GLOSSARY
General
Information Changes.Amounts and rates for 2006 reflect data reclassifications, definitional changes and corrections as well as revisions to this presentation. As a result, these amounts and rates may differ from and may not be shown on a comparable basis to those previously reported in Fannie Mae’s Monthly Summary reports.
Compounded Growth Rate.Monthly growth rates are compounded to provide an annualized rate of growth.
Table 1
Total Book of Business.Sum of the Gross Mortgage Portfolio balance and Total Fannie Mae MBS and Other Guarantees balance, less Fannie Mae MBS held in the mortgage portfolio.
New Business Acquisitions.Sum of MBS issuances and Mortgage Portfolio purchases less Fannie Mae MBS purchases and securitizations of mortgage loans previously held in portfolio.
Table 2
Portfolio Commitments.Represents mandatory commitments entered into during the month. Fannie Mae enters into forward commitments to purchase mortgage securities and mortgage loans, or to sell mortgage securities, for the mortgage portfolio.
Purchase commitments typically require mandatory delivery and are subject to the payment of pair-off fees for non-delivery.
Commitments to Purchase, Net.Represents mandatory commitments to purchase mortgage loans and mortgage securities, net of mortgage loans for which a cash pair-off has been paid. Pair-offs occur when loans are not delivered against mandatory commitments.
Commitments to Sell.Represents mandatory commitments to sell mortgage securities.
Net Retained Commitments.Represents mandatory commitments to purchase, less commitments to sell, net of mortgage loans for which a cash pair-off has been paid.
Table 3
Gross Mortgage Portfolio.End balance represents the unpaid principal balance (“UPB”) of the mortgage portfolio that Fannie Mae holds for investment and liquidity purposes.
Purchases.Acquisition of mortgage loans and mortgage securities for the mortgage portfolio.
Sales.Sales of mortgage securities from the mortgage portfolio.
Liquidations.Represents the total amount of repayments, curtailments, payoffs, and foreclosures on mortgage loans and mortgages underlying securities held in the mortgage portfolio.
Annualized Liquidation Rate.The liquidation rate is calculated as liquidations divided by the prior period ending balance of the mortgage portfolio, annualized.
Table 4
Fannie Mae Guaranteed Securities and Mortgage Loans.Consists of securities and mortgage loans for which Fannie Mae manages credit risk. This table excludes non-Fannie Mae securities held in the mortgage portfolio, which are shown in Table 5.
Total Fannie Mae MBS.Includes Fannie Mae MBS, private label wraps, whole loan REMICs, and Multifamily discount MBS (DMBS) that Fannie Mae guarantees, regardless of whether those MBS are held in the mortgage portfolio or held by investors other than Fannie Mae. If an MBS has been resecuritized into another MBS, the principal amount is only included once in this total.
Issuances.Represents the total amount of Fannie Mae MBS created during the month, including lender-originated issues and Fannie Mae MBS created from mortgage loans previously held in Fannie Mae’s portfolio. Fannie Mae MBS may be held in portfolio after their creation.
Liquidations.Represents the total amount of repayments, curtailments, payoffs, and foreclosures on mortgages underlying Fannie Mae MBS, including Fannie Mae MBS held in the mortgage portfolio.
Other Fannie Mae Guarantees.Outstanding balance of Fannie Mae guarantees, other than Fannie Mae MBS. This primarily includes credit enhancements we provide on multifamily mortgage assets and Ginnie Mae securities.
Annualized Liquidation Rate.The liquidation rate is calculated as liquidations divided by the prior period ending balance of total Fannie Mae MBS, annualized.
Table 5
Mortgage Portfolio Composition.Shows the primary components of Fannie Mae’s mortgage portfolio and activity relating to Fannie Mae MBS held in the mortgage portfolio.
Non-Fannie Mae Agency Securities.Represents mortgage-related securities issued by Freddie Mac and Ginnie Mae.
Non-Fannie Mae Non-Agency Securities.These are commonly referred to as “private-label securities.”
Table 6
Liquid Investments.Liquid investments serve as Fannie Mae’s primary source of liquidity and an investment vehicle for surplus capital. This balance includes high-quality securities that are short-term or readily marketable, such as commercial paper, asset-backed securities and corporate floating-rate notes. The balance shown does not include cash and cash-equivalents, which are also used for liquidity purposes.
Table 7
Debt Activity.For more information about Fannie Mae’s debt activity, please visitwww.fanniemae.com/markets/debt/debt_activity.
Table 8
Effective Duration Gap.The effective duration gap is the daily average of the difference between the duration of Fannie Mae’s assets and liabilities for the reported month. The calculation excludes any interest rate sensitivity of the guarantee business.
The duration gap calculation includes non-mortgage assets and liabilities.
Table 9
Serious Delinquency Rates.A measure of credit performance and indicator of future defaults for the single-family and multifamily mortgage credit books. We classify single-family loans as seriously delinquent when a borrower has missed three or more consecutive monthly payments, and the loan has not been brought current or extinguished through foreclosure, payoff, or other resolution. A loan referred to foreclosure but not yet foreclosed is also considered seriously delinquent. We include all of the conventional single-family loans that we own or that back Fannie Mae MBS in our single-family delinquency rate, including those with substantial credit enhancement. We classify multifamily loans as seriously delinquent when payment is 60 days or more past due.