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                    Closing price on 4/15/2016
                 
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                    | Open | 
                    17.90 | 
                 
                
                    | High | 
                    18.00 | 
                 
                
                    | Low | 
                    17.70 | 
                     
                
                    | Volume | 
                    271,900 | 
                                 
                
                    | Split-adjusted Price | 
                    16.02 | 
                 
             
            
            
                
             
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         | 
     
 
IVS Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                4/15/2016
             | 
            
                0.00 / 0.00%
             |             
            
                17.90
             |           
            
                18.00
             |               
            
                17.70
             |                           
            
                17.90
             | 
            
                17.85
             |                     
            
                16.02
             |                                 
            
                271,900
             |            
            
                 
             |                                       
         
    
        
            | 
                4/14/2016
             | 
            
                -0.10 / -0.56%
             |             
            
                18.00
             |           
            
                18.00
             |               
            
                17.50
             |                           
            
                17.90
             | 
            
                17.79
             |                     
            
                16.02
             |                                 
            
                392,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/13/2016
             | 
            
                +0.70 / +4.05%
             |             
            
                17.30
             |           
            
                18.30
             |               
            
                17.00
             |                           
            
                18.00
             | 
            
                17.31
             |                     
            
                16.11
             |                                 
            
                363,100
             |            
            
                 
             |                                       
         
    
        
            | 
                4/12/2016
             | 
            
                -0.40 / -2.26%
             |             
            
                17.70
             |           
            
                17.80
             |               
            
                17.30
             |                           
            
                17.30
             | 
            
                17.62
             |                     
            
                15.49
             |                                 
            
                311,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/11/2016
             | 
            
                -0.70 / -3.80%
             |             
            
                18.40
             |           
            
                18.60
             |               
            
                17.30
             |                           
            
                17.70
             | 
            
                18.07
             |                     
            
                15.84
             |                                 
            
                442,500
             |            
            
                 
             |                                       
         
    
        
            | 
                4/8/2016
             | 
            
                +1.10 / +6.36%
             |             
            
                17.30
             |           
            
                18.50
             |               
            
                16.80
             |                           
            
                18.40
             | 
            
                17.30
             |                     
            
                16.47
             |                                 
            
                505,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/7/2016
             | 
            
                +0.10 / +0.58%
             |             
            
                17.20
             |           
            
                17.40
             |               
            
                16.50
             |                           
            
                17.30
             | 
            
                17.06
             |                     
            
                15.49
             |                                 
            
                475,900
             |            
            
                 
             |                                       
         
    
        
            | 
                4/6/2016
             | 
            
                -0.10 / -0.58%
             |             
            
                17.30
             |           
            
                17.50
             |               
            
                17.20
             |                           
            
                17.20
             | 
            
                17.36
             |                     
            
                15.40
             |                                 
            
                468,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/5/2016
             | 
            
                +0.20 / +1.17%
             |             
            
                17.10
             |           
            
                17.30
             |               
            
                17.00
             |                           
            
                17.30
             | 
            
                17.10
             |                     
            
                15.49
             |                                 
            
                428,700
             |            
            
                 
             |                                       
         
    
        
            | 
                4/4/2016
             | 
            
                +0.40 / +2.40%
             |             
            
                16.70
             |           
            
                17.90
             |               
            
                16.70
             |                           
            
                17.10
             | 
            
                17.16
             |                     
            
                15.31
             |                                 
            
                1,133,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/1/2016
             | 
            
                +0.20 / +1.21%
             |             
            
                16.50
             |           
            
                16.80
             |               
            
                16.50
             |                           
            
                16.70
             | 
            
                16.67
             |                     
            
                14.95
             |                                 
            
                354,000
             |            
            
                 
             |                                       
         
    
        
            | 
                3/31/2016
             | 
            
                +0.40 / +2.48%
             |             
            
                16.10
             |           
            
                17.70
             |               
            
                16.10
             |                           
            
                16.50
             | 
            
                17.07
             |                     
            
                14.77
             |                                 
            
                400,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/30/2016
             | 
            
                +0.10 / +0.63%
             |             
            
                16.00
             |           
            
                16.20
             |               
            
                15.90
             |                           
            
                16.10
             | 
            
                15.98
             |                     
            
                14.41
             |                                 
            
                357,400
             |            
            
                 
             |                                       
         
    
        
            | 
                3/29/2016
             | 
            
                -0.40 / -2.44%
             |             
            
                16.40
             |           
            
                16.40
             |               
            
                16.00
             |                           
            
                16.00
             | 
            
                16.24
             |                     
            
                14.32
             |                                 
            
                386,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/28/2016
             | 
            
                0.00 / 0.00%
             |             
            
                16.40
             |           
            
                16.60
             |               
            
                16.30
             |                           
            
                16.40
             | 
            
                16.49
             |                     
            
                14.68
             |                                 
            
                408,200
             |            
            
                 
             |                                       
         
    
        
