YMAB

Y-mAbs Therapeutics
YMAB

Delisted

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

102 hedge funds and large institutions have $128M invested in Y-mAbs Therapeutics in 2025 Q1 according to their latest regulatory filings, with 16 funds opening new positions, 40 increasing their positions, 28 reducing their positions, and 26 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

Call options by funds: $ | Put options by funds: $

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

less ownership

Funds ownership:

less funds holding

Funds holding:

38% less first-time investments, than exits

New positions opened: 16 | Existing positions closed: 26

43% less capital invested

Capital invested by funds: $225M → $128M (-$97.9M)

50% less funds holding in top 10

Funds holding in top 10: 21 (-1)

Holders
102
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
$171K
Puts
$9K
Net Calls
Net Calls Change

Top Buyers

1 +$2.55M
2 +$1.91M
3 +$1.65M
4
Morgan Stanley
Morgan Stanley
New York
+$795K
5
Bank of America
Bank of America
North Carolina
+$687K
Name Holding Trade Value Shares
Change
Change in
Stake
26
$689K
27
$689K
28
$686K
29
$682K
30
$680K
31
$635K
32
$581K
33
$569K
34
$498K
35
$459K
36
$423K
37
$410K
38
$406K
39
$405K
40
$269K
41
$244K
42
$243K
43
$239K
44
$207K
45
$194K
46
$192K
47
$172K
48
$169K
49
$163K
50
$148K