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 2025
Institutional positions in Aptose Biosciences Inc. as of Mar 31, 2025. 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
- 16
- −10 vs. Q4 2024
- Shares held
- 154.6K
- −3.83M (−96.1%) vs. Q4 2024
- Total value
- $486.8K
- −$410.5K (−45.7%) vs. Q4 2024
- New holders
- 4
- 3 more added
- Sold out
- 14
- 9 more reduced
Compare with Q4 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 | 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 2025
Shares, value and share of portfolio for each institution holding Aptose Biosciences Inc.; share changes are against Q4 2024.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| JPMorgan Chase & Co | 36 | $8 | 0.00% | +36 | New |
| Group One Trading, L.P. | 3 | $9 | 0.00% | −112−97.4% | Reduced |
| SBI Securities Co., Ltd. | 4 | $13 | 0.00% | −131−97.0% | Reduced |
| Danske Bank A/S | 4 | $13 | 0.00% | +4 | New |
| HighMark Wealth Management LLC | 9 | $28 | 0.00% | −291−97.0% | Reduced |
| TD Waterhouse Canada Inc. | 22 | $35 | 0.00% | −662−96.8% | Reduced |
| Newbridge Financial Services Group, Inc. | 26 | $82 | 0.00% | −806−96.9% | Reduced |
| Gleason Group, Inc. | 40 | $126 | 0.00% | −1,176−96.7% | Reduced |
| National Bank of Canada | 93 | $293 | 0.00% | +93 | New |
| Morgan Stanley | 101 | $318 | 0.00% | −5,400−98.2% | Reduced |
| Federation des caisses Desjardins du Quebec | 103 | $319 | 0.00% | +1+1.0% | Added |
| Royal Bank of Canada | 1,351 | $4.00K | 0.00% | +677+100.4% | Added |
| Northwestern Mutual Wealth Management Co | 2,060 | $6.49K | 0.00% | +1,927+1,448.9% | Added |
| Citadel Advisors LLC | 12,007 | $38.0K | 0.00% | +12,007 | New |
| Sigma Planning Corp | 17,389 | $54.8K | 0.00% | −685,995−97.5% | Reduced |
| Bleichroeder LP | 121,366 | $382.3K | 0.10% | −2,378,634−95.1% | Reduced |
| DRW Securities, LLC | 0 | $0 | 0.00% | −592,829−100.0% | Sold out |
| UBS Group AG | 0 | $0 | 0.00% | −57,827−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −43,112−100.0% | Sold out |
| Annandale Capital, LLC | 0 | $0 | 0.00% | −26,666−100.0% | Sold out |
| Cetera Investment Advisers | 0 | $0 | 0.00% | −19,206−100.0% | Sold out |
| Nations Financial Group Inc, | 0 | $0 | 0.00% | −19,500−100.0% | Sold out |
| Two Sigma Securities, LLC | 0 | $0 | 0.00% | −11,398−100.0% | Sold out |
| US Bancorp | 0 | $0 | 0.00% | −2,020−100.0% | Sold out |
| Advisor Group Holdings, Inc. | 0 | $0 | 0.00% | −420−100.0% | Sold out |
| Caldwell Sutter Capital, Inc. | 0 | $0 | 0.00% | −92−100.0% | Sold out |
| Steward Partners Investment Advisory, LLC | 0 | $0 | 0.00% | −3−100.0% | Sold out |
| Pacific Capital Wealth Advisors, Inc | 0 | $0 | 0.00% | −6−100.0% | Sold out |
| FIL Ltd | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Citigroup Inc | 0 | $0 | 0.00% | −1−100.0% | Sold out |