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Westchester Capital Management, LLC

Position in ATII — Archimedes Tech SPAC Partners II Co.

CIK 1512805 VALHALLA, NY

Position in ATII

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$9,443,367
+$45,356 QoQ
Shares Held
907,144
0.0% QoQ
Ownership
3.07%
of shares outstanding
% of Portfolio
0.50%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Jun 2025
4 quarters on record
Voting authority Sole 7% Shared 93% None 0%

Common Shares in ATII Over Time

Shares Held

Position Value (USD)

Position in Shell Companies

Financial Services · as of Mar 31, 2026

Westchester Capital Management, LLC holds $654,845,959 across 108 Shell Companies names. ATII ranks #23 (1.4% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in ATII

Export CSV
4 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $9,443,367 907,144
2025-12-31 $9,398,011 907,144
2025-09-30 $9,188,998 900,000
2025-06-30 $6,649,499 650,000