Who Owns QUANTUM BIOPHARMA LTD (QNTM)? -- Institutional Holders (2026-03-31)
30 institutions reported holding $1.2M of QUANTUM BIOPHARMA LTD (QNTM) in SEC 13F filings for 2026-03-31. Largest institutional holders: AdvisorShares Investments LLC ($524,495), Platform Technology Partners ($198,590), JANE STREET GROUP, LLC ($152,149), CITADEL ADVISORS LLC ($76,618), Marex Group plc ($65,050). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|
| 1 | AdvisorShares Investments LLC | $524,495 | 108,591 | Added |
| 2 | Platform Technology Partners | $198,590 | 41,116 | New |
| 3 | JANE STREET GROUP, LLC | $152,149 | 31,501 | Added |
| 4 | CITADEL ADVISORS LLC | $76,618 | 15,863 | Hold |
| 5 | Marex Group plc | $65,050 | 13,468 | Added |
| 6 | Virtu Financial LLC | $59,000 | 12,282 | Added |
| 7 | Mariner, LLC | $48,553 | 10,059 | New |
| 8 | UBS Group AG | $34,955 | 7,237 | Added |
| 9 | OSAIC HOLDINGS, INC. | $30,790 | 6,375 | Added |
| 10 | Steward Partners Investment Advisory, LLC | $21,160 | 4,381 | Hold |
| 11 | Atlantic Union Bankshares Corp | $4,830 | 1,000 | Hold |
| 12 | Farther Finance Advisors, LLC | $4,410 | 1,000 | Hold |
| 13 | JONES FINANCIAL COMPANIES LLLP | $3,339 | 700 | New |
| 14 | Cetera Trust Company, N.A | $1,208 | 250 | Hold |
| 15 | WELLS FARGO & COMPANY/MN | $477 | 100 | New |
| 16 | Federation des caisses Desjardins du Quebec | $369 | 93 | Hold |
| 17 | SBI Securities Co., Ltd. | $362 | 75 | Added |
| 18 | Tower Research Capital LLC (TRC) | $343 | 71 | New |
| 19 | GROUP ONE TRADING LLC | $164 | 34 | Hold |
| 20 | Rockefeller Capital Management L.P. | $145 | 30 | Hold |
| 21 | NATIONAL BANK OF CANADA /FI/ | $93 | 20 | New |
| 22 | TD Waterhouse Canada Inc. | $88 | 20 | New |
| 23 | Activest Wealth Management | $72 | 15 | Hold |
| 24 | Purpose Unlimited Inc. | $4 | 1 | Hold |
| 25 | GTS SECURITIES LLC | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-03-31