Ownership history in Gruss & Co., LLC Β· 57 quarters on record
This page tracks every 13F SEC filing in which Gruss & Co., LLC reported a position in AMAZON COM INC COM (AMZN). 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 Gruss & Co., LLC outperformed the S&P 500 by +12.0% annually on this AMZN position. Timing score: 35% (14/40 decisions correct). Average cost basis: $15.29. Maximum drawdown during holding period: β40.0%.
π₯ Exceptional β beat the S&P 500 by 12.0% per year on this position.
11 quarters analyzed
β οΈ Poor timing β buys often preceded drops, trims preceded rallies.
14 of 40 add/trim decisions correct
Best entry: $1.65 (2005 Q2) Β· Worst: $230.82 (2025 Q4)
πͺ Held through 3 major drawdowns (>20%). Diamond-hands conviction.
21 adds Β· 20 trims. Bought during 9 of 19 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 6.6% 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