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Livermore
Livermore
ZHEN

Birchview Capital, LP

SEC CIK
0001618205
Latest filing
Aug 14, 2026

PRTA holding history

Prothena Corp Public Ltd Co in every 13F filed by Birchview Capital, LP, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

PRTA overviewAll 13F holders of PRTAFull Q2 2026 holdings

Shares (Q2 2026)
449,019
Value
$4.40M
% of portfolio
2.1%
Quarters held
21
Since Q2 2021
Holdings of PRTA by Birchview Capital, LP, by quarter
QuarterSharesValue% of portfolioShare changeActionAll holders
Q2 2026449,019$4.40M2.1%00.0%UnchangedHolders
Q1 2026449,019$4.36M2.5%+8,000+1.8%AddedHolders
Q4 2025441,019$4.21M2.5%−108,000−19.7%ReducedHolders
Q3 2025549,019$5.36M4.0%+98,000+21.7%AddedHolders
Q2 2025451,019$2.74M2.7%+118,045+35.5%AddedHolders
Q1 2025332,974$4.12M3.6%+28,400+9.3%AddedHolders
Q4 2024304,574$4.22M3.4%+95,000+45.3%AddedHolders
Q3 2024209,574$3.51M3.0%+6,000+2.9%AddedHolders
Q2 2024203,574$4.20M3.9%+34,000+20.1%AddedHolders
Q1 2024169,574$4.20M3.4%00.0%UnchangedHolders
Q4 2023169,574$6.16M4.8%00.0%UnchangedHolders
Q3 2023169,574$8.18M7.0%+13,463+8.6%AddedHolders
Q2 2023156,111$10.7M8.0%+27,716+21.6%AddedHolders
Q1 2023128,395$6.22M4.9%+1,200+0.9%AddedHolders
Q4 2022127,195$7.66M5.4%+8,250+6.9%AddedHolders
Q3 2022118,945$7.21M5.1%+16,397+16.0%AddedHolders
Q2 2022102,548$2.78M2.0%+60,570+144.3%AddedHolders
Q1 202241,978$1.53M1.1%+1,731+4.3%AddedHolders
Q4 202140,247$1.99M1.3%00.0%UnchangedHolders
Q3 202140,247$2.87M2.0%+10,000+33.1%AddedHolders
Q2 202130,247$1.55M0.9%+30,247NewHolders