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                    Closing price on 5/9/2018
                 
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                    | Open | 
                    85.30 | 
                 
                
                    | High | 
                    98.00 | 
                 
                
                    | Low | 
                    84.00 | 
                     
                
                    | Volume | 
                    21,700 | 
                                 
                
                    | Split-adjusted Price | 
                    43.16 | 
                 
             
            
            
                
             
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DSC Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                5/9/2018
             | 
            
                +17.00 / +20.99%
             |             
            
                85.30
             |           
            
                98.00
             |               
            
                84.00
             |                           
            
                98.00
             | 
            
                93.92
             |                     
            
                43.16
             |                                 
            
                21,700
             |            
            
                 
             |                                       
         
    
        
            | 
                5/8/2018
             | 
            
                -4.90 / -5.70%
             |             
            
                85.50
             |           
            
                86.00
             |               
            
                79.00
             |                           
            
                81.00
             | 
            
                85.26
             |                     
            
                35.67
             |                                 
            
                13,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/7/2018
             | 
            
                -4.60 / -5.08%
             |             
            
                95.00
             |           
            
                95.00
             |               
            
                81.00
             |                           
            
                85.90
             | 
            
                85.18
             |                     
            
                37.83
             |                                 
            
                16,300
             |            
            
                 
             |                                       
         
    
        
            | 
                5/4/2018
             | 
            
                +2.50 / +3.01%
             |             
            
                95.50
             |           
            
                95.50
             |               
            
                85.50
             |                           
            
                85.50
             | 
            
                90.50
             |                     
            
                37.65
             |                                 
            
                200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                5/3/2018
             | 
            
                -1.50 / -1.78%
             |             
            
                84.50
             |           
            
                84.50
             |               
            
                83.00
             |                           
            
                83.00
             | 
            
                84.20
             |                     
            
                36.55
             |                                 
            
                2,500
             |            
            
                 
             |                                       
         
    
        
            | 
                5/2/2018
             | 
            
                +6.10 / +7.78%
             |             
            
                82.50
             |           
            
                84.50
             |               
            
                82.50
             |                           
            
                84.50
             | 
            
                84.07
             |                     
            
                37.21
             |                                 
            
                2,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/27/2018
             | 
            
                +11.00 / +14.47%
             |             
            
                77.00
             |           
            
                87.00
             |               
            
                77.00
             |                           
            
                87.00
             | 
            
                78.45
             |                     
            
                38.31
             |                                 
            
                58,500
             |            
            
                 
             |                                       
         
    
        
            | 
                4/26/2018
             | 
            
                +1.00 / +1.33%
             |             
            
                75.00
             |           
            
                76.10
             |               
            
                75.00
             |                           
            
                76.00
             | 
            
                75.79
             |                     
            
                33.47
             |                                 
            
                108,300
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/24/2018
             | 
            
                +1.50 / +2.04%
             |             
            
                74.90
             |           
            
                75.10
             |               
            
                73.00
             |                           
            
                75.10
             | 
            
                75.00
             |                     
            
                33.07
             |                                 
            
                34,400
             |            
            
                 
             |                                       
         
    
        
            | 
                4/23/2018
             | 
            
                -1.60 / -2.13%
             |             
            
                75.20
             |           
            
                75.70
             |               
            
                73.00
             |                           
            
                73.60
             | 
            
                75.21
             |                     
            
                32.41
             |                                 
            
                30,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/20/2018
             | 
            
                +0.60 / +0.80%
             |             
            
                73.00
             |           
            
                75.50
             |               
            
                73.00
             |                           
            
                75.50
             | 
            
                75.22
             |                     
            
                33.25
             |                                 
            
                10,100
             |            
            
                 
             |                                       
         
    
        
            | 
                4/19/2018
             | 
            
                -2.50 / -3.23%
             |             
            
                75.00
             |           
            
                75.00
             |               
            
                73.10
             |                           
            
                74.90
             | 
            
                74.19
             |                     
            
                32.98
             |                                 
            
                1,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/18/2018
             | 
            
                +0.20 / +0.26%
             |             
            
                77.00
             |           
            
                77.40
             |               
            
                77.00
             |                           
            
                77.40
             | 
            
                77.10
             |                     
            
                34.08
             |                                 
            
                20,100
             |            
            
                 
             |                                       
         
    
        
            | 
                4/17/2018
             | 
            
                +4.70 / +6.48%
             |             
            
                74.00
             |           
            
                77.20
             |               
            
                74.00
             |                           
            
                77.20
             | 
            
                76.00
             |                     
            
                34.00
             |                                 
            
                66,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/16/2018
             | 
            
                +1.90 / +2.69%
             |             
            
                71.00
             |           
            
                73.50
             |               
            
                71.00
             |                           
            
                72.50
             | 
            
                72.93
             |                     
            
                31.93
             |                                 
            
                9,500
             |            
            
                 
             |                                       
         
    
        
