| 
    
        
            | 
                    Closing price on 2/19/2019
                 |  |  
    
        |           
                
                    | Open | 0.60 |  
                    | High | 0.70 |  
                    | Low | 0.50 |  
                    | Volume | 232,600 |  
                    | Split-adjusted Price | 0.60 |  
                
             | 
 |  ACM Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 2/19/2019 | 0.00 / 0.00% | 0.60 | 0.70 | 0.50 | 0.60 | 0.60 | 0.60 | 232,600 |   |  
            | 2/18/2019 | 0.00 / 0.00% | 0.70 | 0.70 | 0.60 | 0.60 | 0.60 | 0.60 | 325,200 |   |  			
            | 2/15/2019 | -0.10 / -14.29% | 0.70 | 0.70 | 0.60 | 0.60 | 0.63 | 0.60 | 104,100 |   |  
            | 2/14/2019 | +0.10 / +16.67% | 0.70 | 0.70 | 0.60 | 0.70 | 0.65 | 0.70 | 204,300 |   |  			
            | 2/13/2019 | 0.00 / 0.00% | 0.60 | 0.70 | 0.60 | 0.60 | 0.64 | 0.60 | 212,400 |   |  
            | 2/12/2019 | +0.10 / +20.00% | 0.60 | 0.60 | 0.50 | 0.60 | 0.59 | 0.60 | 597,300 |   |  			
            | 2/11/2019 | -0.10 / -16.67% | 0.60 | 0.60 | 0.50 | 0.50 | 0.54 | 0.50 | 97,600 |   |  
            | 2/1/2019 | +0.10 / +20.00% | 0.60 | 0.60 | 0.50 | 0.60 | 0.54 | 0.60 | 57,500 |   |  			
            | 1/31/2019 | 0.00 / 0.00% | 0.50 | 0.60 | 0.50 | 0.50 | 0.52 | 0.50 | 223,400 |   |  
            | 1/30/2019 | 0.00 / 0.00% | 0.50 | 0.60 | 0.50 | 0.50 | 0.51 | 0.50 | 69,300 |   |  			
            | 1/29/2019 | 0.00 / 0.00% | 0.60 | 0.60 | 0.50 | 0.50 | 0.55 | 0.50 | 105,600 |   |  
            | 1/28/2019 | 0.00 / 0.00% | 0.60 | 0.60 | 0.50 | 0.50 | 0.52 | 0.50 | 65,300 |   |  			
            | 1/25/2019 | 0.00 / 0.00% | 0.60 | 0.60 | 0.50 | 0.50 | 0.51 | 0.50 | 389,900 |   |  
            | 1/24/2019 | -0.10 / -16.67% | 0.60 | 0.60 | 0.50 | 0.50 | 0.53 | 0.50 | 106,100 |   |  			
            | 1/23/2019 | 0.00 / 0.00% | 0.60 | 0.60 | 0.50 | 0.60 | 0.56 | 0.60 | 98,300 |   |  
            | 1/22/2019 | 0.00 / 0.00% | 0.60 | 0.70 | 0.50 | 0.60 | 0.60 | 0.60 | 312,601 |   |  			
            | 1/21/2019 | 0.00 / 0.00% | 0.70 | 0.70 | 0.60 | 0.60 | 0.61 | 0.60 | 152,100 |   |  
            | 1/18/2019 | -0.10 / -14.29% | 0.70 | 0.70 | 0.60 | 0.60 | 0.69 | 0.60 | 58,300 |   |  			
            | 1/17/2019 | 0.00 / 0.00% | 0.70 | 0.70 | 0.60 | 0.70 | 0.66 | 0.70 | 143,400 |   |  
            | 1/16/2019 | +0.10 / +16.67% | 0.70 | 0.70 | 0.70 | 0.70 | 0.70 | 0.70 | 78,500 |   |  			
            | 1/15/2019 | -0.10 / -14.29% | 0.60 | 0.70 | 0.60 | 0.60 | 0.61 | 0.60 | 71,100 |   |  
            | 1/14/2019 | 0.00 / 0.00% | 0.70 | 0.70 | 0.60 | 0.70 | 0.68 | 0.70 | 57,600 |   |  			
            | 1/11/2019 | +0.10 / +16.67% | 0.70 | 0.70 | 0.60 | 0.70 | 0.62 | 0.70 | 684,800 |   |  
            | 1/10/2019 | -0.10 / -14.29% | 0.70 | 0.70 | 0.60 | 0.60 | 0.67 | 0.60 | 85,500 |   |  			
            | 1/9/2019 | 0.00 / 0.00% | 0.70 | 0.80 | 0.70 | 0.70 | 0.70 | 0.70 | 171,000 |   |  
            | 1/8/2019 | 0.00 / 0.00% | 0.60 | 0.80 | 0.60 | 0.70 | 0.75 | 0.70 | 132,400 |   |  			
            | 1/7/2019 | 0.00 / 0.00% | 0.60 | 0.80 | 0.60 | 0.70 | 0.70 | 0.70 | 108,200 |   |  
            | 1/4/2019 | 0.00 / 0.00% | 0.60 | 0.80 | 0.60 | 0.70 | 0.70 | 0.70 | 161,800 |   |  			
            | 1/3/2019 | -0.10 / -12.50% | 0.70 | 0.80 | 0.70 | 0.70 | 0.70 | 0.70 | 220,700 |   |  
            | 1/2/2019 | +0.10 / +14.29% | 0.80 | 0.80 | 0.80 | 0.80 | 0.80 | 0.80 | 48,000 |   |  |