Position in INSM
as of Mar 31, 2026
· filed May 14, 2026
Position Value
$78,489,600
+$171,600 QoQ
Shares Held
480,000
+6.7% QoQ
Ownership
0.221%
of shares outstanding
% of Portfolio
4.70%
of 13F equity value
Holder Rank
—
not a current holder
Holding Since
Jun 2024
8 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)
Derivatives in INSM
reported options exposure · as of Sep 30, 2025CallValue
$29,522,050
CallShares
205,000
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 Mar 31, 2026Affinity Asset Advisors, LLC holds $1,535,632,069 across 81 Biotechnology names. INSM ranks #4 (5.1% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | APGE |
Apogee Therapeutics, Inc.
|
1,284,926 | $108,152,221 | |
| 2 | XENE |
Xenon Pharmaceuticals Inc.
|
1,675,000 | $97,401,250 | |
| 3 | ERAS |
Erasca, Inc.
|
5,350,000 | $86,563,000 | |
| 4 | INSM |
INSMED Inc
This page
|
480,000 | $78,489,600 | |
| 5 | ROIV |
Roivant Sciences Ltd.
|
2,800,000 | $77,560,000 | |
| 6 | SYRE |
Spyre Therapeutics, Inc.
|
1,279,134 | $64,519,518 | |
| 7 | CNTA |
Centessa Pharmaceuticals plc
|
1,400,000 | $55,608,000 | |
| 8 | PRAX |
Praxis Precision Medicines, Inc.
|
170,000 | $54,772,300 |
All Filings in INSM
Export CSV
10 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-03-31 | $78,489,600 | 480,000 | Shares | Sole | 2026-05-14 | |
| 2025-12-31 | $78,318,000 | 450,000 | Shares | Sole | 2026-02-13 | |
| 2025-09-30 | $29,522,050 | 205,000 | Call | Sole | 2025-11-13 | |
| 2025-09-30 | $64,804,500 | 450,000 | Shares | Sole | 2025-11-13 | |
| 2025-06-30 | $47,804,000 | 475,000 | Shares | Sole | 2025-08-13 | |
| 2025-03-31 | $10,680,600 | 140,000 | Shares | Sole | 2025-05-14 | |
| 2024-12-31 | $3,452,000 | 50,000 | Shares | Sole | 2025-02-13 | |
| 2024-09-30 | $3,650,000 | 50,000 | Shares | Sole | 2024-11-13 | |
| 2024-06-30 | $582,900 | 8,700 | Put | Sole | 2024-08-14 | |
| 2024-06-30 | $8,375,000 | 125,000 | Shares | Sole | 2024-08-14 | |
| No filing history on record for this holder in this stock. | ||||||