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 2023
Institutional positions in Aptose Biosciences Inc. as of Dec 31, 2023. 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
- 27
- +2 vs. Q3 2023
- Shares held
- 1.33M
- +238.8K (+22.0%) vs. Q3 2023
- Total value
- $3.37M
- +$317.6K (+10.4%) vs. Q3 2023
- New holders
- 4
- 8 more added
- Sold out
- 2
- 4 more reduced
1 institution that held it in Q3 2023 haven't filed for Q4 2023 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q3 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, Q4 2023
Shares, value and share of portfolio for each institution holding Aptose Biosciences Inc.; share changes are against Q3 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| DRW Securities, LLC | 592,829 | $1.51M | 0.05% | 00.0% | Unchanged |
| Nantahala Capital Management, LLC | 240,264 | $610.3K | 0.03% | +103,781+76.0% | Added |
| Morgan Stanley | 178,922 | $454.5K | 0.00% | +132,018+281.5% | Added |
| Carlson Capital L P | 96,666 | $245.5K | 0.02% | −10,000−9.4% | Reduced |
| Sigma Planning Corp | 75,477 | $191.7K | 0.01% | −70,309−48.2% | Reduced |
| Citadel Advisors LLC | 61,875 | $155.3K | 0.00% | +44,522+256.6% | Added |
| Cetera Advisors LLC | 24,355 | $61.1K | 0.00% | +9,359+62.4% | Added |
| Two Sigma Securities, LLC | 15,488 | $39.3K | 0.00% | +15,488 | New |
| Texas Capital Bank Wealth Management Services Inc | 12,448 | $31.6K | 0.00% | +12,448 | New |
| TD Waterhouse Canada Inc. | 7,345 | $22.3K | 0.00% | 00.0% | Unchanged |
| UBS Group AG | 7,604 | $19.3K | 0.00% | +7,601+253,366.7% | Added |
| Royal Bank of Canada | 6,749 | $17.0K | 0.00% | +6,030+838.7% | Added |
| US Bancorp | 2,020 | $5.13K | 0.00% | 00.0% | Unchanged |
| Gleason Group, Inc. | 1,216 | $3.09K | 0.00% | 00.0% | Unchanged |
| Newbridge Financial Services Group, Inc. | 832 | $2.11K | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 420 | $1.07K | 0.00% | 00.0% | Unchanged |
| Northwestern Mutual Wealth Management Co | 319 | $810 | 0.00% | +186+139.8% | Added |
| HighMark Wealth Management LLC | 300 | $762 | 0.00% | 00.0% | Unchanged |
| Beaird Harris Wealth Management, LLC | 250 | $635 | 0.00% | 00.0% | Unchanged |
| Group One Trading, L.P. | 115 | $289 | 0.00% | 00.0% | Unchanged |
| Bank of America Corp | 100 | $254 | 0.00% | −1,300−92.9% | Reduced |
| Federation des caisses Desjardins du Quebec | 102 | $246 | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 46 | $117 | 0.00% | −1,666−97.3% | Reduced |
| National Bank of Canada | 14 | $33 | 0.00% | +13+1,300.0% | Added |
| Pacific Capital Wealth Advisors, Inc | 6 | $15 | 0.00% | +6 | New |
| FIL Ltd | 1 | $3 | 0.00% | 00.0% | Unchanged |
| Citigroup Inc | 1 | $3 | 0.00% | +1 | New |
| Toronto Dominion Bank | 0 | $0 | 0.00% | −9,198−100.0% | Sold out |
| Tower Research Capital LLC (TRC) | 0 | $0 | 0.00% | −188−100.0% | Sold out |
| Johnson Midwest Financial, LLC | – | – | – | – | Not filed |