Ribbon Communications
      
      
        
          RBBN
        
        
      
    
  
          RBBN
        
        
      144 hedge funds and large institutions have $509M invested in Ribbon Communications in 2025 Q2 according to their latest regulatory filings, with 22 funds opening new positions, 59 increasing their positions, 35 reducing their positions, and 20 closing their positions.
New
  Increased
  Maintained
  Reduced
  Closed
  more repeat investments, than reductions
Existing positions increased: | Existing positions reduced:
more first-time investments, than exits
New positions opened: | Existing positions closed:
more capital invested
Capital invested by funds: $ → $
more funds holding
Funds holding: →
0.06% more ownership
Funds ownership: 72.51% → 72.57% (+0.06%)
    
      Holders
    
  
  
    
      
        
      
        144
      
    
      
    
  
    
      Holding in Top 10
    
  
  
    
      
        
      
        –
      
    
      
    
  
    
      Calls
    
  
  
    
      
        
      
        $926K
      
    
      
    
  
    
      Puts
    
  
  
    
      
        
      
        –
      
    
      
    
  
Top Buyers
| 1 | +$2.35M | |
| 2 | +$2.33M | |
| 3 | +$1.15M | |
| 4 | 
      Northern Trust
     
      
        Chicago,
      
      
        Illinois
      
     | +$770K | 
| 5 | 
      Dimensional Fund Advisors
     
      
        Austin,
      
      
        Texas
      
     | +$769K | 
Top Sellers
| 1 | -$3.06M | |
| 2 | -$1.28M | |
| 3 | -$868K | |
| 4 | 
    II
   
      Inspire Investing
     
      
        Meridian,
      
      
        Idaho
      
     | -$756K | 
| 5 | 
    BCM
   
      Bridgeway Capital Management
     
      
        Houston,
      
      
        Texas
      
     | -$698K |