Position in PRTA
as of Jun 30, 2026
· filed Aug 14, 2026
Position Value
$4,395,896
+$31,432 QoQ
Shares Held
449,019
0.0% QoQ
Ownership
0.875%
of shares outstanding
% of Portfolio
2.07%
of 13F equity value
Holder Rank
#24
of 187 holders
Holding Since
Jun 2021
21 quarters on record
Voting authority
Sole 100%
Shared 0%
None 0%
Common Shares in PRTA Over Time
Shares Held
Position Value (USD)
Position in Biotechnology
Healthcare · as of Jun 30, 2026Birchview Capital, LP holds $91,246,272 across 49 Biotechnology names. PRTA ranks #6 (4.8% of the industry book) .
| # | Ticker | Company | Shares | Value (USD) | Open |
|---|---|---|---|---|---|
| 1 | SLDB |
Solid Biosciences Inc.
|
666,196 | $6,655,298 | |
| 2 | NTLA |
Intellia Therapeutics, Inc.
|
385,900 | $6,529,428 | |
| 3 | STOK |
Stoke Therapeutics, Inc.
|
178,110 | $5,827,759 | |
| 4 | NKTR |
Nektar Therapeutics
|
81,000 | $5,654,610 | |
| 5 | CORT |
Corcept Therapeutics Inc
|
57,200 | $4,973,540 | |
| 6 | PRTA |
Prothena Corp Public Ltd Co
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|
449,019 | $4,395,896 | |
| 7 | ACAD |
Acadia Pharmaceuticals Inc
|
171,000 | $4,326,300 | |
| 8 | PTGX |
Protagonist Therapeutics, Inc
|
35,018 | $4,292,506 |
All Filings in PRTA
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21 filing rows on record
| Report Date | Value (USD) | Shares | Type | Discretion | Filed | |
|---|---|---|---|---|---|---|
| 2026-06-30 | $4,395,896 | 449,019 | Shares | Sole | 2026-08-14 | |
| 2026-03-31 | $4,364,464 | 449,019 | Shares | Sole | 2026-05-15 | |
| 2025-12-31 | $4,211,731 | 441,019 | Shares | Sole | 2026-02-13 | |
| 2025-09-30 | $5,358,425 | 549,019 | Shares | Sole | 2025-11-13 | |
| 2025-06-30 | $2,737,685 | 451,019 | Shares | Sole | 2025-08-14 | |
| 2025-03-31 | $4,120,553 | 332,974 | Shares | Sole | 2025-05-15 | |
| 2024-12-31 | $4,218,349 | 304,574 | Shares | Sole | 2025-06-30 | |
| 2024-09-30 | $3,506,173 | 209,574 | Shares | Sole | 2025-06-30 | |
| 2024-06-30 | $4,201,767 | 203,574 | Shares | Sole | 2025-06-30 | |
| 2024-03-31 | $4,200,347 | 169,574 | Shares | Sole | 2025-06-30 | |
| 2023-12-31 | $6,162,319 | 169,574 | Shares | Sole | 2025-06-30 | |
| 2023-09-30 | $8,181,945 | 169,574 | Shares | Sole | 2025-06-30 | |
| 2023-06-30 | $10,659,259 | 156,111 | Shares | Sole | 2023-08-08 | |
| 2023-03-31 | $6,223,305 | 128,395 | Shares | Sole | 2023-05-12 | |
| 2022-12-31 | $7,663,498 | 127,195 | Shares | Sole | 2023-02-03 | |
| 2022-09-30 | $7,211,635 | 118,945 | Shares | Sole | 2022-11-28 | |
| 2022-06-30 | $2,784,178 | 102,548 | Shares | Sole | 2022-08-12 | |
| 2022-03-31 | $1,535,135 | 41,978 | Shares | Sole | 2022-05-13 | |
| 2021-12-31 | $1,988,201 | 40,247 | Shares | Sole | 2022-02-14 | |
| 2021-09-30 | $2,866,793 | 40,247 | Shares | Sole | 2021-11-12 | |
| 2021-06-30 | $1,554,998 | 30,247 | Shares | Sole | 2021-08-10 | |
| No filing history on record for this holder in this stock. | ||||||