| 
    
        
            | 
                    Closing price on 9/30/2020
                 |  |  
    
        |           
                
                    | Open | 1.46 |  
                    | High | 1.49 |  
                    | Low | 1.45 |  
                    | Volume | 141,580 |  
                    | Split-adjusted Price | 1.39 |  
                
             | 
 |  VOS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 9/30/2020 | +0.01 / +0.68% | 1.46 | 1.49 | 1.45 | 1.49 | 1.46 | 1.39 | 141,580 |   |  
            | 9/29/2020 | +0.01 / +0.68% | 1.50 | 1.50 | 1.47 | 1.48 | 1.49 | 1.38 | 295,750 |   |  			
            | 9/28/2020 | +0.09 / +6.52% | 1.44 | 1.47 | 1.39 | 1.47 | 1.45 | 1.37 | 143,650 |   |  
            | 9/25/2020 | -0.07 / -4.83% | 1.45 | 1.47 | 1.35 | 1.38 | 1.40 | 1.28 | 227,860 |   |  			
            | 9/24/2020 | -0.02 / -1.36% | 1.47 | 1.47 | 1.44 | 1.45 | 1.45 | 1.35 | 382,310 |   |  
            | 9/23/2020 | 0.00 / 0.00% | 1.46 | 1.50 | 1.45 | 1.47 | 1.46 | 1.37 | 235,910 |   |  			
            | 9/22/2020 | -0.03 / -2.00% | 1.50 | 1.50 | 1.47 | 1.47 | 1.48 | 1.37 | 282,680 |   |  
            | 9/21/2020 | 0.00 / 0.00% | 1.49 | 1.51 | 1.49 | 1.50 | 1.50 | 1.40 | 133,080 |   |  			
            | 9/18/2020 | +0.02 / +1.35% | 1.48 | 1.51 | 1.48 | 1.50 | 1.50 | 1.40 | 129,380 |   |  
            | 9/17/2020 | -0.02 / -1.33% | 1.50 | 1.50 | 1.47 | 1.48 | 1.49 | 1.38 | 235,040 |   |  			
            | 9/16/2020 | 0.00 / 0.00% | 1.51 | 1.51 | 1.47 | 1.50 | 1.48 | 1.40 | 125,300 |   |  
            | 9/15/2020 | 0.00 / 0.00% | 1.54 | 1.54 | 1.48 | 1.50 | 1.49 | 1.40 | 219,780 |   |  			
            | 9/14/2020 | 0.00 / 0.00% | 1.51 | 1.52 | 1.50 | 1.50 | 1.50 | 1.40 | 281,320 |   |  
            | 9/11/2020 | -0.01 / -0.66% | 1.52 | 1.53 | 1.50 | 1.50 | 1.51 | 1.40 | 98,750 |   |  			
            | 9/10/2020 | -0.01 / -0.66% | 1.53 | 1.55 | 1.50 | 1.51 | 1.52 | 1.41 | 118,570 |   |  
            | 9/9/2020 | +0.05 / +3.40% | 1.47 | 1.52 | 1.45 | 1.52 | 1.47 | 1.41 | 221,980 |   |  			
            | 9/8/2020 | +0.01 / +0.68% | 1.46 | 1.50 | 1.44 | 1.47 | 1.45 | 1.37 | 115,750 |   |  
            | 9/7/2020 | -0.02 / -1.35% | 1.53 | 1.53 | 1.46 | 1.46 | 1.49 | 1.36 | 267,550 |   |  			
            | 9/4/2020 | -0.05 / -3.27% | 1.46 | 1.53 | 1.46 | 1.48 | 1.48 | 1.38 | 283,560 |   |  
            | 9/3/2020 | -0.01 / -0.65% | 1.52 | 1.57 | 1.49 | 1.53 | 1.52 | 1.42 | 293,510 |   |  			
            | 9/1/2020 | -0.06 / -3.75% | 1.58 | 1.58 | 1.51 | 1.54 | 1.54 | 1.43 | 347,830 |   |  
            | 8/31/2020 | +0.03 / +1.91% | 1.60 | 1.64 | 1.55 | 1.60 | 1.60 | 1.49 | 513,700 |   |  			
            | 8/28/2020 | +0.10 / +6.80% | 1.49 | 1.57 | 1.49 | 1.57 | 1.56 | 1.46 | 633,760 |   |  
            | 8/27/2020 | +0.06 / +4.26% | 1.40 | 1.49 | 1.40 | 1.47 | 1.46 | 1.37 | 209,710 |   |  			
            | 8/26/2020 | 0.00 / 0.00% | 1.41 | 1.45 | 1.38 | 1.41 | 1.40 | 1.31 | 201,560 |   |  
            | 8/25/2020 | -0.02 / -1.40% | 1.44 | 1.47 | 1.39 | 1.41 | 1.43 | 1.31 | 160,300 |   |  			
            | 8/24/2020 | +0.02 / +1.42% | 1.41 | 1.45 | 1.41 | 1.43 | 1.44 | 1.33 | 114,260 |   |  
            | 8/21/2020 | -0.01 / -0.70% | 1.41 | 1.43 | 1.41 | 1.41 | 1.41 | 1.31 | 77,200 |   |  			
            | 8/20/2020 | 0.00 / 0.00% | 1.42 | 1.43 | 1.40 | 1.42 | 1.40 | 1.32 | 40,700 |   |  
            | 8/19/2020 | 0.00 / 0.00% | 1.43 | 1.44 | 1.41 | 1.42 | 1.42 | 1.32 | 88,800 |   |  |