Ownership history in GROUP ONE TRADING LLC Β· 42 quarters on record
This page tracks every 13F SEC filing in which GROUP ONE TRADING LLC reported a position in AMARIN CORP PLC SPONS ADR NEW (AMRN). 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 GROUP ONE TRADING LLC outperformed the S&P 500 by +2.5% annually on this AMRN position. Timing score: 57% (23/40 decisions correct). Average cost basis: $133.74. Maximum drawdown during holding period: β97.9%.
β
Outperformed SPY on this position by 2.5% ann.
40 quarters analyzed
β
Decent timing β more right than wrong on entries and exits.
23 of 40 add/trim decisions correct
Best entry: $16.38 (2025 Q3) Β· Worst: $428.80 (2019 Q4)
πͺ Held through 3 major drawdowns (>20%). Diamond-hands conviction.
19 adds Β· 23 trims. Bought during 9 of 24 down-price quarters. π Predominantly trimming β distribution phase.
βοΈ Portfolio weight has remained relatively stable β conviction maintained.
Currently 0.0% 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