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, 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
- 28
- +3 vs. Q2 2023
- Shares held
- 1.16M
- +144.5K (+14.3%) vs. Q2 2023
- Total value
- $3.25M
- −$1.46M (−31.1%) vs. Q2 2023
- New holders
- 5
- 3 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 | 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, 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 |
|---|---|---|---|---|---|
| National Bank of Canada | 1 | $3 | 0.00% | 00.0% | Unchanged |
| FIL Ltd | 1 | $4 | 0.00% | +1 | New |
| UBS Group AG | 3 | $8 | 0.00% | −24−88.9% | Reduced |
| Caldwell Sutter Capital, Inc. | 92 | $258 | 0.00% | 00.0% | Unchanged |
| Federation des caisses Desjardins du Quebec | 102 | $285 | 0.00% | 00.0% | Unchanged |
| Group One Trading, L.P. | 115 | $322 | 0.00% | 00.0% | Unchanged |
| Northwestern Mutual Wealth Management Co | 133 | $372 | 0.00% | 00.0% | Unchanged |
| Johnson Midwest Financial, LLC | 151 | $423 | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 188 | $526 | 0.00% | +159+548.3% | Added |
| Beaird Harris Wealth Management, LLC | 250 | $700 | 0.00% | 00.0% | Unchanged |
| HighMark Wealth Management LLC | 300 | $840 | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 420 | $1.18K | 0.00% | 00.0% | Unchanged |
| Royal Bank of Canada | 719 | $2.00K | 0.00% | −807−52.9% | Reduced |
| Newbridge Financial Services Group, Inc. | 832 | $2.33K | 0.00% | −133−13.8% | Reduced |
| Gleason Group, Inc. | 1,216 | $3.40K | 0.00% | 00.0% | Unchanged |
| Bank of America Corp | 1,400 | $3.92K | 0.00% | +1,300+1,300.0% | Added |
| Wells Fargo & Company | 1,712 | $4.79K | 0.00% | 00.0% | Unchanged |
| US Bancorp | 2,020 | $5.66K | 0.00% | 00.0% | Unchanged |
| Toronto Dominion Bank | 4,599 | $12.9K | 0.00% | +4,599 | New |
| TD Waterhouse Canada Inc. | 7,345 | $27.8K | 0.00% | 00.0% | Unchanged |
| Cetera Advisors LLC | 14,996 | $42.0K | 0.00% | +14,996 | New |
| Citadel Advisors LLC | 17,353 | $48.6K | 0.00% | +17,353 | New |
| Morgan Stanley | 46,904 | $131.3K | 0.00% | −178−0.4% | Reduced |
| Annandale Capital, LLC | 74,666 | $209.0K | 0.06% | +21,334+40.0% | Added |
| Carlson Capital L P | 106,666 | $298.7K | 0.02% | 00.0% | Unchanged |
| Nantahala Capital Management, LLC | 136,483 | $382.2K | 0.05% | −9,749−6.7% | Reduced |
| Sigma Planning Corp | 145,786 | $408.2K | 0.02% | +145,786 | New |
| DRW Securities, LLC | 592,829 | $1.66M | 0.13% | 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 |