APTO

Aptose Biosciences, Inc.
APTO

Overview Fund Activity
Delisted

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

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70 hedge funds and large institutions have $313M invested in Aptose Biosciences, Inc. in 2021 Q1 according to their latest regulatory filings, with 16 funds opening new positions, 22 increasing their positions, 18 reducing their positions, and 11 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
70
Holders Change
+5
Holders Change %
+7.69%
% of All Funds
1.23%
Holding in Top 10
3
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.05%
New
16
Increased
22
Reduced
18
Closed
11
Calls
$2.69M
Puts
$1.37M
Net Calls
+$1.32M
Net Calls Change
+$194K

Top Buyers

1
CAM
1
Cormorant Asset Management
Massachusetts
$23.9M
2
FLAM
2
First Light Asset Management
Minnesota
$18.5M
3
VA
3
VR Adviser
New York
$9.59M
4
WP
4
Woodline Partners
California
$13.3M
5
Marshall Wace
5
Marshall Wace
United Kingdom
$3.97M

Top Sellers

1
CA
1
Corriente Advisors
Texas
$0
2
PAMU
2
Pictet Asset Management (UK)
United Kingdom
$16.1M
3
SMH
3
Sanders Morris Harris
Texas
$144K
4
PM
4
Prosight Management
Texas
$896K
5
6CM
5
683 Capital Management
New York
$3.59M
Name Holding Trade Value Shares
Change 		Shares
Change %
Two Sigma Advisers
26
Two Sigma Advisers
New York
$1.27M -$296K -110 -19%
Man Group
27
Man Group
United Kingdom
$1.16M +$83.3K +31 +8%
RCG
28
Rock Creek Group
District of Columbia
$1.14M -$689K -256 -38%
PFGIA
29
Patriot Financial Group Insurance Agency
Massachusetts
$1.03M +$13.5K +5 +1%
PM
30
Prosight Management
Texas
$896K -$4.04M -1,500 -82%
GS
31
Gagnon Securities
New York
$655K +$99.3K +37 +18%
IC
32
Ikarian Capital
Texas
$622K +$598K +222 +2,467%
SCM
33
Silverarc Capital Management
Massachusetts
$598K +$598K +222 New
DAM
34
Doheny Asset Management
California
$550K +$172K +64 +45%
EP
35
Eversept Partners
New York
$478K +$478K +178 New
WHG
36
Westwood Holdings Group
Texas
$448K – – –
Simplex Trading
37
Simplex Trading
Illinois
$423K +$307K +114 +265%
Geode Capital Management
38
Geode Capital Management
Massachusetts
$352K – – –
SCM
39
Sio Capital Management
New York
$246K +$246K +91 New
Citadel Advisors
40
Citadel Advisors
Florida
$233K -$321K -120 -58%
MWNA
41
Marshall Wace North America
New York
$201K +$201K +75 New
US Bancorp
42
US Bancorp
Minnesota
$181K – – –
RJA
43
Raymond James & Associates
Florida
$165K -$16.2K -6 -9%
PSP
44
Principal Street Partners
Tennessee
$159K +$159K +59 New
Bank of America
45
Bank of America
North Carolina
$149K +$146K +55 +5,500%
SMH
46
Sanders Morris Harris
Texas
$144K -$5.14M -2,000 -97%
TCA
47
Transcend Capital Advisors
New Jersey
$144K +$144K +53 New
Renaissance Technologies
48
Renaissance Technologies
New York
$105K -$213K -79 -67%
Bank of Montreal
49
Bank of Montreal
Ontario, Canada
$90K -$21.3K -9 -19%
NFSG
50
Newbridge Financial Services Group
Florida
$87K – – –
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