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RBF Capital, LLC

Position in PRTA — Prothena Corp Public Ltd Co

CIK 1134621 RENO, NV

Position in PRTA

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$285,868
+$2,044 QoQ
Shares Held
29,200
0.0% QoQ
Ownership
0.057%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#81
of 187 holders
Holding Since
Mar 2020
26 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, 2026

RBF Capital, LLC holds $5,245,524 across 20 Biotechnology names. PRTA ranks #9 (5.4% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in PRTA

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26 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $285,868 29,200
2026-03-31 $283,824 29,200
2025-12-31 $278,860 29,200
2025-09-30 $284,992 29,200
2025-06-30 $177,244 29,200
2025-03-31 $361,350 29,200
2024-12-31 $404,420 29,200
2024-09-30 $758,906 45,362
2024-06-30 $936,271 45,362
2024-03-31 $1,123,616 45,362
2023-12-31 $1,648,455 45,362
2023-09-30 $2,622,966 54,362
2023-06-30 $3,711,837 54,362
2023-03-31 $2,634,926 54,362
2022-12-31 $3,275,310 54,362
2022-09-30 $3,295,968 54,362
2022-06-30 $1,231,578 45,362
2022-03-31 $1,658,888 45,362
2021-12-31 $2,240,882 45,362
2021-09-30 $3,231,135 45,362
2021-06-30 $2,332,060 45,362
2021-03-31 $1,139,493 45,362
2020-12-31 $544,797 45,362
2020-09-30 $453,166 45,362
2020-06-30 $474,486 45,362
2020-03-31 $485,373 45,362