            | 
                3/25/2016
             | 
            
                -0.20 / -1.20%
             |             
            
                16.60
             |           
            
                16.80
             |               
            
                16.40
             |                           
            
                16.40
             | 
            
                16.62
             |                     
            
                14.68
             |                                 
            
                371,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/24/2016
             | 
            
                -0.20 / -1.19%
             |             
            
                16.80
             |           
            
                17.00
             |               
            
                16.60
             |                           
            
                16.60
             | 
            
                16.80
             |                     
            
                14.86
             |                                 
            
                387,100
             |            
            
                 
             |                                       
         
    
        
            | 
                3/23/2016
             | 
            
                0.00 / 0.00%
             |             
            
                16.80
             |           
            
                17.00
             |               
            
                16.70
             |                           
            
                16.80
             | 
            
                16.80
             |                     
            
                15.04
             |                                 
            
                493,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/22/2016
             | 
            
                -0.10 / -0.59%
             |             
            
                16.90
             |           
            
                17.00
             |               
            
                16.70
             |                           
            
                16.80
             | 
            
                16.77
             |                     
            
                15.04
             |                                 
            
                470,200
             |            
            
                 
             |                                       
         
    
        
            | 
                3/21/2016
             | 
            
                -0.30 / -1.74%
             |             
            
                17.20
             |           
            
                17.30
             |               
            
                16.90
             |                           
            
                16.90
             | 
            
                17.15
             |                     
            
                15.13
             |                                 
            
                532,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/18/2016
             | 
            
                -0.20 / -1.15%
             |             
            
                17.40
             |           
            
                17.50
             |               
            
                17.20
             |                           
            
                17.20
             | 
            
                17.34
             |                     
            
                15.40
             |                                 
            
                421,600
             |            
            
                 
             |                                       
         
    
        
            | 
                3/17/2016
             | 
            
                -0.10 / -0.57%
             |             
            
                17.50
             |           
            
                17.70
             |               
            
                17.40
             |                           
            
                17.40
             | 
            
                17.61
             |                     
            
                15.58
             |                                 
            
                398,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/16/2016
             | 
            
                -0.30 / -1.69%
             |             
            
                17.90
             |           
            
                18.00
             |               
            
                17.50
             |                           
            
                17.50
             | 
            
                17.85
             |                     
            
                15.66
             |                                 
            
                373,700
             |            
            
                 
             |                                       
         
    
        
            | 
                3/15/2016
             | 
            
                -0.60 / -3.26%
             |             
            
                18.40
             |           
            
                18.50
             |               
            
                17.80
             |                           
            
                17.80
             | 
            
                18.30
             |                     
            
                15.93
             |                                 
            
                495,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/14/2016
             | 
            
                0.00 / 0.00%
             |             
            
                18.40
             |           
            
                20.20
             |               
            
                18.40
             |                           
            
                18.40
             | 
            
                19.02
             |                     
            
                16.47
             |                                 
            
                413,300
             |            
            
                 
             |                                       
         
    
        
            | 
                3/11/2016
             | 
            
                0.00 / 0.00%
             |             
            
                18.30
             |           
            
                18.70
             |               
            
                18.30
             |                           
            
                18.40
             | 
            
                18.48
             |                     
            
                16.47
             |                                 
            
                410,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/10/2016
             | 
            
                +0.30 / +1.66%
             |             
            
                18.10
             |           
            
                19.20
             |               
            
                17.90
             |                           
            
                18.40
             | 
            
                18.10
             |                     
            
                16.47
             |                                 
            
                320,600
             |            
            
                 
             |                                       
         
    
        
            | 
                3/9/2016
             | 
            
                +0.20 / +1.12%
             |             
            
                17.90
             |           
            
                18.30
             |               
            
                17.50
             |                           
            
                18.10
             | 
            
                17.90
             |                     
            
                16.20
             |                                 
            
                362,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/8/2016
             | 
            
                -0.30 / -1.65%
             |             
            
                18.20
             |           
            
                18.30
             |               
            
                17.80
             |                           
            
                17.90
             | 
            
                18.02
             |                     
            
                16.02
             |                                 
            
                327,700
             |            
            
                 
             |                                       
         
    
        
            | 
                3/7/2016
             | 
            
                0.00 / 0.00%
             |             
            
                18.20
             |           
            
                18.20
             |               
            
                17.90
             |                           
            
                18.20
             | 
            
                18.09
             |                     
            
                16.29
             |                                 
            
                365,100
             |  
            
                 
             |                                                              
             
    
         
    
    
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 Market Update 
        
            
                Last updated at 3:10:02 PM
                                                                
            
            
            
            
        
        
     
 
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