Exhibit 11

Redwood Trust, Inc.
Computation of Per Share Earnings

                         
    Twelve Months     Twelve Months     Twelve Months  
    Ended     Ended     Ended  
    December 31, 2004     December 31, 2003     December 31, 2002  
Basic:
                       
Average common shares outstanding
    21,437,253       17,759,346       15,177,449  
 
                 
Total
    21,437,253       17,759,346       15,177,449  
 
                 
Net Income
  $ 232,634,946     $ 131,698,361     $ 53,441,217  
 
                 
Per Share Amount
  $ 10.85     $ 7.42     $ 3.52  
 
                 
Diluted:
                       
Average common shares outstanding
    21,437,253       17,759,346       15,177,449  
Net effect of dilutive stock options outstanding
during the period — based on the treasury stock method
    791,676       827,303       481,174  
Net effect of preferred stock
          225,517        
 
                 
Total
    22,228,929       18,812,166       15,658,623  
 
                 
Net Income
  $ 232,634,946     $ 131,698,361     $ 53,441,217  
 
                 
Per Share Amount
  $ 10.47     $ 7.04     $ 3.41