YMAB icon

Y-mAbs Therapeutics
YMAB

Overview Fund Activity

96 hedge funds and large institutions have $126M invested in Y-mAbs Therapeutics in 2025 Q2 according to their latest regulatory filings, with 13 funds opening new positions, 28 increasing their positions, 36 reducing their positions, and 19 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
96
Holders Change
-6
Holders Change %
-5.88%
% of All Funds
1.29%
Holding in Top 10
1
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.01%
New
13
Increased
28
Reduced
36
Closed
19
Calls
$151K
Puts
$2K
Net Calls
+$149K
Net Calls Change
-$13K

Top Buyers

1
NCM
1
Nantahala Capital Management
Connecticut
$1.59M
2
ACA
2
Acorn Capital Advisors
New York
$15.4M
3
GCP
3
GSA Capital Partners
United Kingdom
$839K
4
SCM
4
Stonepine Capital Management
Oregon
$1.29M
5
UBS Group
5
UBS Group
Switzerland
$1.03M

Top Sellers

1
Pictet Asset Management
1
Pictet Asset Management
Switzerland
$0
2
Millennium Management
2
Millennium Management
New York
$631K
3
Morgan Stanley
3
Morgan Stanley
New York
$1.32M
4
Wellington Management Group
4
Wellington Management Group
Massachusetts
$0
5
BlackRock
5
BlackRock
New York
$12.4M
Name Holding Trade Value Shares
Change 		Shares
Change %
ETC
101
Exchange Traded Concepts
Oklahoma
– -$119K -26,762 Closed
Man Group
102
Man Group
United Kingdom
– -$115K -26,004 Closed
Principal Financial Group
103
Principal Financial Group
Iowa
– -$99.4K -22,434 Closed
CF
104
Corebridge Financial
Texas
– -$81.1K -18,305 Closed
BCM
105
Bayesian Capital Management
New York
– -$63.7K -14,382 Closed
AI
106
Atom Investors
Texas
– -$62.6K -14,141 Closed
SG Americas Securities
107
SG Americas Securities
New York
– -$59K -13,284 Closed
EC
108
EntryPoint Capital
New York
– -$56.1K -12,654 Closed
CC
109
Corton Capital
Ontario, Canada
– -$55.1K -12,432 Closed
Connor, Clark & Lunn Investment Management (CC&L)
110
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
– -$49.1K -11,084 Closed
ProShare Advisors
111
ProShare Advisors
Maryland
– -$44.8K -10,109 Closed
Lazard Asset Management
112
Lazard Asset Management
New York
– -$21K -4,812 Closed
Simplex Trading
113
Simplex Trading
Illinois
– -$1K -437 Closed
SC
114
SouthState Corp
Florida
– -$302 -68 Closed
CA
115
CoreCap Advisors
Michigan
– -$204 -46 Closed
1 2 3 4
5