13F Insight
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DOSSIER · 13F-HR · Q3 2026

WILLIAM JOHN SEMPOLINSKI

$259M in tracked AUM across 104 positions as of Q3 2026.

WJ
CIK 0002149024 · last filed Sep 30, 2026
Total AUM
$259M
as of Q3 2026
Holdings
104
—
positions
Whale Score
53
53
tracked
Activity
—
no data
changes this Q

Top 10 holdings

By portfolio weight as of Q3 2026.

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