Aptose Biosciences Inc.
APTODelisted Jul 21, 2025- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0000882361
Aptose Biosciences Inc. was delisted on Jul 21, 2025; its insiders filed their last Form 4 on Jul 2, 2026; 16 institutions reported holding it in 13F filings for Q1 2025, worth $486.8K 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
- 27
- −2 vs. Q4 2023
- Shares held
- 1.01M
- −178.8K (−15.0%) vs. Q4 2023
- Total value
- $1.68M
- −$1.34M (−44.4%) vs. Q4 2023
- New holders
- 2
- 2 more added
- Sold out
- 4
- 8 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 | 4 | $38.7K |
| Q1 2026 | 4 | $40.0K |
| Q4 2025 | 4 | $35.8K |
| Q3 2025 | 3 | $28.1K |
| Q2 2025 | 4 | $20.7K |
| Q1 2025 | 16 | $486.8K |
| Q4 2024 | 26 | $897.3K |
| Q3 2024 | 26 | $1.33M |
| Q2 2024 | 24 | $2.06M |
| Q1 2024 | 27 | $1.68M |
| Q4 2023 | 29 | $3.02M |
| Q3 2023 | 28 | $3.25M |
| Q2 2023 | 25 | $4.71M |
| Q1 2023 | 45 | $13.5M |
| Q4 2022 | 49 | $13.4M |
| Q3 2022 | 51 | $14.7M |
| Q2 2022 | 52 | $18.8M |
| Q1 2022 | 54 | $39.0M |
| Q4 2021 | 59 | $42.6M |
| Q3 2021 | 67 | $86.5M |
| Q2 2021 | 66 | $156.7M |
| Q1 2021 | 73 | $312.9M |
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 |
|---|---|---|---|---|---|
| National Bank of Canada | 1 | $1 | 0.00% | −13−92.9% | Reduced |
| FIL Ltd | 1 | $2 | 0.00% | 00.0% | Unchanged |
| Citigroup Inc | 1 | $2 | 0.00% | 00.0% | Unchanged |
| Pacific Capital Wealth Advisors, Inc | 6 | $10 | 0.00% | 00.0% | Unchanged |
| Bank of America Corp | 66 | $110 | 0.00% | −34−34.0% | Reduced |
| Wells Fargo & Company | 72 | $120 | 0.00% | +26+56.5% | Added |
| Caldwell Sutter Capital, Inc. | 92 | $153 | 0.00% | 00.0% | Unchanged |
| Group One Trading, L.P. | 115 | $191 | 0.00% | 00.0% | Unchanged |
| Federation des caisses Desjardins du Quebec | 102 | $219 | 0.00% | 00.0% | Unchanged |
| Northwestern Mutual Wealth Management Co | 133 | $221 | 0.00% | −186−58.3% | Reduced |
| Beaird Harris Wealth Management, LLC | 250 | $415 | 0.00% | 00.0% | Unchanged |
| HighMark Wealth Management LLC | 300 | $498 | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 420 | $697 | 0.00% | 00.0% | Unchanged |
| Newbridge Financial Services Group, Inc. | 832 | $1.38K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 1,365 | $2.00K | 0.00% | −5,384−79.8% | Reduced |
| Gleason Group, Inc. | 1,216 | $2.02K | 0.00% | 00.0% | Unchanged |
| US Bancorp | 2,020 | $3.35K | 0.00% | 00.0% | Unchanged |
| TD Waterhouse Canada Inc. | 7,345 | $15.4K | 0.00% | 00.0% | Unchanged |
| PDS Planning, Inc | 10,000 | $16.6K | 0.00% | +10,000 | New |
| Texas Capital Bank Wealth Management Services Inc | 12,448 | $20.7K | 0.00% | 00.0% | Unchanged |
| Cetera Investment Advisers | 21,322 | $35.4K | 0.00% | +21,322 | New |
| Citadel Advisors LLC | 25,691 | $42.6K | 0.00% | −36,184−58.5% | Reduced |
| Annandale Capital, LLC | 26,666 | $44.0K | 0.01% | −48,000−64.3% | Reduced |
| Morgan Stanley | 33,893 | $56.3K | 0.00% | −55,568−62.1% | Reduced |
| Nantahala Capital Management, LLC | 88,540 | $147.0K | 0.01% | −31,592−26.3% | Reduced |
| Sigma Planning Corp | 186,417 | $309.5K | 0.01% | +110,940+147.0% | Added |
| DRW Securities, LLC | 592,829 | $984.1K | 0.06% | 00.0% | Unchanged |
| 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 |