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                    Closing price on 12/1/2020
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                    | Open | 30.50 |  
                    | High | 31.70 |  
                    | Low | 30.00 |  
                    | Volume | 17,000 |  
                    | Split-adjusted Price | 12.09 |  
                
             | 
 |  VTK Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 12/1/2020 | -0.30 / -0.94% | 30.50 | 31.70 | 30.00 | 31.50 | 30.82 | 12.09 | 17,000 |   |  
            | 11/30/2020 | +0.40 / +1.27% | 31.40 | 32.00 | 31.40 | 31.80 | 31.83 | 12.20 | 26,200 |   |  			
            | 11/27/2020 | +0.10 / +0.32% | 31.20 | 32.00 | 31.20 | 31.70 | 31.37 | 12.16 | 12,800 |   |  
            | 11/26/2020 | -1.30 / -3.90% | 31.00 | 32.10 | 31.00 | 32.00 | 31.58 | 12.28 | 13,400 |   |  			
            | 11/25/2020 | -3.90 / -10.92% | 35.60 | 35.60 | 31.00 | 31.80 | 33.25 | 12.20 | 30,900 |   |  
            | 11/24/2020 | +4.00 / +12.66% | 35.00 | 36.30 | 33.50 | 35.60 | 35.66 | 13.66 | 68,500 |   |  			
            | 11/23/2020 | +4.20 / +14.74% | 29.00 | 32.70 | 29.00 | 32.70 | 31.63 | 12.55 | 89,100 |   |  
            | 11/20/2020 | +0.20 / +0.71% | 28.50 | 28.60 | 28.50 | 28.50 | 28.53 | 10.94 | 21,100 |   |  			
            | 11/19/2020 | +0.10 / +0.36% | 28.50 | 28.50 | 28.10 | 28.10 | 28.31 | 10.78 | 5,700 |   |  
            | 11/18/2020 | +0.10 / +0.36% | 28.00 | 28.00 | 28.00 | 28.00 | 28.00 | 10.74 | 18,600 |   |  			
            | 11/17/2020 | -0.30 / -1.07% | 28.00 | 28.10 | 27.60 | 27.70 | 27.95 | 10.63 | 6,100 |   |  
            | 11/16/2020 | 0.00 / 0.00% | 28.00 | 28.10 | 28.00 | 28.00 | 28.02 | 10.74 | 6,900 |   |  			
            | 11/13/2020 | -0.10 / -0.36% | 28.00 | 28.10 | 27.90 | 27.90 | 28.00 | 10.71 | 11,800 |   |  
            | 11/12/2020 | 0.00 / 0.00% | 28.00 | 28.20 | 28.00 | 28.00 | 28.02 | 10.74 | 11,100 |   |  			
            | 11/11/2020 | -0.50 / -1.75% | 28.10 | 28.50 | 28.00 | 28.00 | 28.03 | 10.74 | 15,000 |   |  
            | 11/10/2020 | +0.50 / +1.79% | 27.90 | 28.60 | 27.90 | 28.50 | 28.51 | 10.94 | 18,100 |   |  			
            | 11/9/2020 | +0.30 / +1.08% | 27.10 | 28.10 | 27.10 | 28.00 | 27.84 | 10.74 | 19,300 |   |  
            | 11/6/2020 | +0.10 / +0.37% | 29.90 | 29.90 | 27.10 | 27.10 | 27.67 | 10.40 | 1,500 |   |  			
            | 11/5/2020 | 0.00 / 0.00% | 27.00 | 27.00 | 27.00 | 27.00 | 27.00 | 10.36 | 13,200 |   |  
            | 11/4/2020 | +0.10 / +0.37% | 26.90 | 27.00 | 26.70 | 27.00 | 26.95 | 10.36 | 11,500 |   |  			
            | 11/3/2020 | +0.10 / +0.37% | 26.30 | 26.90 | 26.20 | 26.90 | 26.43 | 10.32 | 4,700 |   |  
            | 11/2/2020 | +0.30 / +1.13% | 25.60 | 26.80 | 25.60 | 26.80 | 26.20 | 10.28 | 400 |   |  			
            | 10/30/2020 | -0.50 / -1.85% | 26.50 | 26.50 | 26.50 | 26.50 | 26.50 | 10.17 | 2,800 |   |  
            | 10/29/2020 | +0.90 / +3.45% | 26.00 | 27.80 | 25.20 | 27.00 | 26.71 | 10.36 | 700 |   |  			
            | 10/28/2020 | 0.00 / 0.00% | 26.10 | 26.10 | 26.10 | 26.10 | 26.10 | 10.01 | 3,100 |   |  
            | 10/27/2020 | -0.40 / -1.51% | 26.50 | 26.50 | 26.10 | 26.10 | 26.44 | 10.01 | 4,000 |   |  			
            | 10/26/2020 | -0.70 / -2.57% | 27.20 | 27.20 | 26.50 | 26.50 | 26.94 | 10.17 | 7,300 |   |  
            | 10/23/2020 | +0.80 / +3.05% | 27.30 | 27.50 | 27.00 | 27.00 | 27.18 | 10.36 | 6,000 |   |  			
            | 10/22/2020 | +0.30 / +1.16% | 25.80 | 26.20 | 25.80 | 26.20 | 26.07 | 10.05 | 7,200 |   |  
            | 10/21/2020 | +0.10 / +0.39% | 25.80 | 25.90 | 25.80 | 25.90 | 25.84 | 9.94 | 4,900 |   |  |