Modified Duration
Definition of 'Modified Duration'A formula that expresses the measurable change in the value of a security in response to a change in interest rates. Calculated as:![]() Where: n = number of coupon periods per year YTM = the bond's yield to maturity |
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Investopedia explains 'Modified Duration'Modified duration follows the concept that interest rates and bond prices move in opposite directions. This formula is used to determine the effect that a 100-basis-point (1%) change in interest rates will have on the price of a bond. |
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