| 
    
        
            | 
                    Closing price on 8/25/2015
                 |  |  
    
        |           
                
                    | Open | 16.20 |  
                    | High | 16.70 |  
                    | Low | 16.20 |  
                    | Volume | 295,900 |  
                    | Split-adjusted Price | 14.95 |  
                
             | 
 |  IVS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 8/25/2015 | +0.40 / +2.45% | 16.20 | 16.70 | 16.20 | 16.70 | 16.39 | 14.95 | 295,900 |   |  
            | 8/24/2015 | -0.30 / -1.81% | 16.60 | 16.60 | 15.10 | 16.30 | 16.06 | 14.59 | 245,500 |   |  			
            | 8/21/2015 | -0.20 / -1.19% | 16.80 | 16.80 | 16.60 | 16.60 | 16.62 | 14.86 | 192,200 |   |  
            | 8/20/2015 | 0.00 / 0.00% | 16.80 | 16.80 | 16.60 | 16.80 | 16.71 | 15.04 | 212,300 |   |  			
            | 8/19/2015 | +0.10 / +0.60% | 16.70 | 16.80 | 16.50 | 16.80 | 16.66 | 15.04 | 221,200 |   |  
            | 8/18/2015 | +0.20 / +1.21% | 16.50 | 16.70 | 16.40 | 16.70 | 16.59 | 14.95 | 199,300 |   |  			
            | 8/17/2015 | -0.10 / -0.60% | 16.60 | 16.80 | 16.50 | 16.50 | 16.58 | 14.77 | 229,700 |   |  
            | 8/14/2015 | -0.10 / -0.60% | 16.70 | 17.00 | 16.40 | 16.60 | 16.68 | 14.86 | 195,100 |   |  			
            | 8/13/2015 | -0.20 / -1.18% | 16.90 | 16.90 | 16.40 | 16.70 | 16.64 | 14.95 | 670,700 |   |  
            | 8/12/2015 | -0.50 / -2.87% | 17.10 | 17.30 | 16.50 | 16.90 | 16.95 | 15.13 | 619,600 |   |  			
            | 8/11/2015 | 0.00 / 0.00% | 17.40 | 17.50 | 17.20 | 17.40 | 17.40 | 15.58 | 177,200 |   |  
            | 8/10/2015 | +0.10 / +0.58% | 17.30 | 17.60 | 17.20 | 17.40 | 17.37 | 15.58 | 183,100 |   |  			
            | 8/7/2015 | 0.00 / 0.00% | 17.30 | 17.50 | 17.10 | 17.30 | 17.29 | 15.49 | 171,700 |   |  
            | 8/6/2015 | -0.20 / -1.14% | 17.50 | 17.60 | 17.20 | 17.30 | 17.41 | 15.49 | 173,100 |   |  			
            | 8/5/2015 | +0.40 / +2.34% | 17.10 | 17.50 | 17.10 | 17.50 | 17.23 | 15.66 | 236,400 |   |  
            | 8/4/2015 | +0.20 / +1.18% | 16.90 | 17.10 | 16.70 | 17.10 | 16.90 | 15.31 | 224,200 |   |  			
            | 8/3/2015 | 0.00 / 0.00% | 16.80 | 16.90 | 16.50 | 16.90 | 16.72 | 15.13 | 201,500 |   |  
            | 7/31/2015 | 0.00 / 0.00% | 16.90 | 17.00 | 16.60 | 16.90 | 16.85 | 15.13 | 224,900 |   |  			
            | 7/30/2015 | 0.00 / 0.00% | 17.00 | 17.10 | 16.80 | 16.90 | 16.96 | 15.13 | 235,700 |   |  
            | 7/29/2015 | 0.00 / 0.00% | 16.90 | 16.90 | 16.70 | 16.90 | 16.81 | 15.13 | 164,400 |   |  			
            | 7/28/2015 | -0.10 / -0.59% | 17.00 | 17.10 | 16.60 | 16.90 | 17.00 | 15.13 | 218,400 |   |  
            | 7/27/2015 | 0.00 / 0.00% | 17.00 | 17.30 | 16.60 | 17.00 | 16.96 | 15.22 | 214,700 |   |  			
            | 7/24/2015 | +0.10 / +0.59% | 16.80 | 17.00 | 16.70 | 17.00 | 16.93 | 15.22 | 239,200 |   |  
            | 7/23/2015 | 0.00 / 0.00% | 16.90 | 17.00 | 16.50 | 16.90 | 16.80 | 15.13 | 568,200 |   |  			
            | 7/22/2015 | +0.30 / +1.81% | 16.60 | 17.00 | 16.40 | 16.90 | 16.78 | 15.13 | 264,900 |   |  
            | 7/21/2015 | 0.00 / 0.00% | 16.60 | 17.00 | 16.30 | 16.60 | 16.60 | 14.86 | 283,200 |   |  			
            | 7/20/2015 | -0.10 / -0.60% | 16.70 | 16.70 | 16.10 | 16.60 | 16.40 | 14.86 | 177,300 |   |  
            | 7/17/2015 | +0.10 / +0.60% | 16.50 | 16.90 | 16.30 | 16.70 | 16.65 | 14.95 | 227,500 |   |  			
            | 7/16/2015 | 0.00 / 0.00% | 16.60 | 17.00 | 16.30 | 16.60 | 16.60 | 14.86 | 249,000 |   |  
            | 7/15/2015 | -0.40 / -2.35% | 17.00 | 17.20 | 16.50 | 16.60 | 16.79 | 14.86 | 649,000 |   |  |