BLUE
  
  
      
        bluebird bio
      
      
        
          BLUE
        
        
      
    
  
          BLUE
        
        
      Delisted
    BLUE was delisted on the 30th of May, 2025.
288 hedge funds and large institutions have $8.48B invested in bluebird bio in 2018 Q3 according to their latest regulatory filings, with 37 funds opening new positions, 108 increasing their positions, 99 reducing their positions, and 54 closing their positions.
New
  Increased
  Maintained
  Reduced
  Closed
  more call options, than puts
Call options by funds: $ | Put options by funds: $
more repeat investments, than reductions
Existing positions increased: | Existing positions reduced:
more capital invested
Capital invested by funds: $ → $
more ownership
Funds ownership: →
6% less funds holding
Funds holding: 307 → 288 (-19)
31% less first-time investments, than exits
New positions opened: 37 | Existing positions closed: 54
50% less funds holding in top 10
Funds holding in top 10: 4 → 2 (-2)
    
      Holders
    
  
  
    
      
        
      
        288
      
    
      
    
  
    
      Holding in Top 10
    
  
  
    
      
        
      
        2
      
    
      
    
  
    
      Calls
    
  
  
    
      
        
      
        $177M
      
    
      
    
  
    
      Puts
    
  
  
    
      
        
      
        $151M
      
    
      
    
  
Top Buyers
| 1 | +$311M | |
| 2 | +$207M | |
| 3 | +$136M | |
| 4 |   
      Fidelity Investments
     
      
        Boston,
      
      
        Massachusetts
      
     | +$88.4M | 
| 5 | 
      Capital Research Global Investors
     
      
        Los Angeles,
      
      
        California
      
     | +$72.2M | 
Top Sellers
| 1 | -$54M | |
| 2 | -$53.8M | |
| 3 | -$29.2M | |
| 4 | 
    MWNA
   
      Marshall Wace North America
     
      
      
        New York
      
     | -$29M | 
| 5 | 
      Citigroup
     
      
      
        New York
      
     | -$26M |