| 
                
                    
                        | 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 | Oct | 1,029 | 1,320 | 0 | 1,312 |  
                                    |  | 3 | Nov | 1,029 | 1,460 | 0 | 2,500 |  
                                    |  | 3.5 | Oct | 94 | 136 | 0 | 399 |  
                                    |  | 3.5 | Nov | 94 | 136 | 0 | 798 |  
                                    |  |  |  |  |  |  |  |  
                                    | 15 Year | 2 | Nov | 52 | 52 | 0 | 0 |  
                                    |  | 2.5 | Nov | 158 | 332 | 0 | 0 |  
                                    |  |  |  |  |  |  |  |  
                                    | Total |  |  | 2,456 | 3,436 | 0 | 5,009 |  
                                    | *Does not include trades associated with small value exercises. |  |  |