YMAB
  
  
      
        Y-mAbs Therapeutics
      
      
        
          YMAB
        
        
      
    
  
          YMAB
        
        
      Delisted
    YMAB was delisted on the 15th of September, 2025.
97 hedge funds and large institutions have $716M invested in Y-mAbs Therapeutics in 2021 Q3 according to their latest regulatory filings, with 10 funds opening new positions, 41 increasing their positions, 29 reducing their positions, and 13 closing their positions.
New
  Increased
  Maintained
  Reduced
  Closed
  more repeat investments, than reductions
Existing positions increased: | Existing positions reduced:
more ownership
Funds ownership: →
more funds holding in top 10
Funds holding in top 10: →
less funds holding
Funds holding: →
17% less capital invested
Capital invested by funds: $866M → $716M (-$150M)
23% less first-time investments, than exits
New positions opened: 10 | Existing positions closed: 13
100% less call options, than puts
Call options by funds: $0 | Put options by funds: $665K
    
      Holders
    
  
  
    
      
        
      
        97
      
    
      
    
  
    
      Holding in Top 10
    
  
  
    
      
        
      
        2
      
    
      
    
  
    
      Calls
    
  
  
    
      
        
      
        –
      
    
      
    
  
    
      Puts
    
  
  
    
      
        
      
        $665K
      
    
      
    
  
Top Buyers
| 1 | +$10.6M | |
| 2 | +$4.81M | |
| 3 | +$3.58M | |
| 4 | 
          
   
    SCM
   
  
      Soleus Capital Management
     
    
      
        Greenwich,
      
      
        Connecticut
      
     
   | 
        +$3.46M | 
| 5 | 
          
   
    MB
   
  
      MPM BioImpact
     
    
      
        Boston,
      
      
        Massachusetts
      
     
   | 
        +$3.3M | 
Top Sellers
| 1 | -$10.6M | |
| 2 | -$8.56M | |
| 3 | -$6.69M | |
| 4 | 
          
   
      Wellington Management Group
     
    
      
        Boston,
      
      
        Massachusetts
      
     
   | 
        -$4.87M | 
| 5 | 
          
   
    ACM
   
  
      Ashford Capital Management
     
    
      
        Wilmington,
      
      
        Delaware
      
     
   | 
        -$3.75M |