Ownership history in PROFESSIONAL ADVISORY SERVICES INC Β· 67 quarters on record
This page tracks every 13F SEC filing in which PROFESSIONAL ADVISORY SERVICES INC reported a position in D MICROSOFT COM (MSFT). 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 PROFESSIONAL ADVISORY SERVICES INC outperformed the S&P 500 by +7.2% annually on this MSFT position. Timing score: 60% (27/45 decisions correct). Average cost basis: $58.29. Maximum drawdown during holding period: β62.8%.
π₯ Exceptional β beat the S&P 500 by 7.2% per year on this position.
66 quarters analyzed
β
Decent timing β more right than wrong on entries and exits.
27 of 45 add/trim decisions correct
Best entry: $13.22 (2000 Q4) Β· Worst: $482.52 (2025 Q4)
πͺ Held through 2 major drawdowns (>20%).
27 adds Β· 19 trims. Bought during 13 of 19 down-price quarters. π More buys than sells across the holding period.
βοΈ Portfolio weight has remained relatively stable β conviction maintained.
Currently 5.0% 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