Ownership history in Birchview Capital, LP · 20 quarters on record
This page tracks every 13F SEC filing in which Birchview Capital, LP reported a position in PROTHENA CORP PLC (PRTA). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price — sourced directly from SEC EDGAR 13F filings.
| Quarter | Action | Shares | Change | Chg % | % of Fund | Mkt Value | Price (EOQ) |
|---|---|---|---|---|---|---|---|
| 2025 Q4 | REDUCED | 441,019 | -108,000 | -19.7% | 2.47% | $4.2M | $9.55 |
| 2025 Q3 | ADDED | 549,019 | +98,000 | +21.7% | 4.05% | $5.4M | $9.76 |
| 2025 Q2 | ADDED | 451,019 | +118,045 | +35.5% | 2.72% | $2.7M | $6.07 |
| 2025 Q1 | ADDED | 332,974 | +28,400 | +9.3% | 3.58% | $4.1M | $12.38 |
| 2024 Q4 | ADDED | 304,574 | +95,000 | +45.3% | 3.44% | $4.2M | $13.85 |
| 2024 Q3 | ADDED | 209,574 | +6,000 | +2.9% | 3.04% | $3.5M | $16.73 |
| 2024 Q2 | ADDED | 203,574 | +34,000 | +20.1% | 3.89% | $4.2M | $20.64 |
| 2024 Q1 | UNCHANGED | 169,574 | — | 0% | 3.43% | $4.2M | $24.77 |
| 2023 Q4 | UNCHANGED | 169,574 | — | 0% | 4.83% | $6.2M | $36.34 |
| 2023 Q3 | ADDED | 169,574 | +13,463 | +8.6% | 6.96% | $8.2M | $48.25 |
As of 2025 Q4 — sorted by position size