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, Q2 2023
Institutional positions in Aptose Biosciences Inc. as of Jun 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
- 25
- −20 vs. Q1 2023
- Shares held
- 1.01M
- −392.1K (−27.9%) vs. Q1 2023Converted for a 1-for-15 split
- Total value
- $4.71M
- −$8.80M (−65.1%) vs. Q1 2023
- New holders
- 3
- 1 more added
- Sold out
- 23
- 9 more reduced
Compare with Q1 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, Q2 2023
Shares, value and share of portfolio for each institution holding Aptose Biosciences Inc.; share changes are against Q1 2023.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| National Bank of Canada | 1 | $5 | 0.00% | −1−58.3% | ReducedConverted for a 1-for-15 split |
| UBS Group AG | 27 | $125 | 0.00% | −248−90.2% | ReducedConverted for a 1-for-15 split |
| Tower Research Capital LLC (TRC) | 29 | $135 | 0.00% | +29 | New |
| Caldwell Sutter Capital, Inc. | 92 | $427 | 0.00% | +92 | New |
| Bank of America Corp | 100 | $464 | 0.00% | +100 | New |
| Federation des caisses Desjardins du Quebec | 102 | $465 | 0.00% | −2−1.8% | ReducedConverted for a 1-for-15 split |
| Group One Trading, L.P. | 115 | $534 | 0.00% | −141−55.0% | ReducedConverted for a 1-for-15 split |
| Northwestern Mutual Wealth Management Co | 133 | $617 | 0.00% | 00.0% | UnchangedConverted for a 1-for-15 split |
| Johnson Midwest Financial, LLC | 151 | $701 | 0.00% | 00.0% | UnchangedConverted for a 1-for-15 split |
| Beaird Harris Wealth Management, LLC | 250 | $1.16K | 0.00% | 00.0% | UnchangedConverted for a 1-for-15 split |
| HighMark Wealth Management LLC | 300 | $1.39K | 0.00% | 00.0% | UnchangedConverted for a 1-for-15 split |
| Advisor Group Holdings, Inc. | 420 | $1.95K | 0.00% | 00.0% | UnchangedConverted for a 1-for-15 split |
| Newbridge Financial Services Group, Inc. | 965 | $4.48K | 0.00% | 00.0% | UnchangedConverted for a 1-for-15 split |
| Gleason Group, Inc. | 1,216 | $5.64K | 0.00% | 00.0% | UnchangedConverted for a 1-for-15 split |
| Wells Fargo & Company | 1,712 | $7.94K | 0.00% | −668−28.1% | ReducedConverted for a 1-for-15 split |
| Royal Bank of Canada | 1,526 | $8.00K | 0.00% | +733+92.5% | AddedConverted for a 1-for-15 split |
| US Bancorp | 2,020 | $9.37K | 0.00% | 00.0% | UnchangedConverted for a 1-for-15 split |
| TD Waterhouse Canada Inc. | 7,345 | $44.4K | 0.00% | 00.0% | UnchangedConverted for a 1-for-15 split |
| Voss Capital, LLC | 14,634 | $67.9K | 0.01% | −22,033−60.1% | ReducedConverted for a 1-for-15 split |
| Goldman Sachs Group Inc | 35,472 | $164.6K | 0.00% | −8,728−19.7% | ReducedConverted for a 1-for-15 split |
| Morgan Stanley | 47,082 | $218.5K | 0.00% | 00.0% | UnchangedConverted for a 1-for-15 split |
| Annandale Capital, LLC | 53,332 | $247.0K | 0.07% | 00.0% | UnchangedConverted for a 1-for-15 split |
| Carlson Capital L P | 106,666 | $494.9K | 0.04% | −3,334−3.0% | ReducedConverted for a 1-for-15 split |
| Nantahala Capital Management, LLC | 146,232 | $678.5K | 0.08% | −185,700−55.9% | ReducedConverted for a 1-for-15 split |
| DRW Securities, LLC | 592,829 | $2.75M | 0.21% | 00.0% | UnchangedConverted for a 1-for-15 split |
| Sigma Planning Corp | 0 | $0 | 0.00% | −96,303−100.0% | Sold outConverted for a 1-for-15 split |
| Renaissance Technologies LLC | 0 | $0 | 0.00% | −21,386−100.0% | Sold outConverted for a 1-for-15 split |
| Formidable Asset Management, LLC | 0 | $0 | 0.00% | −6,000−100.0% | Sold outConverted for a 1-for-15 split |
| Cetera Advisors LLC | 0 | $0 | 0.00% | −5,788−100.0% | Sold outConverted for a 1-for-15 split |
| Gagnon Securities LLC | 0 | $0 | 0.00% | −5,094−100.0% | Sold outConverted for a 1-for-15 split |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −4,697−100.0% | Sold outConverted for a 1-for-15 split |
| Arrowroot Family Office, LLC | 0 | $0 | 0.00% | −4,479−100.0% | Sold outConverted for a 1-for-15 split |
| Millennium Management LLC | 0 | $0 | 0.00% | −3,811−100.0% | Sold outConverted for a 1-for-15 split |
| Toronto Dominion Bank | 0 | $0 | 0.00% | −3,233−100.0% | Sold outConverted for a 1-for-15 split |
| Two Sigma Investments, LP | 0 | $0 | 0.00% | −2,874−100.0% | Sold outConverted for a 1-for-15 split |
| Evanson Asset Management, LLC | 0 | $0 | 0.00% | −2,633−100.0% | Sold outConverted for a 1-for-15 split |
| J Arnold Wealth Management Co | 0 | $0 | 0.00% | −2,627−100.0% | Sold outConverted for a 1-for-15 split |
| Raymond James & Associates | 0 | $0 | 0.00% | −2,472−100.0% | Sold outConverted for a 1-for-15 split |
| Geode Capital Management, LLC | 0 | $0 | 0.00% | −2,164−100.0% | Sold outConverted for a 1-for-15 split |
| Transcend Wealth Collective, LLC | 0 | $0 | 0.00% | −1,600−100.0% | Sold outConverted for a 1-for-15 split |
| Sequoia Financial Advisors, LLC | 0 | $0 | 0.00% | −1,333−100.0% | Sold outConverted for a 1-for-15 split |
| Newman Dignan & Sheerar, Inc. | 0 | $0 | 0.00% | −1,261−100.0% | Sold outConverted for a 1-for-15 split |
| WealthTrust Axiom LLC | 0 | $0 | 0.00% | −1,000−100.0% | Sold outConverted for a 1-for-15 split |
| Jane Street Group, LLC | 0 | $0 | 0.00% | −795−100.0% | Sold outConverted for a 1-for-15 split |
| BNP Paribas Arbitrage, SA | 0 | $0 | 0.00% | −780−100.0% | Sold outConverted for a 1-for-15 split |
| Warberg Asset Management LLC | 0 | $0 | 0.00% | −767−100.0% | Sold outConverted for a 1-for-15 split |
| PDS Planning, Inc | 0 | $0 | 0.00% | −667−100.0% | Sold outConverted for a 1-for-15 split |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −617−100.0% | Sold outConverted for a 1-for-15 split |