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
APTO is no longer listed, so this page shows Q4 2024. 13F filings for later quarters list far fewer holders.
- 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 |
|---|---|---|---|---|---|
| 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 |
| Pacific Capital Wealth Advisors, Inc | 6 | $1 | 0.00% | 00.0% | Unchanged |
| Steward Partners Investment Advisory, LLC | 3 | $1 | 0.00% | +3 | New |
| Federation des caisses Desjardins du Quebec | 102 | $23 | 0.00% | −1−1.0% | Reduced |
| Group One Trading, L.P. | 115 | $26 | 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 |
| HighMark Wealth Management LLC | 300 | $68 | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 420 | $95 | 0.00% | 00.0% | Unchanged |
| TD Waterhouse Canada Inc. | 684 | $154 | 0.00% | 00.0% | Unchanged |
| Newbridge Financial Services Group, Inc. | 832 | $187 | 0.00% | 00.0% | Unchanged |
| Gleason Group, Inc. | 1,216 | $274 | 0.00% | 00.0% | Unchanged |
| US Bancorp | 2,020 | $455 | 0.00% | 00.0% | Unchanged |
| Morgan Stanley | 5,501 | $1.24K | 0.00% | −25,852−82.5% | Reduced |
| Two Sigma Securities, LLC | 11,398 | $2.57K | 0.00% | −19,029−62.5% | Reduced |
| Cetera Investment Advisers | 19,206 | $4.40K | 0.00% | −80.0% | Reduced |
| Annandale Capital, LLC | 26,666 | $6.00K | 0.00% | 00.0% | Unchanged |
| HRT Financial LP | 43,112 | $9.00K | 0.00% | +43,112 | New |
| UBS Group AG | 57,827 | $13.0K | 0.00% | −75,649−56.7% | Reduced |
| DRW Securities, LLC | 592,829 | $133.6K | 0.01% | 00.0% | Unchanged |
| Sigma Planning Corp | 703,384 | $158.5K | 0.00% | +301,634+75.1% | Added |
| Bleichroeder LP | 2,500,000 | $563.3K | 0.14% | +2,500,000 | New |
| 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 |