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APTO

Aptose Biosciences, Inc.
APTO

Delisted

APTO was delisted on the 1st of April, 2025.

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4 hedge funds and large institutions have $20.7K invested in Aptose Biosciences, Inc. in 2025 Q2 according to their latest regulatory filings, with 2 funds opening new positions, 1 increasing their positions, 0 reducing their positions, and 14 closing their positions.

New
Increased
Maintained
Reduced
Closed

75% less funds holding

Funds holding: 16 → 4 (-12)

86% less first-time investments, than exits

New positions opened: 2 | Existing positions closed: 14

96% less capital invested

Capital invested by funds: $487K → $20.7K (-$466K)

Holders
4
Holders Change
-12
Holders Change %
-75%
% of All Funds
0.05%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
2
Increased
1
Reduced
–
Closed
14
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

Rank Fund Capital Flow
1
DS
DRW Securities
Illinois
+$33.8K
2
GG
Gleason Group
Kentucky
+$7.12K
3
CSC
Caldwell Sutter Capital
California
+$3

Top Sellers

Rank Fund Capital Flow
1
BL
Bleichroeder LP
New York
-$382K
2
SPC
Sigma Planning Corp
Michigan
-$54.8K
3
Citadel Advisors
Citadel Advisors
Florida
-$38K
4
Northwestern Mutual Wealth Management
Northwestern Mutual Wealth Management
Wisconsin
-$6.49K
5
Royal Bank of Canada
Royal Bank of Canada
Ontario, Canada
-$4K
Name Holding Trade Value Shares
Change 		Change in
Stake
DS
1
DRW Securities
Illinois
$17.1K +$33.8K +19,761 New
GG
2
Gleason Group
Kentucky
$3.55K +$7.12K +4,166 +10,415%
TWC
3
TD Waterhouse Canada
Ontario, Canada
$19 – – –
CSC
4
Caldwell Sutter Capital
California
$2 +$3 +2 New
BL
5
Bleichroeder LP
New York
– -$382K -121,366 Closed
SPC
6
Sigma Planning Corp
Michigan
– -$54.8K -17,389 Closed
Citadel Advisors
7
Citadel Advisors
Florida
– -$38K -12,007 Closed
Northwestern Mutual Wealth Management
8
Northwestern Mutual Wealth Management
Wisconsin
– -$6.49K -2,060 Closed
Royal Bank of Canada
9
Royal Bank of Canada
Ontario, Canada
– -$4K -1,351 Closed
FDCDDQ
10
Federation des caisses Desjardins du Quebec
Quebec, Canada
– -$319 -103 Closed
Morgan Stanley
11
Morgan Stanley
New York
– -$318 -101 Closed
National Bank of Canada
12
National Bank of Canada
Quebec, Canada
– -$293 -93 Closed
JP Morgan Chase
13
JP Morgan Chase
New York
– -$8 -36 Closed
NFSG
14
Newbridge Financial Services Group
Florida
– -$82 -26 Closed
HWM
15
HighMark Wealth Management
Minnesota
– -$28 -9 Closed
DB
16
Danske Bank
Denmark
– -$13 -4 Closed
SS
17
SBI Securities
Japan
– -$13 -4 Closed
Group One Trading
18
Group One Trading
Illinois
– -$9 -3 Closed

APTO Hedge Fund Activity: Q2 2025 in Review

4 of the 7,595 institutional investors tracked by Wall St. Rank reported a position in Aptose Biosciences, Inc. (APTO) for Q2 2025, worth a combined $20.7K — down 96% from $487K a quarter earlier.

Sellers outnumbered buyers: 14 funds closed out of APTO and 2 opened new positions — a net loss of 12 holders — while 0 trimmed existing stakes and 1 added.

The largest buyer was DRW Securities, opening a new position worth an estimated $33.8K. The largest seller was Bleichroeder LP, exiting entirely with an estimated $382K sold.

  • 4 institutional investors held Aptose Biosciences, Inc. (APTO) as of Q2 2025, down from 16 in Q1 2025.
  • Funds reported $20.7K of Aptose Biosciences, Inc. stock for Q2 2025, down 96% quarter-over-quarter.
  • 2 funds opened new Aptose Biosciences, Inc. positions in Q2 2025 and 14 closed out, a net change of -12 holders.
  • The largest Aptose Biosciences, Inc. buyer in Q2 2025 was DRW Securities, an estimated $33.8K added.
  • The largest Aptose Biosciences, Inc. seller in Q2 2025 was Bleichroeder LP, an estimated $382K sold.

Based on aggregated 13F filings for Q2 2025.