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Altar Rock LLC’s Berkshire Hathaway Class B BRK.B Stock Holding History

Altar Rock LLC’s Portfolio BRK.B Stock Details BRK.B Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$389K Sell
778
-370
-32% -$178K 0.57% 30
2026
Q1 		$550K Buy
1,148
+1
+0.1% +$491 0.65% 26
2025
Q4 		$577K Buy
+1,147
New +$571K 0.69% 23

Other funds holding BRK.B

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Northern Trust
Northern Trust Chicago, Illinois $860B AUM 41.15% 1-Year Est. Return
Gates Foundation Trust
Gates Foundation Trust Kirkland, Washington $34.4B AUM 26.34% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Charles Schwab
Charles Schwab San Francisco, California $751B AUM 38.74% 1-Year Est. Return

Altar Rock LLC's BRK.B Position: Q2 2026 in Review

Altar Rock LLC reduced its Berkshire Hathaway Class B (BRK.B) stake by 32% in Q2 2026, selling an estimated $178K and leaving 778 shares worth $389K. The position accounts for 0.57% of the portfolio, ranked #30.

Altar Rock LLC first reported a position in BRK.B in Q4 2025 and has held it in 3 quarters since. The position peaked at $577K in Q4 2025. 4,934 funds tracked by Wall St. Rank hold BRK.B as of Q2 2026.

  • Altar Rock LLC held 778 shares of Berkshire Hathaway Class B worth $389K as of Q2 2026.
  • Altar Rock LLC sold 370 Berkshire Hathaway Class B shares in Q2 2026, an estimated $178K.
  • Berkshire Hathaway Class B made up 0.57% of Altar Rock LLC's portfolio in Q2 2026, its #30 holding.
  • Altar Rock LLC first reported a position in Berkshire Hathaway Class B in Q4 2025 and has held it in 3 quarters since.
  • Altar Rock LLC's Berkshire Hathaway Class B position peaked at $577K in Q4 2025.
  • 4,934 funds tracked by Wall St. Rank held Berkshire Hathaway Class B as of Q2 2026.

Based on Altar Rock LLC's 13F filing for Q2 2026, filed 21 Sep 2026.