| 
                
            
            	| 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 | 3.5 | May | 1,250 | 1,550 | 0 | 700 |  
                            |  | 4 | May | 2,000 | 4,762 | 0 | 1,050 |  
                            |  |  |  |  |  |  |  |  
                            | 15 Year | 2.5 | May | 0 | 200 | 0 | 0 |  
                            |  | 3 | June | 200 | 250 | 0 | 0 |  
                            |  | 3.5 | May | 50 | 150 | 0 | 0 |  
                            |  | 3.5 | June | 50 | 50 | 0 | 0 |  
                            |  |  |  |  |  |  |  |   
                            | Total |  |  | 3,550 | 6,962 | 0 | 1,750 |  
                          	| *Does not include trades associated with small value exercises. |  |  |