ATOSSA THERAPEUTICS INC (ATOS)
Institutional ownership reported to the SEC as of Q2 2026, across 31 quarters.
35
Reporting holders
$2.8M
Reported value
14.9%
Of shares outstanding
4.2%
Held as options
+2
Holder change
Institutions report 1,490,802 shares against 9,979,298 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC | $698.2K | 361,747 | 0.00% | 2q | +3.6%+$24.4K |
| AMERIPRISE FINANCIAL INC | $498.4K | 258,234 | 0.00% | 2q | -49.4%-$486.4K |
| BlackRock, Inc. | $317.2K | 164,358 | 0.00% | 2q | +23.4%+$60.2K |
| RENAISSANCE TECHNOLOGIES LLC | $254.8K | 132,043 | 0.00% | 2q | +21.1%+$44.5K |
| GEODE CAPITAL MANAGEMENT, LLC | $178.3K | 92,382 | 0.00% | 2q | -4.8%-$9.0K |
| UBS Group AG | $159.5K | 82,620 | 0.00% | 2q | -10.2%-$18.2K |
| Aster Capital Management (DIFC) Ltd | $120.2K | 144,853 | 0.01% | new | NEW |
| JANE STREET GROUP, LLC | $109.2K | 56,602 | 0.00% | new | NEW |
| VANGUARD FIDUCIARY TRUST CO | $101.5K | 52,583 | 0.00% | 2q | +0.7% |
| MILLENNIUM MANAGEMENT LLC | $89.8K | 46,508 | 0.00% | 2q | -30.3%-$39.0K |
| SIMPLEX TRADING, LLC | $89.0K | options only | 0.00% | 2q | OPTIONS |
| STATE STREET CORP | $76.7K | 39,761 | 0.00% | 2q | HELD |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $51.9K | 15,574 | 0.00% | 2q | HELD |
| NORTHERN TRUST CORP | $39.1K | 20,249 | 0.00% | 2q | +5.3%+$2.0K |
| MORGAN STANLEY | $23.8K | 12,345 | 0.00% | 2q | -23.8%-$7.4K |
| GROUP ONE TRADING LLC | $8.0K | 54 | 0.00% | 2q | -91.1%-$82.4K |
| Vanguard Global Advisers, LLC | $6.0K | 3,089 | 0.00% | 2q | HELD |
| ROYAL BANK OF CANADA | $4.0K | 1,994 | 0.00% | 2q | +209.6%+$2.7K |
| JONES FINANCIAL COMPANIES LLLP | $3.9K | 2,061 | 0.00% | 2q | HELD |
| MCF Advisors LLC | $2.1K | 1,066 | 0.00% | new | NEW |
| MERCER GLOBAL ADVISORS INC /ADV | $1.3K | 666 | 0.00% | new | NEW |
| OSAIC HOLDINGS, INC. | $1.1K | 587 | 0.00% | 2q | HELD |
| JPMORGAN CHASE & CO | $772 | 390 | 0.00% | 2q | +1.8% |
| Rockefeller Capital Management L.P. | $643 | 333 | 0.00% | 2q | -5.7% |
| WELLS FARGO & COMPANY/MN | $440 | 228 | 0.00% | 2q | -61.5% |
| SBI Securities Co., Ltd. | $286 | 148 | 0.00% | 2q | +31.0% |
| HARBOUR INVESTMENTS, INC. | $212 | 110 | 0.00% | 2q | HELD |
| TD Waterhouse Canada Inc. | $210 | 103 | 0.00% | 2q | HELD |
| BNP PARIBAS FINANCIAL MARKETS | $168 | 87 | 0.00% | 2q | -11.2% |
| Caitong International Asset Management Co., Ltd | $12 | 6 | 0.00% | new | NEW |
| Napier Financial, LLC | $12 | 6 | 0.00% | 2q | HELD |
| Bogart Wealth, LLC | $10 | 5 | 0.00% | 2q | HELD |
| Clearstead Advisors, LLC | $8 | 4 | 0.00% | 2q | HELD |
| FMR LLC | $0 | 0 | 0.00% | new | NEW |
| BESSEMER GROUP INC | $0 | 6 | 0.00% | new | NEW |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 35 | $2.8M | 1,490,802 | 7 | 8 | 9 | 4.2% |
| Q1 2026 | 33 | $8.9M | 1,494,758 | 33 | 0 | 0 | 11.6% |
| Q4 2025 | 63 | $13.1M | 21,871,500 | 15 | 19 | 7 | 1.7% |
| Q3 2025 | 60 | $16.8M | 18,947,468 | 7 | 11 | 24 | 2.0% |
| Q2 2025 | 76 | $17.7M | 21,102,735 | 23 | 13 | 23 | 1.2% |
| Q1 2025 | 76 | $19.1M | 28,225,674 | 9 | 17 | 27 | 0.8% |
| Q4 2024 | 76 | $28.0M | 29,442,929 | 4 | 24 | 21 | 0.8% |
| Q3 2024 | 79 | $42.5M | 27,273,748 | 15 | 17 | 21 | 2.3% |
| Q2 2024 | 71 | $31.8M | 26,090,297 | 23 | 20 | 13 | 2.3% |
| Q1 2024 | 57 | $34.6M | 18,887,398 | 16 | 13 | 8 | 1.6% |
| Q4 2023 | 45 | $13.1M | 14,304,542 | 3 | 7 | 17 | 3.6% |
| Q3 2023 | 47 | $10.9M | 14,425,236 | 5 | 9 | 12 | 2.7% |
| Q2 2023 | 47 | $18.8M | 14,493,535 | 8 | 7 | 12 | 3.0% |
| Q1 2023 | 40 | $11.0M | 14,847,551 | 2 | 4 | 15 | 2.5% |
| Q4 2022 | 43 | $8.7M | 15,164,427 | 8 | 8 | 8 | 8.3% |
| Q3 2022 | 52 | $18.1M | 19,020,802 | 4 | 5 | 24 | 12.3% |
| Q2 2022 | 68 | $29.4M | 23,276,847 | 16 | 8 | 28 | 13.5% |
| Q1 2022 | 80 | $50.9M | 35,902,011 | 8 | 14 | 36 | 10.7% |
| Q4 2021 | 94 | $79.3M | 39,557,391 | 15 | 23 | 26 | 19.7% |
| Q3 2021 | 98 | $152.7M | 31,086,087 | 17 | 28 | 28 | 33.1% |
| Q2 2021 | 96 | $382.0M | 35,744,776 | 59 | 21 | 8 | 40.9% |
| Q1 2021 | 58 | $37.6M | 10,829,339 | 44 | 8 | 3 | 39.3% |
| Q4 2020 | 14 | $1.8M | 1,690,321 | 3 | 4 | 1 | 11.1% |
| Q3 2020 | 22 | $1.9M | 738,286 | 11 | 3 | 3 | 5.1% |
| Q2 2020 | 12 | $1.3M | 311,346 | 7 | 1 | 2 | 9.1% |
| Q1 2020 | 7 | $321.6K | 241,336 | 1 | 1 | 1 | 0.0% |
| Q4 2019 | 12 | $629.4K | 390,435 | 3 | 2 | 0 | 2.7% |
| Q3 2019 | 11 | $537.5K | 261,639 | 5 | 0 | 1 | 4.5% |
| Q2 2019 | 9 | $692.1K | 254,215 | 2 | 2 | 4 | 6.2% |
| Q1 2019 | 9 | $730.4K | 207,764 | 3 | 3 | 2 | 0.0% |
| Q4 2018 | 13 | $814.0K | 797,664 | 3 | 0 | 0 | 0.0% |