Guy Spier’s Berkshire Hathaway Class A BRK.A Stock Holding History

Guy Spier’s Portfolio BRK.A Stock Details BRK.A Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$22.5M	Hold	30	–	–	15.59%	2
2026 Q1	$21.5M	Hold	30	–	–	15.92%	2
2025 Q4	$22.6M	Hold	30	–	–	15.35%	4
2025 Q3	$22.6M	Hold	30	–	–	7.13%	6
2025 Q2	$21.9M	Hold	30	–	–	7.06%	7
2025 Q1	$24M	Hold	30	–	–	8.16%	5
2024 Q4	$20.4M	Hold	30	–	–	7.1%	6
2024 Q3	$20.7M	Hold	30	–	–	7.26%	7
2024 Q2	$18.4M	Hold	30	–	–	7%	7
2024 Q1	$19M	Hold	30	–	–	7.27%	7
2023 Q4	$16.3M	Hold	30	–	–	7.12%	7
2023 Q3	$15.9M	Hold	30	–	–	7.86%	6
2023 Q2	$15.5M	Hold	30	–	–	7.41%	6
2023 Q1	$14M	Hold	30	–	–	7.22%	6
2022 Q4	$14.1M	Hold	30	–	–	7.57%	6
2022 Q3	$12.2M	Buy	+30	New	+$12.8M	7.42%	6

Other funds holding BRK.A

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

First Manhattan New York $39.2B AUM 21.04% 1-Year Est. Return

Norges Bank Oslo, Norway $1T AUM

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

HighTower Advisors Chicago, Illinois $103B AUM 28.65% 1-Year Est. Return

GRQ

Gardner Russo & Quinn Lancaster, Pennsylvania $8.93B AUM 6.76% 1-Year Est. Return

EHC

Everett Harris & Co Los Angeles, California $8.14B AUM 14.79% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

HTI

Hikari Tsushin Inc Tokyo, Japan $1.51B AUM 13.71% 1-Year Est. Return

Markel Group Glen Allen, Virginia $13.1B AUM 15.62% 1-Year Est. Return

Guy Spier's BRK.A Position: Q2 2026 in Review

Guy Spier held its Berkshire Hathaway Class A (BRK.A) position steady in Q2 2026 at 30 shares worth $22.5M. The position accounts for 15.59% of the portfolio, ranked #2.

Guy Spier first reported a position in BRK.A in Q3 2022 and has held it in 16 quarters since. The position peaked at $24M in Q1 2025. 1,415 funds tracked by Wall St. Rank hold BRK.A as of Q2 2026.

Guy Spier held 30 shares of Berkshire Hathaway Class A worth $22.5M as of Q2 2026.
Guy Spier left its Berkshire Hathaway Class A share count unchanged in Q2 2026.
Berkshire Hathaway Class A made up 15.59% of Guy Spier's portfolio in Q2 2026, its #2 holding.
Guy Spier first reported a position in Berkshire Hathaway Class A in Q3 2022 and has held it in 16 quarters since.
Guy Spier's Berkshire Hathaway Class A position peaked at $24M in Q1 2025.
1,415 funds tracked by Wall St. Rank held Berkshire Hathaway Class A as of Q2 2026.

Based on Aquamarine Zurich's 13F filing for Q2 2026, filed 10 Jul 2026.