$QNTM

$2.37 +$0.05 (2.16%) Close

$QNTM Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 8.2M shares outstanding

Who owns QNTM?

By type of holder

Institutions 5.0% Everyone else 95.0%

No insider has reported a holding in the last two years, so insiders are counted in "Everyone else".

Concentration Top 10 holders own 5.0%

AdvisorShares Investments LLC 2.5% · Jane Street Group, LLC 0.6%

Institutional ownership

5.0%

+2.0 pts vs last qtr

Institutional holders

+1 vs last qtr

Net shares bought

+160.6K

by institutions in Q2 2026

New / sold out

4 / 3

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

AdvisorShares Investments LLC +95.0K
UBS Group AG +26.2K

Biggest sellers in Q2 2026

Virtu Financial LLC SOLD OUT −12.3K
Osaic Holdings, Inc. −80

Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for Quantum Biopharma Ltd in the last 12 months.

Is your stake being diluted?

There are not yet two fiscal years of reported share counts for Quantum Biopharma Ltd.

How patient are the owners?

Institutional shares by how long they've been held

5+ years0% 3–5 years0% 1–3 years66% Under 1 year34%

Quarterly turnover

36.5%

of institutional shares changed hands

Top 10 managers, median time held

3 quarters

Super Investors

Investment managers reporting QNTM on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
AI AdvisorShares Investments LLC	203.6K	2.47%	+95.0K (+87.5%)	2024	0.1%
Shares held by quarter Peak holding203.6K (Q2'26) Change over 8 quarters+177.3K Share of the company2.470% AdvisorShares Investments LLC's full portfolio →
JS Jane Street Group, LLC	48.4K	0.59%	+16.9K (+53.5%)	Q4 '25	0.0%
Shares held by quarter Peak holding48.4K (Q2'26) Change over 8 quarters+48.4K Share of the company0.590% Jane Street Group, LLC's full portfolio →

AdvisorShares Investments LLC

203.6K

% of company

2.47%

Change vs last qtr

+95.0K (+87.5%)

Held since

2024

Jane Street Group, LLC

48.4K

% of company

0.59%

Change vs last qtr

+16.9K (+53.5%)

Held since

Q4 '25

26 more super investors behind a free account

See every manager holding Quantum Biopharma Ltd, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting QNTM on Form N-PORT; together they hold 2.5% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
AP AdvisorShares Psychedelics ETF AdvisorShares Trust	$737K	203.6K	2.47%	1.66%	June 30, 2026
BA Blackstone Alternative Multi-Strategy Fund Blackstone Alternative Investment Funds	$-2.53K	—	-0.01%	0.00%	June 30, 2026

AdvisorShares Psychedelics ETF

AdvisorShares Trust

Position value

$737K

% of company

2.47%

% of the fund

1.66%

As of

June 30, 2026

Blackstone Alternative Multi-Strategy Fund

Blackstone Alternative Investment Funds

Position value

$-2.53K

% of company

-0.01%

% of the fund

0.00%

As of

June 30, 2026

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