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, Q1 2024
Institutional positions in Aptose Biosciences Inc. as of Mar 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
- 25
- −2 vs. Q4 2023
- Shares held
- 1.05M
- −272.6K (−20.6%) vs. Q4 2023
- Total value
- $1.75M
- −$1.62M (−48.0%) vs. Q4 2023
- New holders
- 2
- 2 more added
- Sold out
- 4
- 7 more reduced
Compare with Q4 2023: 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, Q1 2024
Shares, value and share of portfolio for each institution holding Aptose Biosciences Inc.; share changes are against Q4 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| DRW Securities, LLC | 592,829 | $984.1K | 0.06% | 00.0% | Unchanged |
| Sigma Planning Corp | 186,417 | $309.5K | 0.01% | +110,940+147.0% | Added |
| Morgan Stanley | 101,679 | $168.8K | 0.00% | −77,243−43.2% | Reduced |
| Nantahala Capital Management, LLC | 88,540 | $147.0K | 0.01% | −151,724−63.1% | Reduced |
| Citadel Advisors LLC | 25,691 | $42.6K | 0.00% | −36,184−58.5% | Reduced |
| Cetera Investment Advisers | 21,322 | $35.4K | 0.00% | +21,322 | New |
| Texas Capital Bank Wealth Management Services Inc | 12,448 | $20.7K | 0.00% | 00.0% | Unchanged |
| PDS Planning, Inc | 10,000 | $16.6K | 0.00% | +10,000 | New |
| TD Waterhouse Canada Inc. | 7,345 | $15.4K | 0.00% | 00.0% | Unchanged |
| US Bancorp | 2,020 | $3.35K | 0.00% | 00.0% | Unchanged |
| Gleason Group, Inc. | 1,216 | $2.02K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 1,365 | $2.00K | 0.00% | −5,384−79.8% | Reduced |
| Newbridge Financial Services Group, Inc. | 832 | $1.38K | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 420 | $697 | 0.00% | 00.0% | Unchanged |
| HighMark Wealth Management LLC | 300 | $498 | 0.00% | 00.0% | Unchanged |
| Beaird Harris Wealth Management, LLC | 250 | $415 | 0.00% | 00.0% | Unchanged |
| Northwestern Mutual Wealth Management Co | 133 | $221 | 0.00% | −186−58.3% | Reduced |
| Federation des caisses Desjardins du Quebec | 102 | $219 | 0.00% | 00.0% | Unchanged |
| Group One Trading, L.P. | 115 | $191 | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 72 | $120 | 0.00% | +26+56.5% | Added |
| Bank of America Corp | 66 | $110 | 0.00% | −34−34.0% | Reduced |
| Pacific Capital Wealth Advisors, Inc | 6 | $10 | 0.00% | 00.0% | Unchanged |
| FIL Ltd | 1 | $2 | 0.00% | 00.0% | Unchanged |
| Citigroup Inc | 1 | $2 | 0.00% | 00.0% | Unchanged |
| National Bank of Canada | 1 | $1 | 0.00% | −13−92.9% | Reduced |
| Carlson Capital L P | 0 | $0 | 0.00% | −96,666−100.0% | Sold out |
| Cetera Advisors LLC | 0 | $0 | 0.00% | −24,355−100.0% | Sold out |
| Two Sigma Securities, LLC | 0 | $0 | 0.00% | −15,488−100.0% | Sold out |
| UBS Group AG | 0 | $0 | 0.00% | −7,604−100.0% | Sold out |