William John Sempolinski »

Berkshire Hathaway shares owned by William John Sempolinski

Quarter-by-quarter ownership of Berkshire Hathaway (BRK.B) shares owned by William John Sempolinski from 13F filings

Historical chart of William John Sempolinski investment in Berkshire Hathaway

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All positions including Berkshire Hathaway held by William John Sempolinski consolidated in one spreadsheet with up to 7 years of data

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Quarterly reported holdings in Berkshire Hathaway by William John Sempolinski

Quarter filed Position value Share count Share price at filing
2026-03-31 $1.2M 2.5k 479.20
2025-12-31 $417k 830 502.65

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Ishares Tr 0-3 Mth Treasury (SGOV)
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Alphabet Cap Stk Cl A (GOOGL)
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Ishares Tr Us Aer Def Etf (ITA)
Vaneck Etf Trust Mrngstr Wde Moat (MOAT)
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Meta Platforms Cl A (META)
Proshares Tr S&p 500 Dv Arist (NOBL)
First Tr Exchange-traded Nasdq Cln Edge (GRID)
Ishares Tr 20 Yr Tr Bd Etf (TLT)

View all positions for William John Sempolinski

Top funds holding Berkshire Hathaway

BlackRock
Vanguard Capital Management
State Street Corporation
Geode Capital Management
Morgan Stanley
Vanguard Portfolio Management
Northern Trust
Bill & Melinda Gates Foundation Trust
Jpmorgan Chase & Co
Charles Schwab Investment Management
Sixth Street Partners Management Company
Goldman Sachs Group
Bank of New York Mellon
FMR
Vanguard Fiduciary Trust

View all funds holding Berkshire Hathaway