Guy Spier runs Aquamarine Zurich, a hedge fund overseeing $135K in disclosed equity holdings (SEC CIK 0001953324). The latest portfolio (2026Q1) discloses 7 positions across 2 sectors, with the largest positions in BRK.B, BRK.A and MA. On a mark-to-market basis the tracked portfolio has returned 53.6% since 2024Q2. OpenStocks tracks 8 consecutive quarterly snapshots for this manager — every position change, new entry, and exit is logged below.
Not enough filing history to compute mark-to-market returns for Guy Spier.
We need at least one year of portfolio coverage with priceable positions.
We mark Guy Spier (Aquamarine Zurich)'s disclosed portfolio to current market prices and compare its growth against the S&P 500 (SPY). Guy’s portfolio is 53.6% since 2024Q2.