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BERKLEY W R CORP

Position in QUMS — Quantumsphere Acquisition Corp

CIK 11544 Greenwich, CT

Position in QUMS

as of Mar 31, 2026 · filed May 15, 2026
Position Value
$5,146,424
+$2,107,589 QoQ
Shares Held
508,540
+67.5% QoQ
Ownership
4.65%
of shares outstanding
% of Portfolio
0.29%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Dec 2025
2 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in QUMS Over Time

Shares Held

Position Value (USD)

Position in Shell Companies

Financial Services · as of Mar 31, 2026

BERKLEY W R CORP holds $953,402,340 across 185 Shell Companies names. QUMS ranks #54 (0.5% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in QUMS

Export CSV
2 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $5,146,424 508,540
2025-12-31 $3,038,835 303,580