Security key
74764Y205
Quantum Biopharma Ltd. - Class B Subordinate Voting Shares, no par value (QNTM)
CUSIP: 74764Y205
Q1 2026 13F Holders as of 31 Mar 2026
- Security type / class
- Equity / Class B Subordinate Voting Shares, no par value
- Total 13F shares
- 254,282
- Total 13F value
- $1,227,264
- Share change
- +127,069
- SEC-reported price per share
- $4.83
- Number of holders
- 24
- Value change
- +$581,137
- Number of buys
- 14
- Number of sells
- 5
- Shares outstanding
- 3,819,212
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q1 2026
Institutions
24
Top holders
10
QNTM full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q2 2026
Previous quarter: Q4 2025
Quantum Biopharma Ltd. SEC filings
Quantum Biopharma Ltd. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 74764Y205
Recent filing periods:
Ownership snapshot
Top reported holders of QNTM - Quantum Biopharma Ltd. - Class B Subordinate Voting Shares, no par value (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Malone Wealth Ventures LLC
Disclosed value leader
Malone Wealth Ventures LLC
Comparable rows
15/15
Latest evidence
03 Feb 2026
13D/G
13F
Lead comparable stake: 9.8%
13D/G row: Malone Wealth Ventures LLC
Showing 1-6 of 15 holder rows.
Quick read
Malone Wealth Ventures LLC leads the comparable SEC ownership view at 9.8%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Malone Wealth Ventures LLC's linked filing trail.
Comparable ownership
Top 5
Malone Wealth Ventures LLC
9.8%
AdvisorShares Investments LLC
1.3%
CITADEL ADVISORS LLC
0.42%
Marex Group Ltd
0.35%
GTS SECURITIES LLC
0.32%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Malone Wealth Ventures LLC |
13D/G
|
9.8%
|
$2,754,262
375,752 shares
|
-$3,327,659 | 03 Feb 2026 |
| AdvisorShares Investments LLC |
13F
Company
|
1.3%
|
$362,321
49,633 shares
|
— | 31 Dec 2025 |
| CITADEL ADVISORS LLC |
13F
Company
|
0.42%
|
$115,800
15,863 shares
|
— | 31 Dec 2025 |
| Marex Group Ltd |
13F
Company
|
0.35%
|
$98,083
13,436 shares
|
— | 31 Dec 2025 |
| GTS SECURITIES LLC |
13F
Company
|
0.32%
|
$89,790
12,300 shares
|
— | 31 Dec 2025 |
| JANE STREET GROUP, LLC |
13F
Company
|
0.29%
|
$79,512
10,892 shares
|
— | 31 Dec 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q1 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
24
Shares
254,282
Rows available
24
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q1 2026 vs Q4 2025 Across Filers
Q4 2025 holders
23
Q1 2026 holders
24
Holder diff
1
| Investor | Q4 2025 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q4 2025 value | Q1 2026 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend