Position in MLYS
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$75,111,196
-$25,508,417 QoQ
Shares Held
2,772,654
0.0% QoQ
Ownership
3.14%
of shares outstanding
% of Portfolio
5.31%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Jun 2024
8 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in MLYS Over Time
Shares Held
Position Value (USD)
Derivatives in MLYS
reported options exposure · as of Dec 31, 2025CallValue
$0
CallShares
0
PutValue
$83,408,936
PutShares
2,298,400
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, 2026Caligan Partners LP holds $1,404,383,722 across 23 Biotechnology names.
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | RVMD |
Revolution Medicines, Inc.
|
1,961,795 | $367,404,967 | |
| 2 | ABVX |
Abivax S.A.
|
1,557,924 | $207,608,952 | |
| 3 | PCVX |
Vaxcyte, Inc.
|
2,188,636 | $127,225,410 | |
| 4 | EXEL |
Exelixis, Inc.
|
1,553,262 | $84,512,985 | |
| 5 | TNGX |
Tango Therapeutics, Inc.
|
2,500,103 | $78,153,219 | |
| 6 | AVTX |
Avalo Therapeutics, Inc.
|
3,163,866 | $58,468,243 | |
| 7 | XENE |
Xenon Pharmaceuticals Inc.
|
889,944 | $53,717,019 | |
| 8 | ADMA |
Adma Biologics, Inc.
|
5,725,007 | $47,918,308 |
All Filings in MLYS
Export CSV
9 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $75,111,196 | 2,772,654 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $100,619,613 | 2,772,654 | Shares | Sole | 2026-02-17 | |
| 2025-12-31 | $83,408,936 | 2,298,400 | Put | Sole | 2026-02-17 | |
| 2025-09-30 | $105,139,039 | 2,772,654 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $27,294,772 | 2,017,352 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $34,136,711 | 2,149,667 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $12,447,318 | 1,011,155 | Shares | Sole | 2025-02-14 | |
| 2024-09-30 | $11,881,787 | 981,155 | Shares | Sole | 2024-11-14 | |
| 2024-06-30 | $8,725,368 | 745,758 | Shares | Sole | 2024-08-14 | |
| No filing history on record for this holder in this stock. | ||||||