| 
                 
                    Closing price on 9/20/2016
                 
             | 
            
                                
             | 
         
         
 
    
        
                      
                
                    | Open | 
                    1.70 | 
                 
                
                    | High | 
                    1.80 | 
                 
                
                    | Low | 
                    1.60 | 
                     
                
                    | Volume | 
                    146,010 | 
                                 
                
                    | Split-adjusted Price | 
                    1.80 | 
                 
             
            
            
                
             
         | 
        
            
            
             
                            
         | 
     
 
ACM Historical Quote 
        
            
                | 
                    Date
                 | 
                
                    Change
                 |                 
                
                    Open
                 |          
                
                    High
                 |            
                
                    Low
                 |                                                 
                
                    Close
                 | 
                
                    Average
                 | 
                
                    Adjusted Close
                 |                                                 
                
                    Volume
                 |     
                
                     
                 |                                       
                             
    
        			
            | 
                9/20/2016
             | 
            
                +0.10 / +5.88%
             |             
            
                1.70
             |           
            
                1.80
             |               
            
                1.60
             |                           
            
                1.80
             | 
            
                1.70
             |                     
            
                1.80
             |                                 
            
                146,010
             |            
            
                 
             |                                       
         
    
        
            | 
                9/19/2016
             | 
            
                0.00 / 0.00%
             |             
            
                1.80
             |           
            
                1.80
             |               
            
                1.60
             |                           
            
                1.70
             | 
            
                1.70
             |                     
            
                1.70
             |                                 
            
                188,668
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/16/2016
             | 
            
                -0.10 / -5.56%
             |             
            
                1.80
             |           
            
                1.80
             |               
            
                1.70
             |                           
            
                1.70
             | 
            
                1.71
             |                     
            
                1.70
             |                                 
            
                381,000
             |            
            
                 
             |                                       
         
    
        
            | 
                9/15/2016
             | 
            
                0.00 / 0.00%
             |             
            
                1.90
             |           
            
                1.90
             |               
            
                1.70
             |                           
            
                1.80
             | 
            
                1.80
             |                     
            
                1.80
             |                                 
            
                552,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/14/2016
             | 
            
                -0.10 / -5.26%
             |             
            
                1.90
             |           
            
                1.90
             |               
            
                1.80
             |                           
            
                1.80
             | 
            
                1.81
             |                     
            
                1.80
             |                                 
            
                437,700
             |            
            
                 
             |                                       
         
    
        
            | 
                9/13/2016
             | 
            
                0.00 / 0.00%
             |             
            
                1.90
             |           
            
                2.00
             |               
            
                1.80
             |                           
            
                1.90
             | 
            
                1.88
             |                     
            
                1.90
             |                                 
            
                269,700
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/12/2016
             | 
            
                0.00 / 0.00%
             |             
            
                1.90
             |           
            
                2.00
             |               
            
                1.90
             |                           
            
                1.90
             | 
            
                1.90
             |                     
            
                1.90
             |                                 
            
                319,900
             |            
            
                 
             |                                       
         
    
        
            | 
                9/9/2016
             | 
            
                0.00 / 0.00%
             |             
            
                1.90
             |           
            
                2.00
             |               
            
                1.80
             |                           
            
                1.90
             | 
            
                1.90
             |                     
            
                1.90
             |                                 
            
                133,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/8/2016
             | 
            
                0.00 / 0.00%
             |             
            
                1.90
             |           
            
                2.00
             |               
            
                1.80
             |                           
            
                1.90
             | 
            
                1.90
             |                     
            
                1.90
             |                                 
            
                267,700
             |            
            
                 
             |                                       
         
    
        
            | 
                9/7/2016
             | 
            
                -0.10 / -5.00%
             |             
            
                1.90
             |           
            
                2.00
             |               
            
                1.90
             |                           
            
                1.90
             | 
            
                2.00
             |                     
            
                1.90
             |                                 
            
                240,800
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/6/2016
             | 
            
                +0.10 / +5.26%
             |             
            
                1.90
             |           
            
                2.00
             |               
            
                1.90
             |                           
            
                2.00
             | 
            
                1.90
             |                     
            
                2.00
             |                                 
            
                254,100
             |            
            
                 
             |                                       
         
    
        
            | 
                9/5/2016
             | 
            
                -0.10 / -5.00%
             |             
            
                1.90
             |           
            
                2.00
             |               
            
                1.90
             |                           
            
                1.90
             | 
            
                1.90
             |                     
            
                1.90
             |                                 
            
                391,510
             |  
            
                 
             |                                                              
             
    
        			
            | 
                9/1/2016
             | 
            
                +0.10 / +5.26%
             |             
            
                1.90
             |           
            
                2.00
             |               
            
                1.80
             |                           
            
                2.00
             | 
            
                1.91
             |                     
            
                2.00
             |                                 
            
                183,900
             |            
            
                 
             |                                       
         
    
        
