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, Q3 2023
Institutional positions in Aptose Biosciences Inc. as of Sep 30, 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
- 26
- +3 vs. Q2 2023
- Shares held
- 1.09M
- +127.8K (+13.3%) vs. Q2 2023
- Total value
- $3.05M
- −$1.41M (−31.6%) vs. Q2 2023
- New holders
- 5
- 2 more added
- Sold out
- 2
- 5 more reduced
Compare with Q2 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, Q3 2023
Shares, value and share of portfolio for each institution holding Aptose Biosciences Inc.; share changes are against Q2 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| DRW Securities, LLC | 592,829 | $1.66M | 0.13% | 00.0% | Unchanged |
| Sigma Planning Corp | 145,786 | $408.2K | 0.02% | +145,786 | New |
| Nantahala Capital Management, LLC | 136,483 | $382.2K | 0.05% | −9,749−6.7% | Reduced |
| Carlson Capital L P | 106,666 | $298.7K | 0.02% | 00.0% | Unchanged |
| Morgan Stanley | 46,904 | $131.3K | 0.00% | −178−0.4% | Reduced |
| Citadel Advisors LLC | 17,353 | $48.6K | 0.00% | +17,353 | New |
| Cetera Advisors LLC | 14,996 | $42.0K | 0.00% | +14,996 | New |
| TD Waterhouse Canada Inc. | 7,345 | $27.8K | 0.00% | 00.0% | Unchanged |
| Toronto Dominion Bank | 9,198 | $25.8K | 0.00% | +9,198 | New |
| US Bancorp | 2,020 | $5.66K | 0.00% | 00.0% | Unchanged |
| Wells Fargo & Company | 1,712 | $4.79K | 0.00% | 00.0% | Unchanged |
| Bank of America Corp | 1,400 | $3.92K | 0.00% | +1,300+1,300.0% | Added |
| Gleason Group, Inc. | 1,216 | $3.40K | 0.00% | 00.0% | Unchanged |
| Newbridge Financial Services Group, Inc. | 832 | $2.33K | 0.00% | −133−13.8% | Reduced |
| Royal Bank of Canada | 719 | $2.00K | 0.00% | −807−52.9% | Reduced |
| Advisor Group Holdings, Inc. | 420 | $1.18K | 0.00% | 00.0% | Unchanged |
| HighMark Wealth Management LLC | 300 | $840 | 0.00% | 00.0% | Unchanged |
| Beaird Harris Wealth Management, LLC | 250 | $700 | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 188 | $526 | 0.00% | +159+548.3% | Added |
| Johnson Midwest Financial, LLC | 151 | $423 | 0.00% | 00.0% | Unchanged |
| Northwestern Mutual Wealth Management Co | 133 | $372 | 0.00% | 00.0% | Unchanged |
| Group One Trading, L.P. | 115 | $322 | 0.00% | 00.0% | Unchanged |
| Federation des caisses Desjardins du Quebec | 102 | $285 | 0.00% | 00.0% | Unchanged |
| UBS Group AG | 3 | $8 | 0.00% | −24−88.9% | Reduced |
| FIL Ltd | 1 | $4 | 0.00% | +1 | New |
| National Bank of Canada | 1 | $3 | 0.00% | 00.0% | Unchanged |
| Goldman Sachs Group Inc | 0 | $0 | 0.00% | −35,472−100.0% | Sold out |
| Voss Capital, LLC | 0 | $0 | 0.00% | −14,634−100.0% | Sold out |