| 
                
            
            	| 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 | May | 1,492 | 2,432 | 0 | 1,497 |  
                            |  | 3.5 | May | 1,286 | 1,860 | 0 | 2,206 |  
                            |  |  |  |  |  |  |  |  
                            | 15 Year | 2.5 | May | 158 | 280 | 0 | 0 |  
                            |  | 3 | May | 88 | 123 | 0 | 0 |  
                            |  |  |  |  |  |  |  |   
                            | Total |  |  | 3,024 | 4,695 | 0 | 3,703 |  
                          	| *Does not include trades associated with small value exercises. |  |  |