Quantum Biopharma Ltd. (QNTM) Institutional Ownership

Institutions by Trading Activity

3,801,151Shares Outstanding

128,381Shares held by institutions

$490,415Value of institutional holdings

3.38%Institutional ownership %

87.14%Shares Changed QoQ

23No. of institutional investors

Quantum Biopharma Ltd. (NASDAQ:QNTM) appears in 23 institutional 13F filings for the quarter ending December 2025.

They owned 3.4% of outstanding stock in December 2025, up from 1.8% the prior quarter.
They increased total shares held in Quantum Biopharma by 87.14% from last quarter, and the number of investors in QNTM increased 130.0% annually.
Of these 23 funds, 12 grew their exposure to Quantum Biopharma, 6 cut back, and 5 maintained positions.
The aggregate institutional position in Quantum Biopharma amounted to 128.38K shares as of December 2025, up by 59.78K shares quarter on quarter, and up 58.46K shares year over year.
As of December 31, 2025, AdvisorShares Investments LLC held the largest stake in Quantum Biopharma with 108.59K shares, accounting for 2.86% of total shares outstanding.
Leading buyers of Quantum Biopharma shares for the quarter ending December 2025 were AdvisorShares Investments LLC (58.96K), Platform Technology Partners (41.12K), JANE STREET GROUP, LLC (20.61K), Mariner, LLC (10.06K), UBS Group AG (5.53K).
Leading sellers of Quantum Biopharma shares for the quarter ending December 2025 were Royal Bank Of Canada (36), Rockefeller Capital Management L.P. (30).
According to Business Quant data, leading holders of QNTM for December 2025 are AdvisorShares Investments LLC (108.59K), Platform Technology Partners (41.12K), JANE STREET GROUP, LLC (31.5K), CITADEL ADVISORS LLC (15.86K), Marex Group plc (13.47K), Virtu Financial LLC (12.28K), Mariner, LLC (10.06K), UBS Group AG (7.24K), OSAIC HOLDINGS, INC. (6.38K), Steward Partners Investment Advisory, LLC (4.38K).

128,381 Total Shares Held

Rows:

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
AdvisorShares Investments LLC	31 Mar, 2026	108,591	58,958	118.79%	$524,495.00
AdvisorShares Investments LLC	31 Mar, 2026	49,633	12,396	33.29%	$362,321.00
Platform Technology Partners	31 Mar, 2026	41,116	41,116	0.00%	$198,590.00
JANE STREET GROUP, LLC	31 Mar, 2026	31,501	20,609	189.21%	$152,149.00
CITADEL ADVISORS LLC	31 Mar, 2026	15,863	0	0.00%	$76,618.00
CITADEL ADVISORS LLC	31 Mar, 2026	15,863	15,863	0.00%	$115,800.00
Marex Group plc	31 Mar, 2026	13,468	32	0.24%	$65,050.00
Marex Group plc	31 Mar, 2026	13,436	0	0.00%	$98,083.00
GTS SECURITIES LLC	31 Mar, 2026	12,300	12,300	0.00%	$89,790.00
Virtu Financial LLC	31 Mar, 2026	12,282	1,876	18.03%	$59.00
JANE STREET GROUP, LLC	31 Mar, 2026	10,892	10,892	0.00%	$79,512.00
Virtu Financial LLC	31 Mar, 2026	10,406	10,406	0.00%	$76.00
Mariner, LLC	31 Mar, 2026	10,059	10,059	0.00%	$48,553.00
UBS Group AG	31 Mar, 2026	7,237	5,527	323.22%	$34,955.00
OSAIC HOLDINGS, INC.	31 Mar, 2026	6,375	1,105	20.97%	$30,790.00
OSAIC HOLDINGS, INC.	31 Mar, 2026	5,270	4,590	675.00%	$38,470.00
Steward Partners Investment Advisory, LLC	31 Mar, 2026	4,381	0	0.00%	$21,160.00
Steward Partners Investment Advisory, LLC	31 Mar, 2026	4,381	1,281	41.32%	$31,981.00
UBS Group AG	31 Mar, 2026	1,710	-7,044	-80.47%	$12,483.00
TUCKER ASSET MANAGEMENT LLC	31 Mar, 2026	1,114	1,114	0.00%	$8,132.00

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