| 
                
                    
                        | 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 | 210 | 236 | 0 | 336 |  
                                    |  | 3.5 | Oct | 866 | 1,182 | 0 | 1,187 |  
                                    |  | 4 | Oct | 236 | 420 | 0 | 1,139 |  
                                    |  |  |  |  |  |  |  |  
                                    | 15 Year | 2.5 | Oct | 184 | 193 | 0 | 0 |  
                                    |  | 3 | Oct | 251 | 351 | 0 | 0 |  
                                    |  |  |  |  |  |  |  |  
                                    | Total |  |  | 1,747 | 2,382 | 0 | 2,662 |  
                                    | *Does not include trades associated with small value exercises. |  |  |