SUSQUEHANNA INTERNATIONAL GROUP, LLP
Position in GOSS — Gossamer Bio, Inc.
CIK 1446194
BALA CYNWYD, PA
Position in GOSS
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$63,203
+$18,534 QoQ
Shares Held
383,049
+182.1% QoQ
Ownership
0.078%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#54
of 168 holders
Holding Since
Mar 2020
26 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in GOSS Over Time
Shares Held
Position Value (USD)
Derivatives in GOSS
reported options exposure · as of Jun 30, 2026CallValue
$193,347
CallShares
1,171,800
PutValue
$5,940
PutShares
36,000
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 $1,649,997,309 across 349 Biotechnology names. GOSS ranks #285 (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 GOSS
Export CSV
50 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $63,203 | 383,049 | Shares | Other | 2026-08-14 | |
| 2026-06-30 | $5,940 | 36,000 | Put | Other | 2026-08-14 | |
| 2026-06-30 | $193,347 | 1,171,800 | Call | Other | 2026-08-14 | |
| 2026-03-31 | $400,064 | 1,216,000 | Call | Other | 2026-05-15 | |
| 2026-03-31 | $44,669 | 135,773 | Shares | Other | 2026-05-15 | |
| 2026-03-31 | $78,005 | 237,100 | Put | Other | 2026-05-15 | |
| 2025-12-31 | $9,209,170 | 2,970,700 | Call | Other | 2026-02-17 | |
| 2025-12-31 | $859,940 | 277,400 | Put | Other | 2026-02-17 | |
| 2025-12-31 | $274,210 | 88,455 | Shares | Other | 2026-02-17 | |
| 2025-09-30 | $74,166 | 28,200 | Put | Other | 2025-11-14 | |
| 2025-09-30 | $8,683,208 | 3,301,600 | Call | Other | 2025-11-14 | |
| 2025-06-30 | $470,692 | 382,677 | Shares | Other | 2025-08-14 | |
| 2025-06-30 | $1,507,611 | 1,225,700 | Call | Other | 2025-08-14 | |
| 2025-03-31 | $1,067,550 | 970,500 | Call | Other | 2025-05-14 | |
| 2025-03-31 | $3,207,719 | 2,916,109 | Shares | Other | 2025-05-14 | |
| 2024-12-31 | $522,975 | 577,874 | Shares | Other | 2025-02-14 | |
| 2024-12-31 | $420,463 | 464,600 | Put | Other | 2025-02-14 | |
| 2024-12-31 | $154,755 | 171,000 | Call | Other | 2025-02-14 | |
| 2024-09-30 | $460,363 | 466,900 | Put | Defined | 2024-11-14 | |
| 2024-09-30 | $346,047 | 350,961 | Shares | Defined | 2024-11-14 | |
| 2024-09-30 | $63,202 | 64,100 | Call | Defined | 2024-11-14 | |
| 2024-06-30 | $87,757 | 97,400 | Call | Defined | 2024-08-15 | |
| 2024-06-30 | $436,894 | 484,900 | Put | Defined | 2024-08-15 | |
| 2024-06-30 | $300,568 | 333,594 | Shares | Defined | 2024-08-15 | |
| 2024-03-31 | $2,138,637 | 1,812,405 | Shares | Defined | 2024-05-07 | |
| 2024-03-31 | $116,466 | 98,700 | Call | Defined | 2024-05-07 | |
| 2024-03-31 | $569,114 | 482,300 | Put | Defined | 2024-05-07 | |
| 2023-12-31 | $586,602 | 642,500 | Put | Defined | 2024-02-14 | |
| 2023-12-31 | $456,337 | 499,822 | Shares | Defined | 2024-02-14 | |
| 2023-12-31 | $60,623 | 66,400 | Call | Defined | 2024-02-14 | |
| 2023-09-30 | $293,549 | 352,400 | Put | Defined | 2023-11-14 | |
| 2023-09-30 | $470,064 | 564,303 | Shares | Defined | 2023-11-14 | |
| 2023-09-30 | $102,459 | 123,000 | Call | Defined | 2023-11-14 | |
| 2023-06-30 | $899,977 | 749,982 | Shares | Defined | 2023-08-11 | |
| 2023-06-30 | $15,840 | 13,200 | Call | Defined | 2023-08-11 | |
| 2023-06-30 | $119,640 | 99,700 | Put | Defined | 2023-08-11 | |
| 2023-03-31 | $46,494 | 36,900 | Put | Defined | 2023-05-16 | |
| 2023-03-31 | $2,467,147 | 1,958,054 | Shares | Defined | 2023-05-16 | |
| 2023-03-31 | $185,346 | 147,100 | Call | Defined | 2023-05-16 | |
| 2022-12-31 | $584,819 | 269,502 | Shares | Defined | 2023-02-14 | |
| 2022-12-31 | $126,511 | 58,300 | Call | Defined | 2023-02-14 | |
| 2022-12-31 | $209,622 | 96,600 | Put | Defined | 2023-02-14 | |
| 2022-09-30 | $1,119,589 | 93,455 | Shares | Defined | 2022-11-14 | |
| 2022-09-30 | $3,609,574 | 301,300 | Call | Defined | 2022-11-14 | |
| 2022-09-30 | $1,729,912 | 144,400 | Put | Defined | 2022-11-14 | |
| 2022-06-30 | $2,938,707 | 351,100 | Call | Defined | 2022-08-15 | |
| 2022-06-30 | $145,638 | 17,400 | Put | Defined | 2022-08-15 | |
| 2022-03-31 | $452,071 | 52,082 | Shares | Defined | 2022-05-16 | |
| 2022-03-31 | $845,432 | 97,400 | Put | Defined | 2022-05-16 | |
| 2022-03-31 | $3,320,968 | 382,600 | Call | Defined | 2022-05-16 | |
| No filing history on record for this holder in this stock. | ||||||