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QNTM QUANTUM BIOPHARMA LTD

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CL B SUB VTG SHS (common), issuer CIK 1771885

25 managers (25 13F filers) reported a position in QNTM shares at 2026-03-31, 254,301 shares in all. 7 filers opened a position and 6 filers sold out during the quarter.

Managers
25
13F filers
25
New
7
Added
7
Reduced
1
Sold out
6
Shares held by filers
254,301

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.

  • AdvisorShares Trust
    400,378 shares, 4.95% in a 13G/A as of 2026-09-30,0000929638-26-003843
    Accepted , ingested

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
AdvisorShares Investments LLC108,591$524K0.1%+58,95813F-HRTimeline
Platform Technology Partners41,116$199K0.04%new13F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC31,501$152K<0.01%+20,60913F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC15,863$76.6K<0.01%013F-HRTimelineGroup
Marex Group Ltdin group Marex Group Ltd13,468$65K<0.01%+3213F-HRTimelineGroup
Virtu Financial LLCin group Virtu Financial LLC12,282$59K<0.01%+1,87613F-HRTimelineGroup
Mariner, LLCin group Mariner, LLC10,059$48.6K<0.01%new13F-HRTimelineGroup
UBS Group AGin group UBS Group AG7,237$35K<0.01%+5,52713F-HRTimelineGroup
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.6,375$30.8K<0.01%+1,10513F-HRTimelineGroup
Steward Partners Investment Advisory, L…4,381$21.2K<0.01%013F-HRTimeline
Atlantic Union Bankshares Corpin group Atlantic Union Bankshares Corp1,000$4.83K<0.01%013F-HRTimelineGroup
Farther Finance Advisors, LLC1,000$4.41K<0.01%013F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP700$3.34K<0.01%new13F-HRTimelineGroup
Cetera Trust Company, N.A250$1.21K<0.01%013F-HRTimeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN100$477<0.01%new13F-HR/ATimelineGroup
Federation des caisses Desjardins du Qu…93$369<0.01%013F-HRTimeline
SBI Securities Co., Ltd.75$362<0.01%+2013F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…71$343<0.01%new13F-HRTimelineGroup
GROUP ONE TRADING LLC34$164<0.01%013F-HRTimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…30$145<0.01%013F-HRTimelineGroup
NATIONAL BANK OF CANADA /FI/in group NATIONAL BANK OF CANADA /FI/20$93<0.01%new13F-HRTimelineGroup
TD Waterhouse Canada Inc.20$88<0.01%new13F-HRTimeline
Activest Wealth Management15$72<0.01%013F-HRTimeline
Purpose Unlimited Inc.in group Purpose Unlimited Inc.1$4<0.01%013F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA19$00%-3613F-HRTimelineGroupValue filed as zero, left out of ratios.

Events

  • AdvisorShares Trust reported 400,378 QNTM shares, 4.95% of the class, as of 2026-09-30, in a 13G/A filed 2026-10-05. 0000929638-26-003843

    Accepted , ingested