            | 
                8/31/2016
             | 
            
                0.00 / 0.00%
             |             
            
                1.90
             |           
            
                1.90
             |               
            
                1.90
             |                           
            
                1.90
             | 
            
                1.90
             |                     
            
                1.90
             |                                 
            
                405,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/30/2016
             | 
            
                -0.10 / -5.00%
             |             
            
                2.00
             |           
            
                2.00
             |               
            
                1.90
             |                           
            
                1.90
             | 
            
                1.95
             |                     
            
                1.90
             |                                 
            
                175,900
             |            
            
                 
             |                                       
         
    
        
            | 
                8/29/2016
             | 
            
                0.00 / 0.00%
             |             
            
                2.00
             |           
            
                2.00
             |               
            
                1.80
             |                           
            
                2.00
             | 
            
                1.99
             |                     
            
                2.00
             |                                 
            
                137,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/26/2016
             | 
            
                0.00 / 0.00%
             |             
            
                2.00
             |           
            
                2.00
             |               
            
                1.90
             |                           
            
                2.00
             | 
            
                1.97
             |                     
            
                2.00
             |                                 
            
                105,900
             |            
            
                 
             |                                       
         
    
        
            | 
                8/25/2016
             | 
            
                0.00 / 0.00%
             |             
            
                2.00
             |           
            
                2.10
             |               
            
                1.90
             |                           
            
                2.00
             | 
            
                2.01
             |                     
            
                2.00
             |                                 
            
                432,200
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/24/2016
             | 
            
                +0.10 / +5.26%
             |             
            
                2.00
             |           
            
                2.00
             |               
            
                1.90
             |                           
            
                2.00
             | 
            
                1.99
             |                     
            
                2.00
             |                                 
            
                382,300
             |            
            
                 
             |                                       
         
    
        
            | 
                8/23/2016
             | 
            
                -0.10 / -5.00%
             |             
            
                2.00
             |           
            
                2.00
             |               
            
                1.90
             |                           
            
                1.90
             | 
            
                1.91
             |                     
            
                1.90
             |                                 
            
                39,500
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/22/2016
             | 
            
                -0.10 / -4.76%
             |             
            
                2.00
             |           
            
                2.10
             |               
            
                2.00
             |                           
            
                2.00
             | 
            
                2.00
             |                     
            
                2.00
             |                                 
            
                484,900
             |            
            
                 
             |                                       
         
    
        
            | 
                8/19/2016
             | 
            
                +0.10 / +5.00%
             |             
            
                2.10
             |           
            
                2.10
             |               
            
                2.00
             |                           
            
                2.10
             | 
            
                2.00
             |                     
            
                2.10
             |                                 
            
                306,600
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/18/2016
             | 
            
                -0.10 / -4.76%
             |             
            
                2.10
             |           
            
                2.10
             |               
            
                2.00
             |                           
            
                2.00
             | 
            
                2.00
             |                     
            
                2.00
             |                                 
            
                507,800
             |            
            
                 
             |                                       
         
    
        
            | 
                8/17/2016
             | 
            
                0.00 / 0.00%
             |             
            
                2.00
             |           
            
                2.10
             |               
            
                2.00
             |                           
            
                2.10
             | 
            
                2.04
             |                     
            
                2.10
             |                                 
            
                695,918
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/16/2016
             | 
            
                +0.10 / +5.00%
             |             
            
                2.10
             |           
            
                2.10
             |               
            
                2.00
             |                           
            
                2.10
             | 
            
                2.02
             |                     
            
                2.10
             |                                 
            
                179,400
             |            
            
                 
             |                                       
         
    
        
            | 
                8/15/2016
             | 
            
                +0.10 / +5.26%
             |             
            
                1.90
             |           
            
                2.00
             |               
            
                1.90
             |                           
            
                2.00
             | 
            
                2.00
             |                     
            
                2.00
             |                                 
            
                493,160
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/12/2016
             | 
            
                -0.10 / -5.00%
             |             
            
                2.00
             |           
            
                2.10
             |               
            
                1.90
             |                           
            
                1.90
             | 
            
                2.00
             |                     
            
                1.90
             |                                 
            
                552,000
             |            
            
                 
             |                                       
         
    
        
            | 
                8/11/2016
             | 
            
                -0.10 / -4.76%
             |             
            
                2.10
             |           
            
                2.10
             |               
            
                2.00
             |                           
            
                2.00
             | 
            
                2.01
             |                     
            
                2.00
             |                                 
            
                405,900
             |  
            
                 
             |                                                              
             
    
        			
            | 
                8/10/2016
             | 
            
                +0.10 / +5.00%
             |             
            
                2.10
             |           
            
                2.20
             |               
            
                2.00
             |                           
            
                2.10
             | 
            
                2.10
             |                     
            
                2.10
             |                                 
            
                371,805
             |            
            
                 
             |                                       
         
    
        
            | 
                8/9/2016
             | 
            
                +0.10 / +5.26%
             |             
            
                1.80
             |           
            
                2.00
             |               
            
                1.80
             |                           
            
                2.00
             | 
            
                1.95
             |                     
            
                2.00
             |                                 
            
                919,530
             |  
            
                 
             |                                                              
             
    
         
    
    
 |