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Institutional Ownership

Quantumsphere Acquisition Co

CUSIP G7387B106ORD SHSQ1 2026

13D / 13G Filings
5
Schedule 13D/13G on record
Beneficial Filers
5
Distinct reporting persons
Largest Stake
27.4%
Max % of class reported
Institutional Holders
29
13F filers (latest quarter)

Beneficial Owners — Schedule 13D / 13G

5 filings · latest Feb 17, 2026

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#FiledReporting PersonForm% of ClassSharesFiling
1Feb 17, 2026Highbridge Capital Management, LLC13G/A49SEC
2Feb 12, 2026Mizuho Financial Group, Inc.13G6.3%718.1KSEC
3Nov 14, 2025Highbridge Capital Management LLC13G5.3%600.0KSEC
4Nov 7, 2025Wolverine Asset Management LLC13G5.0%574.2KSEC
5Sep 15, 2025Whiteowl Holdings LLC13D27.4%SEC

Top Institutional Holders (13F)

Largest reported positions · latest quarter

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