QNTM · Quantum Biopharma Ltd. · Holdings

$3.39 -0.05 (-1.35%)

Market Cap

$24.75M

6.43M

Volume · Oct 5 124.91K Avg daily vol (3M) 193.12K

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP →

Some SEC filings for this period have not finished importing. Holder totals and changes may be incomplete; these filings remain queued for recovery.

Quarter:

Holders: 26

Total Value: $1,502,031

Total Shares: 414,929

Institutional Ownership Trend

11 quarters

Holder Concentration

Across 26 13F filers · Δ vs Mar 31, 2026

Top Holder

49.1%

+6.4 pts

Top 5

85.4%

+2.6 pts

Top 10

98.1%

−0.6 pts

HHI

2,788

Highly concentrated+426

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: +1

Institutional value: +22.3%

Shares held: +63.2%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Small AdvisorShares Investments LLC	+94,973	203,564
Mega UBS Group AG	+26,168	33,405
Large Steward Partners Investment Advisory, LLC	+23,500	27,881
Mega JANE STREET GROUP, LLC	+16,854	48,355
Mega JONES FINANCIAL COMPANIES LLLP	+509	1,209

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Large OSAIC HOLDINGS, INC.	−80	6,295
Large Mariner, LLC	−59	10,000
Large Marex Group plc	−32	13,436
Large TD Waterhouse Canada Inc.	−14	6

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Mid NBC SECURITIES, INC.	7,000	$25,340
Mid Global Retirement Partners, LLC	3,000	$10,860
Mega MORGAN STANLEY	600	$2,172
Mega CITIGROUP INC	1	$3

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Mid Virtu Financial LLC	12,282	$59,322
Mid Tower Research Capital LLC (TRC)	71	$342
Mega NATIONAL BANK OF CANADA /FI/	20	$96

Filter: New 4 Increased 8 Reduced 4 Sold out 3 Unchanged 10

Showing 26 of 26

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

AdvisorShares Investments LLC

$736,901

49.06%

203,564

JANE STREET GROUP, LLC

$175,044

11.65%

48,355

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	20,529	$74,314	42.5%	Defined
Jane Street Global Trading, LLC	27,826	$100,730	57.5%	Defined

Platform Technology Partners

$148,839

9.91%

41,116

UBS Group AG

$120,925

8.05%

33,405

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS AG	29,716	$107,571	89.0%	Defined
UBS Switzerland AG	1,471	$5,325	4.4%	Defined
UBS Securities LLC	2,218	$8,029	6.6%	Defined

Steward Partners Investment Advisory, LLC

$100,929

6.72%

27,881

CITADEL ADVISORS LLC

$57,424

3.82%

15,863

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	15,863	$57,424	100.0%	Defined

Marex Group plc

$48,638

3.24%

13,436

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Marex Financial	13,436	$48,638	100.0%	Defined

Mariner, LLC

$36,200

2.41%

10,000

NBC SECURITIES, INC.

$25,340

1.69%

7,000

OSAIC HOLDINGS, INC.

$22,787

1.52%

6,295

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
OSAIC WEALTH, INC.	6,295	$22,787	100.0%	Defined

Global Retirement Partners, LLC

$10,860

0.72%

3,000

JONES FINANCIAL COMPANIES LLLP

$4,376

0.29%

1,209

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Edward D. Jones & Co., L.P.	1,209	$4,376	100.0%	Sole

Atlantic Union Bankshares Corp

$3,620

0.24%

1,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
West Financial Services, Inc.	1,000	$3,620	100.0%	Sole

Farther Finance Advisors, LLC

$3,620

0.24%

1,000

MORGAN STANLEY

$2,172

0.14%

600

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY SMITH BARNEY LLC	600	$2,172	100.0%	Defined

ROYAL BANK OF CANADA

$1,614

0.11%

446

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RBC Dominion Securities Inc.	446	$1,614	100.0%	Defined

Cetera Trust Company, N.A

$905

0.06%

250

WELLS FARGO & COMPANY/MN

$905

0.06%

250

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO ADVISORS FINANCIAL NETWORK, LLC	150	$543	60.0%	Defined
WELLS FARGO CLEARING SERVICES, LLC	100	$362	40.0%	Defined

Federation des caisses Desjardins du Quebec

$335

0.02%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Desjardins Securities inc.	29	$104	31.0%	Defined
Held directly	64	$231	69.0%	Defined

SBI Securities Co., Ltd.

$285

0.02%

GROUP ONE TRADING LLC

$123

0.01%

Rockefeller Capital Management L.P.

$108

0.01%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
ROCKEFELLER FINANCIAL LLC	30	$108	100.0%	Defined

Activest Wealth Management

$54

0.00%

TD Waterhouse Canada Inc.

$21

0.00%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
TORONTO DOMINION BANK	6	$21	100.0%	Defined

Purpose Unlimited Inc.

0.00%

CITIGROUP INC

0.00%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citigroup Financial Products Inc. joint	1	$3	100.0%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Virtu Americas LLC	12,282	$59,322	100.0%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Tower Research Capital Investments LLC	71	$342	100.0%	Other

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
National Bank Financial Inc.	20	$96	100.0%	Defined

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