| 
    
        
            | 
                    Closing price on 1/19/2018
                 |  |  
    
        |           
                
                    | Open | 1.50 |  
                    | High | 1.60 |  
                    | Low | 1.40 |  
                    | Volume | 186,200 |  
                    | Split-adjusted Price | 1.40 |  
                
             | 
 |  ACM Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 1/19/2018 | -0.10 / -6.67% | 1.50 | 1.60 | 1.40 | 1.40 | 1.50 | 1.40 | 186,200 |   |  
            | 1/18/2018 | 0.00 / 0.00% | 1.50 | 1.60 | 1.40 | 1.50 | 1.50 | 1.50 | 444,613 |   |  			
            | 1/17/2018 | -0.10 / -6.25% | 1.60 | 1.60 | 1.50 | 1.50 | 1.51 | 1.50 | 231,700 |   |  
            | 1/16/2018 | +0.10 / +6.67% | 1.60 | 1.60 | 1.50 | 1.60 | 1.52 | 1.60 | 376,700 |   |  			
            | 1/15/2018 | -0.10 / -6.25% | 1.60 | 1.60 | 1.50 | 1.50 | 1.53 | 1.50 | 81,908 |   |  
            | 1/12/2018 | 0.00 / 0.00% | 1.60 | 1.60 | 1.50 | 1.60 | 1.59 | 1.60 | 111,240 |   |  			
            | 1/11/2018 | 0.00 / 0.00% | 1.60 | 1.60 | 1.50 | 1.60 | 1.60 | 1.60 | 112,204 |   |  
            | 1/10/2018 | 0.00 / 0.00% | 1.60 | 1.60 | 1.50 | 1.60 | 1.54 | 1.60 | 288,400 |   |  			
            | 1/9/2018 | 0.00 / 0.00% | 1.60 | 1.60 | 1.50 | 1.60 | 1.60 | 1.60 | 168,300 |   |  
            | 1/8/2018 | +0.10 / +6.67% | 1.50 | 1.60 | 1.50 | 1.60 | 1.51 | 1.60 | 261,722 |   |  			
            | 1/5/2018 | -0.10 / -6.25% | 1.60 | 1.60 | 1.50 | 1.50 | 1.52 | 1.50 | 122,100 |   |  
            | 1/4/2018 | 0.00 / 0.00% | 1.50 | 1.60 | 1.50 | 1.60 | 1.58 | 1.60 | 141,001 |   |  			
            | 1/3/2018 | -0.10 / -5.88% | 1.70 | 1.70 | 1.60 | 1.60 | 1.60 | 1.60 | 1,134,833 |   |  
            | 1/2/2018 | 0.00 / 0.00% | 1.70 | 1.70 | 1.60 | 1.70 | 1.67 | 1.70 | 123,300 |   |  			
            | 12/29/2017 | 0.00 / 0.00% | 1.70 | 1.70 | 1.60 | 1.70 | 1.66 | 1.70 | 38,405 |   |  
            | 12/28/2017 | +0.10 / +6.25% | 1.70 | 1.70 | 1.60 | 1.70 | 1.62 | 1.70 | 109,975 |   |  			
            | 12/27/2017 | -0.10 / -5.88% | 1.70 | 1.80 | 1.60 | 1.60 | 1.69 | 1.60 | 397,600 |   |  
            | 12/26/2017 | 0.00 / 0.00% | 1.70 | 1.70 | 1.60 | 1.70 | 1.65 | 1.70 | 84,430 |   |  			
            | 12/25/2017 | 0.00 / 0.00% | 1.70 | 1.80 | 1.60 | 1.70 | 1.70 | 1.70 | 731,550 |   |  
            | 12/22/2017 | +0.10 / +6.25% | 1.70 | 1.70 | 1.60 | 1.70 | 1.69 | 1.70 | 1,411,723 |   |  			
            | 12/21/2017 | 0.00 / 0.00% | 1.60 | 1.70 | 1.50 | 1.60 | 1.60 | 1.60 | 716,620 |   |  
            | 12/20/2017 | 0.00 / 0.00% | 1.60 | 1.70 | 1.50 | 1.60 | 1.61 | 1.60 | 153,420 |   |  			
            | 12/19/2017 | -0.10 / -5.88% | 1.60 | 1.70 | 1.60 | 1.60 | 1.60 | 1.60 | 303,200 |   |  
            | 12/18/2017 | +0.10 / +6.25% | 1.60 | 1.70 | 1.50 | 1.70 | 1.60 | 1.70 | 1,039,170 |   |  			
            | 12/15/2017 | +0.10 / +6.67% | 1.60 | 1.60 | 1.50 | 1.60 | 1.52 | 1.60 | 543,610 |   |  
            | 12/14/2017 | 0.00 / 0.00% | 1.50 | 1.60 | 1.50 | 1.50 | 1.51 | 1.50 | 64,163 |   |  			
            | 12/13/2017 | -0.10 / -6.25% | 1.60 | 1.60 | 1.50 | 1.50 | 1.52 | 1.50 | 238,010 |   |  
            | 12/12/2017 | +0.10 / +6.67% | 1.60 | 1.60 | 1.50 | 1.60 | 1.52 | 1.60 | 296,935 |   |  			
            | 12/11/2017 | 0.00 / 0.00% | 1.60 | 1.60 | 1.50 | 1.50 | 1.52 | 1.50 | 405,200 |   |  
            | 12/8/2017 | -0.10 / -6.25% | 1.60 | 1.70 | 1.50 | 1.50 | 1.60 | 1.50 | 350,150 |   |  |