| 
    
        
            | 
                    Closing price on 11/12/2019
                 |  |  
    
        |           
                
                    | Open | 1.73 |  
                    | High | 1.77 |  
                    | Low | 1.73 |  
                    | Volume | 14,490 |  
                    | Split-adjusted Price | 1.65 |  
                
             | 
 |  VOS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 11/12/2019 | +0.04 / +2.31% | 1.73 | 1.77 | 1.73 | 1.77 | 1.75 | 1.65 | 14,490 |   |  
            | 11/11/2019 | +0.03 / +1.76% | 1.70 | 1.75 | 1.69 | 1.73 | 1.69 | 1.61 | 7,680 |   |  			
            | 11/8/2019 | -0.01 / -0.58% | 1.72 | 1.75 | 1.70 | 1.70 | 1.73 | 1.58 | 35,290 |   |  
            | 11/7/2019 | 0.00 / 0.00% | 1.75 | 1.75 | 1.70 | 1.71 | 1.73 | 1.59 | 17,080 |   |  			
            | 11/6/2019 | -0.04 / -2.29% | 1.75 | 1.77 | 1.71 | 1.71 | 1.76 | 1.59 | 13,660 |   |  
            | 11/5/2019 | +0.05 / +2.94% | 1.70 | 1.75 | 1.68 | 1.75 | 1.71 | 1.63 | 20,460 |   |  			
            | 11/4/2019 | -0.06 / -3.41% | 1.75 | 1.80 | 1.70 | 1.70 | 1.73 | 1.58 | 292,620 |   |  
            | 11/1/2019 | -0.01 / -0.56% | 1.77 | 1.77 | 1.70 | 1.76 | 1.70 | 1.64 | 78,020 |   |  			
            | 10/31/2019 | +0.02 / +1.14% | 1.71 | 1.77 | 1.71 | 1.77 | 1.73 | 1.65 | 39,900 |   |  
            | 10/30/2019 | -0.01 / -0.57% | 1.72 | 1.85 | 1.71 | 1.75 | 1.76 | 1.63 | 12,520 |   |  			
            | 10/29/2019 | +0.04 / +2.33% | 1.80 | 1.80 | 1.72 | 1.76 | 1.74 | 1.64 | 105,870 |   |  
            | 10/28/2019 | 0.00 / 0.00% | 1.84 | 1.84 | 1.72 | 1.72 | 1.73 | 1.60 | 22,510 |   |  			
            | 10/25/2019 | -0.03 / -1.71% | 1.71 | 1.79 | 1.71 | 1.72 | 1.73 | 1.60 | 79,720 |   |  
            | 10/24/2019 | -0.05 / -2.78% | 1.76 | 1.80 | 1.70 | 1.75 | 1.79 | 1.63 | 68,040 |   |  			
            | 10/23/2019 | -0.05 / -2.70% | 1.85 | 1.92 | 1.80 | 1.80 | 1.84 | 1.68 | 5,140 |   |  
            | 10/22/2019 | +0.11 / +6.32% | 1.82 | 1.86 | 1.81 | 1.85 | 1.84 | 1.72 | 154,480 |   |  			
            | 10/21/2019 | +0.11 / +6.75% | 1.63 | 1.74 | 1.63 | 1.74 | 1.73 | 1.62 | 229,930 |   |  
            | 10/18/2019 | -0.07 / -4.12% | 1.70 | 1.78 | 1.63 | 1.63 | 1.66 | 1.52 | 83,770 |   |  			
            | 10/17/2019 | -0.08 / -4.49% | 1.78 | 1.79 | 1.70 | 1.70 | 1.71 | 1.58 | 62,470 |   |  
            | 10/16/2019 | +0.03 / +1.71% | 1.80 | 1.80 | 1.77 | 1.78 | 1.79 | 1.66 | 56,270 |   |  			
            | 10/15/2019 | -0.02 / -1.13% | 1.77 | 1.80 | 1.75 | 1.75 | 1.77 | 1.63 | 116,310 |   |  
            | 10/14/2019 | -0.03 / -1.67% | 1.80 | 1.80 | 1.75 | 1.77 | 1.78 | 1.65 | 15,180 |   |  			
            | 10/11/2019 | +0.01 / +0.56% | 1.84 | 1.84 | 1.76 | 1.80 | 1.79 | 1.68 | 53,040 |   |  
            | 10/10/2019 | 0.00 / 0.00% | 1.80 | 1.84 | 1.79 | 1.79 | 1.81 | 1.67 | 21,330 |   |  			
            | 10/9/2019 | -0.03 / -1.65% | 1.80 | 1.80 | 1.75 | 1.79 | 1.77 | 1.67 | 32,120 |   |  
            | 10/8/2019 | +0.03 / +1.68% | 1.80 | 1.82 | 1.70 | 1.82 | 1.74 | 1.69 | 33,280 |   |  			
            | 10/7/2019 | -0.06 / -3.24% | 1.89 | 1.89 | 1.79 | 1.79 | 1.80 | 1.67 | 99,200 |   |  
            | 10/4/2019 | 0.00 / 0.00% | 1.85 | 1.86 | 1.84 | 1.85 | 1.84 | 1.72 | 30,930 |   |  			
            | 10/3/2019 | -0.05 / -2.63% | 1.93 | 1.93 | 1.85 | 1.85 | 1.89 | 1.72 | 21,160 |   |  
            | 10/2/2019 | -0.04 / -2.06% | 1.94 | 1.94 | 1.87 | 1.90 | 1.88 | 1.77 | 82,590 |   |  |