Ownership history in DCF Advisers, LLC Β· 23 quarters on record
This page tracks every 13F SEC filing in which DCF Advisers, 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 β sourced directly from SEC EDGAR 13F filings.
π DCF Advisers, LLC underperformed the S&P 500 by β0.6% annually on this PRTA position. Timing score: 50% (10/20 decisions correct). Average cost basis: $27.31. Maximum drawdown during holding period: β91.5%.
β‘οΈ Roughly in line with S&P 500 (Β±1% alpha range).
22 quarters analyzed
β‘οΈ Neutral timing β roughly coin-flip accuracy on add/trim calls.
10 of 20 add/trim decisions correct
Best entry: $9.76 (2025 Q3) Β· Worst: $68.28 (2023 Q2)
πͺ Held through 2 major drawdowns (>20%).
13 adds Β· 8 trims. Bought during 8 of 14 down-price quarters. π More buys than sells across the holding period.
π Portfolio weight has been declining in recent quarters. Possible distribution phase.
Currently 0.5% of portfolio
β Based on quarterly 13F SEC filings and end-of-quarter closing prices. Timing score = accuracy of add/trim decisions vs next-quarter price direction. Alpha = mean quarterly excess return Γ 4 (annualised). Not investment advice.
As of 2025 Q4 β sorted by position size