Quantum Biopharma Ltd.
QNTMNasdaqHealthcare · Pharmaceutical Preparations · A6 · SEC filings ↗ · Compare ⊕
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SEC XBRL · annualNo structured XBRL financials available (common for pre-2009 filers, foreign issuers, or companies that never reported as a US public company).
5%+ owners
SEC Schedule 13D / 13G · last 3 yrs- Malone Wealth Ventures LlcActivist (13D)Feb 3, 2026
Holders who disclosed a 5%+ stake. 13D signals intent to influence or control; 13G is a passive holding. Latest filing per holder — open it for the exact stake.
Short interest
FINRA · bi-monthly| Settlement | Shares short | Days to cover | Δ vs prior |
|---|---|---|---|
| May 15, 2026 | 221,665 | 1.0 | -21.5% |
| Apr 30, 2026 | 282,526 | 1.0 | +56.2% |
| Apr 15, 2026 | 180,859 | 1.0 | -27.1% |
| Mar 31, 2026 | 248,253 | 1.0 | +8.3% |
| Mar 13, 2026 | 229,208 | 1.0 | +174.3% |
Shares sold short as reported to FINRA. Days-to-cover = short shares ÷ average daily volume — higher means more potential squeeze pressure.
Recent SEC filings
All filings ↗- 6-KFORM 6-KMay 18, 2026
- 6-KFORM 6-KMay 7, 2026
- 6-KFORM 6-KMay 6, 2026
- 6-KFORM 6-KApr 22, 2026
- 6-KFORM 6-KApr 2, 2026
- 6-KFORM 6-KApr 1, 2026
- 6-KFORM 6-KMar 30, 2026
- 6-KFORM 6-KMar 27, 2026
- 20-FFORM 20-FMar 26, 2026
- 6-KFORM 6-KMar 26, 2026
- 6-KFORM 6-KMar 23, 2026
- SCHEDULE 13G/AFeb 3, 2026
- 6-KFORM 6-KDec 23, 2025
- 6-KDec 22, 2025
- 424B5Dec 22, 2025
Event-driven situations (1)
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