​Beginning January 2013, a file containing Prospective Multiple Issuer Pools with 4 months of information (twelve sections - 4 months for each of the three classes) will be available. It will be available on the 3rd Business Day before the end of the month at 1:30 am. If additional shelves are added to any of the classes (15 year, 30/40 year and Adjustable Rate Mortgages), the file will be replaced at 1:30 in the morning. Prior to January 2013, the information can be found on Ginnie Mae's website under the Multiple Issuer Pool Numbers section in a PDF format.