Quantum BioPharma (QNTM)
Develops clinical-stage treatments while retaining investments and consumer-product economics.
$3.89
vs last close+0.19 (+5.00%)
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13F · 13D/G · Form 4
| Institutions | 6.49% | 415.1K shares | |
|---|---|---|---|
| 27 holders · as of Jun 30, 2026 | |||
| Other | 93.51% | 5.98M shares | |
| remainder | |||
6.40M company shares as of Aug 21, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing
13F, as of Jun 30, 2026
27 holders · 415.1K shares · 6 new positions · 13 increased · 4 reduced · 3 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| Advisorshares Investments LLC | 203.6K | 3.18% | +95.0K | Aug 11, 2026 |
| Jane Street Group, LLC | 48.4K | 0.76% | +16.9K | Aug 14, 2026 |
| Platform Technology Partners | 41.1K | 0.64% | 0 | Jul 24, 2026 |
| UBS Group AG | 33.4K | 0.52% | +26.2K | Aug 13, 2026 |
| Steward Partners Investment Advisory, LLC | 27.9K | 0.44% | +23.5K | Aug 13, 2026 |
| Citadel Advisors LLC | 15.9K | 0.25% | 0 | Sep 2, 2026 |
| Marex Group PLC | 13.4K | 0.21% | −32 | Aug 14, 2026 |
| Mariner, LLC | 10.0K | 0.16% | −59 | Aug 13, 2026 |
13D/G · 5% or more, as filed
No 13D/G filer at 5% or more on record.
Form 4
Latest trades
Nothing filed in the last 12 months.
House and Senate disclosures
Not reported.