| 
    
        
            | 
                    Closing price on 3/13/2020
                 |  |  
    
        |           
                
                    | Open | 1.30 |  
                    | High | 1.40 |  
                    | Low | 1.27 |  
                    | Volume | 321,600 |  
                    | Split-adjusted Price | 1.30 |  
                
             | 
 |  VOS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 3/13/2020 | +0.04 / +2.94% | 1.30 | 1.40 | 1.27 | 1.40 | 1.29 | 1.30 | 321,600 |   |  
            | 3/12/2020 | -0.10 / -6.85% | 1.46 | 1.46 | 1.36 | 1.36 | 1.38 | 1.27 | 610,610 |   |  			
            | 3/11/2020 | -0.08 / -5.19% | 1.55 | 1.58 | 1.44 | 1.46 | 1.50 | 1.36 | 242,150 |   |  
            | 3/10/2020 | +0.05 / +3.36% | 1.40 | 1.55 | 1.40 | 1.54 | 1.49 | 1.43 | 41,590 |   |  			
            | 3/9/2020 | -0.11 / -6.88% | 1.53 | 1.55 | 1.49 | 1.49 | 1.51 | 1.39 | 530,930 |   |  
            | 3/6/2020 | -0.02 / -1.23% | 1.62 | 1.62 | 1.59 | 1.60 | 1.59 | 1.49 | 173,950 |   |  			
            | 3/5/2020 | +0.04 / +2.53% | 1.58 | 1.65 | 1.57 | 1.62 | 1.62 | 1.51 | 498,780 |   |  
            | 3/4/2020 | +0.02 / +1.28% | 1.57 | 1.58 | 1.56 | 1.58 | 1.57 | 1.47 | 91,600 |   |  			
            | 3/3/2020 | +0.03 / +1.96% | 1.53 | 1.60 | 1.53 | 1.56 | 1.56 | 1.45 | 158,700 |   |  
            | 3/2/2020 | -0.04 / -2.55% | 1.57 | 1.57 | 1.53 | 1.53 | 1.55 | 1.42 | 310,400 |   |  			
            | 2/28/2020 | 0.00 / 0.00% | 1.60 | 1.60 | 1.55 | 1.57 | 1.55 | 1.46 | 97,790 |   |  
            | 2/27/2020 | -0.04 / -2.48% | 1.61 | 1.61 | 1.57 | 1.57 | 1.58 | 1.46 | 48,090 |   |  			
            | 2/26/2020 | -0.01 / -0.62% | 1.62 | 1.62 | 1.55 | 1.61 | 1.57 | 1.50 | 75,180 |   |  
            | 2/25/2020 | +0.05 / +3.18% | 1.52 | 1.62 | 1.52 | 1.62 | 1.56 | 1.51 | 85,290 |   |  			
            | 2/24/2020 | -0.10 / -5.99% | 1.64 | 1.65 | 1.56 | 1.57 | 1.59 | 1.46 | 343,270 |   |  
            | 2/21/2020 | 0.00 / 0.00% | 1.65 | 1.78 | 1.62 | 1.67 | 1.70 | 1.55 | 317,920 |   |  			
            | 2/20/2020 | -0.02 / -1.18% | 1.69 | 1.70 | 1.61 | 1.67 | 1.66 | 1.55 | 150,760 |   |  
            | 2/19/2020 | +0.11 / +6.96% | 1.61 | 1.69 | 1.55 | 1.69 | 1.64 | 1.57 | 316,240 |   |  			
            | 2/18/2020 | -0.01 / -0.63% | 1.58 | 1.60 | 1.56 | 1.58 | 1.58 | 1.47 | 160,620 |   |  
            | 2/17/2020 | -0.02 / -1.24% | 1.59 | 1.64 | 1.57 | 1.59 | 1.60 | 1.48 | 72,670 |   |  			
            | 2/14/2020 | -0.06 / -3.59% | 1.67 | 1.67 | 1.60 | 1.61 | 1.61 | 1.50 | 115,160 |   |  
            | 2/13/2020 | +0.04 / +2.45% | 1.62 | 1.67 | 1.60 | 1.67 | 1.61 | 1.55 | 141,870 |   |  			
            | 2/12/2020 | +0.04 / +2.52% | 1.59 | 1.67 | 1.59 | 1.63 | 1.63 | 1.52 | 33,720 |   |  
            | 2/11/2020 | -0.10 / -5.92% | 1.69 | 1.69 | 1.58 | 1.59 | 1.61 | 1.48 | 315,730 |   |  			
            | 2/10/2020 | -0.07 / -3.98% | 1.76 | 1.76 | 1.65 | 1.69 | 1.69 | 1.57 | 134,120 |   |  
            | 2/7/2020 | -0.06 / -3.30% | 1.82 | 1.82 | 1.71 | 1.76 | 1.74 | 1.64 | 115,230 |   |  			
            | 2/6/2020 | +0.08 / +4.60% | 1.74 | 1.86 | 1.74 | 1.82 | 1.81 | 1.69 | 865,950 |   |  
            | 2/5/2020 | +0.08 / +4.82% | 1.75 | 1.76 | 1.70 | 1.74 | 1.74 | 1.62 | 229,350 |   |  			
            | 2/4/2020 | +0.10 / +6.41% | 1.56 | 1.66 | 1.50 | 1.66 | 1.61 | 1.55 | 251,150 |   |  
            | 2/3/2020 | -0.02 / -1.27% | 1.52 | 1.56 | 1.47 | 1.56 | 1.49 | 1.45 | 56,310 |   |  |