HolderBook

QUANTUM BIOPHARMA LTD (QNTM)

Institutional ownership reported to the SEC as of Q2 2026, across 8 quarters.

27
Reporting holders
$1.5M
Reported value
0.0%
Held as options
+4
Holder change

Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.

Holders

FilerValueShares Their book Held Change
AdvisorShares Investments LLC$736.9K203,5640.09%8q+87.5%+$343.8K
JANE STREET GROUP, LLC$175.0K48,3550.00%3q+53.5%+$61.0K
Platform Technology Partners$148.8K41,1160.02%2qHELD
UBS Group AG$120.9K33,4050.00%6q+361.6%+$94.7K
Steward Partners Investment Advisory, LLC$100.9K27,8810.00%5q+536.4%+$85.1K
CITADEL ADVISORS LLC$57.4K15,8630.00%3qHELD
Marex Group Ltd$48.6K13,4360.00%4qHELD
Mariner, LLC$36.2K10,0000.00%2q-0.6%
LANARK FINANCIAL, INC.$25.3K7,0000.00%newNEW
OSAIC HOLDINGS, INC.$22.8K6,2950.00%5q-1.3%
Global Retirement Partners, LLC$10.9K3,0000.00%newNEW
JONES FINANCIAL COMPANIES LLLP$4.6K1,2090.00%2q+72.7%+$1.9K
Atlantic Union Bankshares Corp$3.6K1,0000.00%3qHELD
Farther Finance Advisors, LLC$3.6K1,0000.00%3qHELD
MORGAN STANLEY$2.2K6000.00%newNEW
ROYAL BANK OF CANADA$2.0K4460.00%newNEW
WELLS FARGO & COMPANY/MN$9072500.00%2q+25.0%
Cetera Trust Company, N.A$9052500.00%6qHELD
MERCER GLOBAL ADVISORS INC /ADV$6881900.00%newNEW
Federation des caisses Desjardins du Quebec$334930.00%8qHELD
SBI Securities Co., Ltd.$286790.00%7q+5.3%
GROUP ONE TRADING LLC$123340.00%8qHELD
Rockefeller Capital Management L.P.$109300.00%4qHELD
Activest Wealth Management$54150.00%6qHELD
TD Waterhouse Canada Inc.$2060.00%2q-70.0%
CITIGROUP INC$410.00%newNEW
Purpose Unlimited Inc.$410.00%3qHELD

Five percent filings

Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →

FiledFormFiler % of class
2026-07-0813GAdvisorShares Trust5.3%

Quarter by quarter

Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.

QuarterHoldersValue SharesNewAdded TrimmedOptions
Q2 202627$1.5M415,1196730.0%
Q1 202623$1.2M242,1007500.0%
Q4 202522$860.8K117,9216450.0%
Q3 202516$904.2K55,0923620.0%
Q2 202516$2.0M99,8916250.0%
Q1 202513$552.7K69,9057220.0%
Q4 20249$256.4K69,7721230.0%
Q3 20249$106.0K26,4909000.0%