| 
    
        
            | 
                    Closing price on 11/2/2017
                 |  |  
    
        |           
                
                    | Open | 1.50 |  
                    | High | 1.50 |  
                    | Low | 1.40 |  
                    | Volume | 790,000 |  
                    | Split-adjusted Price | 1.40 |  
                
             | 
 |  ACM Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 11/2/2017 | -0.10 / -6.67% | 1.50 | 1.50 | 1.40 | 1.40 | 1.40 | 1.40 | 790,000 |   |  
            | 11/1/2017 | 0.00 / 0.00% | 1.50 | 1.60 | 1.40 | 1.50 | 1.50 | 1.50 | 595,800 |   |  			
            | 10/31/2017 | -0.10 / -6.25% | 1.60 | 1.60 | 1.50 | 1.50 | 1.57 | 1.50 | 345,300 |   |  
            | 10/30/2017 | 0.00 / 0.00% | 1.60 | 1.70 | 1.60 | 1.60 | 1.60 | 1.60 | 204,410 |   |  			
            | 10/27/2017 | 0.00 / 0.00% | 1.70 | 1.70 | 1.60 | 1.60 | 1.62 | 1.60 | 136,400 |   |  
            | 10/26/2017 | 0.00 / 0.00% | 1.60 | 1.70 | 1.60 | 1.60 | 1.60 | 1.60 | 502,855 |   |  			
            | 10/25/2017 | -0.10 / -5.88% | 1.70 | 1.70 | 1.60 | 1.60 | 1.61 | 1.60 | 670,400 |   |  
            | 10/24/2017 | 0.00 / 0.00% | 1.70 | 1.70 | 1.60 | 1.70 | 1.70 | 1.70 | 111,700 |   |  			
            | 10/23/2017 | 0.00 / 0.00% | 1.70 | 1.80 | 1.60 | 1.70 | 1.70 | 1.70 | 699,900 |   |  
            | 10/20/2017 | 0.00 / 0.00% | 1.70 | 1.80 | 1.70 | 1.70 | 1.73 | 1.70 | 371,500 |   |  			
            | 10/19/2017 | -0.10 / -5.56% | 1.80 | 1.80 | 1.70 | 1.70 | 1.78 | 1.70 | 76,516 |   |  
            | 10/18/2017 | 0.00 / 0.00% | 1.80 | 1.90 | 1.70 | 1.80 | 1.80 | 1.80 | 234,900 |   |  			
            | 10/17/2017 | 0.00 / 0.00% | 1.80 | 1.90 | 1.70 | 1.80 | 1.80 | 1.80 | 192,754 |   |  
            | 10/16/2017 | 0.00 / 0.00% | 1.80 | 1.90 | 1.70 | 1.80 | 1.80 | 1.80 | 377,856 |   |  			
            | 10/13/2017 | 0.00 / 0.00% | 1.80 | 1.90 | 1.70 | 1.80 | 1.81 | 1.80 | 535,700 |   |  
            | 10/12/2017 | 0.00 / 0.00% | 1.80 | 1.90 | 1.80 | 1.80 | 1.80 | 1.80 | 65,200 |   |  			
            | 10/11/2017 | 0.00 / 0.00% | 1.80 | 1.90 | 1.70 | 1.80 | 1.79 | 1.80 | 367,633 |   |  
            | 10/10/2017 | 0.00 / 0.00% | 1.80 | 1.90 | 1.70 | 1.80 | 1.76 | 1.80 | 586,950 |   |  			
            | 10/9/2017 | 0.00 / 0.00% | 1.90 | 1.90 | 1.80 | 1.80 | 1.80 | 1.80 | 261,238 |   |  
            | 10/6/2017 | 0.00 / 0.00% | 1.90 | 1.90 | 1.70 | 1.80 | 1.80 | 1.80 | 874,900 |   |  			
            | 10/5/2017 | -0.10 / -5.26% | 1.90 | 1.90 | 1.80 | 1.80 | 1.81 | 1.80 | 578,546 |   |  
            | 10/4/2017 | +0.10 / +5.56% | 1.80 | 1.90 | 1.80 | 1.90 | 1.85 | 1.90 | 305,400 |   |  			
            | 10/3/2017 | -0.10 / -5.26% | 1.90 | 1.90 | 1.80 | 1.80 | 1.87 | 1.80 | 177,700 |   |  
            | 10/2/2017 | 0.00 / 0.00% | 2.00 | 2.00 | 1.80 | 1.90 | 1.90 | 1.90 | 1,184,236 |   |  			
            | 9/29/2017 | -0.10 / -5.00% | 2.00 | 2.00 | 1.90 | 1.90 | 1.91 | 1.90 | 463,038 |   |  
            | 9/28/2017 | 0.00 / 0.00% | 2.00 | 2.00 | 1.90 | 2.00 | 1.93 | 2.00 | 1,101,650 |   |  			
            | 9/27/2017 | -0.10 / -4.76% | 2.00 | 2.10 | 1.90 | 2.00 | 1.98 | 2.00 | 1,566,340 |   |  
            | 9/26/2017 | -0.20 / -8.70% | 2.20 | 2.20 | 2.10 | 2.10 | 2.10 | 2.10 | 289,252 |   |  			
            | 9/25/2017 | +0.20 / +9.52% | 2.20 | 2.30 | 2.10 | 2.30 | 2.27 | 2.30 | 3,442,310 |   |  
            | 9/22/2017 | -0.10 / -4.55% | 2.20 | 2.20 | 2.10 | 2.10 | 2.11 | 2.10 | 686,200 |   |  |