Position in IRON
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$179,209,163
+$22,542,033 QoQ
Shares Held
2,450,221
0.0% QoQ
Ownership
6.38%
of shares outstanding
% of Portfolio
1.58%
of 13F equity value
Holder Rank
#3
of 216 holders
Holding Since
Sep 2020
7 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in IRON Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Jun 30, 2026RA CAPITAL MANAGEMENT, L.P. holds $11,082,969,028 across 75 Biotechnology names. IRON ranks #14 (1.6% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | ASND |
Ascendis Pharma A/S
|
10,281,496 | $2,742,280,613 | |
| 2 | PBLS |
Parabilis Medicines, Inc.
|
28,933,371 | $791,906,364 | |
| 3 | RYTM |
Rhythm Pharmaceuticals, Inc.
|
6,666,837 | $740,218,912 | |
| 4 | PCVX |
Vaxcyte, Inc.
|
11,474,599 | $667,018,439 | |
| 5 | SION |
Sionna Therapeutics, Inc.
|
9,905,045 | $435,722,929 | |
| 6 | TYRA |
Tyra Biosciences, Inc.
|
12,198,625 | $389,624,082 | |
| 7 | EWTX |
Edgewise Therapeutics, Inc.
|
8,392,730 | $340,996,619 | |
| 8 | NAMS |
NewAmsterdam Pharma Co N.V.
|
9,883,524 | $330,779,298 |
All Filings in IRON
Export CSV
8 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $179,209,163 | 2,450,221 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $156,667,130 | 2,450,221 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $156,924,642 | 1,976,132 | Shares | Sole | 2026-02-17 | |
| 2025-12-30 | $171,381,966 | 2,228,924 | Shares | Sole | 2026-01-07 | |
| 2025-09-30 | $104,215,164 | 1,577,106 | Shares | Sole | 2025-11-14 | |
| 2025-06-30 | $83,523,533 | 1,577,106 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $78,287,541 | 1,577,106 | Shares | Sole | 2025-05-15 | |
| 2020-09-30 FSDC | — | 1,000,000 | Shares | Sole | 2020-11-16 | |
| No filing history on record for this holder in this stock. | ||||||