            | 
                4/13/2018
             | 
            
                -0.10 / -0.14%
             |             
            
                64.50
             |           
            
                75.00
             |               
            
                64.50
             |                           
            
                70.50
             | 
            
                70.58
             |                     
            
                31.05
             |                                 
            
                5,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/12/2018
             | 
            
                -4.40 / -5.87%
             |             
            
                72.10
             |           
            
                72.90
             |               
            
                69.00
             |                           
            
                70.60
             | 
            
                71.60
             |                     
            
                31.09
             |                                 
            
                7,500
             |            
            
                 
             |                                       
         
    
        
            | 
                4/11/2018
             | 
            
                -3.10 / -3.97%
             |             
            
                77.00
             |           
            
                77.00
             |               
            
                73.00
             |                           
            
                75.00
             | 
            
                75.25
             |                     
            
                33.03
             |                                 
            
                8,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/10/2018
             | 
            
                +0.10 / +0.13%
             |             
            
                80.50
             |           
            
                80.90
             |               
            
                78.10
             |                           
            
                78.10
             | 
            
                80.05
             |                     
            
                34.39
             |                                 
            
                2,200
             |            
            
                 
             |                                       
         
    
        
            | 
                4/9/2018
             | 
            
                -4.50 / -5.45%
             |             
            
                80.00
             |           
            
                80.00
             |               
            
                78.00
             |                           
            
                78.00
             | 
            
                78.68
             |                     
            
                34.35
             |                                 
            
                15,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/6/2018
             | 
            
                -1.80 / -2.17%
             |             
            
                82.60
             |           
            
                83.00
             |               
            
                81.00
             |                           
            
                81.00
             | 
            
                82.47
             |                     
            
                35.67
             |                                 
            
                31,600
             |            
            
                 
             |                                       
         
    
        
            | 
                4/5/2018
             | 
            
                +0.80 / +0.98%
             |             
            
                82.10
             |           
            
                82.80
             |               
            
                81.90
             |                           
            
                82.80
             | 
            
                82.40
             |                     
            
                36.46
             |                                 
            
                34,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/4/2018
             | 
            
                +1.10 / +1.36%
             |             
            
                79.10
             |           
            
                82.50
             |               
            
                79.10
             |                           
            
                82.00
             | 
            
                81.76
             |                     
            
                36.11
             |                                 
            
                51,561
             |            
            
                 
             |                                       
         
    
        
            | 
                4/3/2018
             | 
            
                -1.10 / -1.34%
             |             
            
                84.50
             |           
            
                84.50
             |               
            
                78.00
             |                           
            
                80.90
             | 
            
                79.69
             |                     
            
                35.63
             |                                 
            
                3,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                4/2/2018
             | 
            
                -0.80 / -0.97%
             |             
            
                91.50
             |           
            
                91.50
             |               
            
                82.00
             |                           
            
                82.00
             | 
            
                84.74
             |                     
            
                36.11
             |                                 
            
                13,700
             |            
            
                 
             |                                       
         
    
        
            | 
                3/30/2018
             | 
            
                +1.50 / +1.84%
             |             
            
                82.00
             |           
            
                85.00
             |               
            
                81.80
             |                           
            
                83.00
             | 
            
                82.85
             |                     
            
                36.55
             |                                 
            
                36,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/29/2018
             | 
            
                +8.50 / +11.64%
             |             
            
                76.00
             |           
            
                81.50
             |               
            
                76.00
             |                           
            
                81.50
             | 
            
                78.75
             |                     
            
                35.89
             |                                 
            
                207,800
             |            
            
                 
             |                                       
         
    
        
            | 
                3/28/2018
             | 
            
                -6.50 / -8.18%
             |             
            
                76.70
             |           
            
                80.00
             |               
            
                73.00
             |                           
            
                73.00
             | 
            
                76.01
             |                     
            
                32.15
             |                                 
            
                2,070
             |  
            
                 
             |                                                              
             
    
        			
            | 
                3/27/2018
             | 
            
                +9.50 / +13.57%
             |             
            
                73.90
             |           
            
                79.50
             |               
            
                64.60
             |                           
            
                79.50
             | 
            
                76.69
             |                     
            
                35.01
             |                                 
            
                6,205
             |            
            
                 
             |                                       
         
    
        
            | 
                3/26/2018
             | 
            
                +5.70 / +8.86%
             |             
            
                64.60
             |           
            
                70.00
             |               
            
                64.60
             |                           
            
                70.00
             | 
            
                69.24
             |                     
            
                30.83
             |                                 
            
                4,900
             |  
            
                 
             |                                                              
             
    
         
    
    
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						| 
 Market Update 
        
            
                Last updated at 12:45:00 PM
                                                                
            
            
            
            
        
        
     
 
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