YMAB
  
  
      
        Y-mAbs Therapeutics
      
      
        
          YMAB
        
        
      
    
  
          YMAB
        
        
      Delisted
    YMAB was delisted on the 15th of September, 2025.
80 hedge funds and large institutions have $523M invested in Y-mAbs Therapeutics in 2020 Q1 according to their latest regulatory filings, with 9 funds opening new positions, 31 increasing their positions, 30 reducing their positions, and 10 closing their positions.
New
  Increased
  Maintained
  Reduced
  Closed
  more ownership
Funds ownership: →
more repeat investments, than reductions
Existing positions increased: | Existing positions reduced:
more funds holding in top 10
Funds holding in top 10: →
less funds holding
Funds holding: →
10% less first-time investments, than exits
New positions opened: 9 | Existing positions closed: 10
14% less capital invested
Capital invested by funds: $606M → $523M (-$83.8M)
    
      Holders
    
  
  
    
      
        
      
        80
      
    
      
    
  
    
      Holding in Top 10
    
  
  
    
      
        
      
        3
      
    
      
    
  
    
      Calls
    
  
  
    
      
        
      
        –
      
    
      
    
  
    
      Puts
    
  
  
    
      
        
      
        –
      
    
      
    
  
Top Buyers
| 1 | +$14.3M | |
| 2 | +$7.51M | |
| 3 | +$4.22M | |
| 4 | 
          
   
    PC
   
  
      Polar Capital
     
    
      
        London,
      
      
        United Kingdom
      
     
   | 
        +$3.55M | 
| 5 | 
          
   
      Aviva
     
    
      
        London,
      
      
        United Kingdom
      
     
   | 
        +$3.46M | 
Top Sellers
| 1 | -$6.39M | |
| 2 | -$6.31M | |
| 3 | -$4.33M | |
| 4 | 
          
   
    PI
   
  
      Putnam Investments
     
    
      
        Boston,
      
      
        Massachusetts
      
     
   | 
        -$3.54M | 
| 5 | 
          
   
      Deutsche Bank
     
    
      
        Frankfurt Am Main Ge,
      
      
        Germany
      
     
   | 
        -$2.78M |