YMAB

Y-mAbs Therapeutics
YMAB

Overview Fund Activity
Delisted

YMAB was delisted on the 15th of September, 2025.

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98 hedge funds and large institutions have $107M invested in Y-mAbs Therapeutics in 2023 Q3 according to their latest regulatory filings, with 9 funds opening new positions, 31 increasing their positions, 36 reducing their positions, and 6 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
98
Holders Change
+3
Holders Change %
+3.16%
% of All Funds
1.56%
Holding in Top 10
1
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.02%
New
9
Increased
31
Reduced
36
Closed
6
Calls
$16K
Puts
–
Net Calls
+$16K
Net Calls Change
-$9K

Top Buyers

1
Citadel Advisors
Citadel Advisors
Florida
+$2.09M
2
Acadian Asset Management
Acadian Asset Management
Massachusetts
+$856K
3
Dimensional Fund Advisors
Dimensional Fund Advisors
Texas
+$611K
4
GCP
GSA Capital Partners
United Kingdom
+$505K
5
D.E. Shaw & Co
D.E. Shaw & Co
New York
+$402K

Top Sellers

1
Point72 Asset Management
Point72 Asset Management
Connecticut
-$1.66M
2
CSS
Cubist Systematic Strategies
Connecticut
-$556K
3
Two Sigma Investments
Two Sigma Investments
New York
-$500K
4
AllianceBernstein
AllianceBernstein
Tennessee
-$489K
5
Nuveen Asset Management
Nuveen Asset Management
Illinois
-$362K
Name Holding Trade Value Shares
Change 		Shares
Change %
BlackRock
1
BlackRock
New York
$13.5M -$318K -58,423 -2%
Vanguard Group
2
Vanguard Group
Pennsylvania
$12.2M +$26.7K +4,899 +0.2%
SI
3
Sofinnova Investments
California
$12M – – –
PCH
4
Polar Capital Holdings
United Kingdom
$11.5M – – –
D.E. Shaw & Co
5
D.E. Shaw & Co
New York
$7.35M +$402K +73,813 +6%
Acadian Asset Management
6
Acadian Asset Management
Massachusetts
$4.42M +$856K +157,173 +24%
State Street
7
State Street
Massachusetts
$4.04M -$19.1K -3,509 -0.5%
Geode Capital Management
8
Geode Capital Management
Massachusetts
$3.87M -$4.53K -831 -0.1%
Jacobs Levy Equity Management
9
Jacobs Levy Equity Management
New Jersey
$2.89M -$186K -34,092 -6%
Citadel Advisors
10
Citadel Advisors
Florida
$2.26M +$2.09M +382,794 +1,215%
Goldman Sachs
11
Goldman Sachs
New York
$2.12M -$72.5K -13,304 -3%
Nuveen Asset Management
12
Nuveen Asset Management
Illinois
$1.95M -$362K -66,432 -16%
Millennium Management
13
Millennium Management
New York
$1.89M +$94.5K +17,347 +5%
Northern Trust
14
Northern Trust
Illinois
$1.76M -$29.1K -5,335 -2%
Los Angeles Capital Management
15
Los Angeles Capital Management
California
$1.66M +$180K +32,994 +12%
Prudential Financial
16
Prudential Financial
New Jersey
$1.56M +$196K +35,900 +14%
Charles Schwab
17
Charles Schwab
California
$1.36M -$41.7K -7,651 -3%
AQR Capital Management
18
AQR Capital Management
Connecticut
$1.34M +$251K +45,982 +23%
Dimensional Fund Advisors
19
Dimensional Fund Advisors
Texas
$1.32M +$611K +112,091 +87%
Renaissance Technologies
20
Renaissance Technologies
New York
$1.29M +$114K +20,890 +10%
Two Sigma Advisers
21
Two Sigma Advisers
New York
$1.1M -$43.6K -8,000 -4%
MSKCC
22
Memorial Sloan Kettering Cancer Center
New York
$1.04M – – –
Connor, Clark & Lunn Investment Management (CC&L)
23
Connor, Clark & Lunn Investment Management (CC&L)
British Columbia, Canada
$1M -$10.3K -1,885 -1%
SCM
24
Soleus Capital Management
Connecticut
$857K – – –
GCP
25
GSA Capital Partners
United Kingdom
$748K +$505K +92,765 +208%
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