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.

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 %
O
1
OrbiMed
New York
$48M – – –
DS
2
DRW Securities
Illinois
$47.7M – – –
NCM
3
Nantahala Capital Management
Connecticut
$46.2M +$2.79M +1,037 +6%
CAM
4
Cormorant Asset Management
Massachusetts
$23.9M +$23.9M +8,889 New
FLAM
5
First Light Asset Management
Minnesota
$18.5M +$13.5M +5,030 +270%
PAMU
6
Pictet Asset Management (UK)
United Kingdom
$16.1M -$7.41M -2,747 -31%
EAM
7
Eventide Asset Management
Massachusetts
$13.7M – – –
WP
8
Woodline Partners
California
$13.3M +$7.51M +2,792 +131%
PCH
9
Polar Capital Holdings
United Kingdom
$11M +$169K +63 +2%
VA
10
VR Adviser
New York
$9.59M +$9.59M +3,568 New
ABG
11
Ally Bridge Group
New York
$8.42M – – –
OM
12
Opaleye Management
Massachusetts
$5.21M +$428K +159 +9%
SI
13
Sofinnova Investments
California
$4.16M -$1.7M -631 -29%
PAWC
14
P.A.W. Capital
Connecticut
$4.12M -$360K -134 -8%
Goldman Sachs
15
Goldman Sachs
New York
$3.99M +$8.07K +3 +0.2%
Marshall Wace
16
Marshall Wace
United Kingdom
$3.97M +$3.35M +1,248 +545%
6CM
17
683 Capital Management
New York
$3.59M -$3.38M -1,258 -49%
ECM
18
Endurant Capital Management
California
$3.09M +$237K +88 +8%
Morgan Stanley
19
Morgan Stanley
New York
$3.03M +$196K +73 +7%
VC
20
Voss Capital
Texas
$2.63M -$1.64M -611 -38%
CC
21
Carlson Capital
Texas
$2.39M +$895K +333 +60%
Millennium Management
22
Millennium Management
New York
$2.18M +$995K +370 +84%
BNP Paribas Financial Markets
23
BNP Paribas Financial Markets
France
$2.04M – – –
PM
24
Precept Management
Texas
$1.98M -$656K -244 -25%
SPC
25
Sigma Planning Corp
Michigan
$1.95M +$215K +80 +12%
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