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                    Closing price on 12/31/2020
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                    | Open | 6.80 |  
                    | High | 6.80 |  
                    | Low | 6.80 |  
                    | Volume | 0 |  
                    | Split-adjusted Price | 5.05 |  
                
             | 
 |  MDC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 12/31/2020 | 0.00 / 0.00% | 6.80 | 6.80 | 6.80 | 6.80 | 6.80 | 5.05 | 0 |   |  
            | 12/30/2020 | -0.20 / -2.86% | 7.00 | 7.00 | 6.80 | 6.80 | 6.95 | 5.05 | 2,500 |   |  			
            | 12/29/2020 | +0.40 / +6.06% | 7.00 | 7.00 | 7.00 | 7.00 | 7.00 | 5.20 | 1,000 |   |  
            | 12/28/2020 | 0.00 / 0.00% | 6.60 | 6.60 | 6.60 | 6.60 | 6.60 | 4.90 | 0 |   |  			
            | 12/25/2020 | +0.10 / +1.54% | 6.60 | 6.60 | 6.60 | 6.60 | 6.60 | 4.90 | 1,000 |   |  
            | 12/24/2020 | -0.50 / -7.14% | 6.70 | 6.70 | 6.50 | 6.50 | 6.69 | 4.82 | 2,400 |   |  			
            | 12/23/2020 | 0.00 / 0.00% | 7.00 | 7.00 | 7.00 | 7.00 | 7.00 | 5.20 | 0 |   |  
            | 12/22/2020 | 0.00 / 0.00% | 7.00 | 7.00 | 7.00 | 7.00 | 7.00 | 5.20 | 0 |   |  			
            | 12/21/2020 | -0.20 / -2.78% | 7.00 | 7.00 | 7.00 | 7.00 | 7.00 | 5.20 | 1,500 |   |  
            | 12/18/2020 | 0.00 / 0.00% | 7.20 | 7.20 | 7.20 | 7.20 | 7.20 | 5.34 | 0 |   |  			
            | 12/17/2020 | -0.10 / -1.37% | 7.20 | 7.20 | 7.20 | 7.20 | 7.20 | 5.34 | 1,500 |   |  
            | 12/16/2020 | 0.00 / 0.00% | 7.30 | 7.30 | 7.30 | 7.30 | 7.30 | 5.42 | 0 |   |  			
            | 12/15/2020 | +0.30 / +4.29% | 7.00 | 7.30 | 7.00 | 7.30 | 7.10 | 5.42 | 7,300 |   |  
            | 12/14/2020 | -0.60 / -7.89% | 7.00 | 7.00 | 7.00 | 7.00 | 7.00 | 5.20 | 2,200 |   |  			
            | 12/11/2020 | +0.50 / +7.04% | 7.60 | 7.60 | 7.60 | 7.60 | 7.60 | 5.64 | 100 |   |  
            | 12/10/2020 | +0.10 / +1.43% | 6.50 | 7.10 | 6.50 | 7.10 | 6.52 | 5.27 | 3,200 |   |  			
            | 12/9/2020 | -0.50 / -6.67% | 7.00 | 7.00 | 7.00 | 7.00 | 7.00 | 5.20 | 1,000 |   |  
            | 12/8/2020 | +0.50 / +7.14% | 7.50 | 7.50 | 7.50 | 7.50 | 7.50 | 5.57 | 100 |   |  			
            | 12/7/2020 | +0.60 / +9.38% | 7.00 | 7.00 | 7.00 | 7.00 | 7.00 | 5.20 | 100 |   |  
            | 12/4/2020 | 0.00 / 0.00% | 6.40 | 6.40 | 6.40 | 6.40 | 6.40 | 4.75 | 0 |   |  			
            | 12/3/2020 | -0.20 / -3.03% | 6.40 | 6.40 | 6.40 | 6.40 | 6.40 | 4.75 | 100 |   |  
            | 12/2/2020 | 0.00 / 0.00% | 6.60 | 6.60 | 6.60 | 6.60 | 6.60 | 4.90 | 0 |   |  			
            | 12/1/2020 | -0.30 / -4.35% | 6.60 | 6.60 | 6.60 | 6.60 | 6.60 | 4.90 | 100 |   |  
            | 11/30/2020 | 0.00 / 0.00% | 6.90 | 6.90 | 6.90 | 6.90 | 6.90 | 5.12 | 0 |   |  			
            | 11/27/2020 | -0.10 / -1.43% | 6.90 | 6.90 | 6.90 | 6.90 | 6.90 | 5.12 | 500 |   |  
            | 11/26/2020 | -0.60 / -7.89% | 7.00 | 7.00 | 6.90 | 7.00 | 6.98 | 5.20 | 500 |   |  			
            | 11/25/2020 | +0.60 / +8.57% | 7.60 | 7.60 | 7.60 | 7.60 | 7.60 | 5.64 | 100 |   |  
            | 11/24/2020 | +0.20 / +2.94% | 7.00 | 7.00 | 7.00 | 7.00 | 7.00 | 5.20 | 100 |   |  			
            | 11/23/2020 | -0.70 / -9.33% | 6.90 | 6.90 | 6.80 | 6.80 | 6.88 | 5.05 | 400 |   |  
            | 11/20/2020 | +0.50 / +7.14% | 7.60 | 7.60 | 7.50 | 7.50 | 7.51 | 5.57 | 1,200 |   |  |