Biggest winner since filing
BRK.BBERKSHIRE HATHAWAY INC DEL
+231.9%
+$95.1M
Biggest loser since filing
CSGPCOSTAR GROUP INC
-63.2%
−$49.1M
Investment strategy
Wally Weitz is a mid-size fund. Disclosed equity book is between $1B and $10B.
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<iframe src="https://openstocks.me/embed/stocks/BRK.B" width="100%" height="480" frameborder="0" loading="lazy" title="BRK.B chart by OpenStocks" style="border:0;border-radius:12px;background:transparent"></iframe>Holdings
9 sectors44 positions
Top 3 = 22% of book · BRK.B, DHR, GOOG
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Performance
vs SPY40 quarters tracked
Mark-to-market portfolio growth vs SPY benchmark, with AUM and concentration history.
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Options & derivatives
No options
Wally Weitz has no PUT or CALL positions disclosed for this quarter.
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Activity & trades
Quarter-by-quarterLast move 2025Q4
ADD G1151C101 — and 4 more recent moves.
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Recent transactions
See full activity →ADD
ACCENTURE PLC IRELAND
+350
~$268.30 · 2025Q4
2026-02-12
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