Ownership history in Winch Advisory Services, LLC Β· 12 quarters on record
This page tracks every 13F SEC filing in which Winch Advisory Services, LLC reported a position in BIOGEN INC COM (BIIB). 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 Winch Advisory Services, LLC underperformed the S&P 500 by β48.4% annually on this BIIB position. Average cost basis: $313.03. Maximum drawdown during holding period: β59.9%.
β Significantly underperformed the S&P 500 by 48.4% ann.
9 quarters analyzed
Best entry: $313.03 (2016 Q3) Β· Worst: $313.03 (2016 Q3)
πͺ Held through 1 major drawdown (>20%). Strong conviction under pressure.
1 add Β· 1 trim. Bought during 0 of 7 down-price quarters. π More buys than sells across the holding period.
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