Aptose Biosciences, Inc.
APTO
APTO was delisted on the 1st of April, 2025.
16 hedge funds and large institutions have $487K invested in Aptose Biosciences, Inc. in 2025 Q1 according to their latest regulatory filings, with 4 funds opening new positions, 4 increasing their positions, 8 reducing their positions, and 10 closing their positions.
27% less funds holding
Funds holding: 22 → 16 (-6)
46% less capital invested
Capital invested by funds: $897K → $487K (-$410K)
50% less repeat investments, than reductions
Existing positions increased: 4 | Existing positions reduced: 8
60% less first-time investments, than exits
New positions opened: 4 | Existing positions closed: 10
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BL
Bleichroeder LP
New York
|
+$185K |
| 2 |
Citadel Advisors
Miami,
Florida
|
+$58.4K |
| 3 |
Northwestern Mutual Wealth Management
Milwaukee,
Wisconsin
|
+$10K |
| 4 |
Royal Bank of Canada
Toronto,
Ontario, Canada
|
+$6.46K |
| 5 |
FDCDDQ
Federation des caisses Desjardins du Quebec
Levis,
Quebec, Canada
|
+$486 |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
DS
DRW Securities
Chicago,
Illinois
|
-$134K |
| 2 |
SPC
Sigma Planning Corp
Ann Arbor,
Michigan
|
-$29.5K |
| 3 |
UBS Group
Zurich,
Switzerland
|
-$13K |
| 4 |
HF
HRT Financial
New York
|
-$9K |
| 5 |
AC
Annandale Capital
Dallas,
Texas
|
-$6K |
APTO Hedge Fund Activity: Q1 2025 in Review
16 of the 7,458 institutional investors tracked by Wall St. Rank reported a position in Aptose Biosciences, Inc. (APTO) for Q1 2025, worth a combined $487K — down 46% from $897K a quarter earlier.
Sellers outnumbered buyers: 10 funds closed out of APTO and 4 opened new positions — a net loss of 6 holders — while 8 trimmed existing stakes and 4 added.
The largest buyer was Bleichroeder LP, adding an estimated $185K. The largest seller was DRW Securities, exiting entirely with an estimated $134K sold.
- 16 institutional investors held Aptose Biosciences, Inc. (APTO) as of Q1 2025, down from 22 in Q4 2024.
- Funds reported $487K of Aptose Biosciences, Inc. stock for Q1 2025, down 46% quarter-over-quarter.
- 4 funds opened new Aptose Biosciences, Inc. positions in Q1 2025 and 10 closed out, a net change of -6 holders.
- The largest Aptose Biosciences, Inc. buyer in Q1 2025 was Bleichroeder LP, an estimated $185K added.
- The largest Aptose Biosciences, Inc. seller in Q1 2025 was DRW Securities, an estimated $134K sold.
Based on aggregated 13F filings for Q1 2025.