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Friends of the Cornell Lab of Ornithology’s Berkshire Hathaway Class A BRK.A Stock Holding History

Friends of the Cornell Lab of Ornithology’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
– – 18.15% 3
2026
Q1 		$21.5M Hold
30
– – 20.34% 3
2025
Q4 		$22.6M Buy
+30
New +$22.4M 21.72% 3

Other funds holding BRK.A

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
First Manhattan
First Manhattan New York $39.2B AUM 21.04% 1-Year Est. Return
Norges Bank
Norges Bank Oslo, Norway $1T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
HighTower Advisors
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
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
HTI
Hikari Tsushin Inc Tokyo, Japan $1.51B AUM 13.71% 1-Year Est. Return
MG
Markel Group Glen Allen, Virginia $13.1B AUM 15.62% 1-Year Est. Return

Friends of the Cornell Lab of Ornithology's BRK.A Position: Q2 2026 in Review

Friends of the Cornell Lab of Ornithology held its Berkshire Hathaway Class A (BRK.A) position steady in Q2 2026 at 30 shares worth $22.5M. The position accounts for 18.15% of the portfolio, ranked #3.

Friends of the Cornell Lab of Ornithology first reported a position in BRK.A in Q4 2025 and has held it in 3 quarters since. The position peaked at $22.6M in Q4 2025. 1,413 funds tracked by Wall St. Rank hold BRK.A as of Q2 2026.

  • Friends of the Cornell Lab of Ornithology held 30 shares of Berkshire Hathaway Class A worth $22.5M as of Q2 2026.
  • Friends of the Cornell Lab of Ornithology left its Berkshire Hathaway Class A share count unchanged in Q2 2026.
  • Berkshire Hathaway Class A made up 18.15% of Friends of the Cornell Lab of Ornithology's portfolio in Q2 2026, its #3 holding.
  • Friends of the Cornell Lab of Ornithology first reported a position in Berkshire Hathaway Class A in Q4 2025 and has held it in 3 quarters since.
  • Friends of the Cornell Lab of Ornithology's Berkshire Hathaway Class A position peaked at $22.6M in Q4 2025.
  • 1,413 funds tracked by Wall St. Rank held Berkshire Hathaway Class A as of Q2 2026.

Based on Friends of the Cornell Lab of Ornithology's 13F filing for Q2 2026, filed 14 Aug 2026.