William John Sempolinski
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William John Sempolinski’s SEALSQ Corp LAES Stock Holding History

William John Sempolinski’s Portfolio LAES Stock Details LAES Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q3 		$42.1K Sell
18,000
-21,700
-55% -$54.8K 0.02% 104
2026
Q2 		$125K Buy
+39,700
New +$118K 0.05% 106

Other funds holding LAES

Bank of New York Mellon
Bank of New York Mellon New York $608B AUM 32.77% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $765B AUM 28.39% 1-Year Est. Return
Kessler Investment Group
Kessler Investment Group Columbus, Indiana $207M AUM 43.85% 1-Year Est. Return
Jane Street
Jane Street New York $1.19T AUM 51.51% 1-Year Est. Return
HRT Financial
HRT Financial New York $57.2B AUM 52.85% 1-Year Est. Return
SBI Securities
SBI Securities Tokyo, Japan $4.38B AUM 56.37% 1-Year Est. Return
WIM
WIM Investment Management Hong Kong $284M AUM 6.32% 1-Year Est. Return
Zurich Cantonal Bank
Zurich Cantonal Bank Zurich, Switzerland $53.5B AUM 32.01% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.84T AUM 33.86% 1-Year Est. Return
LPL Financial
LPL Financial San Diego, California $468B AUM 17.69% 1-Year Est. Return

William John Sempolinski's LAES Position: Q3 2026 in Review

William John Sempolinski reduced its SEALSQ Corp (LAES) stake by 55% in Q3 2026, selling an estimated $54.8K and leaving 18,000 shares worth $42.1K. The position accounts for 0.02% of the portfolio, ranked #104.

William John Sempolinski first reported a position in LAES in Q2 2026 and has held it in 2 quarters since. The position peaked at $125K in Q2 2026. 75 funds tracked by Wall St. Rank hold LAES as of Q3 2026.

  • William John Sempolinski held 18,000 shares of SEALSQ Corp worth $42.1K as of Q3 2026.
  • William John Sempolinski sold 21,700 SEALSQ Corp shares in Q3 2026, an estimated $54.8K.
  • SEALSQ Corp made up 0.02% of William John Sempolinski's portfolio in Q3 2026, its #104 holding.
  • William John Sempolinski first reported a position in SEALSQ Corp in Q2 2026 and has held it in 2 quarters since.
  • William John Sempolinski's SEALSQ Corp position peaked at $125K in Q2 2026.
  • 75 funds tracked by Wall St. Rank held SEALSQ Corp as of Q3 2026.

Based on William John Sempolinski's 13F filing for Q3 2026, filed 20 Oct 2026.