| 
    
        
            | 
                    Closing price on 7/16/2020
                 |  |  
    
        |           
                
                    | Open | 1.47 |  
                    | High | 1.50 |  
                    | Low | 1.44 |  
                    | Volume | 159,860 |  
                    | Split-adjusted Price | 1.36 |  
                
             | 
 |  VOS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 7/16/2020 | -0.01 / -0.68% | 1.47 | 1.50 | 1.44 | 1.46 | 1.46 | 1.36 | 159,860 |   |  
            | 7/15/2020 | 0.00 / 0.00% | 1.51 | 1.51 | 1.45 | 1.47 | 1.46 | 1.37 | 158,400 |   |  			
            | 7/14/2020 | -0.01 / -0.68% | 1.49 | 1.49 | 1.46 | 1.47 | 1.48 | 1.37 | 85,260 |   |  
            | 7/13/2020 | -0.02 / -1.33% | 1.50 | 1.52 | 1.45 | 1.48 | 1.47 | 1.38 | 431,570 |   |  			
            | 7/10/2020 | 0.00 / 0.00% | 1.53 | 1.53 | 1.49 | 1.50 | 1.50 | 1.40 | 58,120 |   |  
            | 7/9/2020 | 0.00 / 0.00% | 1.50 | 1.52 | 1.46 | 1.50 | 1.48 | 1.40 | 322,040 |   |  			
            | 7/8/2020 | 0.00 / 0.00% | 1.57 | 1.57 | 1.50 | 1.50 | 1.53 | 1.40 | 149,050 |   |  
            | 7/7/2020 | -0.05 / -3.23% | 1.52 | 1.59 | 1.50 | 1.50 | 1.53 | 1.40 | 166,990 |   |  			
            | 7/6/2020 | +0.07 / +4.73% | 1.48 | 1.58 | 1.47 | 1.55 | 1.54 | 1.44 | 151,990 |   |  
            | 7/3/2020 | +0.05 / +3.50% | 1.49 | 1.50 | 1.43 | 1.48 | 1.48 | 1.38 | 92,450 |   |  			
            | 7/2/2020 | -0.05 / -3.38% | 1.47 | 1.47 | 1.42 | 1.43 | 1.44 | 1.33 | 73,430 |   |  
            | 7/1/2020 | +0.06 / +4.23% | 1.45 | 1.48 | 1.41 | 1.48 | 1.44 | 1.38 | 127,450 |   |  			
            | 6/30/2020 | -0.05 / -3.40% | 1.47 | 1.53 | 1.42 | 1.42 | 1.44 | 1.32 | 261,330 |   |  
            | 6/29/2020 | -0.09 / -5.77% | 1.56 | 1.56 | 1.46 | 1.47 | 1.47 | 1.37 | 473,860 |   |  			
            | 6/26/2020 | -0.02 / -1.27% | 1.58 | 1.60 | 1.55 | 1.56 | 1.57 | 1.45 | 63,580 |   |  
            | 6/25/2020 | +0.01 / +0.64% | 1.60 | 1.60 | 1.53 | 1.58 | 1.57 | 1.47 | 127,500 |   |  			
            | 6/24/2020 | -0.04 / -2.48% | 1.61 | 1.63 | 1.57 | 1.57 | 1.60 | 1.46 | 219,450 |   |  
            | 6/23/2020 | -0.03 / -1.83% | 1.64 | 1.64 | 1.60 | 1.61 | 1.62 | 1.50 | 237,680 |   |  			
            | 6/22/2020 | -0.04 / -2.38% | 1.68 | 1.70 | 1.61 | 1.64 | 1.65 | 1.53 | 301,950 |   |  
            | 6/19/2020 | -0.02 / -1.18% | 1.64 | 1.70 | 1.64 | 1.68 | 1.68 | 1.56 | 322,440 |   |  			
            | 6/18/2020 | 0.00 / 0.00% | 1.70 | 1.71 | 1.66 | 1.70 | 1.69 | 1.58 | 227,490 |   |  
            | 6/17/2020 | -0.04 / -2.30% | 1.74 | 1.76 | 1.69 | 1.70 | 1.70 | 1.58 | 308,620 |   |  			
            | 6/16/2020 | +0.08 / +4.82% | 1.66 | 1.75 | 1.63 | 1.74 | 1.70 | 1.62 | 709,300 |   |  
            | 6/15/2020 | -0.04 / -2.35% | 1.76 | 1.76 | 1.62 | 1.66 | 1.70 | 1.55 | 682,770 |   |  			
            | 6/12/2020 | 0.00 / 0.00% | 1.59 | 1.70 | 1.59 | 1.70 | 1.66 | 1.58 | 793,230 |   |  
            | 6/11/2020 | +0.04 / +2.41% | 1.77 | 1.77 | 1.70 | 1.70 | 1.76 | 1.58 | 1,380,270 |   |  			
            | 6/10/2020 | +0.10 / +6.41% | 1.54 | 1.66 | 1.50 | 1.66 | 1.63 | 1.55 | 1,626,860 |   |  
            | 6/9/2020 | -0.05 / -3.11% | 1.65 | 1.66 | 1.56 | 1.56 | 1.60 | 1.45 | 516,720 |   |  			
            | 6/8/2020 | +0.04 / +2.55% | 1.63 | 1.66 | 1.58 | 1.61 | 1.63 | 1.50 | 831,840 |   |  
            | 6/5/2020 | +0.09 / +6.08% | 1.48 | 1.57 | 1.46 | 1.57 | 1.50 | 1.46 | 690,110 |   |  |