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                    Closing price on 3/16/2011
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                    | Open | 24.40 |  
                    | High | 24.40 |  
                    | Low | 23.70 |  
                    | Volume | 113,800 |  
                    | Split-adjusted Price | 3.02 |  
                
             | 
 |  VHC Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 3/16/2011 | +0.20 / +0.85% | 24.40 | 24.40 | 23.70 | 23.70 | 23.70 | 3.02 | 113,800 |   |  
            | 3/15/2011 | -0.90 / -3.69% | 23.50 | 23.50 | 23.50 | 23.50 | 23.50 | 3.00 | 300 |   |  			
            | 3/14/2011 | +0.80 / +3.39% | 23.10 | 24.40 | 23.10 | 24.40 | 24.40 | 3.11 | 1,910 |   |  
            | 3/11/2011 | -0.80 / -3.28% | 24.40 | 24.40 | 23.60 | 23.60 | 23.60 | 3.01 | 15,230 |   |  			
            | 3/10/2011 | +1.10 / +4.72% | 23.30 | 24.40 | 23.30 | 24.40 | 24.40 | 3.11 | 3,560 |   |  
            | 3/9/2011 | +0.80 / +3.56% | 23.30 | 23.30 | 23.30 | 23.30 | 23.30 | 2.97 | 1,000 |   |  			
            | 3/8/2011 | -0.50 / -2.17% | 23.00 | 23.10 | 22.50 | 22.50 | 22.50 | 2.87 | 46,520 |   |  
            | 3/7/2011 | -0.50 / -2.13% | 24.40 | 24.40 | 23.00 | 23.00 | 23.00 | 2.94 | 2,010 |   |  			
            | 3/4/2011 | -0.60 / -2.49% | 24.10 | 24.10 | 23.50 | 23.50 | 23.50 | 3.00 | 8,730 |   |  
            | 3/3/2011 | +1.10 / +4.78% | 22.50 | 24.10 | 22.50 | 24.10 | 24.10 | 3.08 | 4,590 |   |  			
            | 3/2/2011 | -0.80 / -3.36% | 23.00 | 24.40 | 23.00 | 23.00 | 23.00 | 2.94 | 10,290 |   |  
            | 3/1/2011 | -0.60 / -2.46% | 24.50 | 24.50 | 23.80 | 23.80 | 23.80 | 3.04 | 36,230 |   |  			
            | 2/28/2011 | -0.30 / -1.21% | 24.70 | 25.00 | 24.40 | 24.40 | 24.40 | 3.11 | 99,320 |   |  
            | 2/25/2011 | -1.00 / -3.89% | 26.10 | 26.10 | 24.70 | 24.70 | 24.70 | 3.15 | 4,070 |   |  			
            | 2/24/2011 | +1.20 / +4.90% | 24.50 | 25.70 | 23.30 | 25.70 | 25.70 | 3.28 | 12,460 |   |  
            | 2/23/2011 | +1.00 / +4.26% | 23.50 | 24.50 | 23.00 | 24.50 | 24.50 | 3.13 | 12,810 |   |  			
            | 2/22/2011 | -0.90 / -3.69% | 23.20 | 23.50 | 23.20 | 23.50 | 23.50 | 3.00 | 8,780 |   |  
            | 2/21/2011 | -1.20 / -4.69% | 25.60 | 25.60 | 24.40 | 24.40 | 24.40 | 3.11 | 28,630 |   |  			
            | 2/18/2011 | -0.10 / -0.39% | 25.70 | 25.70 | 25.60 | 25.60 | 25.60 | 3.27 | 37,900 |   |  
            | 2/17/2011 | 0.00 / 0.00% | 25.60 | 25.70 | 25.60 | 25.70 | 25.70 | 3.28 | 31,870 |   |  			
            | 2/16/2011 | 0.00 / 0.00% | 26.20 | 26.20 | 25.60 | 25.70 | 25.70 | 3.28 | 138,250 |   |  
            | 2/15/2011 | 0.00 / 0.00% | 25.60 | 26.50 | 25.60 | 25.70 | 25.70 | 3.28 | 61,350 |   |  			
            | 2/14/2011 | -0.50 / -1.91% | 25.60 | 26.50 | 25.30 | 25.70 | 25.70 | 3.28 | 12,850 |   |  
            | 2/11/2011 | +0.40 / +1.55% | 25.50 | 26.20 | 25.20 | 26.20 | 26.20 | 3.34 | 9,190 |   |  			
            | 2/10/2011 | +0.40 / +1.57% | 26.40 | 26.50 | 25.80 | 25.80 | 25.80 | 3.29 | 2,880 |   |  
            | 2/9/2011 | -0.60 / -2.31% | 26.40 | 26.40 | 25.40 | 25.40 | 25.40 | 3.24 | 2,320 |   |  			
            | 2/8/2011 | 0.00 / 0.00% | 26.90 | 26.90 | 26.00 | 26.00 | 26.00 | 3.32 | 20 |   |  
            | 1/28/2011 | 0.00 / 0.00% | 26.10 | 26.10 | 26.00 | 26.00 | 26.00 | 3.32 | 3,280 |   |  			
            | 1/27/2011 | 0.00 / 0.00% | 26.00 | 26.00 | 26.00 | 26.00 | 26.00 | 3.32 | 200 |   |  
            | 1/26/2011 | +0.40 / +1.56% | 25.50 | 26.00 | 25.50 | 26.00 | 26.00 | 3.32 | 2,510 |   |  |