| 
    
        
            | 
                    Closing price on 8/10/2012
                 |  |  
    
        |           
                
                    | Open | 6.10 |  
                    | High | 6.10 |  
                    | Low | 5.90 |  
                    | Volume | 93,200 |  
                    | Split-adjusted Price | 6.00 |  
                
             | 
 |  PV2 Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 8/10/2012 | -0.10 / -1.64% | 6.10 | 6.10 | 5.90 | 6.00 | 6.00 | 6.00 | 93,200 |   |  
            | 8/9/2012 | 0.00 / 0.00% | 6.10 | 6.20 | 6.10 | 6.10 | 6.15 | 6.10 | 536,900 |   |  			
            | 8/8/2012 | +0.10 / +1.67% | 6.00 | 6.10 | 5.90 | 6.10 | 6.04 | 6.10 | 289,500 |   |  
            | 8/7/2012 | 0.00 / 0.00% | 6.00 | 6.10 | 5.90 | 6.00 | 6.02 | 6.00 | 396,700 |   |  			
            | 8/6/2012 | +0.20 / +3.45% | 5.80 | 6.00 | 5.80 | 6.00 | 5.97 | 6.00 | 425,700 |   |  
            | 8/3/2012 | 0.00 / 0.00% | 5.70 | 5.90 | 5.70 | 5.80 | 5.74 | 5.80 | 329,800 |   |  			
            | 8/2/2012 | +0.10 / +1.75% | 5.80 | 5.90 | 5.70 | 5.80 | 5.74 | 5.80 | 141,800 |   |  
            | 8/1/2012 | -0.10 / -1.72% | 5.70 | 5.80 | 5.60 | 5.70 | 5.67 | 5.70 | 176,700 |   |  			
            | 7/31/2012 | -0.10 / -1.69% | 6.00 | 6.00 | 5.80 | 5.80 | 5.84 | 5.80 | 190,100 |   |  
            | 7/30/2012 | 0.00 / 0.00% | 5.90 | 6.00 | 5.80 | 5.90 | 5.85 | 5.90 | 543,400 |   |  			
            | 7/27/2012 | -0.30 / -4.84% | 6.30 | 6.30 | 5.90 | 5.90 | 6.06 | 5.90 | 509,300 |   |  
            | 7/26/2012 | 0.00 / 0.00% | 6.10 | 6.40 | 6.10 | 6.20 | 6.22 | 6.20 | 317,100 |   |  			
            | 7/25/2012 | +0.10 / +1.64% | 6.10 | 6.30 | 6.10 | 6.20 | 6.17 | 6.20 | 339,600 |   |  
            | 7/24/2012 | -0.40 / -6.15% | 6.40 | 6.40 | 6.10 | 6.10 | 6.25 | 6.10 | 685,800 |   |  			
            | 7/23/2012 | -0.20 / -2.99% | 6.60 | 6.80 | 6.50 | 6.50 | 6.60 | 6.50 | 480,400 |   |  
            | 7/20/2012 | -0.10 / -1.47% | 6.80 | 7.10 | 6.60 | 6.70 | 6.86 | 6.70 | 794,700 |   |  			
            | 7/19/2012 | +0.40 / +6.25% | 6.60 | 6.80 | 6.40 | 6.80 | 6.67 | 6.80 | 844,400 |   |  
            | 7/18/2012 | -0.20 / -3.03% | 6.60 | 6.60 | 6.30 | 6.40 | 6.48 | 6.40 | 397,600 |   |  			
            | 7/17/2012 | +0.30 / +4.76% | 6.30 | 6.60 | 6.30 | 6.60 | 6.51 | 6.60 | 364,300 |   |  
            | 7/16/2012 | -0.30 / -4.55% | 6.60 | 6.60 | 6.20 | 6.30 | 6.42 | 6.30 | 504,100 |   |  			
            | 7/13/2012 | +0.20 / +3.13% | 6.40 | 6.80 | 6.30 | 6.60 | 6.59 | 6.60 | 611,700 |   |  
            | 7/12/2012 | +0.20 / +3.23% | 6.20 | 6.50 | 6.20 | 6.40 | 6.30 | 6.40 | 390,500 |   |  			
            | 7/11/2012 | +0.30 / +5.08% | 6.00 | 6.20 | 6.00 | 6.20 | 6.12 | 6.20 | 138,800 |   |  
            | 7/10/2012 | -0.10 / -1.67% | 6.00 | 6.10 | 5.90 | 5.90 | 6.02 | 5.90 | 209,900 |   |  			
            | 7/9/2012 | -0.30 / -4.76% | 6.30 | 6.30 | 6.00 | 6.00 | 6.06 | 6.00 | 428,100 |   |  
            | 7/6/2012 | -0.10 / -1.56% | 6.50 | 6.60 | 6.30 | 6.30 | 6.40 | 6.30 | 534,600 |   |  			
            | 7/5/2012 | +0.40 / +6.67% | 6.00 | 6.40 | 5.90 | 6.40 | 6.25 | 6.40 | 420,500 |   |  
            | 7/4/2012 | -0.20 / -3.23% | 6.20 | 6.30 | 5.90 | 6.00 | 6.11 | 6.00 | 265,300 |   |  			
            | 7/3/2012 | 0.00 / 0.00% | 6.30 | 6.30 | 5.90 | 6.20 | 6.08 | 6.20 | 504,900 |   |  
            | 7/2/2012 | -0.30 / -4.62% | 6.60 | 6.60 | 6.20 | 6.20 | 6.25 | 6.20 | 485,800 |   |  |