| 
    
        
            | 
                    Closing price on 2/11/2020
                 |  |  
    
        |           
                
                    | Open | 1.69 |  
                    | High | 1.69 |  
                    | Low | 1.58 |  
                    | Volume | 315,730 |  
                    | Split-adjusted Price | 1.48 |  
                
             | 
 |  VOS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 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 |   |  
            | 1/31/2020 | 0.00 / 0.00% | 1.58 | 1.58 | 1.51 | 1.58 | 1.55 | 1.47 | 58,660 |   |  			
            | 1/30/2020 | -0.02 / -1.25% | 1.60 | 1.60 | 1.55 | 1.58 | 1.56 | 1.47 | 168,880 |   |  
            | 1/22/2020 | +0.01 / +0.63% | 1.59 | 1.60 | 1.59 | 1.60 | 1.60 | 1.49 | 10,290 |   |  			
            | 1/21/2020 | 0.00 / 0.00% | 1.60 | 1.60 | 1.54 | 1.59 | 1.56 | 1.48 | 21,800 |   |  
            | 1/20/2020 | +0.03 / +1.92% | 1.51 | 1.62 | 1.51 | 1.59 | 1.55 | 1.48 | 107,140 |   |  			
            | 1/17/2020 | -0.01 / -0.64% | 1.55 | 1.59 | 1.51 | 1.56 | 1.57 | 1.45 | 40,150 |   |  
            | 1/16/2020 | +0.02 / +1.29% | 1.55 | 1.57 | 1.50 | 1.57 | 1.52 | 1.46 | 30,890 |   |  			
            | 1/15/2020 | -0.01 / -0.64% | 1.53 | 1.57 | 1.52 | 1.55 | 1.53 | 1.44 | 17,020 |   |  
            | 1/14/2020 | +0.03 / +1.96% | 1.50 | 1.56 | 1.50 | 1.56 | 1.53 | 1.45 | 12,800 |   |  			
            | 1/13/2020 | -0.04 / -2.55% | 1.57 | 1.57 | 1.53 | 1.53 | 1.55 | 1.42 | 45,860 |   |  
            | 1/10/2020 | +0.01 / +0.64% | 1.56 | 1.57 | 1.55 | 1.57 | 1.57 | 1.46 | 49,800 |   |  			
            | 1/9/2020 | 0.00 / 0.00% | 1.58 | 1.58 | 1.56 | 1.56 | 1.57 | 1.45 | 24,230 |   |  
            | 1/8/2020 | -0.04 / -2.50% | 1.60 | 1.60 | 1.56 | 1.56 | 1.57 | 1.45 | 109,930 |   |  			
            | 1/7/2020 | +0.02 / +1.27% | 1.58 | 1.60 | 1.56 | 1.60 | 1.58 | 1.49 | 64,000 |   |  
            | 1/6/2020 | -0.05 / -3.07% | 1.61 | 1.63 | 1.58 | 1.58 | 1.58 | 1.47 | 29,100 |   |  			
            | 1/3/2020 | +0.05 / +3.16% | 1.64 | 1.64 | 1.56 | 1.63 | 1.57 | 1.52 | 591,350 |   |  
            | 1/2/2020 | -0.07 / -4.24% | 1.61 | 1.65 | 1.58 | 1.58 | 1.59 | 1.47 | 120,060 |   |  			
            | 12/31/2019 | -0.02 / -1.20% | 1.67 | 1.67 | 1.58 | 1.65 | 1.59 | 1.54 | 43,360 |   |  
            | 12/30/2019 | +0.05 / +3.09% | 1.58 | 1.68 | 1.58 | 1.67 | 1.62 | 1.55 | 210,120 |   |  			
            | 12/27/2019 | -0.05 / -2.99% | 1.67 | 1.67 | 1.61 | 1.62 | 1.62 | 1.51 | 216,820 |   |  
            | 12/26/2019 | +0.01 / +0.60% | 1.61 | 1.67 | 1.61 | 1.67 | 1.62 | 1.55 | 332,960 |   |  			
            | 12/25/2019 | +0.02 / +1.22% | 1.63 | 1.66 | 1.61 | 1.66 | 1.63 | 1.55 | 74,030 |   |  
            | 12/24/2019 | -0.02 / -1.20% | 1.67 | 1.67 | 1.63 | 1.64 | 1.64 | 1.53 | 129,250 |   |  |