| 
    
        
            | 
                    Closing price on 4/14/2020
                 |  |  
    
        |           
                
                    | Open | 1.33 |  
                    | High | 1.36 |  
                    | Low | 1.31 |  
                    | Volume | 56,760 |  
                    | Split-adjusted Price | 1.25 |  
                
             | 
 |  VOS Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 4/14/2020 | 0.00 / 0.00% | 1.33 | 1.36 | 1.31 | 1.34 | 1.32 | 1.25 | 56,760 |   |  
            | 4/13/2020 | -0.03 / -2.19% | 1.37 | 1.37 | 1.34 | 1.34 | 1.36 | 1.25 | 185,070 |   |  			
            | 4/10/2020 | 0.00 / 0.00% | 1.35 | 1.39 | 1.35 | 1.37 | 1.37 | 1.28 | 67,750 |   |  
            | 4/9/2020 | +0.03 / +2.24% | 1.32 | 1.38 | 1.32 | 1.37 | 1.35 | 1.28 | 214,650 |   |  			
            | 4/8/2020 | -0.01 / -0.74% | 1.34 | 1.34 | 1.31 | 1.34 | 1.33 | 1.25 | 52,060 |   |  
            | 4/7/2020 | +0.01 / +0.75% | 1.34 | 1.35 | 1.31 | 1.35 | 1.33 | 1.26 | 49,620 |   |  			
            | 4/6/2020 | -0.01 / -0.74% | 1.34 | 1.34 | 1.31 | 1.34 | 1.32 | 1.25 | 335,190 |   |  
            | 4/3/2020 | +0.07 / +5.47% | 1.28 | 1.36 | 1.28 | 1.35 | 1.34 | 1.26 | 165,490 |   |  			
            | 4/1/2020 | +0.04 / +3.23% | 1.22 | 1.28 | 1.22 | 1.28 | 1.23 | 1.19 | 34,060 |   |  
            | 3/31/2020 | 0.00 / 0.00% | 1.19 | 1.29 | 1.19 | 1.24 | 1.25 | 1.15 | 107,500 |   |  			
            | 3/30/2020 | -0.09 / -6.77% | 1.33 | 1.33 | 1.24 | 1.24 | 1.26 | 1.15 | 43,670 |   |  
            | 3/27/2020 | -0.01 / -0.75% | 1.34 | 1.36 | 1.31 | 1.33 | 1.33 | 1.24 | 63,390 |   |  			
            | 3/26/2020 | -0.05 / -3.60% | 1.37 | 1.38 | 1.34 | 1.34 | 1.36 | 1.25 | 86,070 |   |  
            | 3/25/2020 | +0.02 / +1.46% | 1.37 | 1.45 | 1.35 | 1.39 | 1.38 | 1.29 | 141,280 |   |  			
            | 3/24/2020 | 0.00 / 0.00% | 1.37 | 1.44 | 1.34 | 1.37 | 1.37 | 1.28 | 60,570 |   |  
            | 3/23/2020 | -0.05 / -3.52% | 1.42 | 1.44 | 1.33 | 1.37 | 1.36 | 1.28 | 199,910 |   |  			
            | 3/20/2020 | +0.09 / +6.77% | 1.37 | 1.42 | 1.37 | 1.42 | 1.41 | 1.32 | 286,690 |   |  
            | 3/19/2020 | -0.06 / -4.32% | 1.36 | 1.39 | 1.33 | 1.33 | 1.35 | 1.24 | 124,080 |   |  			
            | 3/18/2020 | 0.00 / 0.00% | 1.33 | 1.41 | 1.33 | 1.39 | 1.39 | 1.29 | 211,390 |   |  
            | 3/17/2020 | -0.03 / -2.11% | 1.39 | 1.39 | 1.34 | 1.39 | 1.37 | 1.29 | 83,710 |   |  			
            | 3/16/2020 | +0.02 / +1.43% | 1.33 | 1.43 | 1.33 | 1.42 | 1.41 | 1.32 | 109,760 |   |  
            | 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 |   |  |