| 
    
        
            | 
                    Closing price on 6/23/2016
                 |  |  
    
        |           
                
                    | Open | 17.80 |  
                    | High | 18.70 |  
                    | Low | 17.80 |  
                    | Volume | 245,700 |  
                    | Split-adjusted Price | 16.86 |  
                
             | 
 |  IVS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 6/23/2016 | +0.70 / +3.93% | 17.80 | 18.70 | 17.80 | 18.50 | 18.21 | 16.86 | 245,700 |   |  
            | 6/22/2016 | 0.00 / 0.00% | 17.80 | 17.80 | 17.70 | 17.80 | 17.72 | 16.22 | 217,300 |   |  			
            | 6/21/2016 | -0.10 / -0.56% | 17.90 | 17.90 | 17.70 | 17.80 | 17.79 | 16.22 | 200,800 |   |  
            | 6/20/2016 | 0.00 / 0.00% | 17.90 | 18.00 | 17.50 | 17.90 | 17.75 | 16.31 | 291,600 |   |  			
            | 6/17/2016 | 0.00 / 0.00% | 17.90 | 17.90 | 17.70 | 17.90 | 17.82 | 16.31 | 276,400 |   |  
            | 6/16/2016 | 0.00 / 0.00% | 17.90 | 17.90 | 17.80 | 17.90 | 17.84 | 16.31 | 295,900 |   |  			
            | 6/15/2016 | 0.00 / 0.00% | 17.90 | 17.90 | 17.70 | 17.90 | 17.82 | 16.31 | 246,300 |   |  
            | 6/14/2016 | 0.00 / 0.00% | 17.90 | 17.90 | 17.80 | 17.90 | 17.88 | 16.31 | 291,700 |   |  			
            | 6/13/2016 | 0.00 / 0.00% | 17.90 | 17.90 | 17.70 | 17.90 | 17.84 | 16.31 | 290,300 |   |  
            | 6/10/2016 | 0.00 / 0.00% | 17.90 | 18.00 | 17.80 | 17.90 | 17.88 | 16.31 | 234,700 |   |  			
            | 6/9/2016 | 0.00 / 0.00% | 17.90 | 17.90 | 17.80 | 17.90 | 17.84 | 16.31 | 222,900 |   |  
            | 6/8/2016 | 0.00 / 0.00% | 17.90 | 18.00 | 17.90 | 17.90 | 17.91 | 16.31 | 183,600 |   |  			
            | 6/7/2016 | +0.10 / +0.56% | 17.80 | 17.90 | 17.80 | 17.90 | 17.83 | 16.31 | 240,600 |   |  
            | 6/6/2016 | 0.00 / 0.00% | 17.80 | 17.90 | 17.70 | 17.80 | 17.81 | 16.22 | 193,400 |   |  			
            | 6/3/2016 | -0.20 / -1.11% | 18.00 | 18.00 | 17.80 | 17.80 | 17.95 | 16.22 | 201,800 |   |  
            | 6/2/2016 | +0.10 / +0.56% | 17.90 | 18.00 | 17.80 | 18.00 | 17.88 | 16.40 | 204,900 |   |  			
            | 6/1/2016 | 0.00 / 0.00% | 17.90 | 18.00 | 17.80 | 17.90 | 17.91 | 16.31 | 195,400 |   |  
            | 5/31/2016 | +0.10 / +0.56% | 17.80 | 18.00 | 17.80 | 17.90 | 17.87 | 16.31 | 210,000 |   |  			
            | 5/30/2016 | +0.10 / +0.56% | 17.70 | 17.90 | 17.60 | 17.80 | 17.77 | 16.22 | 202,900 |   |  
            | 5/27/2016 | 0.00 / 0.00% | 17.70 | 17.80 | 17.60 | 17.70 | 17.72 | 16.13 | 205,400 |   |  			
            | 5/26/2016 | 0.00 / 0.00% | 17.70 | 17.80 | 17.50 | 17.70 | 17.70 | 16.13 | 199,800 |   |  
            | 5/25/2016 | 0.00 / 0.00% | 17.70 | 17.90 | 17.70 | 17.70 | 17.78 | 16.13 | 213,400 |   |  			
            | 5/24/2016 | 0.00 / 0.00% | 17.70 | 17.80 | 17.60 | 17.70 | 17.70 | 16.13 | 224,800 |   |  
            | 5/23/2016 | 0.00 / 0.00% | 17.70 | 17.80 | 17.50 | 17.70 | 17.66 | 16.13 | 213,600 |   |  			
            | 5/20/2016 | +0.10 / +0.57% | 17.60 | 17.70 | 17.50 | 17.70 | 17.62 | 16.13 | 225,700 |   |  
            | 5/19/2016 | -0.20 / -1.12% | 17.80 | 17.90 | 17.60 | 17.60 | 17.80 | 16.04 | 279,900 |   |  			
            | 5/18/2016 | 0.00 / 0.00% | 17.80 | 17.90 | 17.80 | 17.80 | 17.82 | 16.22 | 270,400 |   |  
            | 5/17/2016 | 0.00 / 0.00% | 17.80 | 17.90 | 17.70 | 17.80 | 17.80 | 16.22 | 245,300 |   |  			
            | 5/16/2016 | 0.00 / 0.00% | 17.80 | 17.80 | 17.60 | 17.80 | 17.70 | 16.22 | 201,800 |   |  
            | 5/13/2016 | 0.00 / 0.00% | 17.80 | 17.90 | 17.70 | 17.80 | 17.81 | 16.22 | 178,500 |   |  |