| 
                 
                    Closing price on 11/14/2017
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    4.50 | 
                 
                
                    | High | 
                    4.50 | 
                 
                
                    | Low | 
                    4.50 | 
                     
                
                    | Volume | 
                    11,500 | 
                                 
                
                    | Split-adjusted Price | 
                    4.10 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
PVO Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                11/14/2017
             | 
            
                0.00 / 0.00%
             |             
            
                4.50
             |           
            
                4.50
             |               
            
                4.50
             |                           
            
                4.50
             | 
            
                4.50
             |                     
            
                4.10
             |                                 
            
                11,500
             |            
            
                 
             |                                       
         
    
        
            | 
                11/13/2017
             | 
            
                +0.10 / +2.27%
             |             
            
                4.30
             |           
            
                4.50
             |               
            
                4.30
             |                           
            
                4.50
             | 
            
                4.40
             |                     
            
                4.10
             |                                 
            
                13,100
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/10/2017
             | 
            
                -0.20 / -4.44%
             |             
            
                4.40
             |           
            
                4.40
             |               
            
                4.10
             |                           
            
                4.30
             | 
            
                4.36
             |                     
            
                3.91
             |                                 
            
                9,100
             |            
            
                 
             |                                       
         
    
        
            | 
                11/9/2017
             | 
            
                0.00 / 0.00%
             |             
            
                4.50
             |           
            
                4.50
             |               
            
                4.50
             |                           
            
                4.50
             | 
            
                4.50
             |                     
            
                4.10
             |                                 
            
                8,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/8/2017
             | 
            
                -0.10 / -2.17%
             |             
            
                4.60
             |           
            
                4.60
             |               
            
                4.50
             |                           
            
                4.50
             | 
            
                4.50
             |                     
            
                4.10
             |                                 
            
                12,300
             |            
            
                 
             |                                       
         
    
        
            | 
                11/7/2017
             | 
            
                -0.10 / -2.13%
             |             
            
                4.60
             |           
            
                4.60
             |               
            
                4.50
             |                           
            
                4.60
             | 
            
                4.60
             |                     
            
                4.19
             |                                 
            
                5,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/6/2017
             | 
            
                +0.20 / +4.44%
             |             
            
                4.70
             |           
            
                4.70
             |               
            
                4.50
             |                           
            
                4.70
             | 
            
                4.58
             |                     
            
                4.28
             |                                 
            
                5,700
             |            
            
                 
             |                                       
         
    
        
            | 
                11/3/2017
             | 
            
                -0.10 / -2.13%
             |             
            
                4.50
             |           
            
                4.60
             |               
            
                4.50
             |                           
            
                4.60
             | 
            
                4.53
             |                     
            
                4.19
             |                                 
            
                3,000
             |  
            
                 
             |                                                              
             
    
        			
            | 
                11/2/2017
             | 
            
                -0.20 / -4.08%
             |             
            
                4.50
             |           
            
                4.70
             |               
            
                4.50
             |                           
            
                4.70
             | 
            
                4.51
             |                     
            
                4.28
             |                                 
            
                5,200
             |            
            
                 
             |                                       
         
    
        
            | 
                11/1/2017
             | 
            
                0.00 / 0.00%
             |             
            
                4.90
             |           
            
                4.90
             |               
            
                4.90
             |                           
            
                4.90
             | 
            
                4.90
             |                     
            
                4.46
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/31/2017
             | 
            
                0.00 / 0.00%
             |             
            
                4.70
             |           
            
                4.90
             |               
            
                4.70
             |                           
            
                4.90
             | 
            
                4.87
             |                     
            
                4.46
             |                                 
            
                5,800
             |            
            
                 
             |                                       
         
    
        
            | 
                10/30/2017
             | 
            
                0.00 / 0.00%
             |             
            
                4.90
             |           
            
                4.90
             |               
            
                4.90
             |                           
            
                4.90
             | 
            
                4.90
             |                     
            
                4.46
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/27/2017
             | 
            
                0.00 / 0.00%
             |             
            
                4.90
             |           
            
                4.90
             |               
            
                4.90
             |                           
            
                4.90
             | 
            
                4.90
             |                     
            
                4.46
             |                                 
            
                0
             |            
            
                 
             |                                       
         
    
        
            | 
                10/26/2017
             | 
            
                0.00 / 0.00%
             |             
            
                4.90
             |           
            
                4.90
             |               
            
                4.90
             |                           
            
                4.90
             | 
            
                4.90
             |                     
            
                4.46
             |                                 
            
                0
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/25/2017
             | 
            
                +0.10 / +2.08%
             |             
            
                4.90
             |           
            
                4.90
             |               
            
                4.80
             |                           
            
                4.90
             | 
            
                4.86
             |                     
            
                4.46
             |                                 
            
                2,500
             |            
            
                 
             |                                       
         
    
        
