Aptose BiosciencesAPTOF
13F holders, Q2 2026 (June 30)4holders
0new positions
0sold out
$1.60avg. 13F price*
At the end of Q2 2026, 4 institutions reported holding Aptose Biosciences Inc. (APTOF) in their 13F filings, unchanged from Q1 2026. 0 opened new positions and 0 sold out. The largest holders were DRW Securities, LLC ($32K), Gleason Group, Inc. ($6K) and Caldwell Sutter Capital, Inc. ($327).
- Company
- Aptose Biosciences Inc.
- CUSIP
- 03835T408
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2026 → Q2 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 0 | $0 |
| Exits | 0 | $0 |
All 13F filers, Q1 2026 → Q2 2026: 200 shares bought, net +200 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 4 holders
| DRW Securities, LLC | 0.00% | No change | 19,761 | $32K |
| Gleason Group, Inc. | 0.00% | No change | 4,206 | $6K |
| Caldwell Sutter Capital, Inc. | 0.00% | Add +10000.0% | 202 | $327 |
| Farther Finance Advisors, LLC | 0.00% | No change | 10 | $15 |
"% of holder's portfolio" is APTOF's weight in each manager's 13F, not the share of Aptose Biosciences Inc. the manager owns.