| 
    
        
            | 
                    Closing price on 1/21/2016
                 |  |  
    
        |           
                
                    | Open | 16.90 |  
                    | High | 16.90 |  
                    | Low | 16.70 |  
                    | Volume | 813,400 |  
                    | Split-adjusted Price | 14.95 |  
                
             | 
 |  IVS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 1/21/2016 | -0.20 / -1.18% | 16.90 | 16.90 | 16.70 | 16.70 | 16.82 | 14.95 | 813,400 |   |  
            | 1/20/2016 | -0.10 / -0.59% | 17.00 | 17.00 | 16.80 | 16.90 | 17.00 | 15.13 | 254,900 |   |  			
            | 1/19/2016 | +0.50 / +3.03% | 16.50 | 17.00 | 16.50 | 17.00 | 16.71 | 15.22 | 581,300 |   |  
            | 1/18/2016 | -0.30 / -1.79% | 16.80 | 16.80 | 16.30 | 16.50 | 16.53 | 14.77 | 276,100 |   |  			
            | 1/15/2016 | +0.10 / +0.60% | 16.70 | 16.90 | 16.60 | 16.80 | 16.73 | 15.04 | 243,100 |   |  
            | 1/14/2016 | -0.30 / -1.76% | 17.00 | 17.00 | 16.70 | 16.70 | 16.78 | 14.95 | 428,000 |   |  			
            | 1/13/2016 | -0.20 / -1.16% | 17.20 | 17.40 | 17.00 | 17.00 | 17.23 | 15.22 | 419,100 |   |  
            | 1/12/2016 | +0.10 / +0.58% | 17.10 | 17.40 | 17.00 | 17.20 | 17.14 | 15.40 | 479,400 |   |  			
            | 1/11/2016 | +0.10 / +0.59% | 17.00 | 17.30 | 17.00 | 17.10 | 17.19 | 15.31 | 527,300 |   |  
            | 1/8/2016 | +0.20 / +1.19% | 16.80 | 17.00 | 16.70 | 17.00 | 16.80 | 15.22 | 598,500 |   |  			
            | 1/7/2016 | -0.20 / -1.18% | 17.00 | 17.00 | 16.70 | 16.80 | 16.88 | 15.04 | 374,300 |   |  
            | 1/6/2016 | +0.20 / +1.19% | 16.80 | 17.00 | 16.70 | 17.00 | 16.95 | 15.22 | 296,700 |   |  			
            | 1/5/2016 | -0.30 / -1.75% | 17.10 | 17.10 | 16.80 | 16.80 | 17.10 | 15.04 | 270,400 |   |  
            | 1/4/2016 | 0.00 / 0.00% | 17.10 | 17.20 | 16.90 | 17.10 | 17.05 | 15.31 | 362,800 |   |  			
            | 12/31/2015 | 0.00 / 0.00% | 17.10 | 17.10 | 17.00 | 17.10 | 17.10 | 15.31 | 313,300 |   |  
            | 12/30/2015 | 0.00 / 0.00% | 17.10 | 17.20 | 17.10 | 17.10 | 17.19 | 15.31 | 347,100 |   |  			
            | 12/29/2015 | 0.00 / 0.00% | 17.00 | 17.20 | 17.00 | 17.10 | 17.11 | 15.31 | 299,700 |   |  
            | 12/28/2015 | 0.00 / 0.00% | 17.10 | 17.60 | 17.00 | 17.10 | 17.08 | 15.31 | 568,700 |   |  			
            | 12/25/2015 | -0.10 / -0.58% | 17.20 | 17.40 | 17.10 | 17.10 | 17.26 | 15.31 | 464,500 |   |  
            | 12/24/2015 | 0.00 / 0.00% | 17.20 | 17.50 | 17.20 | 17.20 | 17.35 | 15.40 | 317,500 |   |  			
            | 12/23/2015 | -0.10 / -0.58% | 17.30 | 17.30 | 17.10 | 17.20 | 17.20 | 15.40 | 135,500 |   |  
            | 12/22/2015 | 0.00 / 0.00% | 17.30 | 17.40 | 17.20 | 17.30 | 17.33 | 15.49 | 133,900 |   |  			
            | 12/21/2015 | -0.10 / -0.57% | 17.40 | 17.50 | 17.20 | 17.30 | 17.39 | 15.49 | 116,800 |   |  
            | 12/18/2015 | -0.20 / -1.14% | 17.60 | 17.60 | 17.30 | 17.40 | 17.46 | 15.58 | 442,700 |   |  			
            | 12/17/2015 | 0.00 / 0.00% | 17.60 | 17.70 | 17.50 | 17.60 | 17.60 | 15.75 | 185,200 |   |  
            | 12/16/2015 | +0.20 / +1.15% | 17.40 | 17.60 | 17.40 | 17.60 | 17.56 | 15.75 | 869,200 |   |  			
            | 12/15/2015 | +0.30 / +1.75% | 17.10 | 17.40 | 17.10 | 17.40 | 17.21 | 15.58 | 168,000 |   |  
            | 12/14/2015 | 0.00 / 0.00% | 17.10 | 17.20 | 16.90 | 17.10 | 17.06 | 15.31 | 151,700 |   |  			
            | 12/11/2015 | +0.10 / +0.59% | 17.00 | 17.10 | 16.90 | 17.10 | 16.97 | 15.31 | 141,900 |   |  
            | 12/10/2015 | -0.10 / -0.58% | 17.00 | 17.10 | 16.80 | 17.00 | 17.02 | 15.22 | 130,900 |   |  |