            | 
                10/24/2017
             | 
            
                -0.10 / -2.04%
             |             
            
                4.90
             |           
            
                4.90
             |               
            
                4.80
             |                           
            
                4.80
             | 
            
                4.84
             |                     
            
                4.37
             |                                 
            
                27,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/23/2017
             | 
            
                -0.10 / -2.00%
             |             
            
                4.90
             |           
            
                4.90
             |               
            
                4.80
             |                           
            
                4.90
             | 
            
                4.90
             |                     
            
                4.46
             |                                 
            
                16,500
             |            
            
                 
             |                                       
         
    
        
            | 
                10/20/2017
             | 
            
                -0.10 / -1.96%
             |             
            
                5.00
             |           
            
                5.00
             |               
            
                5.00
             |                           
            
                5.00
             | 
            
                5.00
             |                     
            
                4.55
             |                                 
            
                2,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/19/2017
             | 
            
                0.00 / 0.00%
             |             
            
                5.00
             |           
            
                5.10
             |               
            
                5.00
             |                           
            
                5.10
             | 
            
                5.01
             |                     
            
                4.64
             |                                 
            
                4,100
             |            
            
                 
             |                                       
         
    
        
            | 
                10/18/2017
             | 
            
                +0.10 / +2.00%
             |             
            
                5.00
             |           
            
                5.10
             |               
            
                5.00
             |                           
            
                5.10
             | 
            
                5.00
             |                     
            
                4.64
             |                                 
            
                24,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/17/2017
             | 
            
                -0.10 / -1.96%
             |             
            
                5.00
             |           
            
                5.10
             |               
            
                5.00
             |                           
            
                5.00
             | 
            
                5.02
             |                     
            
                4.55
             |                                 
            
                24,300
             |            
            
                 
             |                                       
         
    
        
            | 
                10/16/2017
             | 
            
                +0.20 / +4.08%
             |             
            
                4.90
             |           
            
                5.10
             |               
            
                4.90
             |                           
            
                5.10
             | 
            
                4.98
             |                     
            
                4.64
             |                                 
            
                22,850
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/13/2017
             | 
            
                0.00 / 0.00%
             |             
            
                4.80
             |           
            
                5.00
             |               
            
                4.80
             |                           
            
                4.90
             | 
            
                4.91
             |                     
            
                4.46
             |                                 
            
                79,000
             |            
            
                 
             |                                       
         
    
        
            | 
                10/12/2017
             | 
            
                0.00 / 0.00%
             |             
            
                4.80
             |           
            
                4.90
             |               
            
                4.80
             |                           
            
                4.90
             | 
            
                4.87
             |                     
            
                4.46
             |                                 
            
                8,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/11/2017
             | 
            
                +0.10 / +2.08%
             |             
            
                4.90
             |           
            
                4.90
             |               
            
                4.80
             |                           
            
                4.90
             | 
            
                4.89
             |                     
            
                4.46
             |                                 
            
                7,600
             |            
            
                 
             |                                       
         
    
        
            | 
                10/10/2017
             | 
            
                -0.10 / -2.04%
             |             
            
                4.90
             |           
            
                5.00
             |               
            
                4.80
             |                           
            
                4.80
             | 
            
                4.87
             |                     
            
                4.37
             |                                 
            
                17,400
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/9/2017
             | 
            
                -0.10 / -2.00%
             |             
            
                5.00
             |           
            
                5.00
             |               
            
                4.90
             |                           
            
                4.90
             | 
            
                4.91
             |                     
            
                4.46
             |                                 
            
                2,945
             |            
            
                 
             |                                       
         
    
        
            | 
                10/6/2017
             | 
            
                +0.20 / +4.17%
             |             
            
                4.90
             |           
            
                5.10
             |               
            
                4.90
             |                           
            
                5.00
             | 
            
                5.04
             |                     
            
                4.55
             |                                 
            
                55,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                10/5/2017
             | 
            
                0.00 / 0.00%
             |             
            
                4.80
             |           
            
                4.90
             |               
            
                4.80
             |                           
            
                4.80
             | 
            
                4.83
             |                     
            
                4.37
             |                                 
            
                6,400
             |            
            
                 
             |                                       
         
    
        
            | 
                10/4/2017
             | 
            
                0.00 / 0.00%
             |             
            
                4.80
             |           
            
                4.80
             |               
            
                4.80
             |                           
            
                4.80
             | 
            
                4.80
             |                     
            
                4.37
             |                                 
            
                6,400
             |  
            
                 
             |                                                              
             
    
         
    
    
 |