SUSQUEHANNA INTERNATIONAL GROUP, LLP
Position in ATOS — Atossa Therapeutics, Inc.
CIK 1446194
BALA CYNWYD, PA
Position in ATOS
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$30,057
+$30,057 QoQ
Shares Held
15,574
Ownership
0.156%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#12
of 31 holders
Holding Since
Jun 2020
25 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in ATOS Over Time
Shares Held
Position Value (USD)
Derivatives in ATOS
reported options exposure · as of Jun 30, 2026CallValue
$21,809
CallShares
11,300
PutValue
$0
PutShares
0
Notional value of option positions as reported on Form 13F. Calls and puts are disclosed separately and do not net against the common-share stake above.
Position in Biotechnology
Healthcare · as of Jun 30, 2026SUSQUEHANNA INTERNATIONAL GROUP, LLP holds $1,653,301,875 across 349 Biotechnology names. ATOS ranks #308 (0.0% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | ABVX |
Abivax S.A.
|
1,053,896 | $140,442,180 | |
| 2 | CYTK |
Cytokinetics Inc
|
1,549,458 | $131,998,327 | |
| 3 | REGN |
Regeneron Pharmaceuticals, Inc.
|
180,219 | $112,373,755 | |
| 4 | ALNY |
Alnylam Pharmaceuticals, Inc.
|
294,460 | $88,641,293 | |
| 5 | MDGL |
Madrigal Pharmaceuticals, Inc.
|
148,610 | $79,796,139 | |
| 6 | INSM |
INSMED Inc
|
729,354 | $77,763,723 | |
| 7 | VRTX |
Vertex Pharmaceuticals Inc / Ma
|
144,174 | $71,615,550 | |
| 8 | AGIO |
Agios Pharmaceuticals, Inc.
|
1,375,558 | $51,046,957 |
All Filings in ATOS
Export CSV
50 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $30,057 | 15,574 | Shares | Other | 2026-08-14 | |
| 2026-06-30 | $21,809 | 11,300 | Call | Other | 2026-08-14 | |
| 2026-03-31 | $289,300 | 55,000 | Put | Other | 2026-05-15 | |
| 2025-12-31 | $22,715 | 38,500 | Put | Other | 2026-02-17 | |
| 2025-12-31 | $343,725 | 582,587 | Shares | Other | 2026-02-17 | |
| 2025-09-30 | $191,053 | 219,602 | Shares | Other | 2025-11-14 | |
| 2025-09-30 | $32,277 | 37,100 | Put | Other | 2025-11-14 | |
| 2025-09-30 | $23,490 | 27,000 | Call | Other | 2025-11-14 | |
| 2025-06-30 | $227,349 | 273,915 | Shares | Other | 2025-08-14 | |
| 2025-06-30 | $29,714 | 35,800 | Put | Other | 2025-08-14 | |
| 2025-03-31 | $26,197 | 39,100 | Put | Other | 2025-05-14 | |
| 2025-03-31 | $295,024 | 440,335 | Shares | Other | 2025-05-14 | |
| 2024-12-31 | $68,338 | 72,700 | Put | Other | 2025-02-14 | |
| 2024-12-31 | $212,604 | 226,176 | Shares | Other | 2025-02-14 | |
| 2024-09-30 | $109,093 | 71,772 | Shares | Defined | 2024-11-14 | |
| 2024-09-30 | $108,072 | 71,100 | Put | Defined | 2024-11-14 | |
| 2024-09-30 | $548,264 | 360,700 | Call | Defined | 2024-11-14 | |
| 2024-06-30 | $381,276 | 320,400 | Call | Defined | 2024-08-15 | |
| 2024-06-30 | $63,070 | 53,000 | Put | Defined | 2024-08-15 | |
| 2024-03-31 | $73,440 | 40,800 | Call | Defined | 2024-05-07 | |
| 2024-03-31 | $47,700 | 26,500 | Put | Defined | 2024-05-07 | |
| 2024-03-31 | $489,807 | 272,115 | Shares | Defined | 2024-05-07 | |
| 2023-12-31 | $180,351 | 204,945 | Shares | Defined | 2024-02-14 | |
| 2023-12-31 | $59,664 | 67,800 | Call | Defined | 2024-02-14 | |
| 2023-09-30 | $13,764 | 18,600 | Call | Defined | 2023-11-14 | |
| 2023-09-30 | $183,892 | 248,504 | Shares | Defined | 2023-11-14 | |
| 2023-09-30 | $23,606 | 31,900 | Put | Defined | 2023-11-14 | |
| 2023-06-30 | $90,090 | 71,500 | Call | Defined | 2023-08-11 | |
| 2023-06-30 | $470,020 | 373,032 | Shares | Defined | 2023-08-11 | |
| 2023-03-31 | $76,062 | 105,642 | Shares | Defined | 2023-05-16 | |
| 2023-03-31 | $13,896 | 19,300 | Put | Defined | 2023-05-16 | |
| 2023-03-31 | $30,960 | 43,000 | Call | Defined | 2023-05-16 | |
| 2022-12-31 | $51,139 | 96,490 | Shares | Defined | 2023-02-14 | |
| 2022-12-31 | $99,693 | 188,100 | Call | Defined | 2023-02-14 | |
| 2022-12-31 | $13,727 | 25,900 | Put | Defined | 2023-02-14 | |
| 2022-09-30 | $131,306 | 158,200 | Put | Defined | 2022-11-14 | |
| 2022-09-30 | $245,431 | 295,700 | Call | Defined | 2022-11-14 | |
| 2022-06-30 | $85,076 | 78,052 | Shares | Defined | 2022-08-15 | |
| 2022-06-30 | $333,976 | 306,400 | Call | Defined | 2022-08-15 | |
| 2022-06-30 | $211,678 | 194,200 | Put | Defined | 2022-08-15 | |
| 2022-03-31 | $346,000 | 276,800 | Call | Defined | 2022-05-16 | |
| 2022-03-31 | $339,500 | 271,600 | Put | Defined | 2022-05-16 | |
| 2022-03-31 | $131,307 | 105,046 | Shares | Defined | 2022-05-16 | |
| 2021-12-31 | $885,280 | 553,300 | Call | Defined | 2022-04-05 | |
| 2021-12-31 | $115,430 | 72,144 | Shares | Defined | 2022-04-05 | |
| 2021-12-31 | $692,000 | 432,500 | Put | Defined | 2022-04-05 | |
| 2021-09-30 | $805,272 | 247,016 | Shares | Defined | 2021-11-15 | |
| 2021-09-30 | $4,960,090 | 1,521,500 | Call | Defined | 2021-11-15 | |
| 2021-09-30 | $2,797,080 | 858,000 | Put | Defined | 2021-11-15 | |
| 2021-06-30 | $20,334,600 | 3,217,500 | Put | Defined | 2021-08-11 | |
| No filing history on record for this holder in this stock. | ||||||