Y-Mabs TherapeuticsYMAB

13F holders, Q3 2025 (September 30)
2holders −95
0new positions
95sold out
$4.78avg. 13F price*

At the end of Q3 2025, 2 institutions reported holding Y-Mabs Therapeutics Inc. (YMAB) in their 13F filings, down 95 from Q2 2025. 0 opened new positions and 95 sold out. The largest holders were Brooklyn Investment Group ($75K) and IFP Advisors, Inc ($3K).

Company
Y-Mabs Therapeutics Inc.
CUSIP
984241109
Latest filing quarter
Q3 2025

History

Number of 13F holders

050100150 Q1 2024: 96Q1 2024Q2 2024: 96Q2 2024Q3 2024: 105Q3 2024Q4 2024: 112Q4 2024Q1 2025: 102Q1 2025Q2 2025: 97Q2 2025Q3 2025: 2Q3 2025

Total Exit/New Position Q2 2025 → Q3 2025

InstitutionsTotal Value
New Positions0$0
Exits95$125.8M

All 13F filers, Q2 2025 → Q3 2025: 11,110 shares bought and 27,899,565 shares sold, net −27,888,455 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.

Ownership 2 holders

Brooklyn Investment Group 0.01% Add +224.4% 16,061 $75K
IFP Advisors, Inc 0.00% Reduce -0.6% 332 $3K

"% of holder's portfolio" is YMAB's weight in each manager's 13F, not the share of Y-Mabs Therapeutics Inc. the manager owns.