.0% | Sold out |
| Victory Capital Management Inc | 0 | $0 | 0.00% | −14,864−100.0% | Sold out |
| True Wealth Design, LLC | 0 | $0 | 0.00% | −29−100.0% | Sold out |
| EverSource Wealth Advisors, LLC | 0 | $0 | 0.00% | −2−100.0% | Sold out |
| Simplex Trading, LLC | 0 | $0 | 0.00% | −322−100.0% | Sold out |
| Point72 Asia (Singapore) Pte. Ltd. | – | – | – | – | Not filed |
| Wolverine Trading, LLC | – | – | – | – | Not filed |
| Point72 (DIFC) Ltd | – | – | – | – | Not filed |