YMAB

Y-mAbs Therapeutics
YMAB

Delisted

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

45 hedge funds and large institutions have $222M invested in Y-mAbs Therapeutics in 2019 Q1 according to their latest regulatory filings, with 7 funds opening new positions, 13 increasing their positions, 14 reducing their positions, and 4 closing their positions.

New
Increased
Maintained
Reduced
Closed

more first-time investments, than exits

New positions opened: | Existing positions closed:

more capital invested

Capital invested by funds: $ → $

more funds holding

Funds holding:

more funds holding in top 10

Funds holding in top 10:

0.6% less ownership

Funds ownership: 25.41%24.8% (-0.6%)

7% less repeat investments, than reductions

Existing positions increased: 13 | Existing positions reduced: 14

Holders
45
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
1
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
Puts
Net Calls
Net Calls Change

Top Buyers

1 +$13.6M
2 +$6.57M
3 +$2.82M
4
BlackRock
BlackRock
New York
+$716K
5
Vanguard Group
Vanguard Group
Pennsylvania
+$715K

Top Sellers

1 -$17.5M
2 -$6.3M
3 -$2.66M
4
AG
Artal Group
Luxembourg
-$1.02M
5
MWNA
Marshall Wace North America
New York
-$994K
Name Holding Trade Value Shares
Change
Change in
Stake
1
$55.2M
2
$42.6M
3
$24.1M
4
$18.8M
5
$17.4M
6
$16.8M
7
$9.68M
8
$7.48M
9
$7.46M
10
$5.89M
11
$2.69M
12
$2.35M
13
$2.15M
14
$2.14M
15
$1.88M
16
$937K
17
$788K
18
$598K
19
$530K
20
$426K
21
$321K
22
$286K
23
$248K
24
$228K
25
$227K