SUSQUEHANNA INTERNATIONAL GROUP, LLP
Position in IRON — Disc Medicine, Inc.
CIK 1446194
BALA CYNWYD, PA
Position in IRON
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$213,129
-$771,930 QoQ
Shares Held
2,914
-81.1% QoQ
Ownership
0.008%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#159
of 216 holders
Holding Since
Mar 2021
21 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in IRON Over Time
Shares Held
Position Value (USD)
Derivatives in IRON
reported options exposure · as of Jun 30, 2026CallValue
$5,383,104
CallShares
73,600
PutValue
$365,700
PutShares
5,000
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. IRON ranks #225 (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 IRON
Export CSV
42 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $5,383,104 | 73,600 | Call | Other | 2026-08-14 | |
| 2026-06-30 | $365,700 | 5,000 | Put | Other | 2026-08-14 | |
| 2026-06-30 | $213,129 | 2,914 | Shares | Other | 2026-08-14 | |
| 2026-03-31 | $2,346,598 | 36,700 | Call | Other | 2026-05-15 | |
| 2026-03-31 | $985,059 | 15,406 | Shares | Other | 2026-05-15 | |
| 2026-03-31 | $1,035,828 | 16,200 | Put | Other | 2026-05-15 | |
| 2025-12-31 | $1,627,905 | 20,500 | Put | Other | 2026-02-17 | |
| 2025-12-31 | $1,929,663 | 24,300 | Call | Other | 2026-02-17 | |
| 2025-12-31 | $739,227 | 9,309 | Shares | Other | 2026-02-17 | |
| 2025-09-30 | $2,155,331 | 32,617 | Shares | Other | 2025-11-14 | |
| 2025-09-30 | $475,776 | 7,200 | Put | Other | 2025-11-14 | |
| 2025-06-30 | $4,024,801 | 75,997 | Shares | Other | 2025-08-14 | |
| 2025-03-31 | $307,768 | 6,200 | Put | Other | 2025-05-14 | |
| 2025-03-31 | $3,521,511 | 70,941 | Shares | Other | 2025-05-14 | |
| 2024-12-31 | $1,229,960 | 19,400 | Put | Other | 2025-02-14 | |
| 2024-12-31 | $1,826,363 | 28,807 | Shares | Other | 2025-02-14 | |
| 2024-12-31 | $1,458,200 | 23,000 | Call | Other | 2025-02-14 | |
| 2024-09-30 | $211,302 | 4,300 | Put | Defined | 2024-11-14 | |
| 2024-09-30 | $449,925 | 9,156 | Shares | Defined | 2024-11-14 | |
| 2024-09-30 | $314,496 | 6,400 | Call | Defined | 2024-11-14 | |
| 2024-06-30 | $626,833 | 13,908 | Shares | Defined | 2024-08-15 | |
| 2024-06-30 | $211,829 | 4,700 | Call | Defined | 2024-08-15 | |
| 2024-03-31 | $777,751 | 12,492 | Shares | Defined | 2024-05-07 | |
| 2024-03-31 | $3,710,696 | 59,600 | Put | Defined | 2024-05-07 | |
| 2024-03-31 | $1,687,246 | 27,100 | Call | Defined | 2024-05-07 | |
| 2023-12-31 | $2,893,776 | 50,100 | Call | Defined | 2024-02-14 | |
| 2023-12-31 | $397,504 | 6,882 | Shares | Defined | 2024-02-14 | |
| 2023-06-30 | $211,210 | 4,757 | Shares | Defined | 2023-08-11 | |
| 2023-03-31 | $788,543 | 37,213 | Shares | Defined | 2023-05-16 | |
| 2022-12-31 | $367,965 | 18,500 | Call | Defined | 2023-02-14 | |
| 2022-09-30 GMTX | — | 16,600 | Call | Defined | 2022-11-14 | |
| 2022-06-30 GMTX | — | 29,002 | Shares | Defined | 2022-08-15 | |
| 2022-06-30 GMTX | — | 14,600 | Put | Defined | 2022-08-15 | |
| 2022-03-31 GMTX | — | 16,633 | Shares | Defined | 2022-05-16 | |
| 2021-12-31 GMTX | — | 15,700 | Put | Defined | 2022-04-05 | |
| 2021-12-31 GMTX | — | 46,155 | Shares | Defined | 2022-04-05 | |
| 2021-09-30 GMTX | — | 100,332 | Shares | Defined | 2021-11-15 | |
| 2021-09-30 GMTX | — | 70,900 | Call | Defined | 2021-11-15 | |
| 2021-09-30 GMTX | — | 17,400 | Put | Defined | 2021-11-15 | |
| 2021-06-30 GMTX | — | 21,200 | Put | Defined | 2021-08-11 | |
| 2021-06-30 GMTX | — | 54,826 | Shares | Defined | 2021-08-11 | |
| 2021-03-31 GMTX | — | 43,361 | Shares | Defined | 2021-05-17 | |
| No filing history on record for this holder in this stock. | ||||||