YMAB

Y-mAbs Therapeutics
YMAB

Delisted

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

117 hedge funds and large institutions have $804M invested in Y-mAbs Therapeutics in 2021 Q1 according to their latest regulatory filings, with 18 funds opening new positions, 55 increasing their positions, 32 reducing their positions, and 14 closing their positions.

New
Increased
Maintained
Reduced
Closed

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

more first-time investments, than exits

New positions opened: | Existing positions closed:

more ownership

Funds ownership:

more funds holding

Funds holding:

28% less capital invested

Capital invested by funds: $1.11B → $804M (-$308M)

50% less funds holding in top 10

Funds holding in top 10: 42 (-2)

100% less call options, than puts

Call options by funds: $0 | Put options by funds: $496K

Holders
117
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
2
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
Puts
$496K
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
101
$83K
102
$80K
103
$55K
104
$46K
105
$43K
106
$30K
107
$29K
108
$27K
109
$14K
110
$11K
111
$7K
112
$5K
113
$3K
114
$2K
115
$1K
116
$538
117
$41
118
119
120
121
122
123
124
125