DOSSIER · 13F Holders · Q1 2026
QNTM

QUANTUM BIOPHARMA LTD

28 institutions still hold QUANTUM BIOPHARMA LTD as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 74764Y205·28 13F holders·last filed Mar 31, 2026
Market cap
13F value held
$1M
visible holders
Holders
28
filers reporting
Concentration
42.00%
AdvisorShares Investments LLC #1
top holder share
AI Holders Summary · Q1 2026

28 institutions reported QNTM in Q1 2026. AdvisorShares Investments LLC leads at 42.0% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
AdvisorShares Investments LLC
CIK 0001425930
$524K109K0.10%Q1 2026
02
JANE STREET GROUP, LLC
CIK 0001595888· Market maker
$152K32K0.00%Q1 2026
03
Platform Technology Partners
CIK 0001830817
$149K41K0.02%Q2 2026
04
CITADEL ADVISORS LLC
CIK 0001423053
$116K16K0.00%Q4 2025
05
Marex Group plc
CIK 0001997464
$65K13K0.00%Q1 2026
06
Virtu Financial LLC
CIK 0001533964· Market maker
$59K12K0.00%Q1 2026
07
Mariner, LLC
CIK 0001373442
$49K10K0.00%Q1 2026
08
UBS Group AG
CIK 0001610520
$35K7K0.00%Q1 2026
09
OSAIC HOLDINGS, INC.
CIK 0001677044
$31K6K0.00%Q1 2026
10
NBC SECURITIES, INC.
CIK 0000791540
$25K7K0.00%Q2 2026
11
Steward Partners Investment Advisory, LLC
CIK 0001723397
$21K4K0.00%Q1 2026
12
TUCKER ASSET MANAGEMENT LLC
CIK 0001870012
$8K1K0.00%Q4 2025
13
Atlantic Union Bankshares Corp
CIK 0000883948
$5K1K0.00%Q1 2026
14
Farther Finance Advisors, LLC
CIK 0001992825
$4K1K0.00%Q2 2026
15
JONES FINANCIAL COMPANIES LLLP
CIK 0000815917
$3K7000.00%Q1 2026
16
Cetera Trust Company, N.A
CIK 0002005547
$1K2500.00%Q1 2026
17
WELLS FARGO & COMPANY/MN
CIK 0000072971
$4771000.00%Q1 2026
18
Federation des caisses Desjardins du Quebec
CIK 0002022297
$369930.00%Q1 2026
19
Tower Research Capital LLC (TRC)
CIK 0001533421
$343710.00%Q1 2026
20
SBI Securities Co., Ltd.
CIK 0001851815
$286790.00%Q2 2026
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Insiders at QUANTUM BIOPHARMA LTD
Cohen Donald BGuillama Susan DGuillama Noel J