Negative duration
A situation in which the price of the MBS moves in the same direction as interest rates. |
Similar financial terms
Negative pledge clauseA bond covenant that requires the borrower to grant lenders a lien equivalent to any liens that may be granted in the future to any other currently unsecured lenders.
Negative covenant
A bond covenant that limits or prohibits altogether certain actions unless the bondholders agree.
Negative convexity
A bond characteristic such that the price appreciation will be less than the price depreciation for a large change in yield of a given number of basis points.
Negative amortization
A loan repayment schedule in which the outstanding principal balance of the loan increases, rather than amortizing, because the scheduled monthly payments do not cover the full amount required to amortize the loan. The unpaid interest is added to the outstanding principal, to be repaid later.
Negative amortization
A gradual increase in mortgage debt that occurs when the monthly payment is not large enough to cover the entire principal and interest due. The amount of the shortfall is added to the remaining balance to create "negative" amortization.
Mortgage duration
A modification of standard duration to account for the impact on duration of MBSs of changes in prepayment speed resulting from changes in interest rates. Two factors are employed: one that reflects the impact of changes in prepayment speed or price.
Modified duration
The ratio of Macaulay duration to (1 + y), where y = the bond yield. Modified duration is inversely related to the approximate percentage change in price for a given change in yield.
Macaulay duration
The weighted-average term to maturity of the cash flows from the bond, where the weights are the present value of the cash flow divided by the price of the bond.
D = [(1 x (C/1+y)) + (2 x (C/1+y^2)) + (3 x ((C + FV)/1+y^3))] / [(C/1+y) + (C/1+y^2) + (C + FV/1+y^3)]
Duration
A measure of a bond's price sensitivity to changes in interest rates.
