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Disclosery

QUMS QUANTUMSPHERE ACQUISITION CO

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ORD SHS (common), issuer CIK 2070900

4 managers (4 13F filers) reported a position in QUMS shares at 2025-09-30, 851,333 shares in all. 3 filers opened a position and 0 filers sold out during the quarter.

Managers
4
13F filers
4
New
3
Added
0
Reduced
0
Sold out
0
Shares held by filers
851,333

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

Each filer's latest stake. The shares are the aggregate the reporting persons state, which can include entities that file no 13F.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q3 2025

Filers in the available 13F reports with a share position at 2025-09-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
HIGHBRIDGE CAPITAL MANAGEMENT LLC600,000$5.98M0.3%new13F-HRTimeline
Hudson Bay Capital Management LPin group Hudson Bay Capital Management…235,000$2.34M0.01%new13F-HR/ATimelineGroup
Virtu Financial LLCin group Virtu Financial LLC14,934$149K0.01%new13F-HRTimelineGroup
Clear Street Group Inc.in group Clear Street Group Inc.1,399$13.9K<0.01%13F-HRTimelineGroup

Events

  • WOLVERINE ASSET MANAGEMENT LLC and 3 other reporting persons reported 335,957 QUMS shares, 2.95% of the class, as of 2026-09-30, in a 13G/A filed 2026-10-06. 0001140361-26-038779

    Accepted , ingested