Guy Spier's MA Position Overview
Guy Spier (via Aquamarine Zurich Ag) currently holds 40,000 shares of Mastercard Incorporated (MA) worth $22.84 M, representing 15.48% of the portfolio. First purchased in 2014-Q4, this long-term strategic position has been held for 45 quarters.
Based on 13F filings since 2013, Guy Spier has maintained a long-term strategic position in MA, representing a significant commitment to this investment thesis. Largest reduction occurred in Q4 2025, reducing 25,750 shares.
Analysis based on 13F filings available since 2013 Q2
Guy Spier's Mastercard Incorporated (MA) Holding Value Over Time
Track share changes against reported price movement
Quarterly Mastercard Incorporated (MA) Trades by Guy Spier
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q4 2014 | +65,751 | Add 0.00% | 65,750 | $86.16 |
| Q3 2022 | +65,751 | Add 0.00% | 65,750 | $284.33 |
| Q4 2025 | -25,750 | Reduce 39.16% | 40,000 | $570.88 |
Guy Spier's Mastercard Incorporated Investment FAQs
Guy Spier first purchased Mastercard Incorporated (MA) in Q4 2014, acquiring 65,750 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Guy Spier has held Mastercard Incorporated (MA) for 45 quarters since Q4 2014.
Guy Spier's largest addition to Mastercard Incorporated (MA) was in Q4 2014, adding 65,750 shares worth $5.66 M.
According to the latest 13F filing for Q4 2025, Guy Spier's firm, Aquamarine Zurich Ag, owns 40,000 shares of Mastercard Incorporated (MA), valued at approximately $22.84 M.
As of the Q4 2025 filing, Mastercard Incorporated (MA) represents approximately 15.48% of Guy Spier's publicly disclosed stock portfolio, making it one of their key holdings.
Guy Spier's peak holding in Mastercard Incorporated (MA) was 65,750 shares, as reported at the end of Q4 2014.