Who Owns Atossa Therapeutics, Inc. (ATOS)?Hedge Fund & Institutional Holders
Institutional Holders
4
as of Q4 2025
Total Institutional Value
$391.9M
% of Float Held
—
QoQ Change in Holders
+1 / -0
Price History
ATOS — Biggest New Institutional Buyers This Quarter
| Fund | Action | Shares Added | Value Added |
|---|---|---|---|
| MARSHALL WACE, LLP | New Position | +28K | +$0 |
Top Institutional Holders(Q4 2025)
| # | Fund | Shares | Value | % of Portfolio | Type |
|---|---|---|---|---|---|
| 1 | GROUP ONE TRADING LLC | 67,300 | $39K | 0.00% | Call |
| 2 | GROUP ONE TRADING LLC | 33,600 | $19K | 0.00% | Put |
| 3 | SIMPLEX TRADING, LLC | 87,300 | $0 | 0.00% | Call |
| 4 | MARSHALL WACE, LLP | 28,072 | $0 | 0.00% | Share |
Similar Stocks by Institutional Ownership
As of Q4 2025, 4 institutional investors hold ATOS (Atossa Therapeutics, Inc.). The largest holder is GROUP ONE TRADING LLC with $39K in shares. This quarter, 1 institutions opened new positions and 0 closed their positions.
Frequently Asked Questions
How many hedge funds own ATOS?
As of Q4 2025, 4 institutional investors report holding ATOS (Atossa Therapeutics, Inc.) in their 13F filings.
Who is the largest institutional holder of ATOS?
The largest institutional holder of ATOS is GROUP ONE TRADING LLC with $39K in shares.
Is institutional ownership of ATOS increasing or decreasing?
This quarter, 1 institutions opened new positions in ATOS and 0 closed their positions.