Quantum Biopharma Ltd. (QNTM) — Institutional Holders, Q2 2026
26 institutional investment managers reported a QNTM position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $1.5M. Every filer is listed below, ranked by position value. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
QNTM in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
Biggest buyers
- AdvisorShares InvestmentsAdded · +94,973 sh+$343.8K
- UBS Group AGAdded · +26,168 sh+$94.7K
- Steward Partners Investment AdvisoryAdded · +23,500 sh+$85.1K
- JANE STREET GROUPAdded · +16,854 sh+$61.0K
- NBC SECURITIESNew · +7,000 sh+$25.3K
Biggest sellers
- Virtu FinancialSold out · -12,282 sh-$44.5K
- OSAICTrimmed · -80 sh-$290.00
- Tower Research Capital (TRC)Sold out · -71 sh-$257.00
- MarinerTrimmed · -59 sh-$214.00
- Marex Group plcTrimmed · -32 sh-$116.00
QNTM 13F holders ranked 1–26 of 26
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | AdvisorShares Investments#1 · 250,181 sh | 250,181 | $736.9K | 0.09% | +61.2% |
| 2 | JANE STREET GROUP#2 · 48,355 sh | 48,355 | $175.0K | 0.00% | +53.5% |
| 3 | Platform Technology Partners#3 · 41,116 sh | 41,116 | $148.8K | 0.02% | 0.0% |
| 4 | UBS Group AG#4 · 33,405 sh | 33,405 | $120.9K | 0.00% | +361.6% |
| 5 | Steward Partners Investment Advisory#5 · 27,881 sh | 27,881 | $100.9K | <0.01% | +536.4% |
| 6 | CITADEL ADVISORS#6 · 15,863 sh | 15,863 | $57.4K | 0.00% | 0.0% |
| 7 | Marex Group plc#7 · 13,436 sh | 13,436 | $48.6K | <0.01% | -0.2% |
| 8 | Mariner#8 · 10,000 sh | 10,000 | $36.2K | 0.00% | -0.6% |
| 9 | NBC SECURITIES#9 · 7,000 sh | 7,000 | $25.3K | — | New |
| 10 | OSAIC#10 · 6,295 sh | 6,295 | $22.8K | 0.00% | -1.3% |
| 11 | Global Retirement Partners#11 · 3,000 sh | 3,000 | $10.9K | <0.01% | — |
| 12 | JONES FINANCIAL COMPANIES LLLP#12 · 1,209 sh | 1,209 | $4.6K | 0.00% | +72.7% |
| 13 | Farther Finance Advisors#13 · 1,000 sh | 1,000 | $3.6K | — | 0.0% |
| 14 | Union Bankshares#14 · 1,000 sh | 1,000 | $3.6K | <0.01% | 0.0% |
| 15 | MORGAN STANLEY#15 · 600 sh | 600 | $2.2K | 0.00% | New |
| 16 | ROYAL BANK OF CANADA#16 · 446 sh | 446 | $2.0K | 0.00% | +2247.4% |
| 17 | WELLS FARGO & COMPANY#17 · 250 sh | 250 | $907.00 | 0.00% | +150.0% |
| 18 | Cetera Company, N.A#18 · 250 sh | 250 | $905.00 | <0.01% | 0.0% |
| 19 | Federation des caisses Desjardins du Quebec#19 · 93 sh | 93 | $334.00 | 0.00% | 0.0% |
| 20 | SBI Securities , Ltd.#20 · 79 sh | 79 | $286.00 | — | +5.3% |
| 21 | GROUP ONE TRADING, L.P.#21 · 34 sh | 34 | $123.00 | 0.00% | 0.0% |
| 22 | Rockefeller Capital Management L.P.#22 · 30 sh | 30 | $109.00 | 0.00% | 0.0% |
| 23 | Activest Wealth Management#23 · 15 sh | 15 | $54.00 | — | 0.0% |
| 24 | TD Waterhouse Canada#24 · 6 sh | 6 | $20.00 | — | -70.0% |
| 25 | Purpose Unlimited#25 · 1 sh | 1 | $4.00 | 0.00% | 0.0% |
| 26 | CITIGROUP#26 · 1 sh | 1 | $4.00 | 0.00% | New |
Funds that sold out of QNTM in Q2 2026 (3)
Held QNTM at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.
| Institution | Shares sold | Value in Q1 2026 |
|---|---|---|
| Virtu Financial12,282 sh | 12,282 | $59.0K |
| Tower Research Capital (TRC)71 sh | 71 | $343.00 |
| NATIONAL BANK OF CANADA20 sh | 20 | $93.00 |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.