Aptose Biosciences Inc.
APTODelisted- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0000882361
Aptose Biosciences Inc. was delisted in 2025; its insiders filed their last Form 4 on Jul 2, 2026; 24 institutions reported holding it in 13F filings for Q4 2024, worth $892.9K in total; no superinvestor held it.
13F holders, Q4 2024
Institutional positions in Aptose Biosciences Inc. as of Dec 31, 2024. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 24
- −1 vs. Q3 2024
- Shares held
- 3.97M
- +735.4K (+22.8%) vs. Q3 2024
- Total value
- $892.9K
- −$435.1K (−32.8%) vs. Q3 2024
- New holders
- 4
- 1 more added
- Sold out
- 5
- 6 more reduced
Compare with Q3 2024: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting APTO on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 0 | $0 |
| Q1 2026 | 0 | $0 |
| Q4 2025 | 0 | $0 |
| Q3 2025 | 0 | $0 |
| Q2 2025 | 0 | $0 |
| Q1 2025 | 0 | $0 |
| Q4 2024 | 24 | $892.9K |
| Q3 2024 | 25 | $1.33M |
| Q2 2024 | 23 | $2.11M |
| Q1 2024 | 25 | $1.75M |
| Q4 2023 | 27 | $3.37M |
| Q3 2023 | 26 | $3.05M |
| Q2 2023 | 23 | $4.46M |
| Q1 2023 | 0 | $0 |
| Q4 2022 | 0 | $0 |
| Q3 2022 | 0 | $0 |
| Q2 2022 | 0 | $0 |
| Q1 2022 | 0 | $0 |
| Q4 2021 | 0 | $0 |
| Q3 2021 | 0 | $0 |
| Q2 2021 | 0 | $0 |
| Q1 2021 | 0 | $0 |
Institutions, Q4 2024
Shares, value and share of portfolio for each institution holding Aptose Biosciences Inc.; share changes are against Q3 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Bleichroeder LP | 2,500,000 | $563.3K | 0.14% | +2,500,000 | New |
| Sigma Planning Corp | 703,384 | $158.5K | 0.00% | +301,634+75.1% | Added |
| DRW Securities, LLC | 592,829 | $133.6K | 0.01% | 00.0% | Unchanged |
| UBS Group AG | 57,827 | $13.0K | 0.00% | −75,649−56.7% | Reduced |
| HRT Financial LP | 43,112 | $9.00K | 0.00% | +43,112 | New |
| Annandale Capital, LLC | 26,666 | $6.00K | 0.00% | 00.0% | Unchanged |
| Cetera Investment Advisers | 19,206 | $4.40K | 0.00% | −80.0% | Reduced |
| Two Sigma Securities, LLC | 11,398 | $2.57K | 0.00% | −19,029−62.5% | Reduced |
| Morgan Stanley | 5,501 | $1.24K | 0.00% | −25,852−82.5% | Reduced |
| US Bancorp | 2,020 | $455 | 0.00% | 00.0% | Unchanged |
| Gleason Group, Inc. | 1,216 | $274 | 0.00% | 00.0% | Unchanged |
| Newbridge Financial Services Group, Inc. | 832 | $187 | 0.00% | 00.0% | Unchanged |
| TD Waterhouse Canada Inc. | 684 | $154 | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 420 | $95 | 0.00% | 00.0% | Unchanged |
| HighMark Wealth Management LLC | 300 | $68 | 0.00% | 00.0% | Unchanged |
| Northwestern Mutual Wealth Management Co | 133 | $30 | 0.00% | 00.0% | Unchanged |
| SBI Securities Co., Ltd. | 135 | $30 | 0.00% | +135 | New |
| Group One Trading, L.P. | 115 | $26 | 0.00% | 00.0% | Unchanged |
| Federation des caisses Desjardins du Quebec | 102 | $23 | 0.00% | −1−1.0% | Reduced |
| Pacific Capital Wealth Advisors, Inc | 6 | $1 | 0.00% | 00.0% | Unchanged |
| Steward Partners Investment Advisory, LLC | 3 | $1 | 0.00% | +3 | New |
| Royal Bank of Canada | 674 | $0 | 0.00% | −1,060−61.1% | Reduced |
| FIL Ltd | 1 | $0 | 0.00% | 00.0% | Unchanged |
| Citigroup Inc | 1 | $0 | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 0 | $0 | 0.00% | −55−100.0% | Sold out |
| Armistice Capital, LLC | 0 | $0 | 0.00% | −1,888,000−100.0% | Sold out |
| Nantahala Capital Management, LLC | 0 | $0 | 0.00% | −77,340−100.0% | Sold out |
| Texas Capital Bank Wealth Management Services Inc | 0 | $0 | 0.00% | −12,448−100.0% | Sold out |
| PDS Planning, Inc | 0 | $0 | 0.00% | −10,000−100.0% | Sold out |