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Disclosery

QMCO QUANTUM CORP

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COM (common), issuer CIK 709283

36 managers (36 13F filers) reported a position in QMCO shares at 2025-06-30, 884,340 shares in all. 13 filers opened a position and 7 filers sold out during the quarter.

Managers
36
13F filers
36
New
13
Added
9
Reduced
8
Sold out
7
Shares held by filers
884,340

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

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q2 2025

Filers in the available 13F reports with a share position at 2025-06-30, 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
VANGUARD GROUP INCin group VANGUARD GROUP INC256,678$2.56M<0.01%+2,23213F-HRTimelineGroup
MARSHALL WACE, LLPin group MARSHALL WACE, LLP178,021$1.77M<0.01%new13F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.141,311$1.41M<0.01%+12,07913F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC69,384$692K<0.01%+5,80613F-HRTimelineGroup
UBS Group AGin group UBS Group AG60,221$600K<0.01%+38,23513F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY45,733$456K<0.01%+43,51913F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP27,347$273K<0.01%013F-HRTimelineGroup
Sassicaia Capital Advisers LLC23,267$232K0.15%new13F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA19,353$193K<0.01%new13F-HR/ATimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP11,687$117K<0.01%013F-HRTimelineGroup
Apollon Wealth Management, LLCin group Apollon Wealth Management, LLC10,714$107K<0.01%new13F-HRTimelineGroup
CIBC Private Wealth Group LLCin group CIBC Bancorp USA Inc.10,404$104K<0.01%new13F-HRTimelineGroup
SBI Securities Co., Ltd.5,636$56.2K<0.01%+2,80913F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN5,315$53K<0.01%+4,74013F-HRTimelineGroup
AlphaQuest LLC4,707$46.9K<0.01%-4,94613F-HRTimeline
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC4,615$46K<0.01%new13F-HRTimelineGroup
HOLLENCREST CAPITAL MANAGEMENT2,000$19.9K<0.01%new13F-HRTimeline
CITIGROUP INCin group CITIGROUP INC1,236$12.3K<0.01%new13F-HRTimelineGroup
Covestor Ltd942$9K0.01%new13F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS820$8.18K<0.01%-2,44113F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…722$7.2K<0.01%-1,57213F-HRTimelineGroup
NewEdge Advisors, LLC700$6.98K<0.01%new13F-HRTimeline
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/662$6.6K<0.01%-74,64413F-HRTimelineGroup
Caitong International Asset Management …632$6.3K<0.01%-1,06413F-HRTimeline
FNY Investment Advisers, LLC667$6K<0.01%new13F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC455$4.54K<0.01%-28113F-HR/ATimelineGroup
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP494$4.47K<0.01%+7713F-HRTimelineGroup
FIFTH THIRD BANCORPin group FIFTH THIRD BANK, NATIONAL AS…295$2.94K<0.01%013F-HRTimelineGroup
WHITTIER TRUST CO187$1.86K<0.01%013F-HRTimeline
Fortitude Family Office, LLC46$459<0.01%new13F-HRTimeline
Rialto Wealth Management, LLC42$419<0.01%new13F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.35$348<0.01%+1013F-HR/ATimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO8$80<0.01%-4,50513F-HRTimelineGroup
Farther Finance Advisors, LLC4$40<0.01%013F-HRTimeline
Activest Wealth Management0$2<0.01%-4,28313F-HRTimelineAmount filed as zero, left out of ratios.
CONCOURSE FINANCIAL GROUP SECURITIES, I…0$0013F-HRTimelineValue filed as zero, left out of ratios. Amount filed as zero, left out of ratios.