PRTA — PROTHENA CORP PLC

Ownership history in Rangeley Capital, LLC  ·  3 quarters on record

This page tracks every 13F SEC filing in which Rangeley Capital, LLC 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.

Peak position
5.18% (2025 Q2)
Avg. % of fund
4.69%
First filed
2025 Q2
Last filed
2025 Q4
Quarters held
3
Quarter Action Shares Change Chg % % of Fund Mkt Value Price (EOQ)
2025 Q4 REDUCED 524,600 -35,857 -6.4% 4.16% $5.0M $9.55
2025 Q3 REDUCED 560,457 -154,910 -21.7% 4.73% $5.5M $9.76
2025 Q2 INITIATED 715,367 — — 5.18% $4.3M $6.07
% of Fund (quarterly)    PRTA price (monthly, adj. close)

Other funds also holding PRTA

As of 2025 Q4 — sorted by position size

Birchview Capital, LP 3Y 7Y 2.47% Palo Alto Investors LP 3Y 7Y 1.76% MONIMUS CAPITAL MANAGEMENT, LP 1.6% ADAR1 Capital Management, LLC 1.01% DCF Advisers, LLC 3Y 0.5% Rubric Capital Management LP 3Y 7Y 0.42% Seven Fleet Capital Management LP 0.31% ARMISTICE CAPITAL, LLC 3Y 7Y 0.17% Duncan Williams Asset Management, LLC 0.16% Persistent Asset Partners Ltd 0.12%
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