WILLIAM JOHN SEMPOLINSKI
WILLIAM JOHN SEMPOLINSKI is an Investment Adviser institutional filer with the SEC under CIK 2149024, reporting 104 portfolio positions, with 22 historical 13F filings on file. Most recent reporting period: 2026-09-30.
A Form 13F reports a manager's US-listed stock and option positions only. It does not include real estate, private funds, bonds, cash or non-US holdings, so a 13F portfolio value is not the firm's total assets under management (AUM).
- State of incorporation: MA
- Filing type: 13F-HR
- Latest reporting period: 2026-09-30
- Last filed: 2026-10-20
Top 10 portfolio positions
The largest reported holdings in WILLIAM JOHN SEMPOLINSKI's most recent 13F filing, ranked by reported market value.
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