| 
                
            
            	| Purchases summarize all trades executed during the indicated period including purchases associated with dollar rolls.* |  
                     
                      | Transactions 
                        ($ million) |   
                      | 
                           
                            | Maturity | Coupon | Settlement 
                                Month | FHLMC | FNMA | GNMA | GNMA2 |  
                            | 30 Year | 3 | Apr | 0 | 0 | 0 | 924 |  
                            |  | 3 | May | 1,348 | 1,678 | 0 | 0 |  
                            |  | 3.5 | Apr | 0 | 0 | 0 | 1,196 |  
                            |  | 3.5 | May | 1,233 | 1,524 | 0 | 0 |  
                            |  |  |  |  |  |  |  |  
                            | 15 Year | 2.5 | Apr | 127 | 245 | 0 | 0 |  
                            |  | 2.5 | May | 140 | 262 | 0 | 0 |  
                            |  | 3 | Apr | 88 | 111 | 0 | 0 |  
                            |  | 3 | May | 88 | 123 | 0 | 0 |  
                            |  |  |  |  |  |  |  |   
                            | Total |  |  | 3,024 | 3,943 | 0 | 2,120 |  
                          	| *Does not include trades associated with small value exercises. |  |  |