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Disclosery

QUMS QUANTUMSPHERE ACQUISITION CO

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ORD SHS (common), issuer CIK 2070900

29 managers (29 13F filers) reported a position in QUMS shares at 2026-03-31, 7,555,578 shares in all. 4 filers opened a position and 1 filer sold out during the quarter.

Managers
29
13F filers
29
New
4
Added
6
Reduced
7
Sold out
1
Shares held by filers
7,555,578

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, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, 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
MIZUHO SECURITIES USA LLCin group MIZUHO FINANCIAL GROUP INC731,984$7.36M0.17%+13,89813F-HRTimelineGroup
WOLVERINE ASSET MANAGEMENT LLCin group WOLVERINE ASSET MANAGEMENT LLC603,984$6.11M0.1%+28,76213F-HRTimelineGroup
BERKLEY W R CORP508,540$5.15M0.28%+204,96013F-HRTimeline
Karpus Management, Inc.493,875$5M0.16%-47513F-HRTimeline
Shaolin Capital Management LLC480,000$4.86M0.2%013F-HRTimeline
RIVERNORTH CAPITAL MANAGEMENT, LLC424,512$4.3M0.22%new13F-HRTimeline
GLAZER CAPITAL, LLCin group GLAZER CAPITAL, LLC423,019$4.28M0.09%-1,13413F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.409,860$4.15M<0.01%013F-HRTimelineGroup
Linden Advisors LPin group Linden Advisors LP400,000$4.05M0.02%013F-HRTimelineGroup
Polar Asset Management Partners Inc.400,000$4.05M0.1%new13F-HRTimeline
AQR Arbitrage LLCin group AQR CAPITAL MANAGEMENT LLC308,294$3.12M0.05%-14,36613F-HRTimelineGroup
HGC Investment Management Inc.300,000$3.04M0.67%013F-HRTimeline
TORONTO DOMINION BANKin group TORONTO DOMINION BANK265,600$2.69M0.01%+89,82213F-HRTimelineGroup
Westchester Capital Management, LLCin group Westchester Capital Managemen…250,000$2.53M0.12%013F-HRTimelineGroup
Hudson Bay Capital Management LPin group Hudson Bay Capital Management…235,000$2.38M0.01%013F-HRTimelineGroup
Clear Street Group Inc.in group Clear Street Group Inc.175,001$1.77M0.01%-249,76113F-HRTimelineGroup
Cable Car Capital, LP174,801$1.77M0.61%013F-HRTimeline
HEIGHTS CAPITAL MANAGEMENT, INCin group HEIGHTS CAPITAL MANAGEMENT, I…150,000$1.52M0.43%013F-HRTimelineGroup
Radcliffe Capital Management, L.P.150,000$1.52M0.11%013F-HRTimeline
HIGHBRIDGE CAPITAL MANAGEMENT LLC121,078$1.23M0.08%new13F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS115,048$1.16M<0.01%+12,70813F-HRTimelineGroup
Crossingbridge Advisors, LLC107,825$1.09M0.2%new13F-HRTimeline
Periscope Capital Inc.100,000$1.01M0.18%-25,00013F-HRTimeline
RLH Capital LLC100,000$1.01M0.51%13F-HRTimeline
Schonfeld Strategic Advisors LLC55,000$557K<0.01%013F-HRTimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP35,291$357K<0.01%-182,18813F-HRTimelineGroup
Virtu Financial LLCin group Virtu Financial LLC22,303$226K0.01%-2,48013F-HRTimelineGroup
Logan Stone Capital, LLC14,500$147K0.04%013F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY63$638<0.01%+3313F-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