YMAB
  
  
      
        Y-mAbs Therapeutics
      
      
        
          YMAB
        
        
      
    
  
          YMAB
        
        
      Delisted
    YMAB was delisted on the 15th of September, 2025.
100 hedge funds and large institutions have $866M invested in Y-mAbs Therapeutics in 2021 Q2 according to their latest regulatory filings, with 13 funds opening new positions, 45 increasing their positions, 22 reducing their positions, and 30 closing their positions.
New
  Increased
  Maintained
  Reduced
  Closed
  more repeat investments, than reductions
Existing positions increased: | Existing positions reduced:
more capital invested
Capital invested by funds: $ → $
more funds holding in top 10
Funds holding in top 10: →
less ownership
Funds ownership: →
15% less funds holding
Funds holding: 117 → 100 (-17)
57% less first-time investments, than exits
New positions opened: 13 | Existing positions closed: 30
    
      Holders
    
  
  
    
      
        
      
        100
      
    
      
    
  
    
      Holding in Top 10
    
  
  
    
      
        
      
        2
      
    
      
    
  
    
      Calls
    
  
  
    
      
        
      
        –
      
    
      
    
  
    
      Puts
    
  
  
    
      
        
      
        –
      
    
      
    
  
Top Buyers
| 1 | +$48.3M | |
| 2 | +$6.05M | |
| 3 | +$4.88M | |
| 4 | 
          
   
    LOAMS
   
  
      Lombard Odier Asset Management (Switzerland)
     
    
      
        Petit-Lancy,
      
      
        Switzerland
      
     
   | 
        +$4.68M | 
| 5 | 
          
   
      AllianceBernstein
     
    
      
        Nashville,
      
      
        Tennessee
      
     
   | 
        +$3.96M | 
Top Sellers
| 1 | -$23.6M | |
| 2 | -$14.5M | |
| 3 | -$10.8M | |
| 4 | 
          
   
    DCM
   
  
      Driehaus Capital Management
     
    
      
        Chicago,
      
      
        Illinois
      
     
   | 
        -$10.7M | 
| 5 | 
          
   
      Millennium Management
     
    
      
      
        New York
      
     
   | 
        -$8.62M |