Position in INSM
as of Mar 31, 2026
· filed May 15, 2026
Position Value
$207,630,174
-$10,540,800 QoQ
Shares Held
1,269,754
+1.3% QoQ
Ownership
0.586%
of shares outstanding
% of Portfolio
4.20%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Mar 2021
5 quarters on record
Voting authority
Sole 100.ToString("F0")%
Shared 0.ToString("F0")%
None 0.ToString("F0")%
Common Shares in INSM Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Mar 31, 2026Castle Hook Partners LP holds $241,004,984 across 2 Biotechnology names. INSM ranks #1 (86.2% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | INSM |
INSMED Inc
This page
|
1,269,754 | $207,630,174 | |
| 2 | NAMS |
NewAmsterdam Pharma Co N.V.
|
1,042,637 | $33,374,810 |
All Filings in INSM
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5 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $207,630,174 | 1,269,754 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $218,170,974 | 1,253,568 | Shares | Sole | 2026-02-17 | |
| 2025-09-30 | $157,173,234 | 1,091,405 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $45,555,299 | 452,656 | Shares | Sole | 2025-08-14 | |
| 2021-03-31 | $7,420,652 | 217,870 | Shares | Sole | 2021-05-14 | |
| No filing history on record for this holder in this stock. | ||||||