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, Q2 2026
Institutional positions in Atossa Therapeutics, Inc. as of Jun 30, 2026. 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
- 31
- −2 vs. Q1 2026
- Shares held
- 1.35M
- +105.3K (+8.5%) vs. Q1 2026
- Total value
- $2.60M
- −$3.92M (−60.2%) vs. Q1 2026
- New holders
- 5
- 9 more added
- Sold out
- 7
- 8 more reduced
Compare with Q1 2026: 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 | $16.9M |
| Q2 2025 | 84 | $17.7M |
| Q1 2025 | 83 | $19.1M |
| Q4 2024 | 86 | $28.3M |
| Q3 2024 | 86 | $41.8M |
| Q2 2024 | 77 | $31.2M |
| Q1 2024 | 67 | $37.4M |
| Q4 2023 | 49 | $14.2M |
| 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 | $64.2M |
| Q3 2021 | 93 | $102.1M |
| Q2 2021 | 90 | $225.8M |
| Q1 2021 | 54 | $22.8M |
Institutions, Q2 2026
Shares, value and share of portfolio for each institution holding Atossa Therapeutics, Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Bessemer Group Inc | 6 | $0 | 0.00% | +6 | New |
| Clearstead Advisors, LLC | 4 | $8 | 0.00% | 00.0% | Unchanged |
| Bogart Wealth, LLC | 5 | $10 | 0.00% | 00.0% | Unchanged |
| Napier Financial, LLC | 6 | $12 | 0.00% | 00.0% | Unchanged |
| Caitong International Asset Management Co., Ltd | 6 | $12 | 0.00% | +6 | New |
| Group One Trading, L.P. | 54 | $104 | 0.00% | −555−91.1% | Reduced |
| BNP Paribas Arbitrage, SA | 87 | $168 | 0.00% | −11−11.2% | Reduced |
| TD Waterhouse Canada Inc. | 103 | $210 | 0.00% | 00.0% | Unchanged |
| Harbour Investments, Inc. | 110 | $212 | 0.00% | 00.0% | Unchanged |
| SBI Securities Co., Ltd. | 148 | $286 | 0.00% | +35+31.0% | Added |
| Wells Fargo & Company | 228 | $440 | 0.00% | −68−23.0% | Reduced |
| Rockefeller Capital Management L.P. | 333 | $643 | 0.00% | −20−5.7% | Reduced |
| JPMorgan Chase & Co | 390 | $772 | 0.00% | +7+1.8% | Added |
| Advisor Group Holdings, Inc. | 587 | $1.13K | 0.00% | 00.0% | Unchanged |
| MCF Advisors LLC | 1,066 | $2.06K | 0.00% | +1,066 | New |
| Jones Financial Companies LLLP | 2,061 | $3.88K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 1,994 | $4.00K | 0.00% | +1,350+209.6% | Added |
| Vanguard Global Advisers, LLC | 3,089 | $5.96K | 0.00% | 00.0% | Unchanged |
| Morgan Stanley | 12,345 | $23.8K | 0.00% | −3,857−23.8% | Reduced |
| Susquehanna International Group, LLP | 15,574 | $30.1K | 0.00% | +15,574 | New |
| Northern Trust Corp | 20,249 | $39.1K | 0.00% | +1,025+5.3% | Added |
| State Street Corp | 39,761 | $76.7K | 0.00% | 00.0% | Unchanged |
| Millennium Management LLC | 46,508 | $89.8K | 0.00% | −20,231−30.3% | Reduced |
| Vanguard Fiduciary Trust Co | 52,583 | $101.5K | 0.00% | +348+0.7% | Added |
| Jane Street Group, LLC | 56,602 | $109.2K | 0.00% | +56,602 | New |
| UBS Group AG | 82,620 | $159.5K | 0.00% | −9,414−10.2% | Reduced |
| Geode Capital Management, LLC | 92,382 | $178.3K | 0.00% | −4,679−4.8% | Reduced |
| Renaissance Technologies LLC | 132,043 | $254.8K | 0.00% | +23,036+21.1% | Added |
| BlackRock, Inc. | 164,358 | $317.2K | 0.00% | +31,189+23.4% | Added |
| Ameriprise Financial Inc | 258,234 | $498.4K | 0.00% | +3,100+1.2% | Added |
| Vanguard Capital Management LLC | 361,747 | $698.2K | 0.00% | +12,651+3.6% | Added |
| Tower Research Capital LLC (TRC) | 0 | $0 | 0.00% | −863−100.0% | Sold out |
| GWM Advisors LLC | 0 | $0 | 0.00% | −333−100.0% | Sold out |
| Avion Wealth | 0 | $0 | 0.00% | −318−100.0% | Sold out |
| Robinswood Financial LLC | 0 | $0 | 0.00% | −170−100.0% | Sold out |
| North Star Investment Management Corp. | 0 | $0 | 0.00% | −80−100.0% | Sold out |
| Northwestern Mutual Wealth Management Co | 0 | $0 | 0.00% | −46−100.0% | Sold out |
| Allworth Financial LP | 0 | $0 | 0.00% | −46−100.0% | Sold out |