Atossa Therapeutics
ATOS · NASDAQ
$2.54−$0.02 (−0.78%)TodayMarket closed ·
Prev close $2.56
Who owns ATOS
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 16.6% of ATOS’s shares.
- Heights Capital Management, Inc.3.8%
- Vanguard Capital Management, LLC3.6%
- Columbia Threadneedle Investments (US)2.6%
- BlackRock Institutional Trust Company, N.A.1.6%
- Next 6 largest institutions5.0%
- All other shareholders83.4%
| Holder | Shares | % of shares |
|---|---|---|
| Heights Capital Management, Inc. | 377.50K | 3.79% |
| Vanguard Capital Management, LLC | 361.75K | 3.63% |
| Columbia Threadneedle Investments (US) | 258.23K | 2.59% |
| BlackRock Institutional Trust Company, N.A. | 162.37K | 1.63% |
| Renaissance Technologies LLC | 132.04K | 1.32% |
| Geode Capital Management, L.L.C. | 92.38K | 0.93% |
| UBS Financial Services, Inc. | 82.62K | 0.83% |
| Quay (Steven C) | 67.41K | 0.68% |
| Daniel (Mark James CPA) | 63.00K | 0.63% |
| Jane Street Capital, L.L.C. | 56.60K | 0.57% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| Vanguard Total Stock Market Index Fund | 256.14K | 2.57% |
| Columbia Small Cap Value Discovery Fund | 201.43K | 2.02% |
| Vanguard Extended Market Index Fund | 99.07K | 0.99% |
| Fidelity Extended Market Index Fund | 44.97K | 0.45% |
| Columbia Var Port Small Cap Value Discovery Fd | 35.78K | 0.36% |
Insider trades
Form 4 filings by officers, directors and large holders
Insiders made no open-market buys or sales of ATOS in the last 6 months.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Chen Shu-Chih | Award | 10.00K | — |
| Remmel H. Lawrence | Award | 10.00K | — |
| Finn Jonathan | Award | 10.00K | — |
| Galli Stephen J | Award | 10.00K | — |
| Cigler Tessa | Award | 10.00K | — |
| Steinhart Richard I | Award | 10.00K | — |
Short interest
Settled Sep 30, 2026
- Shares short
- 788.33K
- Days to cover
- 11.31
- % of shares outstanding
- 7.91%
- Average daily volume
- 69.72K
- Change since last report
- +3.4%
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