Security key
74764Y205
Quantum Biopharma Ltd. - Class B Subordinate Voting Shares, no par value (QNTM)
CUSIP: 74764Y205
Q3 2025 13F Holders as of 30 Sep 2025
- Security type / class
- Equity / Class B Subordinate Voting Shares, no par value
- Total 13F shares
- 54,356
- Total 13F value
- $892,109
- Share change
- -61,459
- SEC-reported price per share
- $16.40
- Number of holders
- 16
- Value change
- -$1,115,491
- Number of buys
- 8
- Number of sells
- 6
- Shares outstanding
- 3,819,212
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q3 2025
Institutions
16
Top holders
10
QNTM full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q4 2025
Previous quarter: Q2 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
UBS Group AG
Disclosed value leader
UBS Group AG
Comparable rows
15/15
Latest evidence
30 Jun 2025
13F
Lead comparable stake: 1.2%
Showing 1-6 of 15 holder rows.
Quick read
UBS Group AG leads the comparable SEC ownership view at 1.2%.
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 UBS Group AG's linked filing trail.
Comparable ownership
Top 5
UBS Group AG
1.2%
AdvisorShares Investments LLC
0.97%
Virtu Financial LLC
0.44%
LPL Financial LLC
0.29%
Steward Partners Investment Advis...
0.08%
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 |
|---|---|---|---|---|---|
| UBS Group AG |
13F
Company
|
1.2%
|
$929,131
45,883 shares
|
— | 30 Jun 2025 |
| AdvisorShares Investments LLC |
13F
Company
|
0.97%
|
$749,048
36,990 shares
|
— | 30 Jun 2025 |
| Virtu Financial LLC |
13F
Company
|
0.44%
|
$338,000
16,706 shares
|
— | 30 Jun 2025 |
| LPL Financial LLC |
13F
Company
|
0.29%
|
$221,069
10,917 shares
|
— | 30 Jun 2025 |
| Steward Partners Investment Advisory, LLC |
13F
Company
|
0.08%
|
$79,763
3,100 shares
|
— | 30 Jun 2025 |
| JPMORGAN CHASE & CO |
13F
Company
|
0.02%
|
$18,164
897 shares
|
— | 30 Jun 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 Q3 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
16
Shares
54,356
Rows available
16
| 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 Q3 2025 vs Q2 2025 Across Filers
Q2 2025 holders
17
Q3 2025 holders
16
Holder diff
-1
| Investor | Q2 2025 Shares | Q3 2025 Shares | Share Diff | Share Chg % | Q2 2025 value | Q3 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend