Quantum Biopharma Ltd. Subordinate Voting Shares Class B · NASDAQ:QNTM
Quantum Biopharma Ltd. Subordinate Voting Shares Class B shareholders
As of Jun 30, 2026, 26 institutions reported holding Quantum Biopharma Ltd. Subordinate Voting Shares Class B, 6.5% of its shares. Largest: AdvisorShares Investments LLC, Jane Street and Platform Technology Partners. New holders, exits, insiders and big stakes, each with its filing.
| Holder | Shares | % of Quantum Biopharma Ltd. Subordinate Voting Shares Class B | Change | Filed |
|---|---|---|---|---|
| AdvisorShares Investments LLC | 204K | 3.2% | +94,973 | Aug 11, 2026 |
| Jane Street | 48,355 | 0.75% | +16,854 | Aug 14, 2026 |
| Platform Technology Partners | 41,116 | 0.64% | no change | Jul 24, 2026 |
| UBS | 33,405 | 0.52% | +26,168 | Aug 13, 2026 |
| Steward Partners Investment Advisory, LLC | 27,881 | 0.43% | +23,500 | Aug 13, 2026 |
| Citadel | 15,863 | 0.25% | no change | Aug 14, 2026 |
| Marex Group Ltd | 13,436 | 0.21% | −32 | Aug 14, 2026 |
| Mariner, LLC | 10,000 | 0.16% | −59 | Aug 13, 2026 |
| Lanark Financial, Inc. | 7,000 | 0.11% | new | Jul 21, 2026 |
| Osaic Holdings, Inc. | 6,295 | 0.10% | −80 | Aug 14, 2026 |
Quantum Biopharma Ltd. Subordinate Voting Shares Class B insider trades